1625-0094 Stat/Authority

Coast Guard, DOT

Pt. 153

(c) Zinc, galvanized steel, or alloys
having more than 10 percent zinc by
weight.
(d) Magnesium.
(e) Lead.
(f) Silver or silver alloys.
(g) Mercury.
[CGD 88–100, 54 FR 40041, Sept. 29, 1989]

Subpart 151.58—Required
Materials of Construction
§ 151.58–1

Required materials.

When one of the following paragraphs
of this section is referenced in table
151.05, only those materials listed in
that paragraph may be used in components that contact the cargo or its
vapor:
(a) Aluminum, stainless steel, or
steel covered with a protective lining
or coating. (See § 151.15–3(f)(2).)
(b)–(c) [Reserved]
(d) Solid austenitic stainless steel.
(e) Stainless steel or steel covered
with a suitable protective lining or
coating. (See § 151.15–3(f)(2).)
[CGD 88–100, 54 FR 40041, Sept. 29, 1989]

PART 152 [RESERVED]
PART 153—SHIPS CARRYING BULK
LIQUID, LIQUEFIED GAS, OR
COMPRESSED GAS HAZARDOUS
MATERIALS
Subpart A—General
Sec.
153.0 Availability of materials.
153.1 Applicability.
153.2 Definitions and acronyms.
153.3 Right of appeal.
153.4 Incorporation by reference.
153.7 Ships built before December 27, 1977
and non-self-propelled ships built before
July 1, 1983: Application.
153.8 Procedures for requesting an endorsed
Certificate of Inspection.
153.9 Foreign flag vessel endorsement application.
153.10 Procedures for requesting alternatives and waivers; termination of
waivers.
153.12 IMO Certificates for United States
Ships.
153.15 Conditions under which the Coast
Guard issues a Certificate of Inspection
or Certificate of Compliance.

153.16 Requirements for foreign flag vessel
permits.
153.30 Special area endorsement.
153.40 Determination of materials that are
hazardous.

Subpart B—Design and Equipment
GENERAL VESSEL REQUIREMENTS
153.190 Stability requirements.
153.201 Openings to accommodation, service
or control spaces.
153.208 Ballast equipment.
153.209 Bilge pumping systems.
153.214 Personnel emergency and safety
equipment.
153.215 Safety equipment lockers.
153.216 Shower and eyewash fountains.
153.217 Access to enclosed spaces and dedicated ballast tanks.
153.219 Access to double bottom tanks serving as dedicated ballast tanks.
CARGO CONTAINMENT SYSTEMS
153.230 Type I system.
153.231 Type II system.
153.232 Type III system.
153.233 Separation of tanks from machinery,
service and other spaces.
153.234 Fore and aft location.
153.235 Exceptions to cargo piping location
restrictions.
153.236 Prohibited materials.
153.238 Required materials.
153.239 Use of cast iron.
153.240 Insulation.
CARGO TANKS
153.250 Double-bottom and deep tanks as
cargo tanks.
153.251 Independent cargo tanks.
153.252 Special requirement for an independent cargo tank.
153.254 Cargo tank access.
153.256 Trunks, domes, and openings of
cargo tanks.
153.266 Tank linings.
PIPING SYSTEMS AND CARGO HANDLING
EQUIPMENT
153.280 Piping system design.
153.281 Piping to independent tanks.
153.282 Cargo filling lines.
153.283 Valving for cargo piping.
153.284 Characteristics of required quick
closing valves.
153.285 Valving for cargo pump manifolds.
153.292 Separation of piping systems.
153.294 Marking of piping systems.
153.296 Emergency shutdown stations.
153.297 Emergency actuators at the point of
cargo control.
CARGO HANDLING SPACE VENTILATION
153.310
153.312

Ventilation system type.
Ventilation system standards.

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46 CFR Ch. I (10–1–00 Edition)

153.314 Ventilation of spaces not usually occupied.
153.316 Special cargo pumproom ventilation
rate.

153.462 Static discharges from inert gas systems.
153.463 Vent system discharges.
153.465 Flammable vapor detector.
153.466 Electrical equipment.

CARGO PUMPROOMS
153.330 Access.
153.332 Hoisting arrangement.
153.333 Cargo pump discharge pressure
gauge.
153.334 Bilge pumping systems.
153.336 Special cargo pump or pumproom requirements.
CARGO VENTING SYSTEMS
153.350 Location of B/3 vent discharges.
153.351 Location of 4 m vent discharges.
153.352 B/3 and 4 m venting system outlets.
153.353 High velocity vents.
153.354 Venting system inlet.
153.355 PV venting systems.
153.358 Venting system flow capacity.
153.360 Venting system restriction.
153.361 Arrangements for removal of valves
from venting systems having multiple relief valves.
153.362 Venting system drain.
153.364 Venting system supports.
153.365 Liquid overpressurization protection.
153.368 Pressure–vacuum valves.
153.370 Minimum relief valve setting for
ambient temperature cargo tanks.
153.371 Minimum relief valve setting for refrigerated cargo tanks.
153.372 Gauges and vapor return for cargo
vapor pressures exceeding 100 kPa
(approx. 14.7 psia).
CARGO GAUGING SYSTEMS
153.400 General requirements for gauges.
153.404 Standards for containment systems
having required closed gauges.
153.406 Standards for containment systems
having required restricted gauges.
153.407 Special requirements for sounding
tube gauges.
153.408 Tank overflow control.
153.409 High level alarms.
CARGO TEMPERATURE CONTROL SYSTEMS
153.430 Heat transfer systems; general.
153.432 Cooling systems.
153.434 Heat transfer coils within a tank.
153.436 Heat transfer fluids: compatibility
with cargo.
153.438 Cargo pressure or temperature
alarms required.
153.440 Cargo temperature sensors.
SPECIAL REQUIREMENTS FOR FLAMMABLE OR
COMBUSTIBLE CARGOES
153.460 Fire protection systems.
153.461 Electrical bonding of independent
tanks.

DESIGN AND EQUIPMENT FOR POLLUTION
CONTROL
153.470 System for discharge of NLS residue
to the sea: Categories A, B, C, and D.
153.480 Stripping quantity for Category B
and C NLS tanks on ships built after
June 30, 1986: Categories B and C.
153.481 Stripping quantities and interim
standards for Category B NLS tanks on
ships built before July 1, 1986: Category
B.
153.482 Stripping quantities and interim
standards for Category C NLS tanks on
ships built before July 1, 1986: Category
C.
153.483 Restricted voyage waiver for Category B and C NLS tanks on ships built
before July 1, 1986: Category B and C.
153.484 Prewash equipment.
153.486 Design and equipment for removing
NLS residue by ventilation: Categories
A, B, C, and D.
153.488 Design and equipment for tanks carrying high melting point NLSs: Category
B.
153.490 Cargo Record Book and Approved
Procedures and Arrangements Manual:
Categories A, B, C, and D.
153.491 Waiver of certain equipment for
dedicated cargo tanks.
SPECIAL REQUIREMENTS
153.500 Inert gas systems.
153.501 Requirement for dry inert gas.
153.515 Special requirements for extremely
flammable cargoes.
153.520 Special requirements for carbon disulfide.
153.525 Special requirements for unusually
toxic cargoes.
153.526 Toxic vapor detectors.
153.527 Toxic vapor protection.
153.530 Special requirements for alkylene
oxides.
153.545 Special requirements for liquid sulfur.
153.554 Special requirements for acids.
153.555 Special requirements for inorganic
acids.
153.556 Special requirements for sulfuric
acid and oleum.
153.557 Special requirements for hydrochloric acid.
153.558 Special requirements for phosphoric
acid.
153.559 Special requirements for nitric acid
(less than 70 percent).
153.560 Special requirements for Alkyl (C7–
C9) nitrates.
153.565 Special requirements for temperature sensors.

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Pt. 153

153.602 Special requirements for cargoes reactive with water.
TESTING AND INSPECTION
153.806 Loading information.
153.808 Examination required for a Certificate of Compliance.
153.809 Procedures for having the Coast
Guard examine a vessel for a Certificate
of Compliance.
153.812 Inspection for Certificate of Inspection.

Subpart C—Operations
DOCUMENTS AND CARGO INFORMATION
153.900 Certificates and authorization to
carry a bulk liquid hazardsous material.
153.901 Documents: Posting, availability,
and alteration.
153.902 Expiration and invalidation of the
Certificates of Compliance.
153.903 Operating a United States ship in
special areas: Categories A, B, and C.
153.904 Limitations in the endorsement.
153.905 Regulations required to be on board.
153.907 Cargo information.
153.908 Cargo viscosity and melting point
information; measuring cargo temperature during discharge: Categories A, B,
and C.
153.909 Completing the Cargo Record Book
and record retention: Categories A, B, C,
and D.
153.910 Cargo piping plan.
153.912 Certficate of inhibition or stabilization.
GENERAL CARGO OPERATIONAL REQUIREMENTS
153.920
153.921
153.923

Cargo quantity limitations.
Explosives.
Inerting systems.

SPECIAL CARGO PROCEDURES
153.1000 Special operating requirements for
cargoes reactive with water.
153.1002 Special operating requirements for
heat sensitive cargoes.
153.1003 Prohibited carriage in deck tanks.
153.1004 Inhibited and stabilized cargoes.
153.1010 Alkylene oxides.
153.1011 Changing containment systems and
hoses to and from alkylene oxide service.
153.1020 Unusually toxic cargoes.
153.1025 Motor fuel antiknock compounds.
153.1035 Acetone cyanohydrin or lactonitrile
solutions.
153.1040 Carbon disulfide.
153.1045 Inorganic acids.
153.1046 Sulfuric acid.
153.1052 Carriage of other cargoes in acid
tanks.
153.1060 Benzene.
153.1065 Sodium chlorate solutions.
APPROVAL OF SURVEYORS AND HANDLING OF
CATEGORIES A, B, C, AND D CARGO AND NLS
RESIDUE

GENERAL VESSEL SAFETY
153.930 Cargo antidotes.
153.931 Obstruction
of
pumproom
ladderways.
153.932 Goggles and protective clothing.
153.933 Chemical protective clothing.
153.934 Entry into spaces containing cargo
vapor.
153.935 Opening of tanks and cargo sampling.
153.935a Storage of cargo samples.
153.936 Illness, alcohol, drugs.
MARKING OF CARGO TRANSFER HOSE
153.940

153.959 Approval to begin transfer operations required.
153.964 Discharge by gas pressurization.
153.966 Discharge by liquid displacement.
153.968 Cargo transfer conference.
153.970 Cargo transfer piping.
153.972 Connecting a cargo hose.
153.975 Preparation for cargo transfer.
153.976 Transfer of packaged cargo or ship’s
stores.
153.977 Supervision of cargo transfer.
153.979 Gauging with a sounding tube.
153.980 Isolation
of
automatic
closing
valves.
153.981 Leaving room in tank for cargo expansion.
153.983 Termination procedures.

Standards for marking of cargo hose.
CARGO TRANSFER PROCEDURES

153.953 Signals during cargo transfer.
153.955 Warning signs during cargo transfer.
153.957 Persons in charge of transferring liquid cargo in bulk or cleaning cargo
tanks.

153.1100 Responsibility of the person in
charge.
153.1101 Procedures for getting a Surveyor:
Approval of Surveyors.
153.1102 Handling and disposal of NLS residue: Categories A, B, C, and D.
153.1104 Draining of cargo hose: Categories
A, B, C, and D.
153.1106 Cleaning agents.
153.1108 Heated prewash for solidifying NLS,
high
viscosity
NLS
and
required
prewashes of NLS whose viscosity exceeds 25 mPa sec at 20 °C: Categories A,
B, and C.
153.1112 Prewash for tanks containing Category A NILS residue.
153.1114 Conditions under which a prewash
may be omitted: Categories A, B, and C.
153.1116 Prewash for tanks unloaded without following the approved Procedures
and Arrangements Manual: Category B
and C.

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§ 153.0

46 CFR Ch. I (10–1–00 Edition)

153.1118 Prewash of Categories B and C
cargo tanks not meeting stripping standards: Categories B and C.
153.1119 When to prewash and discharge
NLS residues from a prewash; unloading
an NLS cargo in a country whose Administration is not signatory to MARPOL 73/
78: Categories A, B, and C.
153.1120 Procedures for tank prewash: Categories A, B, and C.
153.1122 Discharges of NLS residue from
tank washing other than a prewash: Categories A, B, and C.
153.1124 Discharges of Category D NLS residue.
153.1126 Discharge of NLS residue from a
slop tank to the sea: Categories A, B, C,
and D.
153.1128 Discharge of NLS residue from a
cargo tank to the sea: Categories A, B, C,
and D.
153.1130 Failure of slops discharge recording
equipment; operating with, reporting
failures, and replacing pollution equipment: Category A, B, C, D.
153.1132 Reporting spills and non-complying
discharges: Category A, B, C, and D.
MAINTENANCE
153.1500
153.1502
153.1504
and

Venting system rupture disks.
Fixed ballast relocation.
Inspection of personnel emergency
safety equipment.

Subpart D—Test and Calculation Procedures for Determining Stripping Quantity, Clingage NLS Residue, and Total
NLS Residue
153.1600 Equipment required for conducting
the stripping quantity test.
153.1602 Test procedure for determining the
stripping quantity.
153.1604 Determining the stripping quantity
from the test results.
153.1608 Calculation of total NLS residue
and clingage NLS residue.
TABLE 1—SUMMARY OF MINIMUM REQUIREMENTS

TABLE 2—CARGOES NOT REGULATED UNDER
SUBCHAPTERS D OR O OF THIS CHAPTER
WHEN CARRIED IN BULK ON NON-OCEANGOING BARGES

APPENDIX I [RESERVED]
APPENDIX II—METRIC UNITS USED IN PART 153
AUTHORITY: 46 U.S.C. 3703; 49 CFR 1.46. Section 153.40 issued under 49 U.S.C. 5103. Sections 153.470 through 153.491, 153.1100 through
153.1132, and 153.1600 through 153.1608 also
issued under 33 U.S.C. 1903 (b).
SOURCE: CGD 73–96, 42 FR 49027, Sept. 26,
1977, unless otherwise noted.
EDITORIAL NOTE: Nomenclature changes for
Part 153 appear at 59 FR 17028, Apr. 11, 1994,

CGD 95–072, 60 FR 50465, Sept. 29, 1995 and at
CGD 96–041, 61 FR 50732, Sept. 27, 1996.

Subpart A—General
§ 153.0

Availability of materials.

(a) Various sections in this part refer
to the following documents which are
incorporated in Annex II of MARPOL
73/78.
(1) IMO Standards for Procedures and
Arrangements for the Discharge of Noxious Liquid Substances, Resolution
MEPC 18(22), 1985 in effect on April 6,
1987.
(2) IMO International Code for the Construction and Equipment of Ships Carrying Dangerous Chemicals in Bulk, Resolution MEPC 19(22), 1985 in effect on
April 6, 1987.
(3) IMO Code for the Construction and
Equipment of Ships Carrying Dangerous
Chemicals in Bulk, Resolution MEPC
20(22), 1985 in effect on April 6, 1987.
(b) The IMO documents listed in this
section are available from the following:
(1) IMO Secretariat, Publications section, 4 Albert Embankment, London
SE1 7SR, United Kingdom, Telex 23588;
(2) New York Nautical Instrument
and Service Company, 140 West Broadway, New York, NY 10013;
(3) Baker, Lyman & Company, 3220
South I–10 Service Road, Metairie, LA
70001.
(4) UNZ & Company, 190 Baldwin Avenue, Jersey City, NJ 07306.
(5) Southwest Instrument Company,
235 West 7th Street, San Pedro, CA
90731.
(6) Marine Education Textbooks, 124
North Van Avenue, Houma, LA 70363–
5895.
[CGD 81–101, 52 FR 7777, Mar. 12, 1987, as
amended by CGD 92–100, 59 FR 17028, Apr. 11,
1994]

§ 153.1

Applicability.

This part applies to the following:
(a) All United States self-propelled
ships and those foreign self-propelled
ships operating in United States waters
that carry in bulk a cargo listed in
Table 1 or allowed in a written permission under § 153.900(d), unless—
(1) The ship is carrying the cargo
under 33 CFR part 151;

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§ 153.2

(2) The ship is carrying the cargo in
a portable tank under subpart 98.30 or
98.33 of this chapter; or
(3) The ship is an offshore supply vessel carrying the cargo under subpart
98.31 of the chapter; or
(b) All United States oceangoing nonself-propelled ships and those foreign
non-self-propelled ships operating in
United States waters that carry in
bulk a Category A, B, or C NLS cargo
listed in Table 1 or allowed in a written
permission under § 153.900(d), unless—
(1) The ship is carrying the cargo
under 33 CFR part 151;
(2) The ship is carrying the cargo in
a portable tank under subpart 98.30 or
98.33 of this chapter;
(3) The ship is an offshore supply vessel carrying the cargo under subpart
98.31 of this chapter; or
(4) The ship’s Certificate of Inspection is endorsed for a limited short protected coastwise route and the ship is
constructed and certificated primarily
for service on an inland route.
(c) All ships that carry a bulk liquid,
liquefied gas, or compressed gas cargo
that is not—
(1) Listed in Table 1 of this part;
(2) Listed in Table 2 of this part;
(3) Carried under a written permission granted under § 153.900(d);
(4) Carried under part 30 through 35,
98, 151, or 154 of this chapter; or
(5) Carried as an NLS under 33 CFR
part 151.
[CGD 81–101, 52 FR 7777, Mar. 12, 1987, as
amended by CGD 84–025, 53 FR 15844, May 4,
1988; CGD 81–101, 53 FR 28974, Aug. 1, 1988 and
54 FR 12629, Mar. 28, 1989; CGD 84–043, 55 FR
37413, Sept. 11, 19905; CGD 96–041, 61 FR 50732,
Sept. 27, 1996]

§ 153.2

Definitions and acronyms.

As used in this part:
Accommodation spaces means halls,
dining rooms, lounges, lavatories, cabins, staterooms, offices, hospitals, cinemas, game and hobby rooms, pantries
containing no cooking appliances, and
similar permanently enclosed spaces.
Adequate reception facility means each
facility certified as adequate under 33
CFR 158.160 and each facility provided
by a Administration signatory to
MARPOL 73/78 under Regulation 7 of
Annex II.

Annex II means Annex II to MARPOL
73/78 and is the Annex to MARPOL 73/
78 regulating the discharge of noxious
liquid substances to the sea.
B means the breadth of the vessel
and is defined in § 42.13–15(d) of this
chapter.
Built means that a ship’s construction has reached any of the following
stages:
(1) The keel is laid.
(2) The mass of the partially assembled ship is 50,000 kg.
(3) The mass of the partially assembled ship is one percent of the estimated mass of the completed ship.
Cargo area means that part of a vessel that includes the cargo tanks,
spaces adjacent to the cargo tanks and
the part of the deck over the cargo
tanks and adjacent spaces.
Cargo containment system means a
cargo tank, its cargo piping system, its
venting system, and its gauging system.
Cargo handling space means an enclosed space that must be entered during a routine loading, carriage, or discharge of cargo and that contains an
element of the cargo containment system having a seal or packing to prevent the escape of cargo, such as a
valve, cargo pump, or cargo vapor compressor.
Cargo piping system means a tankship’s permanently installed piping arrangement, including any valves and
pumps, that carries cargo to or from a
cargo tank.
Cargo tank means a tank that:
(1) Is part of or permanently affixed
to a tankship; and
(2) Carries a cargo described in part
153, table 1.—SUMMARY OF MINIMUM
REQUIREMENTS in any quantity, including residual liquid or vapor.
Certificate of Compliance means a certificate issued by the Coast Guard that
a foreign flag vessel had been examined
and found to comply with the regulations in this chapter.
Closed gauging system means an arrangement for gauging the amount of
cargo in a tank, such as a float and
tape or a magnetically coupled float
and indicator, that does not have any
opening through which cargo vapor or
liquid can escape.

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§ 153.2

46 CFR Ch. I (10–1–00 Edition)

Combustible is defined in § 30.10–15 of
this chapter.
Commandant means Commandant of
the U.S. Coast Guard.
The term is often followed by a mailing
code in parentheses. The mailing address should include any mailing code
and should be written as follows:
Commandant (mailing code), U.S. Coast
Guard, 2100 Second Street SW. Washington,
D.C. 20593–0001.

Control space is defined in § 30.10–19a
of this chapter.
Cycle, means that the tank washing
machine progresses through complete
rotations until it reaches an orientation identical to its starting orientation.
NOTE: For a typical one or two nozzle tank
washing machine that rotates in both the
horizontal and vertical planes though more
slowly in one than the other, a cycle would
be at least one rotation in each plane of rotation.

Dedicated ballast tank means a tank
that is used only for ballast.
Emergency shutdown station means a
part of the tankship where the required
emergency shutdown controls are clustered.
Flammable is defined in § 30.10–22 of
this chapter.
Forward perpendicular is defined in
§ 42.13–15(b) of this chapter.
Hazardous material means a liquid
material or substance that is—
(1) Flammable or combustible;
(2) Designated a hazardous substance
under section 311(b) of the Federal
Water Pollution Control Act (33 U.S.C.
1321); or
(3) Designated a hazardous material
under 49 U.S.C. 5103.
NOTE: The Environmental Protection
Agency designates hazardous substances in
40 CFR Table 116.A. The Coast Guard designates hazardous materials that are transported as bulk liquids by water in § 153.40.

High viscosity NLS includes high viscosity Category B NLS and high viscosity Category C NLS.
High viscosity Category B NLS means
any Category B NLS having a viscosity
of at least 25 mPa.s at 20 °C and at
least 25 mPa.s at the time it is unloaded.
High viscosity Category C NLS means
any Category C NLS having a viscosity

of at least 60 mPa.s at 20 °C and at
least 60 mPa.s at the time it is unloaded.
IMO means the International Maritime Organization (IMO, formerly
Inter-Governmental Maritime Consultative Organization or IMCO).
IMO Bulk Chemical Code includes the
IMO International Code for the Construction and Equipment of Ships Carrying
Dangerous Chemicals in Bulk, Resolution MEPC 19(22), 1985 and the IMO
Code for the Construction and Equipment
of Ships Carrying Dangerous Chemicals in
Bulk, Resolution MEPC 20(22), 1985.
IMO Certificate includes a Certificate
of Fitness for the Carriage of Dangerous Chemicals in Bulk issued under
the IMO Code for the Construction and
Equipment of Ships Carrying Dangerous
Chemicals in Bulk, Resolution MEPC
20(22), 1985 and an International Certificate of Fitness for the Carriage of Dangerous Chemicals in Bulk issued under
the IMO International Code for the Construction and Equipment of Ships Carrying Dangerous Chemicals in Bulk, Resolution MEPC 19(22), 1985.
Independent, as applied to a cargo
piping, venting, heating or cooling system means that the system is connected to no other system, and has no
means available for connection to another system.
Independent tank means a cargo tank
that is permanently affixed to the vessel, that is self-supporting, that incorporates no part of the vessel’s hull and
that is not essential to the integrity of
the hull.
Intank cargo pump means a pump:
(1) Located within the cargo tank it
serves; and
(2) Whose piping passes through only
the top of the cargo tank.
Integral tank means a cargo tank that
also is part of or is formed in part by
the vessel’s hull structure so that the
tank and the hull may be stressed by
the same loads.
IOPP Certificate means an International Oil Pollution Prevention Certificate required under 33 CFR 151.19.
L means the length of the vessel and
is defined in § 42.13–15(a) of this chapter.
Liquid means each substance having
a vapor pressure of 172 kPa or less at
37.8 °C.

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§ 153.2

Marine Inspector is defined in § 30.10–
43 of this chapter.
MARPOL 73/78 means the International Convention for Prevention of
Pollution from Ships, 1973 (done at
London, November 2, 1973), modified by
the Protocol of 1978 relating to the
International Convention for Prevention of Pollution from Ships, 1973 (done
at London, on February 17, 1978).
Master means the person-in-charge of
a self-propelled or non-self-propelled
ship.
Mixture means a mixture containing
only the substances described in conjunction with the term.
Nearest land has the same meaning as
in 33 CFR 151.05(h).
Noxious
liquid
substance
(NLS)
means—
(1) Each substance listed in 33 CFR
151.47 or 33 CFR 151.49;
(2) Each substance having an ‘‘A,’’
‘‘B,’’ ‘‘C,’’ or ‘‘D’’ beside its name in
the column headed ‘‘Pollution Category’’ in Table 1; and
(3) Each substance that is identified
as an NLS in a written permission
issued under § 153.900(c).
NLS Certificate means an International Pollution Prevention Certificate for the Carriage of Noxious Liquid
Substances in Bulk issued under Annex
II of MARPOL 73/78.
Oceangoing ship has the same meaning as in 33 CFR 151.05(j).
Officer in Charge, Marine Inspection, is
defined in § 1.05(b) of this chapter.
Open gauging means an arrangement
for gauging the amount of cargo in a
tank through a large opening, such as a
tank hatch or ullage opening.
Open venting system means a venting
system that always allows vapor to
flow freely to and from the tank.
Phosphoric acid means phosphoric
acid, superphosphoric acid, and aqueous solutions of phosphoric acid.
Pressure-vacuum (PV) valve means a
valve that is normally closed and
which opens under a preset positive
pressure or a vacuum.
Prewash means a tank washing operation that meets the procedure in
§ 153.1120.
Pumproom means any enclosed space
containing a pump that is part of a
cargo containment system.

Reception facility means anything capable of receiving NLS residues in a
country whose Administration is not
signatory to MARPOL 73/78 and each
adequate reception facility.
Refrigerated tank means a cargo tank
that is equipped to carry a cargo that
must be cooled in order to keep the
cargo’s vapor pressure from exceeding
the tank’s pressure-vacuum or safety
relief valve setting under ambient conditions of 32 °C (approx. 90 °F) still
water and 46 °C (approx. 115 °F) still
air.
Relief valve setting means the inlet
line pressure at which a vent system’s
pressure-vacuum or safety relief valve
fully opens.
Residues and mixtures containing NLSs
(NLS residue) means—
(1) Any Category A, B, C, or D NLS
cargo retained on the ship because it
fails to meet consignee specifications;
(2) Any part of a Category A, B, C, or
D NLS cargo remaining on the ship
after NLS is discharged to the consignee, including but not limited to
puddles on the tank bottom and in
sumps, clingage in the tanks, and substance remaining in the pipes; or
(3) Any material contaminated with
a Category A, B, C, or D NLS cargo, including but not limited to bilge slops,
ballast, hose drip pan contents, and
tank wash water.
Restricted gauging system means a
method of gauging the amount of cargo
in a tank through an opening of limited size that restricts or prevents the
release of cargo vapors from the tank
vapor space.
Safety relief (SR) valve means a normally closed valve that opens under a
preset positive pressure.
Separate and separated, as applied to a
cargo piping, venting, heating or cooling system, means either an independent system or one that may be disconnected from all other systems by:
(a) Removing spool pieces or valves
and blanking the open pipe ends; or
(b) Blocking each system interconnection with two blind flanges in
series and providing a means of detecting leakage into the pipe section between the flanges.
Service spaces means spaces outside
the cargo area used for galleys, pantries containing cooking appliances,

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§ 153.3

46 CFR Ch. I (10–1–00 Edition)

lockers, store rooms, workshops other
than those forming part of machinery
spaces, and trunks to such spaces.
Ship means a vessel of any type whatsoever, including hydrofoils, air-cushion vehicles, submersibles, floating
craft whether self-propelled or not, and
fixed or floating platforms.
Slop tanks include slop tanks and
cargo tanks used as slop tanks.
Solidifying NLS means a Category A,
B, or C NLS that has a melting point—
(1) Greater than 0 °C but less than 15
°C and a temperature, measured under
the procedure in § 153.908(d), that is less
than 5 °C above its melting point at the
time it is unloaded; or
(2) 15 °C or greater and has a temperature, measured under the procedure in § 153.908(d), that is less than 10
°C above its melting point at the time
it is unloaded.
Solution means a water solution.
Special area means the Baltic Sea
Area as defined in 33 CFR 151.13(a)(2)
and the Black Sea Area as defined in 33
CFR 151.13(a)(3).
SR venting system means a venting
system in which an SR valve controls
vapor flow from the cargo tank.
Tankship has the same meaning as
‘‘ship’’.
Venting system means a permanent
piping arrangement leading from a
cargo tank and used to control the flow
of vapor to and from the tank.
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 78–128, 47 FR 21204, May 17,
1982; CGD 81–052, 50 FR 8732, Mar. 5, 1985; CGD
81–078, 50 FR 21170, May 22, 1985; CGD 81–101,
52 FR 7778, Mar. 12, 1987; CGD 81–101, 53 FR
28974, Aug. 1, 1988; CGD 88–070, 53 FR 34535,
Sept. 7, 1988; CGD 81–101, 54 FR 12629, Mar. 28,
1989; CGD 96–041, 61 FR 50732, Sept. 27, 1996;
CGD 95–028, 62 FR 51209, Sept. 30, 1997; USCG–
1998–4442, 63 FR 52191, Sept. 30, 1998]

§ 153.3 Right of appeal.
Any person directly affected by a decision or action taken under this part,
by or on behalf of the Coast Guard,
may appeal therefrom in accordance
with subpart 1.03 of this chapter.
[CGD 88–033, 54 FR 50381, Dec. 6, 1989]

§ 153.4 Incorporation by reference.
(a) Certain material is incorporated
by reference into this part with the approval of the Director of the Federal

Register in accordance with 5 U.S.C.
552(a). To enforce any edition other
than that specified in paragraph (b) of
this section, the Coast Guard must
publish notice of change in the FEDERAL REGISTER and make the material
available to the public. All approved
material is on file at the Office of the
Federal Register, 800 North Capitol
Street NW., suite 700, Washington, DC,
and at the U.S. Coast Guard, Office of
Operating and Environmental Standards (G–MSO), 2100 Second Street SW.,
Washington, DC 20593–0001 and is available from the sources indicated in
paragraph (b) of this section.
(b) The material approved for incorporation by reference in this part and
the sections affected are:
American National Standards Institute (ANSI)
11 West 42nd Street, New York, NY 10036
ANSI B16.5, Pipe Flanges and Flanged
Fittings, 1988 ..................................153.940
ANSI B16.24, Bronze Pipe Flanges and
Flanged Fittings, 1979.....................153.940
ANSI B16.31, Non-Ferrous Flanges,
1971..................................................153.940
American Society for Testing and Materials
(ASTM)
100 Barr Harbor Drive, West Conshohocken,
PA 19428–2959.
ASTM F 1122–87 (1992), Standard Specification for Quick Disconnect Couplings ..............................................153.940
ASTM F 1271–90 (1995), Standard Specification for Spill Valves for Use in
Marine Tank Liquid Overpressure
Protections Applications ................153.365
[CGD 88–032, 56 FR 35826, July 29, 1991, as
amended by CGD 96–041, 61 FR 50732, Sept. 27,
1996; CGD 97–057, 62 FR 51048, Sept. 30, 1997;
USCG–1999–5151, 64 FR 67183, Dec. 1, 1999]

§ 153.7 Ships built before December 27,
1977 and non-self-propelled ships
built before July 1, 1983: Application.
(a) Definitions.
(1) Permit means a Certificate of Inspection, Letter of Compliance, or Certificate of Compliance.
(2) Existing tankship means a tankship
for which a contract was let on or before December 27, 1977.
(3) Letter of Compliance in this section
means a letter issued by the Coast
Guard before 27 December 1977 which
permitted a foreign flag tankship to

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Coast Guard, DOT

§ 153.7

carry a bulk cargo regulated under this
part.
(b) Endorsements for existing tankships.
(1) The Coast Guard endorses the permit of an existing tankship to carry a
cargo listed in Table 1 if:
(i) The tankship held a permit on December 27, 1977, endorsed for the cargo
in question;
(ii) The tankship meets the construction standards under which the Coast
Guard issued the permit; and
(iii) The tankship meets the standards in paragraph (c) of this section.
(2) The Coast Guard endorses the permit of an existing tankship to carry a
cargo listed in Table 1 if:
(i) The tankship held a permit on December 27, 1977;
(ii) The Coast Guard did not require
the permit to be endorsed with the
name of the cargo at any time before
December 27, 1977;
(iii) The tankship meets the construction standards under which the
Coast Guard issued the permit;
(iv) The tankship carried the cargo in
question; and
(v) The tankship meets the standards
in paragraph (c) of this section.
(3) The Coast Guard endorses the permit of an existing tankship to carry a
cargo listed in Table 1 if:
(i) The tankship held a permit on December 27, 1977 endorsed to carry class
B or C poisons under 46 CFR part 39;
(ii) The cargo in question is a class B
or C poison;
(iii) The tankship meets the construction standards in 46 CFR part 39;
and
(iv) The tankship meets the standards in paragraph (c) of this section.
(4) The Commandant (G–MSO) considers on a case by case basis endorsing
the permit of an existing tankship to
carry a cargo listed in Table 1 if:
(i) The tankship does not come within the categories described in paragraphs (b) (1) through (3) of this section;
(ii) The tankship meets paragraph (c)
of this section; and
(iii) The tankship meets any additional requirements the Commandant
(G–MSO) may prescribe.
(c) An existing tankship must meet
all the requirements of this part except

as provided in paragraphs (c) (3), (4), (5)
and (6) of this section.
(1)–(2) [Reserved]
(3) The Commandant (G–MSO) considers on a case by case basis endorsing
as a type II containment system one
that fails to meet §§ 153.231(b), 153.234,
172.130 and 172.133 of this chapter if the
tankship and containment system
meet the following minimum conditions:
(i) The tankship has a loadline certificate.
(ii) The cargo tank is not part of the
tankship’s shell plating.
(iii) The distance between the bottom
plating of the cargo tank and the bottom shell plating of the tankship is at
least 76 cm measured parallel to the
vertical axis of the tankship.
(4) The Commandant (G–MSO) considers on a case by case basis endorsing
a containment system as a type II containment system if:
(i) The containment system is modified to meet § 153.231(b) by adding double bottoms or wing tanks; and
(ii) The tankship can survive the
damage described in §§ 172.135 and
172.150 of this chapter to those parts of
the tankship other than machinery
spaces.
(5) The Commandant (G–MSO) considers on a case by case basis endorsing
as a type III containment system one
that does not meet §§ 153.234, 172.130 and
172.133 of this chapter if the tankship
has a load line certificate.
(6) The Commandant (G–MSO) considers on a case by case basis endorsing
the tankship to carry cargoes listed in
Table 1 of this part if the tankship does
not meet §§ 153.217, 153.219 and 153.254.
(d) Except as required by this paragraph, subpart B of this part does not
apply to a non-self-propelled ship that
carries an NLS cargo under this part
if—
(1) The ship was built before July 1,
1983;
(2) The ship carries no NLS cargo or
NLS residue at any time it is in waters
of another Administration signatory to
MARPOL 73/78;
(3) The NLS does not require a type I
containment system;
(4) The ship meets all requirements
in parts 30 through 34 and part 151 of
this chapter that apply to the cargo;

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§ 153.8

46 CFR Ch. I (10–1–00 Edition)

(5) The ship meets the provisions in
§ 153.216 and §§ 153.470 through 153.491
applying to the NLS category of that
cargo;
(6) When the ‘‘Special Requirements’’
column of Table 1 contains an entry for
§ 153.408 or § 153.409 beside the cargo
name, the ship meets the section, except the system prescribed by the section need be capable of operation only
during loading;
(7) [Reserved]
(8) No part of the ship’s hull plating
is a component of a cargo tank if the
cargo tank is endorsed to carry a cargo
having a type II containment system in
Table 1.
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 78–128, 47 FR 21204, May 17,
1982; CGD 82–063b, 48 FR 4781, Feb. 3, 1983;
CGD 79–023, 48 FR 51009, Nov. 4, 1983; CGD 81–
052, 50 FR 8733, Mar. 5, 1985; CGD 81–101, 52
FR 7779, Mar. 12, 1987; CGD 81–101, 53 FR
28974, Aug. 1, 1988 and 54 FR 12629, Mar. 28,
1989; CGD 95–072, 60 FR 54106, Oct. 19, 1995]

§ 153.8 Procedures for requesting an
endorsed Certificate of Inspection.
(a) When applying for the endorsed
Certificate of Inspection that § 153.900
requires for a ship to carry a cargo listed in Table 1, the applicant must proceed as follows:
(1) Send a letter to one of the Coast
Guard offices listed in § 91.55–15 of this
chapter that includes—
(i) A request for the endorsed Certificate of Inspection;
(ii) The name of the ship; and
(iii) A list of the cargoes from Table
1 the applicant wishes the endorsement
to allow.
(2) Supply to the Coast Guard when
requested—
(i) Hull type calculations;
(ii) The plans and information listed
in §§ 54.01–18, 56.01–10, 91.55–5 (a), (b), (d),
(g), and (h), and 110.25–1 of this chapter;
(iii) A copy of the Procedures and Arrangements
Manual
required
by
§ 153.490; and
(iv) Any other ship information, including plans, design calculations, test
results, certificates, and manufacturer’s data, that the Coast Guard needs
to determine if the ship meets this
part.
(b) The Coast Guard notifies the applicant in writing—

(1) Whether any further information
is necessary to evaluate the request for
the endorsed Certificate of Inspection;
and
(2) Of the outcome of the request for
the endorsed Certificate of Inspection.
(c) The Coast Guard returns the Procedures and Arrangements Manual
stamped ‘‘Approved’’ or indicating
what corrections are necessary.
NOTE: The procedures for requesting an
IOPP Certificate are found in 33 CFR Part
151.
[CGD 81–101, 52 FR 7779, Mar. 12, 1987]

§ 153.9 Foreign flag vessel endorsement application.
(a) Application for a vessel whose flag
administration is signatory to MARPOL
73/78 and issues IMO Certificates. A person who desires a Certificate of Compliance endorsed to carry a cargo in
table 1 of this part, as described in
§ 153.900 of this part, must request the
endorsement from the cognizant Officer in Charge, Marine Inspection and
have aboard the vessel copies of IMO
Certificates issued by the vessel’s administration and—
(1) An additional classification society statement that the vessel complies
with § 153.530 (b), (d), and (p)(1) if a person desires a Certificate of Compliance
endorsed with the name of an alkylene
oxide; and
(2) An additional classification society statement that the vessel complies
with §§ 153.370, 153.371, and 153.438 if a
person desires a Certificate of Compliance endorsed with the name of a cargo
whose vapor pressure exceeds 100 kPa
absolute at 37.8 °C (approximately 14.7
psia at 100 °F).
(b) Application for a vessel whose flag
administration does not issue IMO Certificates. A person who desires a Certificate of Compliance 1 endorsed with the
name of a cargo in Table 1 of this part,
as described in § 153.900, must submit to
Commanding Officer, U.S. Coast Guard
Marine Safety Center (MSC), 400 Seventh St., SW., Washington, DC 20590–
0001 an application that includes the
following information:
(1) A copy of the vessel’s Cargo Ship
Safety Construction Certificate and
Cargo Ship Safety Equipment Certificate issued under the International

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Coast Guard, DOT

§ 153.12

Convention for Safety of Life at Sea,
1974.
(2) A list of those cargoes for which
the Letter of Compliance is to be endorsed.
(3) The specific tanks that are to be
endorsed for each cargo.
(4) The names of the U.S. ports in
which the person anticipates operating
the vessel.
(5) The name of the vessel’s flag administration.
(6) The name of the society that
classes the vessel.
(7) A brief description of the vessel’s
cargo containment systems.
(8) Hull type calculations.
(9) The plans and information listed
in §§ 54.01–18, 56.01–10, 91.55–5 (a), (b), (d),
(g), and (h), and 111.05–5(d) of this chapter.
(c) Conditions applying to all Certificate of Compliance applications. (1) If requested by the Commanding Officer,
U.S. Coast Guard Marine Safety Center
(MSC), 400 Seventh St., SW., Washington, DC 20590–0001, a person desiring
a Certificate of Compliance for a vessel
must furnish any other vessel information such as plans, design calculations,
test results, certificates, and manufacturer’s data, that the Coast Guard
needs to determine that the vessel
meets the standards of this part.
(2) Correspondence with the Coast
Guard and vessel information submitted under this part must be in
English except IMO Certificates which
may be in French.
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 81–052, 50 FR 8733, Mar. 5,
1985; 50 FR 15895, Apr. 23, 1985; CGD 88–070, 53
FR 34535, Sept. 7, 1988; CGD 88–070, 53 FR
37570, Sept. 27, 1988; CGD 89–025, 54 FR 19571,
May 8, 1989; CGD 90–008, 55 FR 30663, July 26,
1990; CGD 92–100, 59 FR 17028, Apr. 11, 1994;
CGD 95–027, 61 FR 26008, May 23, 1996]

§ 153.10 Procedures for requesting alternatives and waivers; termination
of waivers.
(a) The Coast Guard considers allowing the use of an alternative in place of
a requirement in this part if—
(1) The person wishing to use the alternative sends a written application
to the Commandant (G–MSO) explaining—
(i) The requirement in this part that
would not be met and the reason why;

(ii) The alternative the person proposes to be substituted; and
(iii) How the alternative would ensure a level of safety and pollution protection at least equal to that of the requirement for which the alternative
would substitute;
(2) The alternative does not substitute an operational standard for a
design or equipment standard; and
(3) The Commandant (G–MSO) determines that the alternative provides a
level of protection for purposes of safety and pollution at least equal to the
requirement in this part.
(b) The Coast Guard considers granting a waiver of a requirement for which
this part allows a waiver if the person
wishing the waiver sends a written application to the Commandant (G–MSO)
that includes—
(1) A citation of the regulation that
allows the waiver; and
(2) Any information and pledges that
the regulation requires to be submitted
with the application for the waiver.
(c) The Commandant notifies the applicant in writing—
(1) Whether any further information
is necessary to evaluate the request for
an alternative or waiver; and
(2) Of the outcome of the request for
an alternative or waiver.
(d) A waiver issued under this part
terminates if any—
(1) Information required to be supplied with the application for the waiver changes;
(2) Pledges required to be supplied
with the application for the waiver are
repudiated;
(3) Restrictions or procedures applying to operations under the waiver are
violated; or
(4) Requirements in the section of
this part authorizing the waiver are
violated.
[CGD 81–101, 52 FR 7780, Mar. 12, 1987]

§ 153.12 IMO Certificates for United
States Ships.
Either a classification society authorized under 46 CFR part 8, or the Officer in Charge, Marine Inspection,
issues a United States ship an IMO Certificate endorsed to allow the carriage
of a hazardous material or NLS cargo
in table 1 of this part if the following
requirements are met:

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§ 153.15

46 CFR Ch. I (10–1–00 Edition)

(a) The ship’s owner must make a request to the OCMI for the IMO Certificate.
(b) The ship must meet this part.
(c) Self-propelled ships contracted for
after November 1, 1973 but built before
December 28, 1977 must meet requirements in this part that apply to a selfpropelled ship built on December 28,
1977.
(d) Non-self-propelled ships contracted for after November 1, 1973 but
built before July 1, 1983 must meet the
requirements in this part applying to
non-self-propelled ships built on July 1,
1983.
[CGD 81–101, 52 FR 7780, Mar. 12, 1987, as
amended by CGD 95–010, 62 FR 67537, Dec. 24,
1997]

§ 153.15 Conditions under which the
Coast Guard issues a Certificate of
Inspection or Certificate of Compliance.
(a) The Coast Guard issues the endorsed Certificate of Inspection required under § 153.900 for a United
States ship to carry a hazardous material or NLS listed in Table 1 if—
(1) The person wishing the Certificate
of Inspection applies following the procedures under § 153.8; and
(2) The ship meets the design and
equipment requirements of this part
and—
(i) Subchapter D of this chapter if the
hazardous material or NLS is flammable or combustible; or
(ii) Either Subchapter D or I of this
chapter, at the option of the ship
owner, if the hazardous material or
NLS is non-flammable or non-combustible.
(b) The Coast Guard issues the endorsed Certificate of Compliance required under § 153.900 for a foreign ship
to carry a hazardous material or NLS
listed in Table 1 if—
(1) The person wishing the Certificate
of Compliance follows the procedures
under § 153.9;
(2) The ship has an IMO Certificate
issued by its Administration and endorsed with the name of the hazardous
material or NLS if the ship’s Administration is signatory to MARPOL 73/78;
(3) The ship meets the requirements
of this part applying to United States
ships and § 30.01–5(e) of this chapter if

the ship’s Administration is not signatory to MARPOL 73/78; and
(4) The ship meets any additional design and equipment requirements specified by the Commandant (G–MSO).
[CGD 81–101, 52 FR 7780, Mar. 12, 1987]

§ 153.16 Requirements for foreign flag
vessel permits.
To have its Certificate of Compliance
endorsed to carry a cargo listed in
Table 1, a foreign flag vessel must:
(a) Have an IMO Certificate, if the
flag administration issues IMO Certificates, endorsed with the name of the
cargo and meet any specific requirements in this subpart that the Commandant (G–MSO) may prescribe; or
(b) Meet the requirements of this
subpart and § 30.01–5(e) of this chapter.
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 82–063b, 48 FR 4781, Feb. 3,
1983; CGD 81–052, 50 FR 8733, Mar. 5, 1985; CGD
81–101, 52 FR 7780, Mar. 12, 1987; CGD 95–027,
61 FR 26008, May 23, 1996]

§ 153.30 Special area endorsement.
The Coast Guard endorses the Certificate of Inspection of a United States
ship allowing it to operate in special
areas if the ship owner—
(a) Requests the endorsement following the procedures in § 153.8;
(b) Shows that the ship meets the design and equipment requirements applying to ships operating in special
areas contained in Regulations 5, 5A,
and 8 of Annex II and the Standards for
Procedures and Arrangements.
[CGD 81–101, 52 FR 7780, Mar. 12, 1987]

§ 153.40 Determination of materials
that are hazardous.
Under the authority delegated by the
Secretary of Transportation in 49 CFR
1.46(t) to carry out the functions under
49 U.S.C. 1803, the Coast Guard has
found the following materials to be
hazardous when transported in bulk:
(a) Materials listed in Table 30.25–1 of
this chapter.
(b) Materials listed in Table 151.05.
(c) Materials listed in Table 1.1
1 Those hazardous material cargoes designated Category A, B, C, or D in Table 1 are
also Noxious Liquid Substances under Annex
II and the Act to Prevent Pollution from
Ships, 33 U.S.C. 1901 et seq.

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Coast Guard, DOT

§ 153.214

(d) Materials listed in Table 4 of Part
154.
(e) Materials that are NLSs under
MARPOL Annex II.
(f) Liquids, liquefied gases, and compressed gases, that are—
(1) Listed in 49 CFR 172.101;
(2) Listed in 49 CFR 172.102; or
(3) Listed or within any of the definitions in subparts C through O of 49 CFR
part 173.
(g) Those liquid, liquefied gas, and
compressed gas materials designated as
hazardous in the permissions granted
under § 153.900(c).2
[CGD 81–101, 52 FR 7780, Mar. 12, 1987]

Subpart B—Design and Equipment
GENERAL VESSEL REQUIREMENTS
§ 153.190

Stability requirements.

Each vessel must meet the applicable
requirements in Subchapter S of this
chapter.
[CGD 79–023, 48 FR 51009, Nov. 4, 1983. Redesignated by CGD 81–101, 52 FR 7780, Mar. 12,
1987]

§ 153.201 Openings to accommodation,
service or control spaces.
(a) Except as allowed in paragraph (b)
of this section, entrances, ventilation
intakes and exhausts, and other openings to accommodation, service, or
control spaces must be located aft of
the house bulkhead facing the cargo
area a distance at least equal to the
following:
(1) 3 m (approx. 10 ft) if the vessel
length is less than 75 meters (approx.
246 ft).
(2) L/25 if the vessel length is between
75 and 125 meters (approx. 246 ft and 410
ft).
(3) 5 m (approx. 16.5 ft) if the vessel
length is more than 125 meters (approx.
410 ft).
(b) Fixed port lights, wheelhouse
doors, and windows need not meet the
location requirements specified in
paragraph (a) of this section if they do
2 The Coast Guard continues to propose in
the FEDERAL REGISTER any addition of these
designated hazardous materials to one of the
tables referred to in paragraphs (a) through
(d).

not leak when tested with a fire hose
at 207 kPa gauge (30 psig).
[CGD 81–078, 50 FR 21173, May 22, 1985]

§ 153.208

Ballast equipment.

(a) Except for the arrangement described in paragraph (b) of this section
no piping that serves a dedicated ballast tank that is adjacent to a cargo
tank may enter an engine room or accommodation space.
(b) Piping used only to fill a dedicated ballast tank adjacent to a cargo
tank may enter an engine room or accommodation space if the piping has a
valve or valving arrangement:
(1) Within the part of the tankship
where a containment system may be
located under § 153.234;
(2) That allows liquid to flow only towards that ballast tank (such as a
check valve); and
(3) That enables a person to shut off
the fill line from the weatherdeck
(such as a stop valve).
(c) Except as prescribed in paragraph
(d) of this section, pumps, piping, vent
lines, overflow tubes and sounding
tubes serving dedicated ballast tanks
must not be located within a cargo
containment system.
(d) Each vent line, overflow tube and
sounding tube that serves a dedicated
ballast tank and that is located within
a cargo containment system must meet
§ 32.60–10(e)(2) of this chapter.
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 78–128, 47 FR 21207, May 17,
1982]

§ 153.209

Bilge pumping systems.

Bilge pumping systems for cargo
pumprooms, slop tanks, and void
spaces separated from cargo tanks by
only a single bulkhead must be entirely within the locations allowed containment systems in § 153.234.
§ 153.214 Personnel emergency
safety equipment.

and

Each self-propelled ship must have
the following:
(a) Two stretchers or wire baskets
complete with equipment for lifting an
injured person from a pumproom or a
cargo tank.

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§ 153.215

46 CFR Ch. I (10–1–00 Edition)

(b) In addition to any similar equipment required by Subchapter D of this
chapter, three each of the following:
(1) A 30 minute self-contained breathing apparatus of the pressure demand
type, approved by the Mining Safety
and Health Administration (formerly
the Mining Enforcement and Safety
Administration) and the National Institute for Occupational Safety and
Health, or the tankship’s flag administration with five refill tanks or cartridges of 30 minutes capacity each.
(2) A set of overalls or large apron,
boots, long sleeved gloves, and goggles,
each made of materials resistant to the
cargoes in Table 1 that are endorsed on
the Certificate of Inspection or Certificate of Compliance.
(3) A steel-cored lifeline with harness.
(4) An explosion-proof lamp.
(c) First aid equipment.
[GCD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 77–222, 43 FR 57256, Dec. 7,
1978; CGD 78–128, 47 FR 21207, May 17, 1982;
CGD 81–052, 50 FR 8733, Mar. 5, 1985; CGD 81–
101, 52 FR 7781, Mar. 12, 1987]

§ 153.215 Safety equipment lockers.
Each self-propelled ship must have
the following:
(a) Each tankship must have at least
two safety equipment lockers.
(b) One safety equipment locker must
be adjacent to the emergency shutdown
station required by § 153.296(b). This
locker must contain one set of the
equipment required by § 153.214(a) and
two sets of that required by § 153.214(b).
(c) The second safety equipment
locker must be adjacent to the second
emergency shutdown station required
by § 153.296. This locker must contain
the remaining equipment required by
§ 153.214 (a) and (b).
(d) Each safety equipment locker
must be marked as described in § 153.955
(c), (d), and (e) with the legend ‘‘SAFETY EQUIPMENT.’’
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 78–128, 47 FR 21207, May 17,
1982; CGD 81–101, 52 FR 7781, Mar. 12, 1987]

§ 153.216 Shower and eyewash fountains.
(a) Each non-self-propelled ship must
have a fixed or portable shower and
eyewash fountain that operates during

cargo transfer and meets paragraph (c)
of this section.
(b) Each self-propelled ship must
have a shower and eyewash fountain
that operates at all times and meets
paragraph (c) of this section.
(c) The shower and eyewash fountains required by paragraphs (a) and (b)
of this section must—
(1) Operate in any ambient temperature;
(2) Dispense water at a temperature
between 0 °C and 40 °C (approx. 32 °F
and 104 °F);
(3) Be located on the weatherdeck;
and
(4) Be marked ‘‘EMERGENCY SHOWER’’ as described in § 153.955 (c), (d), and
(e), so that the marking is visible from
work areas in the part of the deck
where the cargo containment systems
are located.
[CGD 81–101, 52 FR 7781, Mar. 12, 1987]

§ 153.217 Access to enclosed spaces
and dedicated ballast tanks.
An access opening to an enclosed
space or a dedicated ballast tank must
meet the requirements for a cargo tank
access in § 153.254 (b), (c), and (d) if:
(a) The enclosed space or dedicated
ballast tank is located within the cargo
area of the vessel; or
(b) A part of a cargo containment
system lies within the enclosed space
or dedicated ballast tank.
[CGD 78–128, 47 FR 21207, May 17, 1982]

§ 153.219 Access to double bottom
tanks serving as dedicated ballast
tanks.
(a) Except as prescribed in paragraph
(b) of this section, access openings to
double bottom tanks serving as dedicated ballast tanks must not be located
within a cargo containment system.
(b) Each access opening to a double
bottom tank that is a dedicated ballast
tank and that is located within a cargo
containment system must be:
(1) Enclosed in an access trunk extending to the weatherdeck;
(2) Separated from the cargo containment system by two manhole coverings; or

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Coast Guard, DOT

§ 153.234

(3) Approved by the Commandant (G–
MSO).

hulls are in subpart F of part 172 of this
chapter.

[CGD 78–128, 47 FR 21207, May 17, 1982, as
amended by CGD 82–063b, 48 FR 4782, Feb. 3,
1983]

[CGD 79–023, 48 FR 51009, Nov. 4, 1983]

CARGO CONTAINMENT SYSTEMS
§ 153.230

Type I system.

A type I containment system must
meet the following requirements:
(a) The vessel must meet the requirements in subpart F of part 172 of this
chapter for a type I hull.
(b) Except as described in § 153.235:
(1) It may be no closer to the tankship’s shell than 76 cm (approx. 29.9
in.); and
(2) It may not be located in any part
of the tankship subject to the damage
described in Table 172.135 of this chapter for:
(i) COLLISION PENETRATION, Transverse extent; and
(ii)
GROUNDING
PENETRATION,
Vertical extents from the baseline upward.
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 79–023, 48 FR 51009, Nov. 4,
1983]

§ 153.231

Type II system.

A type II containment system must
meet the following requirements:
(a) The vessel must meet the requirements in subpart F of part 172 of this
chapter for a type I or II hull.
(b) Except as allowed in §§ 153.7 and
153.235—
(1) It may be no closer to the tankship’s shell than 76 cm (approx. 29.9
in.); and
(2) It may not be located in any part
of the tankship subject to the damage
described in Table 172.135 of this chapter
for
GROUNDING
PENETRATION,
Vertical extent from the baseline upward.
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 79–023, 48 FR 51009, Nov. 4,
1983; CGD 81–101, 52 FR 7781, Mar. 12, 1987]

§ 153.232

Type III system.

A type III containment system must
be in either a type I, II, or III hull. The
requirements for type I, II, and III

§ 153.233 Separation of tanks from machinery, service and other spaces.
(a) To prevent leakage through a single weld failure, the following spaces
must be separated from a cargo by two
walls, two bulkheads, or a bulkhead
and a deck not meeting in a cruciform
joint:
(1) Machinery spaces.
(2) Service spaces.
(3) Accommodation spaces.
(4) Spaces for storing potable domestic, or feed water.
(5) Spaces for storing edibles.
(b) Some examples of arrangements
that may separate cargo from the
spaces listed in paragraph (a) of this
section are the following:
(1) Dedicated ballast tanks.
(2) Cargo pumprooms.
(3) Ballast pumprooms.
(4) Tanks not carrying a cargo listed
in this part.3
(5) A cofferdam aft of the cargo containment systems and whose forward
bulkhead is forward of any joint common to an accommodations space and
the deck.
(6) Double walled piping or a piping
tunnel.
§ 153.234

Fore and aft location.

Except as allowed in § 153.7, each ship
must meet the following:
(a) Each cargo containment system
and any compartments within which a
containment system is located must be
forward of a tankship’s accommodation
spaces.
(b) Except as described in § 153.235,
each cargo containment system must
be located at least 0.05L aft of the forward perpendicular, but in no case forward of a collision bulkhead.
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 81–101, 52 FR 7781, Mar. 12,
1987]
3 See also §§ 32.56–5 and 32.60–10 of this chapter for limitations on the stowage of combustible liquids adjacent to ignition sources.

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§ 153.235

46 CFR Ch. I (10–1–00 Edition)

§ 153.235 Exceptions to cargo piping
location restrictions.
Cargo piping must not be located in
those areas from which a containment
system is excluded by §§ 153.230(b),
153.231(b), and 153.234(b) unless the
cargo piping:
(a) Drains back to the cargo tank
under any heel or trim resulting from
the damage specified in § 172.135 of this
chapter; and
(b) Enters the cargo tank above the
liquid level for a full tank in any condition of heel or trim resulting from
the damage specified in § 172.135 of this
chapter.
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 79–023, 48 FR 51009, Nov. 4,
1983]

§ 153.236 Prohibited materials.
When one of the following paragraphs
of this section is referenced in Table 1,
the materials listed in that paragraph
may not be used in components that
contact the cargo liquid or vapor:
(a) Aluminum or aluminum alloys.
(b) Copper or copper alloys.
(c) Zinc, galvanized steel or alloys
having more than 10 percent zinc by
weight.
(d) Magnesium.
(e) Lead.
(f) Silver or silver alloys.
(g) Mercury.
§ 153.238 Required materials.
When one of the following paragraphs
of this section is referenced in Table 1,
only those materials listed in that
paragraph may be used in components
that contact the cargo liquid or vapor:
(a) Aluminum, stainless steel, or
steel covered with a protective lining
or coating.
(b) With cargo concentrations of 98
percent or greater, aluminum or stainless steel.
(c) With cargo concentrations of less
than 98 percent, 304L or 316 stainless
steel.
(d) Solid austenitic stainless steel.
(e) Stainless steel or steel covered
with a suitable protective lining or
coating. (See § 153.266.)
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 88–100, 54 FR 40041, Sept. 29,
1989]

§ 153.239

Use of cast iron.

(a) Cast iron used in a cargo containment system must meet the requirements of § 56.60–10(b) of this chapter.
(b) For purposes of this section, the
term ‘‘lethal products’’ in § 56.60–10(b)
means those cargoes that Table 1 references to § 153.525 or § 153.527.
[CGD 78–128, 47 FR 21207, May 17, 1982]

§ 153.240

Insulation.

Cargo containment system insulation
made necessary by the requirements of
this part must meet the requirements
in § 38.05–20 of this chapter. However,
the vapor barrier required by § 38.05–
20(b) is unnecessary if the insulation is:
(a) Protected from the weather, and
attached to a containment system
maintained at a temperature in excess
of 46 °C (approx. 115 °F); or
(b) In an atmosphere whose dewpoint
is less than the temperature of any surface in contact with the insulation.
CARGO TANKS
§ 153.250 Double-bottom
tanks as cargo tanks.

and

deep

Except in those cases in which Commandant (G–MSO) specifically approves another arrangement, such as a
double-bottom or deep tank as a cargo
tank, an integral cargo tank or the
hold within which an independent
cargo tank is located must extend to
the weatherdeck.
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 82–063b, 48 FR 4781, Feb. 3,
1983]

§ 153.251

Independent cargo tanks.

All independent cargo tank must
meet § 38.05–10 (a)(1), (b), (d), and (e)(1)
of this chapter.
[CGD 78–128, 47 FR 21208, May 17, 1982]

§ 153.252 Special requirement for an
independent cargo tank.
When Table 1 refers to this section,
the cargo tank must be an independent
tank that meets §§ 38.05–2(d) and 38.05–
4(g) of this chapter. (See also
§ 153.256(b)).
[CGD 78–128, 47 FR 21208, May 17, 1982]

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Coast Guard, DOT
§ 153.254

§ 153.284

Cargo tank access.

(a) A cargo tank must have at least
one covered manhole opening into the
vapor space described in § 153.354.
(b) An access through a vertical
cargo tank surface must be at least 60
cm by 80 cm (approx. 23.6 × 31.5 in.) and
no more than 60 cm above a foothold
grating, or surface on both sides of the
access way.
(c) An access through a horizontal
cargo tank surface must be at least 60
cm by 60 cm (approx. 23.6 × 23.6 in.).
(d) An access trunk must be no less
than 76 cm (approx. 29.9 in.) in diameter.
§ 153.256 Trunks, domes, and openings
of cargo tanks.
(a) The hatch of a cargo tank must:
(1) Be at the highest point of the
tank; and
(2)
Open
on
or
above
the
weatherdeck.
(b) To be endorsed to carry a cargo
requiring an independent cargo tank, a
tank must have:
(1) A trunk or dome at the uppermost
part of the tank, extending above the
weatherdeck;
(2) Its hatch at the top of the trunk
or dome; and
(3)
No
openings
below
the
weatherdeck.
§ 153.266

Tank linings.

A tank lining must be:
(a) At least as elastic as the tank material; and
(b) Applied or attached to the tank as
recommended by the lining manufacturer.
PIPING SYSTEMS AND CARGO HANDLING
EQUIPMENT
§ 153.280

Piping system design.

(a) Each cargo piping system must
meet the standards of Part 56 and
§§ 38.10–1(b), 38.10–1(e), and 38.10–10(a) of
this chapter.
(b) Piping carrying cargo or cargo
residue may not enter any machinery
space except a cargo pumproom.
§ 153.281

Piping to independent tanks.

Piping for an independent cargo tank
must penetrate the tank only through

that part of the tank or dome extending above the weatherdeck.
[CGD 78–128, 47 FR 21208, May 17, 1982]

§ 153.282

Cargo filling lines.

The discharge point of a cargo tank
filling line must be no higher above the
bottom of the cargo tank or sump than
10 cm (approx. 4 in.) or the radius of
the filling line, whichever is greater.
§ 153.283

Valving for cargo piping.

(a) Except as described in this section, a cargo line must have a deck operable, manual stop valve:
(1) In each tank which the line
serves; and
(2) At each cargo hose connection
point.
(b) The valve required by paragraph
(a)(1) of this section may be in a cargo
pumproom at the pumproom bulkhead
if the cargo tank the cargo line serves
is adjacent to the pumproom.
(c) The valve required by paragraph
(a)(1) of this section may be on the
weatherdeck if:
(1) The weatherdeck is the top of the
tank;
(2) The line goes through the
weatherdeck into the tank; and
(3) The valve is at the point where
the line penetrates the weatherdeck.
(d) The valve required by paragraph
(a)(1) of this section may be outside the
tank if:
(1) The tank is an independent tank;
and
(2) The valve is at the point where
the line penetrates the tank.
(e) The discharge line of an intank
cargo pump need not have the valve required by paragraph (a)(1) of this section.
(f) If the cargo exerts a gravity head
pressure on a valve required by this
section, the valve must be a positive
shutoff valve that meets § 56.50–60(d) of
this chapter.
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 78–128, 47 FR 21208, May 17,
1982]

§ 153.284 Characteristics of required
quick closing valves.
A remotely actuated quick closing
shutoff valve required by § 153.530(n)
must:

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§ 153.285

46 CFR Ch. I (10–1–00 Edition)

(a) Be a positive shutoff valve;
(b) Be of the fail-closed type that
closes on loss of power;
(c) Be capable of local manual closing;
(d) Close from the time of actuation
in 30 seconds or less; and
(e) Be equipped with a fusible element that melts at less than 104 °C
(approx. 220 °F) and closes the valve.
[CGD 78–128, 47 FR 21208, May 17, 1982; 47 FR
27293, June 24, 1982]

§ 153.285 Valving
manifolds.

for

cargo

pump

(a) When cargo lines serving different
tanks enter a pumproom and connect
to the same pump:
(1) Each cargo line must have a stop
valve within the line;
(2) The valve must be before the
cargo line joins the other lines or
pump; and
(3) The valve must be within the
pumproom.
(b) The valve in paragraph (a) of this
section is required in addition to any
valve required under § 153.283(b).
§ 153.292

Separation of piping systems.

Cargo piping systems must be arranged so that operations necessary to
provide separate systems can be accomplished in a cargo handling space
or on the weatherdeck.
[CGD 78–128, 47 FR 21208, May 17, 1982]

§ 153.294

Marking of piping systems.

(a) Each cargo piping system must be
marked with the designation number of
the cargo tank it serves at each hose
connection, valve, and blind in the piping system. The markings must be in
characters at least 5 cm (approx. 2 in.)
high.
(b) Every hose connection of a cargo
piping system must be marked with
the cargo piping system’s working
pressure required by § 38.10–10(a) of this
chapter.4
§ 153.296 Emergency
tions.

shutdown

[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 78–128, 47 FR 21208, May 17,
1982]

§ 153.297 Emergency actuators at the
point of cargo control.
(a) The point from which cargo transfer is controlled must have the same
actuators an emergency shutdown station must have under § 153.296 and an
actuator for any deck water spray systems required by this part.
(b) The point from which cargo transfer is controlled may be one of the
emergency shutdown stations required
under § 153.296 if it meets the requirements of that section.

sta-

(a) Each tankship must have at least
two emergency shutdown stations.
4

(b) One emergency shutdown station
must be located forward of the deckhouse, in the after part of the
weatherdeck in which the cargo tanks
are located.
(c) A second emergency shutdown
station must be located so that one of
the two stations is accessible from any
part of the weatherdeck if a break in a
cargo piping system or hose causes
spraying or leaking.
(d) Each emergency shutdown station
must contain a single remote actuator
for all quick closing shutoff valves required by this part.
(e) Each emergency shutdown station
must have the controls necessary to
stop all cargo pumps on the tankship.
(f) Any remote emergency actuator,
such as that for a quick closing shutoff valve, a cargo pump, or a water
spray system, must be of a type that
will not defeat the operation of other
remote emergency actuators. The
emergency action must occur whether
one or several actuators are operated.
(g) Each emergency shutdown station
must be marked as described in § 153.955
(c), (d), and (e) with the legend ‘‘EMERGENCY SHUTDOWN STATION’’ so
that the legend is visible from work
areas in the part of the deck where the
cargo containment systems are located.

See § 153.280 of the part.

CARGO HANDLING SPACE VENTILATION
§ 153.310

Ventilation system type.

A cargo handling space must have a
permanent forced ventilation system of
the exhaust type.

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Coast Guard, DOT
§ 153.312

§ 153.334

Ventilation system standards.

A cargo handling space ventilation
system must meet the following:
(a) A ventilation system exhaust
duct must discharge no less than 10 m
(approx. 32.8 ft) from openings into or
ventilation intakes for, accommodation or service spaces.
(b) A ventilation system must not recycle vapors from ventilation discharges.
(c) Except for the space served by the
ventilation duct, a ventilation duct
must not pass through a machinery
room, an accommodation space, or
working spaces.
(d) A ventilation system must be operable from outside the space it ventilates.
(e) A ventilation system must be
sized to change the air in the ventilated space at least 30 times per hour.
(f) A ventilation system must not
allow air to stagnate in any part of a
ventilated space.
(g) A ventilation system must be able
to exhaust air from both above and
below the deck plates of a ventilated
space.
§ 153.314 Ventilation of spaces not usually occupied.
(a) Each tankship must have portable
ventilation equipment that fits the
mount required in paragraph (b)(1) of
this section.
(b) Each enclosed space within the
cargo area that does not have a permanent
ventilation
system
meeting
§ 153.312 must have:
(1) A mount for the portable mechanical ventilation equipment required by
this section; and
(2) Either permanent ventilation
ductwork connected to the mount and
arranged to supply air to the extremities of the space; or
(3) An attachment for temporary
ductwork at the mount with enough
ductway in the ventilated space and
temporary ductwork stowed aboard the
vessel to supply air to the extremities
of the space.
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 78–128, 47 FR 21208, May 17,
1982]

§ 153.316 Special cargo pumproom ventilation rate.
When Table 1 refers to this section,
the cargo pumproom ventilation system must change the air in the cargo
pumproom 45 times per hour and discharge no less than 4 m (approx. 13.1 ft)
above the deck.
CARGO PUMPROOMS
§ 153.330

Access.

(a) The access door to a cargo pumproom must open on the weatheredeck.
(b) The access way to a cargo pumproom and its valving must allow passage of a man wearing the breathing
apparatus required by § 153.214(b)(1).
(c) Each ladderway in a cargo pumproom must be free from obstructions
by piping, framework, or other equipment.
(d) Cargo pumproom ladders and platforms must have guard railings.
(e) Each ladder to a cargo pump-room
must have an incline from the horizontal of less than 60°.
§ 153.332

Hoisting arrangement.

(a) A cargo pumproom located below
the weatherdeck must have a permanent hoisting arrangement with a lifting capacity of 2500 N (approx. 562 lbs),
operable from the weatherdeck, for the
removal of an unconscious person.
(b) The cargo pumproom must have a
60 cm by 60 cm (approx. 2 ft by 2 ft)
cross-sectional clearance through the
hoistway.
§ 153.333 Cargo pump discharge pressure gauge.
Each cargo pump within a pumproom must have a discharge pressure
gauge outside the pumproom.
§ 153.334

Bilge pumping systems.

(a) A cargo pumproom must have a
bilge pumping system.
(b) The bilge pumping system must
have:
(1) Complete remote operating controls outside the cargo pumproom; and
(2) An alarm that operates when the
depth of liquid in the bilges exceeds 50
cm (approx. 19.7 in.).

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§ 153.336

46 CFR Ch. I (10–1–00 Edition)

§ 153.336 Special cargo pump or pumproom requirements.
(a) When Table 1 refers to this section:
(1) The cargo pump must be an
intank cargo pump;
(2) The cargo pumproom must be on
or above the weatherdeck; or
(3) The cargo pumproom must have
the specific approval of the Commandant (G–MSO).
(b) For a cargo pumproom described
in paragraph (a)(2) or (a)(3) the tankship must:
(1) Have a low pressure breathing
quality air supply system for use with
the breathing apparatus in the pumproom; or
(2) Meet any requirements specified
by the Commandant (G–MSO).
(c) A low pressure air supply system
described in paragraph (b)(1) of this
section must:
(1) Run from fixed air bottles to the
pumproom;
(2) Have an air compressor to recharge the fixed air bottles;
(3) have hose connections in the
pumproom suitable for use with the
breathing
apparatus
required
in
§ 153.214(b)(1); and
(4) have the air capacity to enable
two men to work in the pumproom for
at least one hour each without using
the cartridges for the breathing apparatus required in § 153.214(b)(1).
[CGD 78–128, 47 FR 21208, May 17, 1982, as
amended by CGD 82–063b, 48 FR 4781, Feb. 3,
1983]

CARGO VENTING SYSTEMS
§ 153.350 Location
charges.

of

B/3

vent

dis-

Except as prescribed in § 153.353, a
B/3 venting system must discharge:
(a) At the highest of the following
points:
(1) 6m (approx. 19.7 ft) above the
weatherdeck.
(2) B/3 above the weatherdeck.
(3) 6m (approx. 19.7 ft) above a walkway, if the walkway is within a 6m
(approx. 19.7 ft) horizontal radius from
the vent discharge.

(b) At least 15m (approx. 49.2 ft) from
air intakes for, or openings into, accommodation and service spaces.
[CGD 78–128, 47 FR 21208, May 17, 1982; 47 FR
27293, June 24, 1982]

§ 153.351 Location of 4m vent discharges.
Except as prescribed in § 153.353, a 4m
venting system must discharge:
(a) At least 4m (approx. 13.1 ft) above
the higher of:
(1) the weatherdeck; or
(2) any walkway that is within a 4m
(approx. 13.1 ft) horizontal radius from
the vent discharge.
(b) At least 10m (approx. 32.8 ft) from
air intakes for, or openings into, accommodation or service spaces.
[CGD 78–128, 47 FR 21208, May 17, 1982]

§ 153.352 B/3 and 4 m venting system
outlets.
A B/3 or 4 m venting system outlet
must:
(a) Discharge vertically upwards; and
(b) Prevent precipitation from entering the vent system.
§ 153.353 High velocity vents.
The discharge point of a B/3 or 4m
venting system must be located at
least 3m (approx. 10 ft) above the
weatherdeck or walkway if:
(a) The discharge is a vertical,
unimpeded jet;
(b) The jet has a minimum exit velocity of 30 m/sec (approx. 98.4 ft/sec); and
(c) The high velocity vent has been
approved by Commandant (G–MSO).
[CGD 78–128, 47 FR 21208, May 17, 1982, as
amended by CGD 82–063b, 48 FR 4782, Feb. 3,
1983]

§ 153.354 Venting system inlet.
A venting system must terminate in
the vapor space above the cargo when
the tank is filled to a 2 percent ullage
and the tankship has no heel or trim.
§ 153.355 PV venting systems.
When Table 1 requires a PV venting
system, the cargo tank must have a PV
valve in its vent line. The PV valve
must be located between the tank and
any connection to another tank’s vent
line (such as a vent riser common to
two or more tanks).

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Coast Guard, DOT
§ 153.358

§ 153.371

Venting system flow capacity.

(a) The cross-sectional flow area of
any vent system segment, including
any PV or SR valve, must at no point
be less than that of a pipe whose inside
diameter is 6.4 cm (approx. 2.5 in.).
(b) When Table 1 requires a closed or
restricted gauging system, calculations
must show that, under conditions in
which a saturated cargo vapor is discharged through the venting system at
the maximum anticipated loading rate,
the pressure differential between the
cargo tank vapor space and the atmosphere does not exceed 28 kPa gauge
(approx. 4 psig), or, for independent
tanks, the maximum working pressure
of the tank.
§ 153.360

Venting system restriction.

A venting system must have no assembly that could reduce its cross-sectional flow area or flow capacity to less
than that required in § 153.358.
§ 153.361 Arrangements for removal of
valves from venting systems having
multiple relief valves.
A venting system having multiple relief valves may be arranged to allow
the removal of a valve (for repair, as an
example) provided the venting system:
(a) Has valves that are interlocked,
so that the removal of a valve does not
reduce the venting system relieving capacity below the minimum relieving
capacity required by § 153.358; and
(b) Is arranged so that cargo vapor
will not escape through the opening
left after a valve has been removed.
[CGD 78–128, 47 FR 21208, May 17, 1982; 47 FR
27293, June 24, 1982]

§ 153.362

Venting system drain.

Unless a cargo vent system at every
point is level or slopes back to the
cargo tank under all conditions of heel
and trim allowed under § 153.806, the
cargo vent system must have a drain
valve at each low point (trap) in the
vent line.
§ 153.364

Venting system supports.

Supports for a vent system must
meet § 38.10–10(c) of this chapter.

§ 153.365 Liquid
protection.

overpressurization

(a) Except as noted in paragraph (b)
of this section, a containment system
requiring closed or restricted gauging
must:
(1) Be designed to withstand the maximum pressure that develops during an
overfill of the densest cargo endorsed
for the containment system; or
(2) Have an overflow control system
that meets § 153.408; or
(3) Meet the requirements specified
by the Commandant (G–MSO).
(b) A containment system requiring
restricted gauging, except for those
cargoes that reference §§ 153.525 or
153.527, may be equipped with a spill
valve that:
(1) Meets ASTM F 1271 (incorporated
by reference, see § 153.4); and
(2) Limits the maximum pressure
during liquid overfill at a specified
cargo loading rate to that which the
containment system is able to withstand (see §§ 153.294(b) and 152.977(b)).
[CGD 78–128, 47 FR 21208, May 17, 1982, as
amended by CGD 82–063b, 48 FR 4782, Feb. 3,
1983; CGD 88–032, 56 FR 35827, July 29, 1991;
USCG–2000–7790, 65 FR 58463, Sept. 29, 2000]

§ 153.368

Pressure-vacuum valves.

(a) The pressure side of a required
pressure-vacuum relief valve must
begin to open only at a pressure exceeding 3.5 kPa gauge (approx. 0.5 psig).
(b) A pressure-vacuum relief valve
must meet the requirements of Subpart
162.017 of this chapter.
§ 153.370 Minimum relief valve setting
for ambient temperature cargo
tanks.
The relief valve setting for a containment system that carries a cargo at
ambient temperature must at least
equal the cargo’s vapor pressure at 46
°C (approx. 115 °F).
[CGD 81–078, 50 FR 21173, May 22, 1985]

§ 153.371 Minimum relief valve setting
for refrigerated cargo tanks.
The relief valve setting for a containment system that carries a refrigerated
cargo must at least equal the lesser of:
(a) That in § 153.370; or

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§ 153.372

46 CFR Ch. I (10–1–00 Edition)

(b) 110 percent of the cargo’s vapor
pressure at the steady state temperature obtained by a full tank of cargo
with the refrigeration system operating under ambient conditions described within the definition of a refrigerated tank in § 153.2.
§ 153.372 Gauges and vapor return for
cargo vapor pressures exceeding
100 kPa (approx. 14.7 psia).
When table 1 references this section,
the containment system must have a:
(a) Tank pressure gauge at the point
where cargo flow is controlled during
transfer; and
(b) Vapor return connection.
[CGD 73–96, 42 FR 49027, Sept. 26, 1977; 42 FR
57126, Nov. 1, 1977, as amended by CGD 81–078,
50 FR 21173, May 22, 1985]

CARGO GAUGING SYSTEMS
§ 153.400 General
gauges.

requirements

for

(a) Columnar gauge glasses must not
be installed on a cargo containment
system.
(b) Flat sight glasses must meet
§ 38.10–20(h) of this chapter.
§ 153.404 Standards for containment
systems having required closed
gauges.
When Table 1 requires a cargo’s containment system to have a closed
gauge, the containment system must
have the following:
(a) A permanently installed closed
gauging system.
(b) A vapor return connection.
(c) The high level alarm described in
§ 153.409.
(d) Either a closed cargo sampling
system or a cargo sampling arrangement allowing the retrieval of a sample
through an orifice not exceeding:
(1) 0.635 cm (approx. 0.25 in.) diameter
when the cargo’s vapor pressure is 28
kPa gauge (approx. 4 psig) or less; or
(2) 0.140 cm (approx. 0.055 in.) diameter when the cargo’s vapor pressure exceeds 28 kPa (approx. 4 psig).
§ 153.406 Standards for containment
systems having required restricted
gauges.
When Table 1 requires a cargo’s containment system to have a restricted

gauge, the containment system must
have:
(a) A closed gauging system; or
(b) A system that has:
(1) A restricted gauge (e.g., a sounding tube) with an orifice diameter not
exceeding 20 cm (approx. 7.8 in.);
(2) A permanently attached gauge
cover that is vapor tight when in place;
and
(3) A venting system that has either:
(i) Lock open PV valves; or
(ii) Valved bypasses around the PV
valves.
§ 153.407 Special
requirements
sounding tube gauges.

for

(a) A sounding tube installed as a restricted gauge must extend to within
one meter (approx. 39.4 in.) of the bottom of the tank.
(b) A sounding tube must not be installed on a tank whose relief valve
setting exceeds 28 kPa (approx. 4 psig)
unless it is specifically permitted by
the Commandant (G–MSO).
(c) A sounding tube must have no
perforations in the tube wall.
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 82–063b, 48 FR 4782, Feb. 3,
1983]

§ 153.408

Tank overflow control.

(a) When table 1 references this section, a cargo containment system must
have a cargo high level alarm meeting
§ 153.409 and one of the following additional systems:
(1) A second high level (cargo overflow) alarm.
(2) A system that automatically
stops cargo flow to the tank (automatic shutdown system).
(b) The high level alarm and the
cargo overflow alarm or automatic
shutdown system must:
(1) Be independent of one-another;
and
(2) Operate on loss of power.
(c) The cargo overflow alarm or the
automatic shutdown system must operate early enough to:
(1) Stop the loading operation before
the cargo tank overflows; and
(2) Avoid surge pressures that exceed
the working pressure specified in
§ 153.294(b).

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Coast Guard, DOT

§ 153.438

(d) A tank overflow must be identified with the legend ‘‘TANK OVERFLOW ALARM’’ in lettering as specified for the warning sign in § 153.955.
(e) A tank overflow alarm must be
audible and visible in that part of the
deck where the containment systems
are located and at the point where
cargo loading is controlled on the
tankship.
(f) The automatic shutdown system
or tank overflow alarm must be able to
be checked at the tank for proper operation (for example, by electrically simulating an overfill at the tank gauge
connection).
(g) In this section, ‘‘independent’’ as
applied to two systems means that one
system will operate with a failure of
any part of the other system except
high level power sources and electrical
feeder panels. Conduit need not be
independent; the control wiring for several independent systems may be carried in a single conduit.
[CGD 81–078, 50 FR 21173, May 22, 1985]

§ 153.409

High level alarms.

When Table 1 refers to this section or
requires a cargo to have a closed gauging system, the cargo’s containment
system must have a high level alarm:
(a) That gives an audible and visual
alarm before the tank fills to 97 percent of its capacity;
(b) That can be seen and heard where
cargo transfer is controlled and on the
open deck;
(c) Whose operation can be checked
prior to each loading; and
(d) That must be marked as described
in § 153.408(c)(6) with the legend ‘‘HIGH
LEVEL ALARM.’’
[CGD 78–128, 47 FR 21209, May 17, 1982; 47 FR
27293, June 24, 1982]

CARGO TEMPERATURE CONTROL SYSTEMS
§ 153.430
eral.

Heat transfer systems; gen-

Each cargo cooling system required
by this part and each cargo heating
system must:
(a) Meet the standards of Subchapters F (Marine Engineering) and J
(Electrical Engineering) of this chapter;

(b) Have valving that enables the system to be separated from all other
cooling and heating systems; and
(c) Allow manual regulation of the
system’s heat transfer rate.
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 78–128, 47 FR 21209, May 17,
1982; CGD 81–078, 50 FR 21174, May 22, 1985]

§ 153.432

Cooling systems.

(a) Each cargo cooling system must
have an equivalent standby unit that is
installed and that can be placed in operation immediately after failure of
the primary cooling system.
(b) Each tankship that has a cargo
tank with a required cooling system
must have a manual that contains:
(1) A piping diagram for the cooling
system; and
(2) Instructions for changing over to
the standby system described in paragraph (a) of this section.
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 78–128, 47 FR 21209, May 17,
1982]

§ 153.434 Heat transfer coils within a
tank.
When a cargo tank contains any
quantity of cargo, a cargo cooling or
heating system having coils within the
tank must keep the heat transfer fluid
at a pressure greater than the pressure
exerted on the heating or cooling system by the cargo.
[CGD 78–128, 47 FR 21209, May 17, 1982]

§ 153.436 Heat transfer fluids: compatibility with cargo.
A heat transfer fluid separated from
the cargo by only one wall (for example, the heat transfer fluid in a coil
within a tank) must be compatible
with the cargo under the standards prescribed for compatibility between two
cargoes in Part 150 of this chapter.
[CGD 81–078, 50 FR 21174, May 22, 1985]

§ 153.438 Cargo pressure or temperature alarms required.
(a) Each refrigerated tank must have:
(1) An alarm that operates when the
cargo’s pressure exceeds the vapor
pressure described in § 153.371(b); or
(2) An alarm that operates when the
cargo’s temperature exceeds the steady

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§ 153.440

46 CFR Ch. I (10–1–00 Edition)

state
temperature
described
in
§ 153.371(b).
(b) The alarm must give an audible
and visual signal on the bridge and at
the cargo control station.
(c) The cargo pressure or temperature alarm must be independent of
other cargo pressure or temperature
sensing arrangements.
§ 153.440

through the containment system’s restricted gauging system.
[CGD 78–128, 47 FR 21209, May 17, 1982, as
amended by CGD 81–101, 52 FR 7781, Mar. 12,
1987; CGD 81–101, 53 FR 28974, Aug. 1, 1988 and
54 FR 12629, Mar. 28, 1989]

SPECIAL REQUIREMENTS FOR
FLAMMABLE OR COMBUSTIBLE CARGOES
§ 153.460

Cargo temperature sensors.

(a) Except as prescribed in paragraph
(c) of this section, when Table 1 refers
to this section, the containment system must meet the following requirements:
(1) A heated or refrigerated cargo
tank must have a remote reading thermometer sensing the temperature of
the cargo at the bottom of the tank.
(2) A refrigerated tank must have a
remote reading second thermometer
near the top of the tank and below the
maximum liquid level allowed by
§ 153.981.
(3) Unless waived under § 153.491(a), a
cargo tank endorsed to carry a Category A, B, or C NLS cargo must have
a thermometer whose temperature
reading is no greater than the temperature of the cargo at a level above the
tank bottom at least one-eighth but no
more than one-half the height of the
tank if the cargo is—
(i) A Category A NLS or a Category B
NLS having a viscosity of at least 25
mPa.s at 20 °C;
(ii) A Category C NLS having a viscosity of at least 60 mPa.s at 20 °C; or
(iii) A Category A, B, or C NLS that
has a melting point greater than 0 °C.
(b) A readout for each remote thermometer required by this section must
be at the point where cargo transfer is
controlled.
(c) A portable thermometer may be
substituted for the equipment required
in paragraphs (a) and (b) of this section
if—
(1) Table 1 allows open gauging with
the cargo; or
(2) Table 1 allows restricted gauging
with the cargo, and the portable thermometer is designed to be used

Fire protection systems.

Each self-propelled ship and each
manned non-self-propelled ship must
meet the following:
(a) With the exception of the vent
riser, each part of a cargo containment
system exposed on the weatherdeck
must be covered by the fire protection
system listed beside the cargo in Table
1 and described in the footnotes to
Table 1.
(b) The Commandant (G–MSO) approves the substitution of a dry chemical (D) type fire protection system for
an A or B type on a case by case basis.
(c) A fire protection system required
by this part must meet part 34 of this
chapter or be specifically approved by
the Commandant (G–MSO).
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 82–063b, 48 FR 4782, Feb. 3,
1983; CGD 81–101, 52 FR 7781, Mar. 12, 1987]

§ 153.461 Electrical bonding of independent tanks.
An independent metallic cargo tank
that carries a flammable or combustible cargo must be electrically bonded
to the tankship’s hull.
§ 153.462 Static discharges from inert
gas systems.
An inert gas system on a tank that
carries a flammable or combustible
cargo must not create static arcing as
the inert gas is injected into the tank.
§ 153.463

Vent system discharges.

The discharge of a venting system
must be at least 10 m (approx. 32.8 ft)
from an ignition source if:
(a) The cargo tank is endorsed to
carry a flammable or combustible
cargo; and
(b) Table 1 requires the cargo to have
a PV venting system.

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Coast Guard, DOT
§ 153.465

§ 153.481

Flammable vapor detector.

(a) A tankship that carries a flammable cargo must have two vapor detectors that meet § 35.30–15(b) of this
chapter.
(b) At least one of the vapor detectors in paragraph (a) of this section
must be portable.
§ 153.466

Electrical equipment.

A tankship carrying a flammable or
combustible cargo under this part must
meet subchapter J of this chapter.
DESIGN AND EQUIPMENT FOR POLLUTION
CONTROL
SOURCE: Sections 153.470 through 153.491 appear at CGD 81–101, 52 FR 7781, Mar. 12, 1987,
unless otherwise noted.

§ 153.470 System for discharge of NLS
residue to the sea: Categories A, B,
C, and D.
Unless waived under § 153.491, each
ship that discharges Category A, B, or
C NLS residue, or Category D NLS residue not diluted to 1⁄10th of its original
concentration, into the sea under
§§ 153.1126 and 153.1128 must have an
NLS residue discharge system meeting
the following:
(a) Minimum diameter of an NLS residue discharge outlet. The outlet of each
NLS residue discharge system must
have a diameter at least as great as
that given by the following formula:

D=

(Q d )(cosine φ)
5L

where:
D=Minimum diameter of the discharge outlet in meters.
Qd=Maximum rate in cubic meters per hour
at which the ship operator wishes to discharge slops (note: Qd affects the discharge rate allowed under § 153.1126(b)(2)).
L=Distance from the forward perpendicular
to the discharge outlet in meters.
φ=The acute angle between a perpendicular
to the shell plating at the discharge location and the direction of the average velocity of the discharged liquid.

(b) Location of an NLS residue discharge outlet. Each NLS residue discharge outlet must be located—
(1) At the turn of the bilge beneath
the cargo area; and

(2) Where the discharge from the outlet is not drawn into the ship’s seawater intakes.
(c) Location of dual NLS residue discharge outlets. If the value of 6.45 for K
is used in § 153.1126(b)(2), the NLS residue discharge system must have two
outlets located on opposite sides of the
ship.
[CGD 81–101, 52 FR 7781, Mar. 12, 1987, as
amended by CGD 81–101, 53 FR 28974, Aug. 1,
1988 and 54 FR 12629, Mar. 28, 1989; CGD 95–
028, 62 FR 51209, Sept. 30, 1997]

§ 153.480 Stripping quantity for Category B and C NLS tanks on ships
built after June 30, 1986: Categories
B and C.
Unless waived under § 153.491, Category B and C NLS cargo tanks on each
ship built after June 30, 1986 must have
stripping quantities determined under
§ 153.1604 that are less than—
(a) 0.15 m3 if Category B; and
(b) 0.35 m3 if Category C.
§ 153.481 Stripping quantities and interim standards for Category B NLS
tanks on ships built before July 1,
1986: Category B.
Unless waived under § 153.483 or
§ 153.491, each Category B NLS cargo
tank on ships built before July 1, 1986
must meet the following:
(a) Unless the tank meets the interim
standard provided by paragraph (b) of
this section and is prewashed in accordance with § 153.1118, the tank must
have a stripping quantity determined
under § 153.1604 that is less than 0.35m 3.
(b) Before October 3, 1994, the tank
may have a total NLS residue determined under § 153.1608 that is less than
1.0 m3 or 1⁄3000th of the tank’s capacity
and an NLS residue discharge system
meeting the following:
(1) The system must be capable of
discharging at a rate equal to or less
than Q in the following formula:
Q=K U1.4 L1.6×10¥5 m3/hr
where:
K=4.3, except K=6.45 if the discharge is equally distributed between two NLS residue
discharge outlets on opposite sides of the
ship (see §§ 153.470(c) and 153.1126(b)).
L=ship’s length in meters.
U=for a ship that is self-propelled, the minimum speed in knots specified in the approved Procedures and Arrangements

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§ 153.482

46 CFR Ch. I (10–1–00 Edition)

Manual for discharging Category B NLS
residue, but at least 7;
U=for a ship that is not self-propelled, the
minimum speed in knots specified in the
approved Procedures and Arrangements
Manual for discharging Category B NLS
residue, but at least 4.

(2) The system must have equipment
capable of automatically recording—
(i) The time of day that discharge of
NLS residue through the residue discharge system starts and ends; and
(ii) The dates on which discharge begins and ends unless the equipment allows a person to enter these dates on
the record manually.
(3) Each system that has the capacity
to exceed Q calculated in paragraph
(b)(1) of this section must have equipment that—
(i) Records the NLS residue flow
through the system; and
(ii) Is sufficiently accurate that its
recorded values averaged over any 30
second period differ no more than 15%
from the actual flow averaged over the
same 30 second period.
(4) Each system that has the capacity
to exceed Q calculated under paragraph
(b)(1) of this section and does not automatically control the flow rate must
have—
(i) Manual controls that enable the
flow to be adjusted to the value of Q
calculated in paragraph (b)(1) of this
section and that must be moved
through at least 25% of their total
range of movement for the discharge
rate to change from 0.5Q to 1.5Q; and
(ii) A flow rate meter located where
the flow is manually controlled.
[CGD 81–101, 52 FR 7781, Mar. 12, 1987, as
amended by CGD 81–101, 53 FR 28974, Aug. 1,
1988 and 54 FR 12629, Mar. 28, 1989]

§ 153.482 Stripping quantities and interim standards for Category C NLS
tanks on ships built before July 1,
1986: Category C.
Unless waived under § 153.483 or
§ 153.491, each Category C NLS cargo
tank on ships built before July 1, 1986
must meet the following:
(a) Unless the tank meets the interim
standard provided by paragraph (b) of
this section, the tank must have a
stripping quantity determined under
153.1604 that is less than 0.95 m3.
(b) Before October 3, 1994, the tank
may have a total NLS residue deter-

mined under § 153.1608 that is less than
3.0 m3 or 1/1000th of the tank’s capacity.
§ 153.483 Restricted voyage waiver for
Category B and C NLS tanks on
ships built before July 1, 1986: Category B and C.
At its discretion the Coast Guard
waives §§ 153.481 and 153.482 under this
section and allows a ship to carry Category B and C NLS cargoes between
ports or terminals in one or more countries signatory to MARPOL 73/78 if the
ship’s owner requests a waiver following the procedures in § 153.10 and includes—
(a) A written pledge to—
(1) Limit the loading and discharge of
Category B and C NLS cargoes in a foreign port to those ports and terminals
in countries signatory to MARPOL 73/
78 and listed in accordance with paragraph (b) of this section; and
(2) Prewash the cargo tank as required under § 153.1118 after each Category B or C NLS is unloaded unless
the prewash is allowed to be omitted
under § 153.1114;
(b) A list of—
(1) All foreign ports or terminals at
which the ship is expected to load or
discharge Category B or C NLS cargo,
and
(2) All foreign ports or terminals at
which the ship is expected to discharge
Category B or C NLS residue from the
tank;
(c) An estimate of the quantity of
NLS residue to be discharged to each
foreign port or terminal listed under
paragraph (b)(2) of this section;
(d) Written statements from the owners of adequate reception facilities in
the ports and terminals listed in accordance with paragraph (b)(2) of this
section who have agreed to take NLS
residue from the ship, showing the
amount of NLS residue each agrees to
take; and
(e) A written attestation from the
person in charge of each port or terminal listed in accordance with paragraph (b)(1) of this section that the administration has determined the port
or terminal to have adequate reception
facilities for the NLS residue.
NOTE TO § 153.483: Certificates of Inspection
and any IMO Certificates issued to ships on

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Coast Guard, DOT

§ 153.488

restricted voyage waivers indicate that while
the ship carries an NLS cargo or NLS residue, it is limited to voyages between the
ports or terminals listed on the certificate.
[CGD 81–101, 52 FR 7781, Mar. 12, 1987, as
amended by CGD 81–101, 53 FR 28975, Aug. 1,
1988 and 54 FR 12629, Mar. 28, 1989]

§ 153.484

Prewash equipment.

Unless the ship operator shows that
the prewash equipment specified in this
section will be available at discharge
or prewash facilities or the equipment
is waived under § 153.491, to have its
Certificate of Inspection or Certificate
of Compliance endorsed to carry a Category A NLS or a Category B or C NLS
requiring viscosity or melting point information under § 153.908 (a) and (b), a
ship must have the following:
(a) For the tanks that carry the NLS,
a tank washing system capable of
washing all interior tank surfaces except those shielded from the washing
system spray by ship’s structure, and
consisting of a wash water supply system and—
(1) A fixed tank washing machine in
each tank; or
(2) A portable tank washing machine
and, if required by the Coast Guard,
equipment to move it during washing
and when storing.
(b) Piping, valving, and crossovers
needed to arrange the cargo piping so
that the wash water passes through the
cargo pump and cargo piping during
tank washing or discharge of tank
wash water.
(c) If the approved Procedures and
Arrangements Manual specifies the hot
water prewash required under 153.1108,
a means of supplying water to the tank
washing machine under paragraph (a)
of this section at—
(1) A temperature of at least 60 °C
(140 °F) when it leaves the washing machine; and
(2) The flow rate needed for the washing machine jets to meet paragraph (a)
of this section.
§ 153.486 Design and equipment for removing NLS residue by ventilation:
Categories A, B, C, and D.
(a) If NLS residue is to be removed
from a cargo tank by ventilation, in
addition to the equipment required

under paragraph (b) of this section the
ship must have—
(1) Openings in the tank deck near
the sump or suction point;
(2) If the openings required by paragraph (a)(1) of this section are insufficient, an access opening for visually
determining whether liquid remains in
the sump area of the cargo tank after
ventilation or some other means for
making this determination; and
(3) An approved Procedures and Arrangements Manual with instructions
that meet § 153.490(b)(3).
(b) Unless the ship operator shows
that the ventilation equipment specified in this paragraph will be available
from shore when needed, if NLS residue
is to be removed from a cargo tank by
ventilation, in addition to the equipment required under paragraph (a) of
this section the ship must have—
(1) Portable forced air ventilating
equipment fitting the ventilation openings required in paragraph (a) of this
section and able to ventilate the extremities of the tank to the extent prescribed in Appendix C of the IMO
Standards for Procedures and Arrangements for the Discharge of Noxious Liquid
Substances, Resolution MEPC 18(22),
1985; and
(2) A connector that allows a fan or
air supply to be connected to the hose
connections for the tank at the manifold.
NOTE: The Clean Air Act (42 U.S.C. 7401 et
seq.) allows states to regulate emissions from
tank ventilation. There may be other regulations, both local and Federal, that affect the
use of tank ventilation for safety or environmental purposes.

§ 153.488 Design and equipment for
tanks carrying high melting point
NLSs: Category B.
Unless waived under § 153.491, for a
ship to have its Certificate of Inspection or Certificate of Compliance endorsed allowing a tank to carry a Category B NLS with a melting point of 15
°C or more, the cargo tank must have—
(a) An arrangement enabling the
cargo to be heated before cargo transfer, using heat supplied by the ship or
by another source; and
(b) Sides and bottom separate from
the ship’s side or bottom shell plating.

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§ 153.490

46 CFR Ch. I (10–1–00 Edition)

§ 153.490 Cargo Record Book and Approved Procedures and Arrangements Manual: Categories A, B, C,
and D.
(a) Unless waived under § 153.491, to
have a Certificate of Inspection or Certificate of Compliance endorsed to
carry NLS cargo, a ship must have—
(1) If U.S., a Cargo Record Book published by the Coast Guard (OMB App.
No. 2115–0089), or, if foreign, a Cargo
Record Book having the same entries
and format as Appendix 4 of Annex II;
and
(2) A Procedures and Arrangements
Manual meeting paragraph (b) of this
section and approved by—
(i) The Coast Guard, if the ship is a
United States ship or one whose Administration is not signatory to
MARPOL 73/78; or
(ii) The Administration, if the ship is
one whose Administration is signatory
to MARPOL 73/78.
(b) Each Procedures and Arrangements Manual under paragraph (a)(2) of
this section must include the following:
(1) The standard format and content
prescribed in Chapter 2 and Appendix D
of the IMO Standards for Procedures and
Arrangements for the Discharge of Noxious Liquid Substances, Resolution
MEPC 18(22), 1985, or, for ships for
which the only NLS carried is a Category D NLS and ships having a waiver
under § 153.483 or § 153.491, the format
and content prescribed by the Commandant (G–MSO).
(2) If the ship has a tank that carries
a cargo under a waiver issued under
§ 153.483, procedures ensuring that—
(i) Category B and C NLSs are discharged from the tank only in the
ports or terminals listed in accordance
with § 153.483(b); and
(ii) The tank is prewashed after discharging each Category B or C NLS unless § 153.1114 allows the prewash to be
omitted.
(3) If ventilation is used to clean a
tank under § 153.1102(b)(2), ventilation
procedures that meet those in Appendix C of the IMO Standards for Procedures and Arrangements for the Discharge
of Noxious Liquid Substances, Resolution
MEPC 18(22), 1985.

(4) If tank cleaning agents are used,
quantities to use and instructions for
using the cleaning agents.
(5) If the tank has the discharge recording
equipment
required
in
§ 153.481(b), procedures to ensure that
no NLS residue is discharged from the
tank when the recording equipment is
incapacitated unless the concentration
and total quantity limits for the NLS
in Annex II are not exceeded.
[CGD 81–101, 52 FR 7781, Mar. 12, 1987, as
amended by CGD 81–101, 53 FR 28975, Aug. 1,
1988 and 54 FR 12629, Mar. 28, 1989]

§ 153.491 Waiver of certain equipment
for dedicated cargo tanks.
(a)
The
Coast
Guard
waives
§§ 153.440(a)(3), 153.480, 153.481, 153.482,
and 153.488 and endorses a ship’s Certificate of Inspection or Certificate of
Compliance allowing a cargo tank to
carry a single, specific NLS cargo and
no other cargo if the ship’s owner—
(1) Requests a waiver following the
procedures in § 153.10; and
(2) Pledges in writing that while any
waiver is in effect the cargo tank will—
(i) Carry only the NLS cargo listed
on the Certificate of Inspection or Certificate of Compliance;
(ii) Carry no cargo other than the
NLS; and
(iii) Not be washed or ballasted unless the wash water or ballast water is
discharged to a reception facility.
(b) The Coast Guard waives §§ 153.470
and 153.490(a)(2) if—
(1) The ship’s owner requests a waiver following the procedures in § 153.10;
(2) The Coast Guard has issued a
waiver to each of the ship’s NLS cargo
tanks under paragraph (a) of this section; and
(3) The ship’s owner adds to the ship’s
operational manual any provisions for
preventing NLS discharge specified by
the Commandant (G–MSO) as a condition for issuing the waiver.
[CGD 81–101, 52 FR 7781, Mar. 12, 1987, as
amended by CGD 81–101, 53 FR 28975, Aug. 1,
1988 and 54 FR 12629, Mar. 28, 1989]

SPECIAL REQUIREMENTS
§ 153.500 Inert gas systems.
When Table 1 refers to this section, a
cargo containment system must have a
permanent inert gas system that:

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Coast Guard, DOT

§ 153.526

(a) Maintains the vapor space of the
containment system in an inert state
by filling the vapor space with a gas
that is neither reactive with the cargo
nor flammable;
(b) Has a pressure control system
that:
(1) Prevents the inert gas system
from raising the cargo tank pressure to
more than the relief valve setting; and
(2) Maintains at least a 3.5 kPa gauge
(approx. 0.5 psig) pressure within the
containment system at all times, including cargo discharge;
(c) Has storage for enough inerting
gas to replace that normally lost while
the tank’s atmosphere is maintained in
an inert condition (e.g. through tank
breathing and relief valve leakage), but
in no case an amount less than 5 percent of the tank’s capacity when measured with the gas at ¥18 °C (approx. 0
°F) and a pressure equal to the cargo
tank’s relief valve setting; and
(d) Has connections for any supplemental gas supply necessary to maintain the inert gas pressure described in
paragraph (b) of this section during
cargo discharge.
§ 153.501
gas.

Requirement for dry inert

When Table 1 refers to this section,
an inert gas system for the containment system must supply inert gas
containing no more than 100 ppm
water.
§ 153.515 Special requirements for extremely flammable cargoes.
When Table 1 refers to this section:
(a) An enclosed space containing a
cargo tank must have an inerting system that meets the requirements in
§ 153.500 applying to the inert gas system of a containment system;
(b) Cargo discharge pumps must be of
a type that does not subject the shaft
gland to the cargo under pressure or
that is submerged; and
(c) The cargo tank’s relief valve setting must be no less than 21 kPa gauge
(approx. 3 psig).
§ 153.520 Special requirements for carbon disulfide.
A containment system carrying carbon disulfide must meet the following:

(a) Each cargo pump must be of the
intank type and encased within a cylindrical well that extends from the top
of the tank to a point no more than 10
cm (approx. 4 in.) above the bottom of
the tank.
(b) [Reserved]
(c) The cargo piping and venting systems must be completely independent
of those for other cargo.
(d) Pressure relief valves must be
made of type 304 or 316 stainless steel.
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 78–128, 47 FR 21209, May 17,
1982]

§ 153.525 Special requirements for unusually toxic cargoes.
When Table 1 refers to this section a
containment system must meet the following:
(a) Cargo piping and venting systems
must be designed so that they can be
separated from any containment system endorsed for a cargo not covered
by this section.
(b) A cargo tank’s relief valve setting
must be not less than 21 kPa gauge
(approx. 3 psig).
(c) All cargo pumps and valves located below the weatherdeck must be
operable from the weatherdeck.
(d) A heat transfer system for the
cargo must:
(1) Be independent of other ship service systems, except for other cargo
heat transfer systems, and not enter
the engine room;
(2) Be totally external to the cargo
containment system; or
(3) Be approved by the Commandant
(G–MSO) for use with toxic cargoes.
(e) The cargo must be separated from
any bunkers by at least two bulkheads.
(f) A cargo containment system must
have a vapor return connection.
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 78–128, 47 FR 21209, May 17,
1982; CGD 82–063b, 48 FR 4782, Feb. 3, 1983]

§ 153.526

Toxic vapor detectors.

(a) When Table 1 refers to this section, a tankship must have two toxic
vapor detectors, at least one of which
must be portable, each able to measure
vapor concentrations in the range of
the time weighted average (TWA) for
the cargo. The portable detector may

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§ 153.527

46 CFR Ch. I (10–1–00 Edition)

be a direct reading detector tube instrument. These vapor detectors may
be combined with those required by
§ 153.465.
(b) When the toxic vapor detectors
required by paragraph (a) of this section are not available and the cargo
referenced to this section is transferred
through a cargo pumproom, the tankship must meet § 153.336(b).
[CGD 78–128, 47 FR 21210, May 17, 1982]

§ 153.527

Toxic vapor protection.

When Table 1 refers to this section, a
tankship must have on board for each
crew member:
(a) An emergency escape breathing
apparatus (EEBA) approved by the
Mining Safety and Health Administration (formerly the Mining Enforcement
and Safety Administration) and the
National Institute for Occupational
Safety and Health, or the tankship’s
flag administration.
(b) Where the emergency escape
breathing apparatus does not protect
the eyes from vapors, a set of goggles
that either:
(1) Meet the specifications of ANSI
Practice for Occupational and Educational Eye and Face Protection, Z–
87.1(1979); or
(2) Are approved by the tankship’s
flag administration.
[CGD 78–128, 47 FR 21210, May 17, 1982]

§ 153.530 Special requirements for alkylene oxides.
When Table 1 refers to this section, a
containment system must meet the following:
(a) Except as provided in paragraphs
(b) and (c) of this section, a cargo containment system must be made of:
(1) Stainless steel other than types
416 and 442; and
(2) Steel.
(b) Except as provided in paragraph
(c) of this section, gaskets must be
composites of spirally wound stainless
steel and Teflon or similar flourinated
polymer.
(c) The Commandant (G–MSO) approves a cargo containment system
using materials other than those described in this section for alkylene oxides on a case by case basis if:

(1) The person wishing to have the
containment system approved completes any tests prescribed by the Commandant (G–MSO); and
(2) The Commandant (G–MSO) approves the results of the tests and the
material for use with alkylene oxides.
(d) The following materials are generally found unsatisfactory for gaskets,
packing, insulation, and similar uses in
alkylene oxide containment systems
and would require extensive testing as
described in paragraph (c) of this section before being approved:
(1) Neoprene or natural rubber if it
might be in contact with the alkylene
oxide.
(2) Asbestos or asbestos mixed with
other materials such as with many
common insulations, packing materials, and gasket materials.
(3) Materials containing oxides of
magnesium, such as mineral wools.
(e) The tank’s relief valve setting
must not be less than 21 kPa gauge
(approx. 3 psig).
(f) If the containment system is
equipped with a cooling system, the
cooling system must:
(1) Not compress the cargo; and
(2) Regulate the cargo temperature
automatically and allow manual regulation.
(g) The cargo piping system must:
(1) Comply with Part 38 of this chapter;
(2) Be completely separate from all
other systems;
(3) Be assembled from valves, fittings, and accessories having a pressure rating of not less than 1030 kPa
gauge (approx. 150 psig) (American National Standards Institute); and
(4) Have no threaded joints.
(h) The cargo containment system
vapor space and each space listed in
paragraphs (k) and (l) of this section
must have continuous monitoring of
oxygen concentration or have an arrangement to enable sampling with a
portable oxygen analyzer.
(i) Valve disks or disk faces, seats,
and other wearing valve parts must be
made of stainless steel containing no
less than 11 percent chromium.
(j) The venting system must be independent of other containment or tankship systems.

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Coast Guard, DOT

§ 153.556

(k) When a cargo tank is in an enclosed space, the space must have:
(1) An inert gas system meeting the
requirements that apply to the inert
gas system of a containment system in
§ 153.500, or
(2) A forced ventilation system meeting the requirements that apply to a
cargo handling space ventilation system in § 153.312.
(l) Cofferdams, cargo tanks, double
bottom spaces, void spaces and other
enclosed spaces adjacent to an integral
cargo tank must have an inert gas system meeting the requirements that
apply to the inert gas system of a containment system in § 153.500.
(m) An intank pump or inert gas displacement must be used to discharge
cargo.
(n) The cargo discharge piping system must have a remotely actuated
quick closing shutoff valve that meets
§ 153.284 at the cargo transfer hose connection.
(o) Cargo hose must:
(1) Have the specific approval of the
Commandant (G–MSO) for use in alkylene oxide transfer; and
(2) Be marked ‘‘For Alkylene Oxide
Transfer Only’’.
(p) All exposed parts of the cargo
containment system above or on the
deck, such as tank domes, cargo piping,
and loading manifolds, must be covered
by a water spray system that:
(1) Operates automatically in a fire
involving the cargo containment system;
(2) Has at least two remote manual
actuators, one in each emergency shutdown station required by § 153.296; and
(3) Covers the area of application
with a uniform spray of
0.175 l/m 2 sec (0.0043 gal/ft 2 sec).
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 78–128, 47 FR 21210, May 17,
1982; CGD 82–063b, 48 FR 4782, Feb. 3, 1983;
CGD 82–063b, 48 FR 39629, Sept. 1, 1983; CGD
81–078, 50 FR 21174, May 22, 1985]

§ 153.545 Special requirements for liquid sulfur.
(a) A containment system carrying
liquid sulfur must have:
(1) A cargo tank ventilation system
that:

(i) Maintains the H2S vapor concentration below 1.85 percent by volume; and
(ii) Prevents sulfur buildup within
itself; and
(2) An alarm system designed to operate when the ventilation system blower
fails.
(b) The void spaces around a cargo
tank that carries liquid sulfur must be
oil tight.
(c) A cargo tank that carries liquid
sulfur and the void spaces surrounding
the tank must have connections for
sampling vapor.
§ 153.554 Special
acids.

requirements

for

When Table 1 refers to this section:
(a) Each containment system loading
and discharge connection must have a
spray shield;
(b) Each cargo containment system
must be separated from bunkers by
double walls, such as a cofferdam and
piping tunnels; and
(c) Each vessel must have on board a
means to determine whether cargo has
leaked into the spaces adjacent to a
cargo containment system.
§ 153.555 Special requirements for inorganic acids.
When Table 1 refers to this section, a
tankship’s shell plating must not be a
part of the cargo tank.
[CGD 78–128, 47 FR 21210, May 17, 1982]

§ 153.556 Special requirements for sulfuric acid and oleum.
(a) Except as prescribed in paragraphs (b) and (c) of this section, containment systems carrying sulfuric
acid, oleum, or contaminated sulfuric
acid are approved by the Commandant
(G–MSO) on a case by case basis.
(b) A containment system carrying
sulfuric acid may be:
(1) Made of unlined steel if the cargo
composition is between 70 and 80 or between 90 and 100 percent acid by
weight;
(2) Lined with lead if the cargo composition does not exceed 96 percent acid
by weight; or
(3) Lined with natural rubber or neoprene if the cargo composition does not
exceed 51 percent acid by weight.

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§ 153.557

46 CFR Ch. I (10–1–00 Edition)

(c) A containment system for oleum
may be of unlined steel if the concentration of free sulfur trioxide in the
oleum exceeds 20 percent by weight.
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 82–063b, 48 FR 4782, Feb. 3,
1983]

§ 153.557 Special requirements for hydrochloric acid.

currence
of
a
self-sustaining
exothermic decomposition reaction.
(b) Octyl nitrates may not be carried
in a deck tank unless the tank has a
combination of insulation and a water
deluge system sufficient to maintain
the tank’s cargo temperature below 100
°C (212 °F) and the cargo temperature
rise at below 1.5 °C(2.7 °F)/hour, for a
fire of 650 °C (1200 °F).

(a) A containment system that carries hydrochloric acid must be lined
with:
(1) Natural rubber;
(2) Neoprene; or
(3) A material approved for hydrochloric acid tanks by the Commandant
(G–MSO).
(b) Containment systems for contaminated hydrochloric acid are approved by the Commandant (G–MSO)
on a case by case basis.

[CGD 88–100, 54 FR 40042, Sept. 29, 1989, as
amended by CGD 92–100, 59 FR 17028, Apr. 11,
1994; CGD 94–900, 59 FR 45139, Aug. 31, 1994]

[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 82–063b, 48 FR 4781, Feb. 3,
1983]

[CGD 94–900, 59 FR 45139, Aug. 31, 1994]

§ 153.558 Special
requirements
phosphoric acid.

When Table 1 refers to this section,
the air inlet to the pressure-vacuum
valve for the cargo tank must be located at least 2m (approx. 6.6 ft) above
the weatherdeck.

for

A phosphoric acid containment system must be:
(a) Lined with natural rubber or neoprene;
(b) Lined with a material approved
for phosphoric acid tanks by the Commandant (G–MSO); or
(c) Made of a stainless steel that resists corrosion by phosphoric acid.
NOTE: ‘‘Phosphoric acid’’, as defined in
§ 153.2, includes phosphoric acid, superphosphoric acid, and aqueous solutions of phosphoric acid.

§153.565 Special requirement for temperature sensors.
If a cargo listed in table 1 of this part
refers to this section, temperature sensors must be used to monitor the cargo
pump temperature to detect overheating due to pump failures, when
carrying that cargo.

§153.602 Special requirements for cargoes reactive with water.

[CGD 78–128, 47 FR 21210, May 17, 1982]

TESTING AND INSPECTION
§ 153.806

Loading information.

Each tankship must have a manual
containing information that enables
the master to load and ballast the
tankship while keeping structural
stresses within design limits.

[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 82–063b, 48 FR 4782, Feb. 3,
1983; CGD 88–100, 54 FR 40042, Sept. 29, 1989]

[CGD 79–023, 48 FR 51009, Nov. 4, 1983]

§ 153.559 Special requirements for nitric acid (less than 70 percent).

Before a vessel receives either an initial or a reissued Certificate of Compliance endorsed to carry a cargo from
Table 1 of this part, the vessel must
call at a U.S. port for an examination
during which the Officer in Charge, Marine Inspection, determines whether or
not the vessel meets the requirements
of this chapter.

A containment system that carries
nitric acid (less than 70 percent) must
be of stainless steel that resists corrosion by nitric acid.
§ 153.560 Special
requirements
Alkyl (C7–C9) nitrates.

for

(a) The carriage temperature of octyl
nitrates must be maintained below 100
°C (212 °F) in order to prevent the oc-

§ 153.808 Examination required for a
Certificate of Compliance.

[CGD 81–052, 50 FR 8733, Mar. 5, 1985, as
amended by CGD 95–027, 61 FR 26009, May 23,
1996]

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Coast Guard, DOT

§ 153.900

Subpart C—Operations

§ 153.809 Procedures for having the
Coast Guard examine a vessel for a
Certificate of Compliance.
The owner of a foreign flag vessel
wishing to have the Coast Guard conduct a Certificate of Compliance examination, as required by § 153.808, must
proceed as follows:
(a) Notify the Officer in Charge, Marine Inspection of the port where the
vessel is to be inspected at least 7 days
before the vessel arrives and arrange
the exact time and other details of the
examination. This notification is in addition to any other pre-arrival notice
to the Coast Guard required by other
regulations, but may be concurrent
with the endorsement application in
§ 153.9, and must include—
(1) The name of the vessel’s first U.S.
port of call;
(2) The date that the vessel is scheduled to arrive;
(3) The name and telephone number
of the owner’s local agent; and
(4) The names of all cargoes listed in
table 1 of this part that are on board
the vessel.
(b) Before the examination required
by § 153.808 is begun, make certain that
the following plans are on board the
vessel and available to the Marine Inspector. These plans include—
(1) A general arrangement (including
the location of fire fighting, safety, and
lifesaving gear);
(2) A capacity plan;
(3) A schematic diagram of cargo piping on deck and in tanks (including the
location of all valves and pumps); and
(4) A schematic diagram of cargo
tank vent piping (including the location of relief valves and flame screens).
[CGD 95–027, 61 FR 26009, May 23, 1996]

§ 153.812 Inspection for Certificate of
Inspection.
The rules governing the issuance of
Certificates of Inspection are contained
in part 31 of this chapter.

DOCUMENTS AND CARGO INFORMATION
§ 153.900 Certificates and authorization to carry a bulk liquid hazardous material.
(a) Except as allowed in 33 CFR
151.33(a), no ship may carry a cargo of
bulk liquid hazardous material or an
NLS residue if the bulk liquid hazardous material or NLS is listed in
Table 1 or carried under a written permission under paragraph (d) of this section unless the ship meets the following:
(1) The cargo must be carried in a
cargo tank.
(2) If a United States ship, the ship
must have a Subchapter D or I Certificate of Inspection that is endorsed to
allow the cargo tank to carry the
cargo.
(3) If a foreign ship, the ship must
have a Certificate of Compliance that
is endorsed to allow the cargo tank to
carry the cargo.
(4) The ship must have an IMO Certificate of Fitness issued under § 153.12
that is endorsed to allow the cargo
tank to carry the cargo if it is—
(i) A United States self-propelled ship
in foreign waters; or
(ii) A United States non-self-propelled ship in the waters of another Administration signatory to MARPOL 73/
78 and the cargo is a Category A, B, or
C NLS.
(b) [Reserved]
(c) No ship may carry any bulk liquid
cargo not listed in § 30.25–1 of this chapter, Table 151.05 of Part 151 of this
chapter, Table 1 or Table 2 of this part,
Table 4 of Part 154 of this chapter, 33
CFR 151.47, or 33 CFR 151.49 unless the
cargo name is endorsed on the Certificate of Inspection or contained in a letter issued under paragraph (d) of this
section.
(d) The Coast Guard at its discretion
endorses the Certificate of Inspection
with the name of or issues a letter allowing the carriage of an unlisted
cargo described under paragraph (c) of
this section if—
(1) The shipowner—
(i) Requests the Coast Guard to add
the cargo; and

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§ 153.901

46 CFR Ch. I (10–1–00 Edition)

(ii) Supplies any information the
Coast Guard needs to develop carriage
requirements for the bulk liquid cargo;
and
(2) The ship—
(i) Has a Certificate of Inspection,
Certificate of Compliance, or IOPP Certificate as specified in this part;
(ii) Meets the design and equipment
requirements of this part specified by
the Coast Guard; and
(iii) Meets any additional requirements made by the Coast Guard.
[CGD 81–101, 52 FR 7783, Mar. 12, 1987, as
amended by CGD 81–101, 53 FR 28975, Aug. 1,
1988 and 54 FR 12629, Mar. 28, 1989]

§ 153.901 Documents: Posting,
ability, and alteration.

avail-

(a) No person may operate a United
States ship unless the endorsed Certificate of Inspection is readily available
on the ship.
(b) No person may operate a foreign
ship unless the endorsed Certificate of
Compliance or Certificate of Inspection
is readily available on the ship.
(c) No person may operate a ship
under an alternative or waiver granted
under this part unless the document
granting the alternative or waiver is
attached to the ship’s Certificate of Inspection or Certificate of Compliance.
(d) Except as allowed in paragraph (e)
of this section, the Coast Guard does
not accept the following if altered:
(1) Certificates of Inspection.
(2) Certificates of Compliance.
(3) Certificates of Fitness, unless the
alteration is by the issuing authority.
(4) Approved Procedures and Arrangements Manuals, unless the alteration is approved by the issuing authority.
(5) NLS Certificates.
(e) A person wishing to change a Procedures and Arrangements Manual approved by the Coast Guard must submit a copy to the Coast Guard following the procedures for requesting an
endorsed Certificate of Inspection in
§ 153.8.

(b) The endorsement of a Certificate
of Compliance under this part is invalid if the vessel does not have a valid
IMO Certificate of Fitness.
(c) The endorsement on a Certificate
of Compliance invalidated under paragraph (b) of this section, becomes valid
again once the ship has the IMO Certificate of Fitness revalidated or reissued.
NOTE: See § 153.809 for procedures for having a Certificate of Compliance reissued.
[CGD 81–101, 52 FR 7784, Mar. 12, 1987; CGD
95–072, 60 FR 50465, Sept. 29, 1995; 60 FR 54106,
Oct. 19, 1995; CGD 95–027, 61 FR 26009, May 23,
1996]

§ 153.903 Operating a United States
ship in special areas: Categories A,
B, and C.
No person may operate a United
States ship that carries an NLS or NLS
residue in a special area unless—
(a) The ship’s Certificate of Inspection is endorsed in accordance with
§ 153.30; and
(b) The ship meets the operating requirements applying to special areas in
Regulations 5, 5A, 8 and the Standards
for Procedures and Arrangements of
Annex II.
[CGD 81–101, 52 FR 7784, Mar. 12, 1987]

§ 153.904 Limitations in the endorsement.
No person may operate a tankship
unless that person complies with all
limitations in the endorsement on the
tankship’s Certificate of Inspection or
Certificate of Compliance.
[CGD 81–052, 50 FR 8734, Mar. 5, 1985]

§ 153.905 Regulations required to be
on board.
No person may operate a tankship
unless the most recent editions of this
part, and parts 35 and 150 of this chapter are on board.
[CGD 78–128, 47 FR 21210, May 17, 1982]

§ 153.907

[CGD 81–101, 52 FR 7783, Mar. 12, 1987]

§ 153.902 Expiration and invalidation
of the Certificate of Compliance.
(a) The Certificate of Compliance
shows its expiration date.

Cargo information.

(a) The master shall ensure that the
following information for each cargo
carried under this part is readily available to those on the tankship engaged
in cargo operations:

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Coast Guard, DOT

§ 153.908

(1) The name of the cargo as listed in
table 1.
(2) A description of the cargo’s appearance and color.
(3) Hazards in handling the cargo.
(4) Any special handling procedures
for the cargo, such as inerting.
(5) Procedures to follow if the cargo
spills or leaks.
(6) Procedures for treating a person
exposed to the cargo.
(7) A list of fire fighting procedures
and extinguishing agents effective with
cargo fires.
(8) Shipper’s name.
(9) Loading point.
(10) Approximate quantity of cargo.
(11) Tank in which the cargo is located.
(12) The name of an agent in the
United States authorized to accept
service of legal process for the vessel.
(b) The master shall make sure that
the following information for cargoes
other than those carried under this
part is readily available on the tankship:
(1) The name of the cargo as listed in
Table 4 of Part 154 of this chapter or
§ 30.25–1 of this chapter if the cargo is
listed in one of these two tables.
(2) The name of the cargo prescribed
in the letter authorizing carriage of
the cargo under § 153.900(d) if the cargo
is a hazardous or flammable cargo authorized for carriage under that section.
(3) The shipper’s name for the cargo
and the name of the shipper if the
cargo is neither a hazardous nor flammable cargo.
[CGD 81–078, 50 FR 21174, May 22, 1985; as
amended by CGD 88–100, 54 FR 40042, Sept. 29,
1989]

§ 153.908 Cargo viscosity and melting
point information; measuring cargo
temperature during discharge: Categories A, B, and C.
(a) The person in charge of the ship
may not accept a shipment of a Category A, B, or C NLS cargo having a
reference to this paragraph in the
‘‘Special Requirements’’ column of
Table 1 unless the person has, from the
cargo’s manufacturer or the person
listed as the shipper on the bill of lad-

ing, a written statement of the following:
(1) For Category A or B NLS, the cargo’s viscosity at 20 °C in mPa.s and, if
the cargo’s viscosity exceeds 25 mPa.s
at 20 °C, the temperature at which the
viscosity is 25 mPa.s.
(2) For Category C NLS, the cargo’s
viscosity at 20 °C in mPa.s and, if the
cargo’s viscosity exceeds 60 mPa.s at 20
°C, the temperature at which the viscosity is 60 mPa.s. If the cargo’s viscosity varies from shipment to shipment, the maximum viscosity and
maximum temperature values may be
supplied.
(b) The person in charge of the ship
may not accept a shipment of a Category A, B, or C cargo having a reference to this paragraph in the ‘‘Special Requirements’’ column of Table 1
unless the person has a written statement of the cargo’s melting point in °C
from the cargo’s manufacturer or the
person listed as the shipper on the bill
of lading. If the cargo’s melting point
varies from shipment to shipment, the
highest melting point may be supplied.
(c) The person in charge of the ship
shall ensure that the cargo temperature is read and recorded in the Cargo
Record Book following the procedures
in paragraph (d) of this section when a
cargo having a reference to paragraph
(a) or (b) of this section in the ‘‘Special
Requirements’’ column of Table 1 is
unloaded.
(d) The cargo temperature measured
in paragraph (c) of this section must be
made using the following procedure:
(1) Each reading must be made with
the sensor or thermometer required by
§ 153.440(a)(3) or (c). If a portable thermometer is used, it must be located as
prescribed for the temperature sensor
in § 153.440(a)(3).
(2) A total of 2 readings must be
made, the first reading to be made no
more than 30 minutes after cargo
transfer begins and the second reading
no more than 30 minutes before the
main cargo pump is shut down.
(3) The cargo’s temperature is the average of the 2 readings made under
paragraph (d)(2) of this section.
[CGD 81–101, 52 FR 7784, Mar. 12, 1987]

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§ 153.909

46 CFR Ch. I (10–1–00 Edition)

§ 153.909 Completing the Cargo Record
Book and record retention: Categories A, B, C, and D.
(a) The person in charge of a ship
shall ensure that the Cargo Record
Book required under § 153.490 is completed immediately after any of the
following occurs:
(1) An NLS cargo is loaded.
(2) An NLS cargo is transferred between tanks on a ship.
(3) An NLS cargo is unloaded from a
tank.
(4) A tank that last carried an NLS
cargo is prewashed under this part.
(5) A tank that last carried an NLS
cargo is washed, except as reported
under paragraph (a)(4) of this section,
cleaned, or ventilated.
(6) Washings from a tank that last
carried an NLS cargo are discharged to
the sea.
(7) Tanks that last carried an NLS
cargo are ballasted.
(8) Ballast water is discharged to the
sea from a cargo tank that last carried
an NLS.
(9) An NLS cargo or NLS residue is
discharged to the sea by accident or except as allowed by this part.
(10) A Surveyor is present during an
operation that this part requires the
presence of a Surveyor.
(11) NLS residue or NLS cargo is
transferred from cargo pumproom
bilges or transferred to an incinerator.
(12) A waiver is issued to the ship,
ship owner, ship operator, or person in
charge of the ship under this part.
(13) The concentration of a Category
A NLS residue is measured under
§ 153.1120(a).
(14) Any discharge recording equipment required by § 153.481(b)(2) fails.
(b) The person in charge of the ship
shall ensure that the Cargo Record
Book is on board and readily available
for inspection and copying by the Coast
Guard and when the ship is a U.S. ship
in the waters of a foreign country
whose Administration is signatory to
MARPOL 73/78, the authorities of that
country.
(c) Each officer in charge of an operation listed under paragraph (a) of this
section, and each Surveyor observing
an operation that this part requires the
presence of a Surveyor, shall attest to
the accuracy and completeness of each

Cargo Record Book entry concerning
those operations by signing after each
entry.
(d) After all the entries on a page of
the Cargo Record Book are completed,
and if the person in charge of the ship
agrees with the entries, the person in
charge of the ship shall sign the bottom of that page.
(e) The ship owner or operator shall
ensure that—
(1) Each Cargo Record Book is retained on board the ship for at least 3
years after the last entry; and
(2) Each discharge recording required
by § 153.1126(b)(1) is retained on board
the ship for at least three years.
[CGD 81–101, 52 FR 7784, Mar. 12, 1987]

§ 153.910 Cargo piping plan.
No person may operate a tankship
unless the tankship has a cargo piping
plan that:
(a) Shows all cargo piping on the
tankship;
(b) Shows all cargo valving, pumps,
and other equipment that is used during cargo transfer;
(c) Shows the cargo tanks;
(d) Shows any modifications necessary to a containment system that is
to be separated as prescribed under
Part 150 of this subchapter, or §§ 153.525
and 153.1020;
(e) Emphasizes the piping and equipment described in paragraphs (a), (b)
and (d) of this section by using contrasting colors, line widths, or similar
methods; and
(f) Shows the cargo loading rates chosen under § 153.365(b) for all applicable
cargo lines.
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 78–128, 47 FR 21210, May 17,
1982]

§ 153.912 Certificate of inhibition or
stabilization.
(a) When a cargo in Table 1 is referred to this section, no person may
operate a tankship carrying the cargo
without a written certification, carried
on the bridge of the tankship, from the
shipper that the cargo is:
(1) Inhibited; or
(2) Stabilized.
(b) The certification required by this
section must contain the following information:

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Coast Guard, DOT

§ 153.933

(1) Whether the cargo is inhibited or
stabilized.
(2) The name and concentration of
the inhibitor or stabilizer.
(3) The date the inhibitor or stabilizer was added.
(4) The length of time the inhibitor
or stabilizer is effective.
(5) Any temperature limitations
qualifying the inhibitor’s or stabilizer’s
effective lifetime.
(6) The action to be taken should the
duration of the voyage exceed the inhibitor’s or stabilizer’s useful life.
GENERAL CARGO OPERATIONAL
REQUIREMENTS
§ 153.920

Cargo quantity limitations.

(a) No person may load a cargo tank
or operate a tankship that carries a
cargo tank containing in excess of 1250
m 3 (approx. 44,138 ft 3) of cargo requiring a type I containment system.
(b) No person may load a cargo tank
or operate a tankship that carries a
cargo tank containing in excess of 3000
m 3 (approx. 105,932 ft 3) of a cargo requiring a type II containment system.
§ 153.921

Explosives.

No person may load, off-load, or
carry a cargo listed in this part on
board a vessel that carries explosives
unless he has the prior written permission of the Commandant (G–MSO).
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 82–063b, 48 FR 4782, Feb. 3,
1983]

§ 153.923

Inerting systems.

The master shall ensure that the
inert gas systems for any cargo that
this part requires to be inerted are operating correctly.
GENERAL VESSEL SAFETY
§ 153.930

Cargo antidotes.

No person may operate a tankship
that carries a cargo listed in Table 1
unless the tankship has on board the
antidotes described for the cargo in the
Medical First Aid Guide for Use in Accidents Involving Dangerous Goods, published by IMO.

§ 153.931 Obstruction
ladderways.

of

pumproom

The master shall ensure that all
cargo pumproom ladderways are unobstructed at all times.
§ 153.932
ing.

Goggles and protective cloth-

(a) The master shall ensure that each
person wear a face mask or tight-fitting goggles for eye protection against
splashing or spraying liquids if that
person is:
(1) Sampling cargo;
(2) Transferring cargo;
(3) Making or breaking a cargo hose
connection;
(4) Gauging a cargo tank; or
(5) Opening a cargo tank by opening
a Butterworth hatch, ullage hatch,
cargo tank hatch, or similar opening.
(b) The master shall ensure that each
person wear a face mask or tight-fitting goggles for eye protection against
splashing or spraying liquids if the person is:
(1) In the area of the deck where the
cargo tanks, cargo piping, and cargo
pumprooms are located while a cargo
transfer is taking place; or
(2) In a cargo pumproom, an enclosed
space adjacent to a cargo tank, or a
space containing part of a cargo containment system.
(c) The master shall ensure that each
person in paragraphs (a) and (b) of this
section wear any additional protective
clothing the master believes necessary
to protect the person from the cargo’s
hazards.
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 78–128, 47 FR 21210, May 17,
1982]

§ 153.933

Chemical protective clothing.

When table 1 refers to this section,
the following apply:
(a) The master shall ensure that the
following chemical protective clothing
constructed of materials resistant to
permeation by the cargo being handled
is worn by all personnel engaged in an
operation listed in paragraph (b) of this
section:
(1) Splash protective eyewear.
(2) Long-sleeved gloves.
(3) Boots or shoe covers.
(4) Coveralls or lab aprons.

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§ 153.934

46 CFR Ch. I (10–1–00 Edition)

NOTE: ‘‘Guidelines for the Selection of
Chemical Protective Clothing’’, Third Edition, 1987, available from the American Conference of Governmental Industrial Hygienists, 1330 Kemper Meadow Drive, Cincinnati,
OH 45240–1634, provides information on the
proper clothing for the cargo being handled.

(b) This section applies during the
following operations:
(1) Sampling cargo.
(2) Transferring cargo.
(3) Making or breaking cargo hose
connections.
(4) Gauging a cargo tank, unless
gauging is by closed system.
(5) Opening cargo tanks.
(c) Coveralls or lab aprons may be replaced by splash suits or aprons constructed of light weight or disposable
materials if, in the judgment of the
master—
(1) Contact with the cargo being handled is likely to occur only infrequently and accidentally; and
(2) The splash suit or apron is disposed of immediately after contamination.
(d) Splash protective eyewear must
be tight-fitting chemical-splash goggles, face shields, or similar items intended specifically for eye protection
from chemical splashing or spraying.
(e) The master shall ensure that each
person in the vicinity of an operation
listed in paragraph (b) of this section
or in the vicinity of tanks, piping, or
pumps being used to transfer the cargo
wears splash protective eyewear under
paragraph (d) of this section.
[CGD 88–100, 54 FR 40042, Sept. 29, 1989; as
amended by USCG–1999–6216, 64 FR 53227, Oct.
1, 1999]

§ 153.934 Entry into spaces containing
cargo vapor.
(a) No person may enter a cargo
tank, cargo handling space, pumproom
or enclosed space in the cargo area
without the permission of the master.
(b) Before permitting anyone to enter
a cargo tank, cargo handling space,
pumproom or other enclosed space in
the cargo area, the master shall make
sure that:
(1) The space is free of toxic vapors
and has sufficient oxygen to support
life; or
(2) Those entering the space wear
protective equipment with self-con-

tained breathing apparatus as described in § 153.214(b) and an officer
closely supervises the entire operation.
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 78–128, 47 FR 21210, May 17,
1982]

§ 153.935 Opening of tanks and cargo
sampling.
(a) Except as provided in paragraph
(b) of this section, the master shall ensure that all cargo tank hatches, ullage
openings, and tank cleaning openings
are tightly closed at all times.
(b) The master may not authorize the
opening of a cargo tank, except:
(1) To clean a tank;
(2) To transfer a cargo that Table 1
allows in a containment system having
an open gauging system;
(3) To sample a cargo that Table 1 allows in a containment system having
an open gauging system; or
(4) To sample a cargo that Table 1 allows in a containment system having a
restricted gauging system if:
(i) The tank is not being filled during
sampling;
(ii) The vent system has relieved any
pressure in the tank;
(iii) The person sampling the cargo
wears the protective clothing required
during cargo transfer; and
(iv) The tank is closed tightly following sampling.
(c) The master shall make sure that
cargoes requiring closed gauging are
sampled only through the controlled
sampling arrangement required by
§ 153.404(d).
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 78–128, 47 FR 21210, May 17,
1982]

§ 153.935a Storage of cargo samples.
(a) The master shall make sure that
any cargo samples are stored in:
(1) A designated and ventilated space
in the cargo area of the vessel; or
(2) An area approved by the Commandant (G–MSO) or the tankship’s
flag administration for the stowage of
cargo samples.
(b) The master shall make sure that
cargo sample bottles are stored:
(1) In a way that prevents shifting of
the sample bottles when the vessel is
at sea;

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Coast Guard, DOT

§ 153.955

(2) In bins or containers constructed
of materials that are resistant to the
cargo samples; and
(3) Apart from other sample bottles
containing incompatible liquids (See
part 150, subpart A).
[CGD 78–128, 47 FR 21211, May 17, 1982, as
amended by CGD 82–063b, 48 FR 4782, Feb. 3,
1983]

§ 153.936 Illness, alcohol, drugs.
The master shall ensure that no person participates in cargo related operations who appears to be intoxicated
by alcohol or drugs or to be so ill as to
be unfit for the particular operation.
MARKING OF CARGO TRANSFER HOSE
§ 153.940 Standards for marking of
cargo hose.
No person may mark a hose assembly
as meeting the standards of this section unless the hose assembly meets
the following requirements:
(a) Each hose assembly must have:
(1) Fully threaded connections;
(2) Flanges that meet ANSI B16.5,
B16.24, or B16.31; or
(3) Class 1 quick-disconnect couplings
that comply with ASTM F 1122 (incorporated by reference, see § 153.4), and
are marked ‘‘C1–1.’’
(b) Each hose assembly must be
marked with the:
(1) Date of manufacture;
(2) Working pressure discribed in
paragraph (d) of this section;
(3) Date of the last test made as prescribed in paragraph (e) of this section;
and
(4)
Manufacturer’s
recommended
maximum and minimum temperatures.
(c) A cargo hose assembly must have
a minimum bursting pressure as stated
by the manufacturer of at least 5152
kPa gauge (approx. 750 psig).
(d) The working pressure marked on
a hose must meet the following:
(1) Be at least 1030 kPa gauge
(approx. 150 psig).
(2) Not exceeded 20 per cent (onefifth) of the manufacturer’s stated
bursting pressure.
(3) Not exceed the manufacturer’s
recommended working pressure.
(4) Not exceed the test pressure used
in the latest test under paragraph (e)(3)
of this section.

(e) A cargo hose assembly must be inspected and tested by placing it in a
straight, horizontal position so that its
entire external surface is accessible. It
must be ascertained that the hose assembly:
(1) Has no loose covers, kinks, bulges,
soft spots, and no gouges, cuts, or
slashes that penetrate any hose reinforcement;
(2) Has no external and, to the extent
internal inspection is possible with
both ends of the hose open, no internal
deterioration; and
(3) Does not burst, bulge, leak, or abnormally distort under static liquid
pressure at least as great as the recommended working pressure.
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 78–128, 47 FR 21211, May 17,
1982; CGD 88–032, 56 FR 35827, July 29, 1991;
USCG–2000–7790, 65 FR 58463, Sept. 29, 2000]

CARGO TRANSFER PROCEDURES
§ 153.953
fer.

Signals during cargo trans-

The master shall ensure that:
(a) The tankship displays a red flag
in the day and a red light at night
when transferring cargo while fast to a
dock;
(b) The tankship displays a red flag
when transferring cargo while at anchor; and
(c) The red flag or the red light is
visible from all sides of the tankship.
§ 153.955 Warning signs during cargo
transfer.
(a) When transferring cargo while
fast to a dock or at anchor in port, the
master shall ensure that the tankship
displays a warning sign at the gangway
facing the shore so that it may be seen
from the shore and another warning
sign facing outboard toward the water
so that it may be seen from the water.
(See figure 1).
(b) Except as provided in paragraph
(f) of this section, each warning sign
must have the following legends:
(1) Warning.
(2) Dangerous Cargo.
(3) No Visitors.
(4) No Smoking.
(5) No Open Lights.
(c) Each letter must be block style,
black on a white background.

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§ 153.957

46 CFR Ch. I (10–1–00 Edition)

(d) Each letter must:
(1) Be 7.5 cm (approx. 3 in.) high;
(2) Be 5 cm (approx. 2 in.) wide except
for ‘‘M’’ and ‘‘W’’ which must be 7.5 cm

(approx. 3 in.) wide and the letter ‘‘I’’
which may be 1.3 cm (approx. 1⁄2 in.)
wide; and

(3) Have 1.3 cm (approx. 1⁄2 in.) stroke
width.
(e) The spacing must be:
(1) 1.3 cm (approx. 1⁄2 in.) between letters of the same word;
(2) 5 cm (approx. 2 in.) between words;
(3) 5 cm (approx. 2 in.) between lines;
and
(4) 5 cm (approx. 2 in.) at the borders
of the sign.
(f) Except as described in § 153.1045,
the legends ‘‘No Smoking’’ and ‘‘No
Open Lights’’ are not required when
the cargoes on board the tankship are
neither flammable nor combustible.

ignated as a person in charge of the
transfer or the cleaning under Subpart
C of 33 CFR part 155;
(3) When cargo regulated under this
part is due for transfer, the person in
charge of the transfer has received special training in the particular hazards
associated with the cargo and in all
special procedures for its handling; and
(4) On each foreign vessel, the person
in charge understands his or her responsibilities as described in this subchapter.
(b) Upon request by the Officer in
Charge, Marine Inspection, in whose
zone the transfer will take place, the
owner and operator of the vessel, and
his or her agent, and each of them,
shall provide documentary evidence
that the person in charge has received
the training specified by paragraph
(a)(3) of this section and is capable of
competently performing the procedures
necessary for the cargo.

§ 153.957 Persons in charge of transferring liquid cargo in bulk or
cleaning cargo tanks.
(a) The owner and operator of the
vessel, and his or her agent, and each
of them, shall ensure that—
(1) Enough ‘‘Tankerman-PICs’’ or restricted
‘‘Tankerman-PICs’’,
and
‘‘Tankerman-Assistants’’,
authorized
for the classification of cargo carried,
are on duty to safely transfer liquid
cargo in bulk or to safely clean cargo
tanks;
(2) Each transfer of liquid cargo in
bulk and each cleaning of a cargo tank
is supervised by a qualified person des-

[CGD 79–116, 60 FR 17158, Apr. 4, 1995]

§ 153.959 Approval to begin transfer
operations required.
No person may make connections for
cargo transfer or transfer cargo unless

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Coast Guard, DOT

§ 153.972

he has authorization from the person
in charge of cargo transfer.
§ 153.964 Discharge by gas pressurization.
The person in charge of cargo transfer may not authorize cargo discharge
by gas pressurization unless:
(a) The tank to be offloaded has an
SR or PV venting system;
(b) The pressurization medium is either the cargo vapor or a nonflammable, nontoxic gas inert to the cargo;
and
(c) The pressurizing line has:
(1) A pressure reducing valve whose
setting does not exceed 90% of the
tank’s relief valve setting and a manual control valve between the pressure
reducing valve and the tank; or
(2) For an inert gas medium:
(i) A safety relief valve with a cross
sectional flow area at least equal to
that of the pressurizing line and whose
relieving pressure does not exceed 90
percent of the tank’s relief valve setting;
(ii) A manual control valve between
the safety relief valve and the tank;
and
(iii) A check valve between the manual control valve and the tank.
§ 153.966 Discharge by liquid displacement.
The person in charge of cargo transfer may not authorize cargo discharge
by liquid displacement unless the liquid supply line to the tank has:
(a) A safety relief or pressure reducing valve set to operate at no more
than 80 percent of the tank’s relief
valve setting; and
(b) A manual control valve between
the tank and the supply line’s safety
relief valve or pressure reducing valve.
§ 153.968 Cargo transfer conference.
(a) Before he may begin making connections for cargo transfer, the person
in charge of cargo transfer shall confer
with the person supervising the cargo
transfer at the facility.
(b) The person in charge of cargo
transfer shall discuss the important aspects of the transfer operation, such as
the following, with the supervisor at
the facility:
(1) The products to be transferred.

(2) The cargo loading rates marked
on the cargo piping plan or the maximum safe transfer rates.
(3) The critical or hazardous stages of
the transfer operation.
(4) The emergency procedures in case
of a spill.
(5) If the vessel is equipped with the
tank overflow alarm prescribed in
§ 153.408(c), a procedure for shutdown of
shore pumps, shore valves, and ship’s
valves that prevents piping system
pressures from exceeding those for
which the piping system is designed.
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 78–128, 47 FR 21211, May 17,
1982; CGD 81–078, 50 FR 21174, May 22, 1985]

§ 153.970

Cargo transfer piping.

The person in charge of cargo transfer shall ensure that:
(a) Cargo is transferred to or from a
cargo tank only through the tankship’s
cargo piping system;
(b) Vapor not returned to shore
through the tankship’s vapor return
system is discharged at the height required for the cargo’s vent riser in
Table 1, and
(c) All cargo vapor is returned to
shore through the valved connection on
the venting system if:
(1) The cargo requires closed gauging,
is referenced to § 153.372 or is referenced
to § 153.525;
(2) The transfer terminal has vapor
return equipment; and
(3) In his estimation the vapor return
equipment is adequate to handle the
vapor expected from the tank.
§ 153.972

Connecting a cargo hose.

The person in charge of cargo transfer may not authorize the connection
of a hose to a cargo containment system unless:
(a) He has ensured himself that the
cargo will not weaken or damage the
hose;
(b) The hose is marked as meeting
the standards of § 153.940;
(c) The date of the hose’s last pressure test is within one year of the date
on which the hose is used to transfer
cargo;
(d) The recommended working pressure marked on a hose used for discharge meets or exceeds the working

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§ 153.975

46 CFR Ch. I (10–1–00 Edition)

pressure marked on the cargo piping at
the hose connection; and
(e) The cargo’s temperature is within
the manufacturer’s recommended maximum and minimum hose temperatures.
§ 153.975 Preparation for cargo transfer.
The person in charge of cargo transfer may not approve or continue cargo
transfer unless the following conditions are met:
(a) No fires or open flames are on
deck or in compartments near the hose
connections when Table 1 requires the
cargo’s containment system to have a
fire protection system.
(b) Any electrical bonding of the
tankship to the transfer facility is
made before the cargo transfer piping
is joined.
(c) Any supplemental inert gas supply necessary to maintain the 3.5 kPa
gauge (approx. 0.5 psig) pressure in the
tank during offloading (see § 153.500) is
connected to the inert gas pressure
control system.
(d) The transfer connections have
enough slack to allow for vessel movement.
(e) The transfer connections are supported by tackles.
(f) The cargo high level alarms, tank
overflow alarms and overflow control
systems are functioning correctly when
the cargo is loaded.
(g) Joints and couplings are gasketed
and mated tightly.
(h) Flanges are bolted tightly.
(i) No repair work is underway in
areas where cargo or cargo vapors may
collect.
(j) Cargo and sea valves are properly
set, with those sea valves connected to
cargo piping lashed or sealed shut.
(k) Venting system bypass valves are
set for cargo transfer and are operating
properly.
(l) All scuppers are plugged.
(m) Smoking is limited to safe
places.
(n) Fire fighting and safety equipment is ready.
(o) He is in effective communication
with the transfer terminal.
(p) The person in charge of the transfer terminal has acknowledged that he
is ready to transfer.

(q) Pressures within the cargo transfer and containment systems do not exceed the pressure ranges for which the
transfer hose and containment systems
are designed.
(r) No vessels that would hazard
cargo transfer are alongside the tankship.
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 78–128, 47 FR 21211, May 17,
1982]

§ 153.976 Transfer of packaged cargo
or ship’s stores.
The person in charge of cargo transfer may neither begin nor continue the
transfer of a flammable or combustible
cargo while packaged cargo or ship’s
stores are transferred unless transfer of
the packaged cargo or ship’s stores
does not hazard transfer of the flammable or combustible cargo.
§ 153.977
fer.

Supervision of cargo trans-

The person in charge of cargo transfer shall:
(a) Supervise the operation of cargo
system valves;
(b) Monitor the cargo loading rate to
ensure it does not exceed that stated
on the cargo piping plan; and
(c) Monitor the cargo level in the
tanks to make sure they do not overflow.
[CGD 78–128, 47 FR 21211, May 17, 1982]

§ 153.979 Gauging
tube.

with

a

sounding

(a) No person may remove the cover
of a sounding tube unless he has authorization from the person in charge
of cargo transfer.
(b) The person in charge of cargo
transfer may not authorize removal of
the cover from a sounding tube gauge
unless all tank pressure has been relieved through the tank’s venting system.
§ 153.980 Isolation of automatic closing
valves.
The person in charge of cargo transfer may isolate automatic closing
valves described in § 153.408(b) from a
cargo containment system if the following conditions are met:

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Coast Guard, DOT

§ 153.1010

(a) The containment system carries
products to which § 153.408 does not
apply.
(b) The valves are isolated by:
(1) Removing the valves; or
(2) Installing removable pipes and
blind flanges to by-pass the valves.

would induce polymerization, decomposition, thermal instability, evolution of
gas or reaction of the cargo;
(b) Any heating coils in the cargo
tank are blanked off; and
(c) The cargo is not carried in
uninsulated deck tanks.

[CGD 78–128, 47 FR 21211, May 17, 1982]

[CGD 78–128, 47 FR 21211, May 17, 1982]

§ 153.981 Leaving room in tank for
cargo expansion.
The person in charge of cargo transfer shall ensure that the amount of
cargo in a tank does not exceed the
tank’s capacity at any ambient temperature between ¥18 °C (approx. 0 °F)
and 46 °C (approx. 115 °F).
§ 153.983 Termination procedures.
Upon completion of the transfer operation, the person in charge of cargo
transfer shall ensure that:
(a) The cargo transfer connections
are closed off;
(b) The transfer lines and hoses are
drained of cargo, either into the tank
or back to the transfer terminal;
(c) Any electrical bonding between
the vessel and the shore facility is broken only after the cargo hose is disconnected and all spills removed; and
(d) Each vent system is returned to
its nonloading configuration.
SPECIAL CARGO PROCEDURES

§ 153.1003 Prohibited carriage in deck
tanks.
When Table 1 refers to this section,
cargoes may not be carried in deck
tanks.
[CGD 95–900, 60 FR 34050, June 29, 1995]

§ 153.1004
goes.

Inhibited and stabilized car-

(a) Before loading a cargo containment system with a cargo referenced to
this section in Table 1, the person in
charge of cargo transfer shall make
sure that the cargo containment system is free of contaminants that could:
(1) Catalyze the polymerization or decomposition of the cargo; or
(2) Degrade the effectiveness of the
inhibitor or stabilizer.
(b) The master shall make sure that
the cargo is maintained at a temperature which will prevent crystallization
or solidification of the cargo.
[CGD 78–128, 47 FR 21211, May 17, 1982]

§ 153.1000 Special operating requirements for cargoes reactive with
water.
When Table 1 refers to this section,
the master must ensure that the cargo:
(a) Is carried only in a containment
system completely isolated from any
systems containing water, such as slop
tanks, ballast tanks, cargo tanks containing slops or ballast, their vent
lines or piping; and
(b) Is separated by double walls, such
as cofferdams and piping tunnels, from
any system containing water, as for example those described in paragraph (a)
of this section.
§ 153.1002 Special operating requirements for heat sensitive cargoes.
When Table 1 refers to this section,
the master shall make sure that:
(a) The cargo temperature is maintained below the temperature that

§ 153.1010

Alkylene oxides.

(a) Before each loading of a cargo
containment system with a cargo referenced to this section in Table 1, the
person in charge of cargo transfer
shall:
(1) Unless the tankship is equipped
with independent cargo piping that
meets paragraph (d) of this section:
(i) Obtain verification from a Coast
Guard Marine Inspector or from a representative of the tankship’s flag administration that separation of the alkylene oxide piping system complies
with alkylene oxide handling plans approved by the Coast Guard or the tankship’s flag administration; and
(ii) Make sure that each spectacle
flange and blank flange connection
that is required to separate alkylene
oxide piping systems from other systems has a wire and seal attached by a

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§ 153.1011

46 CFR Ch. I (10–1–00 Edition)

Coast Guard Marine Inspector or a representative of the tankship’s flag administration.
(2) Purge the containment system
until the oxygen content of the cargo
tank is less than 2% by volume.
(b) The person in charge of an alkylene oxide cargo transfer shall ensure
that:
(1) No alkylene oxide vapor or liquid
is released to the atmosphere during
cargo transfer;
(2) No vapor return system connected
to an alkylene oxide containment system is at the same time connected to
another containment system;
(3) Alkylene oxide is discharged only
by an intank cargo pump or inert gas
displacement;
(4) Transfer hose is approved by the
Commandant
(G–MSO)
under
§ 153.530(o) for alkylene oxide transfer
and is marked ‘‘For Alkylene Oxide
Transfer Only’’; and
(5) A water hose is laid out on deck
with water pressure to the nozzle, and
all alkylene oxide spillages are washed
away immediately.
(c) While alkylene oxides are onboard
the vessel, the master shall make sure
that the oxygen content of the vapor
space above the alkylene oxide and
those spaces specified in § 153.530 (k)
and (l) is maintained below 2% by volume.
(d) Tankships with independent piping for alkylene oxides must have onboard:
(1) Alkylene oxide handling plans approved by the Coast Guard or the tankship’s flag administration; and
(2) Certification from the Coast
Guard or the tankship’s flag administration that the cargo piping for alkylene oxides is independent.
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 78–128, 47 FR 21211, May 17,
1982; CGD 82–063b, 48 FR 4782, Feb. 3, 1983]

§ 153.1011 Changing containment systems and hoses to and from alkylene oxide service.
(a) The person in charge of cargo
transfer shall make sure that:
(1) No alkylene oxide is loaded into a
containment system that last carried a
cargo other than an alkylene oxide unless the containment system has been
cleaned and inspected to make sure it

is in good condition with no heavy rust
accumulations or traces of previous
cargoes;
(2) No alkylene oxide is loaded into a
containment system that within the
previous three loadings carried a cargo
listed in paragraph (b) of this section
unless the containment system has
been cleaned to the satisfaction of a
Coast Guard Marine Inspector or a person specifically authorized by the Commandant (G–MSO) to approve alkylene
oxide tank cleaning;
(3) No cargo but an alkylene oxide is
loaded into a containment system
which last carried an alkylene oxide
unless the containment system has
been cleaned of alkylene oxide to the
satisfaction of a Coast Guard Marine
Inspector or person specifically authorized by the Commandant (G–MSO) to
approve alkylene oxide tank cleaning;
and
(4) No hose marked ‘‘For Alkylene
Oxide Transfer Only’’ is used for the
transfer of a cargo other than an alkylene oxide.
(b) The following cargoes are particularly reactive with alkylene oxides:
(1) Non-oxidizing mineral acids (e.g.
hydrochloric, phosphoric);
(2) Sulfuric acid;
(3) Nitric acid;
(4) Organic acids (e.g. acetic, formic);
(5) Halogenated organic acids (e.g.
chloroacetic);
(6) Sulfonic acids (e.g. alkyl benzene
sulfonic);
(7) Caustic alkalies (e.g. caustic soda,
caustic potash; sodium hydrosulfide);
(8) Ammonia and ammonia solutions;
(9) Aliphatic amines;
(10) Alkanolamines; and
(11) Oxidizing substances.
[CGD 78–128, 47 FR 21211, May 17, 1982, as
amended by CGD 82–063b, 48 FR 4782, Feb. 3,
1983; CGD 81–078, 50 FR 21174, May 22, 1985]

§ 153.1020 Unusually toxic cargoes.
(a) No person may load or carry a
cargo referenced to this section in
Table 1 unless the cargo’s piping and
venting systems are separated from
piping and venting systems carrying
cargoes not referred to this section.
(b) The master shall ensure that no
heat transfer medium that has been
circulated through a cargo referenced
to this section in Table 1 is circulated

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Coast Guard, DOT

§ 153.1060

through a cargo not referenced to this
section unless he determines the medium to be uncontaminated with cargo.
(c) No person may discharge overboard condensed steam from the heating system of a cargo referenced to this
section in Table 1 unless he first determines
the
condensate
to
be
uncontaminated with cargo.
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 78–128, 47 FR 21212, May 17,
1982]

§ 153.1025 Motor fuel antiknock compounds.
(a) No person may load or carry any
other cargo in a containment system
approved for motor fuel antiknock
compounds containing lead alkyls except a cargo to be used solely in the
manufacture of motor fuel antiknock
compounds.
(b) The master shall ensure that no
person enter a pumproom or void space
that contains piping from a containment system approved for motor fuel
antiknock compounds containing lead
alkyls unless:
(1) The pumproom or void space atmosphere has been analyzed for its lead
(as Pb) content and found to be less
than 0.075 mg/m3 ; or
(2) The person follows the procedures
for entering a cargo tank described in
paragraph (c) of this section.
(c) No person may enter a cargo tank
endorsed for motor fuel antiknock
compounds containing lead alkyls
without prior specific authorization
from the Commandant (G–MSO). This
authorization may be obtained by telephone ((202) 267–1217) if the person has
previously obtained approval for the
cargo tank entry procedure from the
Commandant (G–MSO).
(d) No person may enter a cargo tank
endorsed for motor fuel antiknock
compounds if he does not follow the
conditions in the authorization under
paragraph (c) of this section.
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 78–128, 47 FR 21212, May 17,
1982; CGD 82–063b, 48 FR 4782, Feb. 3, 1983;
CGD 88–100, 54 FR 40042, Sept. 29, 1989]

§ 153.1035 Acetone
cyanohydrin
or
lactonitrile solutions.
No person may operate a tankship
carrying a cargo of acetone cyano-

hydrin or lactonitrile solutions, unless
that cargo is stabilized with an inorganic acid.
[CGD 88–100, 54 FR 40042, Sept. 29, 1989]

§ 153.1040

Carbon disulfide.

(a) No person may load, carry, or discharge carbon disulfide unless the
cargo tank has a water pad over the
cargo of at least one meter (approx. 40
in.).
(b) The person in charge of a carbon
disulfide transfer operation shall ensure that carbon disulfide is discharged
only by displacement or intank cargo
pump.
(c) No person may remove a cargo
pump for a containment system that
carries carbon disulfide unless:
(1) The containment system has a gas
free certificate issued under the standards in § 35.01–1 of this chapter; or
(2) The vapor space in the pump well
is filled with water.
§ 153.1045

Inorganic acids.

When Table 1 refers to this section,
the person in charge of cargo transfer
shall ensure that the legends ‘‘NO
SMOKING’’ and ‘‘NO OPEN LIGHTS’’
are displayed on the warning sign required in § 153.955(a) when cargo is
transferred.
§ 153.1046

Sulfuric acid.

No person may liquefy frozen or
congealed sulfuric acid other than by
external tank heating coils.
§ 153.1052 Carriage of other cargoes in
acid tanks.
No person shall load or carry other
cargoes in a cargo containment system
of a U.S. flag ship endorsed to carry
sulfuric acid, hydrochloric acid, or
phosphoric acid with out specific authorization from the Commandant (G–
MSO).
[CGD 94–900, 59 FR 45139, Aug. 31, 1994]

§ 153.1060

Benzene.

The person in charge of a Coast
Guard inspected vessel must ensure
that the provisions of part 197, subpart
C, of this chapter are applied.
[CGD 88–040, 56 FR 65006, Dec. 13, 1991]

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§ 153.1065
§ 153.1065

46 CFR Ch. I (10–1–00 Edition)
Sodium chlorate solutions.

(a) No person may load sodium chlorate solutions into a containment system that previously carried another
cargo unless the containment system is
thoroughly washed before loading.
(b) The person in charge of cargo
transfer shall make sure that spills of
sodium chlorate solutions are immediately washed away.
[CGD 81–078, 50 FR 21174, May 22, 1985]

APPROVAL OF SURVEYORS AND HANDLING
OF CATEGORIES A, B, C, AND D CARGO
AND NLS RESIDUE
SOURCE: CGD 81–101, 52 FR 7785, Mar. 12,
1987, unless otherwise noted.

§ 153.1100 Responsibility of the person
in charge.
The person in charge of the ship shall
ensure that—
(a) The requirements of §§ 153.1102
through 153.1132 are met; and
(b) The procedures in the approved
Procedures and Arrangements Manual
are followed.
§ 153.1101 Procedures for getting a
Surveyor: Approval of Surveyors.
(a) At least 24 hours before a Surveyor is needed, the person wishing the
services of a Surveyor must contact
the Captain of the Port or the Marine
Safety Office that has jurisdiction over
the port at which the Surveyor will be
needed to—
(1) Arrange for the Coast Guard to
provide a Surveyor; or
(2) Inform the Coast Guard of the selection of a Surveyor from one of the
organizations accepted by the Coast
Guard to provide Surveyors.
(b) Organizations may be accepted by
the Coast Guard to provide Surveyors
if they—
(1) Are engaged, as a regular part of
their business, in performing inspections or tests of bulk liquid cargo
tanks or bulk liquid cargo handling
equipment;
(2) Are familiar with the references
in § 153.0(b) and with the requirements
of this part;
(3) Are not controlled by the owners
or operators of ships needing the services of the Surveyors or the facilities

at which those ships would unload
cargo;
(4) Are not dependent on Coast Guard
acceptance under this section to remain in business; and
(5) Sign a Memorandum of Understanding with the Coast Guard.
(c) Each application for acceptance
as a Surveyor must be submitted to the
Commandant (G–MSO) and must contain the following:
(1) The name and address of the organization, including subsidiaries and divisions, requesting acceptance by the
Coast Guard to provide Surveyors.
(2) A statement that the organization
is not controlled by the owners or operators of ships needing the services of
Surveyors or the facilities at which
these ships would unload, or a full disclosure of any ownership or controlling
interest held by such parties.
(3) A description of the experience
and qualifications of the personnel who
would be performing the function of
Surveyor.
(4) A statement that the persons who
will be performing the function of Surveyor have been trained in and are familiar with the requirements of Annex
II and the regulations in this part.
(5) A statement that the Coast Guard
may verify the information submitted
in the application and may examine
the persons who will be performing the
function of Surveyor to determine
their qualifications.
(d) The acceptance of an organization
may be terminated by the Commandant if the organization fails to
properly perform or supervise the inspections required in this part.
§ 153.1102 Handling and disposal of
NLS residue: Cateqories A, B, C,
and D.
(a) Except those Category A NLS residues that must be discharged under
paragraph (c) of this section, NLS residue from an NLS whose vapor pressure
is 5 kPa (50 mbar) or less at 20 °C (68 °F)
must be—
NOTE TO PARAGRAPH (a): The Marine Protection, Research, and Sanctuaries Act allows specific liquids to be discharged to the
sea under permits issued by the EPA.

(1) Unloaded to any consignee;
(2) Returned to the shipper;
(3) Discharged to a reception facility;

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Coast Guard, DOT

§ 153.1114

(4) Retained on the ship; or
(5) Discharged to the sea under
§ 153.1126 or § 153.1128.
(b) Except those Category A NLS residues that must be discharged under
paragraph (c) of this section, NLS residue from an NLS whose vapor pressure
is greater than 5 kPa (50 mbar) at 20 °C
must be—
(1) Handled in the same way as the
NLS residue under paragraph (a) of this
section; or
(2) Ventilated following a ventilation
procedure in the approved Procedures
and Arrangements Manual.
NOTE: The Clean Air Act (42 U.S.C. 7401 et
seq) allows states to regulate emissions from
tank ventilation. There may be other regulations, both local and Federal, that affect the
use of tank ventilation for safety or environmental purposes.

(c) NLS residue containing Category
A NLS in pumproom bilges and in spill
trays at the manifold must be discharged to a reception facility.
[CGD 81–101, 52 FR 7785, Mar. 12, 1987, as
amended by CGD 81–101, 53 FR 28975, Aug. 1,
1988 and 54 FR 12629, Mar. 28, 1989]

§ 153.1104 Draining of cargo hose: Categories A, B, C, and D.
Before a cargo hose used in discharging an NLS from a ship’s cargo
tank is disconnected, the hose must be
drained back to the transfer terminal
unless the tank unloading the cargo
has a waiver under § 153.483 or § 153.491.
[CGD 81–101, 53 FR 28975, Aug. 1, 1988 and 54
FR 12629, Mar. 28, 1989]

§ 153.1106

Cleaning agents.

No tank cleaning agent other than
water or steam may be used to clean an
NLS residue from a cargo tank except
as prescribed in the approved Procedures and Arrangements Manual.
§ 153.1108 Heated prewash for solidifying NLS, high viscosity NLS and
required prewashes of NLS whose
viscosity exceeds 25 mPa sec at 20
≥C: Categories A, B, and C.
(a) When a high viscosity or solidifying cargo is unloaded from a cargo
tank, the cargo tank must be
prewashed unless § 153.1114 or paragraph
(c) of this section allows the prewash
to be omitted.

(b) When a prewash is required for a
tank that has unloaded a solidifying
cargo or a cargo having a viscosity exceeding 25 mPa sec at 20 °C, the wash
water used in the prewash must leave
the tank washing machine at a temperature of at least 60 °C (140 °F).
(c) The prewash required under paragraph (a) of this section may be omitted if the approved Procedures and Arrangements Manual contains a procedure for measuring the temperature of
all interior cargo tank surfaces
throughout unloading and under the
measuring procedure the temperature
of these surfaces remains above—
(1) The temperature of the cargo’s
melting point if the cargo is a Category
B or C solidifying NLS; or
(2) The temperature at which the cargo’s viscosity exceeds—
(i) 25 mPa.s, if the cargo is a high viscosity Category B NLS; or
(ii) 60 mPa.s, if the cargo is a high
viscosity Category C NLS.
[81–101, 53 FR 28975, Aug. 1, 1988 and 54 FR
12629, Mar. 28, 1989]

§ 153.1112 Prewash for tanks containing Category A NLS residue.
Unless § 153.1114 allows the prewash
to be omitted, a cargo tank that unloads a Category A NLS cargo must be
prewashed following the procedures in
§ 153.1120.
§ 153.1114 Conditions under which a
prewash may be omitted: Categories A, B, and C.
A prewash required by this part may
be omitted if one of the following requirements is met:
(a) A Surveyor has signed a statement in the Cargo Record Book that
the next cargo has been determined to
be one that may be loaded without
washing the tank, and the tank is not
washed or ballasted before it is loaded
with the next cargo.
(b) A Surveyor has signed a statement in the Cargo Record Book that
the approved Procedures and Arrangements Manual contains procedures for
removing the NLS residue by ventilation, and the cargo tank is not washed
or ballasted before being cleaned following the ventilation procedure.
NOTE: The Clean Air Act (42 U.S.C. 7401 et
seq.) allows states to regulate emissions from

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§ 153.1116

46 CFR Ch. I (10–1–00 Edition)

tank ventilation. There may be other regulations, both local and Federal, that affect the
use of tank ventilation for safety or environmental purposes.

(c) The tank requiring the prewash
has a waiver issued under § 153.483 or
§ 153.491 and the waiver states when the
tank is to be prewashed.
§ 153.1116 Prewash for tanks unloaded
without following the approved
Procedures and Arrangements Manual: Categories B and C.
If for any reason more Category B or
C NLS residue remains in a cargo tank
and transfer piping of a ship after unloading than would remain after a normal discharge of the cargo when the
unloading procedures in the approved
Procedures and Arrangements Manual
are followed, the tank must be
prewashed following the procedures in
§ 153.1120 unless—
(a) Section 153.1114 allows the
prewash to be omitted; or
(b) The residue is reduced using another procedure, and a Surveyor estimates and states in the Cargo Record
Book that the cargo tank and transfer
piping contain no more NLS residue
than they would if discharged following
the procedures in the approved Procedures and Arrangements Manual, and
no other prewash is required by this
part.
§ 153.1118 Prewash of Categories B
and C cargo tanks not meeting
stripping standards: Categories B
and C.
(a) Unless § 153.1114 allows the
prewash to be omitted, a cargo tank
from which a Category B NLS is unloaded must be prewashed using the
procedures in § 153.1120(b) if the tank—
(1) Operates under the interim standard in § 153.481(b); or
(2) Has a waiver issued under § 153.483.
(b) Unless § 153.1114 allows the
prewash to be omitted, a cargo tank
from which a Category C NLS is unloaded must be prewashed using the
procedures in § 153.1120(b) if the tank
has a waiver issued under § 153.483.

§ 153.1119 When to prewash and discharge NLS residues from a
prewash; unloading an NLS cargo
in a country whose Administration
is not signatory to MARPOL 73/78:
Categories A, B, and C.
(a) Except as allowed in paragraphs
(b), (c), and (e) of this section, each
prewash required by this subpart must
be completed and all tank washings
must be discharged to a reception facility before the ship leaves the unloading
port.
(b) NLS residue from the prewash following the unloading of a Category B
NLS may be transferred to a slop tank
for discharge under § 153.1126 instead of
being discharged under paragraph (a) of
this section if the prewash is required
solely under § 153.1118(a)(1).
(c) A tank that is required by this
part to be prewashed may be prewashed
in a port other than the unloading port
if the following conditions are met:
(1) The person in charge requests permission from the Commandant (G–
MSO) (tel num; 202–267–1217) if the
prewash port is a foreign port, or the
Captain of the Port having jurisdiction
over the unloading port if the prewash
port is a U.S. port.
(2) The person in charge supplies with
the request required under paragraph
(c)(1) of this section—
(i) The name of the ship;
(ii) The name of the owner;
(iii) The name of the NLS;
(iv) The approximate date the tank
will be prewashed if the relocation of
the prewash port is for one time only;
(v) A written agreement to receive
the tank washings by a reception facility in the prewash port;
(vi) When the prewash port or terminal is in a country whose Administration is signatory to MARPOL 73/78,
a written attestation from the person
in charge of each prewash port or terminal that the Administration has determined the port or terminal to have
adequate reception facilities for the
NLS residue;
(vii) Written pledges from the person
in charge that—
(A) The tank to be prewashed will
not be washed or ballasted before being
prewashed; and

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Coast Guard, DOT

§ 153.1120

(B) The ship will be taken to the reception
facility
and
the
tank
prewashed in accordance with the requirements in § 153.1120; and
(viii) Any additional information the
Captain of the Port or Commandant
(G–MSO) requests to evaluate granting
the permission.
(3) The Coast Guard or Commandant
(G–MSO) has granted the permission in
writing, the permission is carried
aboard the ship, and the person in
charge of the ship has made an entry in
the Cargo Record Book stating that
the permission has been granted.
(d) Unless the permission granted
under paragraph (c)(4) of this section
includes alternate conditions of termination or revocation in writing, the
permission is—
(1) Terminated after the tank is
prewashed as pledged in paragraph
(c)(3)(vii) of this section or loaded with
another cargo;
(2) Revoked if either of the pledges in
paragraph (c)(3)(vii) of this section is
invalidated or the agreement in paragraph (c)(3)(v) of this section is repudiated; and
(3) Revoked at any time the ship is
not operated in accordance with the
pledges in paragraph (c)(3)(vii) of this
section and the conditions listed with
the granted permission.
(e) A U.S. ship that would otherwise
be required by this part to prewash in
a port without reception facilities
must obtain permission from Commandant (G–MSO) to prewash in an alternate port.
§ 153.1120 Procedures
for
tank
prewash: Categories A, B, and C.
Except where the approved Procedures and Arrangements Manual prescribes a different procedure, each of
the following steps must be done in the
order listed for the Coast Guard to consider the tanks prewashed under this
part:
(a) When this part requires a prewash
of a tank containing Category A NLS
residue and the alternative prewash
procedure in paragraph (b) of this section is not used, the prewash must
meet the following:
(1) The prewash may not begin
until—
(i) A Surveyor is present; and

(ii) Instrumentation or equipment is
available that is capable of measuring
the concentration of the Category A
NLS in the NLS residue and determining whether it is below 0.1 per cent
by weight.
(2) The equipment specified in
§ 153.484 must be used as prescribed in
the approved Procedures and Arrangements Manual for the prewash.
(3) The wash water must be heated if
required by § 153.1108, and water or tank
washings must pass through the cargo
pump and piping, including any stripping equipment, during washing or during discharge of tank washings.
(4) The tank washing machine must
be placed in all positions specified for
the tank’s Category A NLS prewash
procedure in the approved Procedures
and Arrangements Manual.
(5) The tank must be pumped out
each time there are enough tank
washings collected in the bottom of the
tank for the pump to gain suction, and
if the NLS is immiscible with water or
is a solidifying cargo, all floating and
suspended NLS must be discharged.
(6) The washing machine must be operated until samples of the discharged
tank washings taken by the Surveyor
are tested using the equipment required by paragraph (a)(1)(ii) of this
section and the concentration of NLS
is below 0.1 per cent by weight.
(7) After the washing is stopped, the
remaining tank washings must be
pumped out.
(8) The Cargo Record Book must have
items 12 through 14 completed and
must show the Surveyor’s written certification of their accuracy.
(9) The Cargo Record Book must have
the Surveyor’s written concurrence
that the prewash procedures specified
in the approved Procedures and Arrangements Manual were followed.
(b) When this part requires a prewash
of a tank containing Category B or C
NLS residue or when the procedure in
this paragraph is used as an alternative
to the prewash procedure under paragraph (a) of this section, the prewash
must meet the following:
(1) If the prewash is for a Category A
NLS, the prewash may not begin until
a Surveyor is present.
(2) The equipment specified in
§ 153.484 must be used as prescribed in

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§ 153.1122

46 CFR Ch. I (10–1–00 Edition)

the approved Procedures and Arrangements Manual for the prewash.
(3) The wash water must be heated if
required by § 153.1108, and water or tank
washings must pass through the cargo
pump and piping, including any stripping equipment, during washing or during discharge of tank washings.
(4) Except as required in paragraph
(b)(5) of this section, the number of
washing machine cycles specified in
Table 153.1120 must be completed. If a
prewash is required by a section listed
under Column 1 of Table 153.1120 and
another section listed under Column 2,
the number of cycles in Column 1 must
be completed but no additional cycles
are necessary.
(5) If the approved Procedures and
Arrangements Manual specifies that a
tank washing machine must be moved
for the prewash of a tank from which a
Category A NLS or a solidifying NLS
has been unloaded, the number of

washing machine cycles specified in
Table 153.1120 must be completed at
each position to which the washing machine is moved.
(6) When the NLS is immiscible with
water or is a solidifying cargo, the
tank must be pumped out each time
enough tank washings collect in the
bottom of the tank for the pump to
gain suction, or the procedures in paragraphs (b)(3), (b)(4), and (b)(5) of this
section must be repeated two additional times with the tank pumped out
each time, for a total of three
washings.
(7) Items 12 through 14 in the Cargo
Record Book must be completed and, if
the prewash is for a Category A NLS,
verification that the procedures specified in the approved Procedures and Arrangements Manual were followed
shown by the Surveyor’s endorsement
in the Cargo Record Book.

TABLE 153.1120—NUMBER OF WASHING MACHINE CYCLES IN THE PREWASH PROCEDURE
Number of washing machine cycles
Column 1: Prewash
under § 153.1116 or for
a solidifying NLS under
§ 153.1108
Category A NLS ............................................................................................
Category B or C NLS ....................................................................................

[CGD 81–101, 52 FR 7785, Mar. 12, 1987, as
amended by CGD 81–101, 53 FR 28975, Aug. 1,
1988 and 54 FR 12629, Mar. 28, 1989]

§ 153.1122 Discharges of NLS residue
from tank washing other than a
prewash: Categories A, B, and C.
Tank washings that do not result
from a prewash and that contain Category A, B, or C NLS residues must be
discharged to a reception facility or
discharged to the sea under § 153.1126 or
§ 153.1128 except those tank washings
resulting from washing a tank that has
been cleaned following a ventilation
procedure in the approved Procedures
and Arrangements Manual.
§ 153.1124 Discharges of Category D
NLS residue.
NLS residue from Category D NLSs
must be discharged to a reception facility or discharged to the sea using the
following procedure:

Column 2: Prewashes
except those listed
under column 1

2
1

1
1/2

(a) Before discharge begins, drain or
flush the NLS residue in the tank’s piping systems into the tank.
(b) After draining or flushing, discharge the NLS residue to the sea in
accordance with § 153.1128 or transfer it
to a slop tank and discharge in accordance with § 153.1126.
§ 153.1126 Discharge of NLS residue
from a slop tank to the sea: Categories A, B, C, and D.
NLS residue in a slop tank may not
be discharged into the sea unless—
(a) The ship meets the conditions for
discharging the NLS residue from a
cargo tank in § 153.1128; and
(b) For Category B NLS residue
transferred to the slop tank under
§ 153.1119(b), the NLS is discharged—
(1) Through an NLS residue discharge
system with the flow recording equipment required in § 153.481(b)(2) operating; and

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Coast Guard, DOT

§ 153.1128

(2) At a rate maintained at or below
Q in the following:
For tank contents that are miscible

Q=

VKU1.4 L1.6
× 10 −5 m 3 /hr
N

For tank contents that are immiscible
Q=KU1.4 L1.6×10¥5 m3/hr
where:
Q=maximum permissible slops discharge rate
in cubic meters per hour.
V=volume of slops in the tank in cubic meters.
K=4.3, except K=6.45 if Q is distributed between two NLS residue discharge outlets
on opposite sides of the ship (see
§§ 153.470(c) and 153.481(b)).
U=ship’s speed in knots.
L=ship’s length in meters.
N=number of tanks containing Category B
NLS residue pumped into the slop tank.

§ 153.1128 Discharge of NLS residue
from a cargo tank to the sea: Categories A. B, C, and D.
The discharge of NLS residue to the
sea must be made with the ship at least
22.24 km (12 nautical miles) from the
nearest land, and must meet the following additional conditions:
(a) To discharge the following the
ship must be in water at least 25 m (76.2
ft) deep:
(1) Category B or C NLS residue diluted to less than 1 ppm of the NLS.
(2) Category B or C NLS residue resulting from washing a tank after the
following washing procedure has been
completed:
(i) If the tank is not required to be
prewashed under this part, the tank
must be washed following the procedures that apply to a prewash of a Category B NLS in § 153.1120 using one
washing machine cycle, and the tank
washings discharged to a reception facility or to the sea under § 153.1126 or
paragraph (a)(1), (c) or (d) of this section.
(ii) After the tank has been
prewashed or has been washed under
paragraph (a)(2)(i) of this section, the
tank must then be washed with one
cycle of the tank washing machine, and
the tank washings discharged to a reception facility or to the sea in accordance with § 153.1126 or paragraph (a)(1),
(c), or (d) of this section.

(b) To discharge a Category D NLS
residue to which 10 times its volume in
water is added and mixed, the ship
must be—
(1) If self-propelled, maintained at a
speed of at least 12.97 km/hr (7 knots);
and
(2) If not self-propelled, maintained
at a speed of at least 7.41 km/hr (4
knots).
(c) Each ship built before July 1, 1986
that discharges Category A, B or C
NLS residues before January 1, 1988
must be—
(1) In water at least 25 m (76.2 ft)
deep;
(2) If discharging the residue of a Category A NLS cargo, discharging only
residue created by washing the Category A NLS’s cargo tank after a
prewash;
(3) If discharging the residue of a Category B NLS cargo, discharging no
more than the larger of 1 m3 or 1/3000th
the volume of the Category B cargo
loaded;
(4) If discharging the residue of a Category C NLS cargo, discharging no
more than the larger of 3 m3 of or
1/1000th the volume of the Category C
cargo loaded;
(5) If self-propelled, maintained at a
speed of at least 12.97 km/hr (7 knots);
and
(6) If not self-propelled, maintained
at a speed of at least 7.41 km/hr (4
knots).
(d) To discharge Category A, B, C, or
D NLS residue other than as allowed
under paragraphs (a) through (c) of this
section, the ship must be—
(1) In water at least 25 m (76.2 ft)
deep;
(2) Discharging at a rate not exceeding that used for Qd in § 153.470;
(3) If self-propelled, maintained at
speed no less than the minimum specified in the approved Procedures and Arrangements Manual but at least 12.97
km/hr (7 knots);
(4) If not self-propelled, maintained
at a speed no less than the minimum
specified in the approved Procedures
and Arrangements Manual but at least
7.41 km/hr (4 knots);
(5) If discharging the residue of a Category A NLS cargo, discharging only

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§ 153.1130

46 CFR Ch. I (10–1–00 Edition)

residue created by washing the Category A NLS’s cargo tank after a
prewash;
(6) If discharging the residue of a Category B NLS cargo, discharging no
more than the larger of 1 m3 or 1/3000th
the volume of the Category B cargo
loaded;
(7) If discharging the residue of a Category C NLS cargo, discharging no
more than the larger of 3 m3 of or
1/1000th the volume of the Category C
cargo loaded;
(8) Discharging through an NLS residue discharge system meeting § 153.470.
[CGD 81–101, 52 FR 7785, Mar. 12, 1987, as
amended by CGD 81–101, 53 FR 28976, Aug. 1,
1988 and 54 FR 12629, Mar. 28, 1989]

§ 153.1130 Failure of slops discharge
recording equipment; operating
with, reporting failures, and replacing pollution equipment: Category
A, B, C, D.
(a) If equipment required in §§ 153.470
through 153.488 fails, the Coast Guard
Marine Inspection Office, Marine Safety Office, or Captain of the Port must
be notified within 24 hours after the
failure.
(b) No person shall replace a piece of
equipment
required
by
§§ 153.470
through 153.488 unless the replacement
is—
(1) Identical to the original equipment; or
(2) Allowed as an alternative under
§ 153.10.
(c) The following conditions apply
when discharge recording equipment
required under § 153.481(b)(2) fails:
(1) No NLS residue may be discharged
unless the approved Procedures and Arrangements Manual contains procedures for discharging with incapacitated discharge recording equipment
while meeting the discharge restrictions of § 153.1126(b) and these procedures are followed.
(2) The failure of the discharge recording equipment must be recorded in
the Cargo Record Book within 24 hours
after the failure.
(3) If the ship operates under a Certificate of Inspection, the failed discharge recording equipment must be
repaired or replaced within 60 days
after it fails, and the repair or replacement recorded in the Cargo Record

Book and reported to the Coast Guard
within 24 hours after it is completed.
§ 153.1132 Reporting spills and noncomplying discharges: Category A,
B, C, and D.
The following shall be reported following the procedures applying to oil
in 33 CFR 151.15 (c), (d), (g), (h):
(a) All discharges of the NLS that do
not meet the requirements of this part.
(b) All spills into the water.
MAINTENANCE
§ 153.1500 Venting
disks.

system

rupture

The master shall ensure that a relief
valve exposed to a cargo after the failure of a rupture disk or breaking pin is
cleaned and operates properly before
the next cargo is loaded into the tank.
§ 153.1502

Fixed ballast relocation.

No person may remove or relocate
fixed ballast unless:
(a) The change is approved by the
Commandant (G–MSO); or
(b) The ballast is temporarily moved
under the supervision of a Coast Guard
Marine Inspector for examination or
repair of the tankship.
[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 82–063b, 48 FR 4782, Feb. 3,
1983]

§ 153.1504 Inspection
of
personnel
emergency and safety equipment.
The master shall ensure that the personnel emergency and safety equipment required by § 153.214 is inspected
each 30 days and found to be in good
condition and operating properly.

Subpart D—Test and Calculation
Procedures for Determining
Stripping Quantity, Clingage
NLS Residue, and Total NLS
Residue
SOURCE: CGD 81–101, 52 FR 7788, Mar. 12,
1987, unless otherwise noted.

§ 153.1600 Equipment required for conducting the stripping quantity test.
The operator shall ensure the stripping quantity test is conducted with—

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Coast Guard, DOT

§ 153.1604

(a) Equipment that maintains a
backpressure of at least 100 kPa (1 atm)
(gauge) at the connection of the discharge line of the tank to be tested to
the cargo transfer hose, including, but
not limited to, piping whose discharge
is 10 m above the manifold or a constant pressure valve in the discharge
line and set at 100 kPa;
(b) A container for measuring the
volume of water remaining in the tank
to an accuracy of ± 5%;
(c) A squeegee or broom to collect
standing water on the tank floor;
(d) One or more containers for collecting and transferring water; and
(e) One of the following for transferring the water remaining in the tank
to the measuring container:
(1) A wet vacuum.
(2) A positive displacement pump.
(3) An eductor with an air/water separator in line.
§ 153.1602 Test procedure for determining the strippinq quantity.
(a) The stripping quantity of a tank
must be determined by testing the
tank under the procedures in paragraph (b) of this section unless the
Coast Guard agrees under the provisions of § 153.10 to accept the stripping
quantity, previously determined under
paragraph (b) of this section, of a tank
having similar geometry, internal
structure, and piping system.
(b) When testing a tank for stripping
quantity, the owner or operator of the
ship shall proceed as follows:
(1) Make arrangements with the Officer in Charge, Marine Inspection, for a
Coast Guard Marine Inspector to witness the stripping test.
(2) Clean and gas free the tanks to be
tested.
(3) Determine the least favorable values of list and trim for drainage within
the range allowed by the approved Procedures and Arrangements Manual.
(4) Maintain the ship’s list and trim
during the test to that determined
under paragraph (b)(3) of this section.
(5) Load the tank with enough water
so that unloading the water simulates
the final stages of unloading a full
tank of cargo.
(6) Pump out the water and strip the
tank using the procedures specified in

the approved Procedures and Arrangements Manual.
(7) After shutting the manifold valve,
open any cargo pump foot valve to
allow water trapped in the cargo pump
to drain into the tank.
(8) Open all valves in the piping system except the manifold valve and
allow the water to drain into the tank.
(9) Squeegee or sweep the water
drained under paragraphs (b)(7) and
(b)(8) of this section and any water
that stands in puddles on the tank
floor to the tank’s low point or sump
and collect in the container required
by § 153.1600(b) using the equipment required in § 153.1600(e).
(10) With the manifold valve still
closed, drain any water remaining in
the piping system on the ship’s side of
the cargo transfer manifold valve into
containers, and add this water to that
collected from the tank under paragraph (b)(9) of this section. Water collected from a cargo line serving a block
of tanks may be prorated between all
the tanks it serves if—
(i) The ship owner requests, under
the provisions of § 153.10, that the water
be prorated; and
(ii) The ship’s approved Procedures
and Arrangements Manual specifies
that no tank in the block be washed
until all the tanks in the block have
been discharged.
(c) Include any water that is trapped
in dead end pipe sections, either by—
(1) Draining the pipe sections and
adding the water to that collected in
the container under paragraphs (b)(9)
and (b)(10) of this section; or
(2) Adding an estimate of the water’s
volume to the sum calculated in paragraph (d) of this section using the
pipe’s dimensions, the ship’s list and
trim, and the geometry of the piping
system.
(d) Measure the volume of water collected in the container under paragraphs (b)(9), (b)(10), and (c)(1) of this
section and add to that volume the volume, if any, estimated under paragraph
(c)(2) of this section.
§ 153.1604 Determining the stripping
quantity from the test results.
(a) For a single test, the stripping
quantity is the volume of water calculated under § 153.1602(d).

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§ 153.1608

46 CFR Ch. I (10–1–00 Edition)

(b) If multiple tests are made on a
tank without modifications to the
tank, pumping system, or stripping
procedure between the tests, the stripping quantity must be taken as the average of the stripping quantities for all
of the tests.
(c) If multiple tests are made on a
tank with modifications to the tank,
pumping system, or stripping procedure between the tests, the stripping
quantity is the stripping quantity determined under paragraph (b) of this
section using only those tests performed after the last modification.

Qclingage=1.1×10¥4 Ad+1.5×10¥5 Aw+4.5×10¥4 L1/2
Ab

§ 153.1608 Calculation of total NLS residue and clingage NLS residue.
(a) The total NLS residue for each
tank is calculated by adding the stripping quantity and the clingage NLS
residue.
(b) The clingage NLS residue for each
tank is calculated using the following
formula:

When using the formula in this paragraph, areas that are inclined more
than 30° from the horizontal may be assumed to be vertical.

where:
Ab=Area of the tank bottom added to the
area in square meters of tank structural
components projected on a horizontal
surface
Ad=Area of the tank underdecks added to the
area in square meters of tank structural
components projected on a horizontal
surface
Aw=Area of the tank walls added to the area
in square meters of tank structural components projected on a vertical surface
L=Length of tank in meters from fore to aft
Qclingage=volume of clingage in cubic meters

NOTE: The Commandant (G–MSO) (tel
num;202–267–1217) has information that may
be useful in approximating surface areas of
typical structural members for the projected
area calculations under § 153.1608(b).

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D
D
A
A
III
D
D
B
D
B
A

Acetonitrile ..............................................
Acrylamide solution (50% or less) ..........

•Acrylic acid ............................................
Acrylonitrile .............................................

Adiponitrile ..............................................
Alachlor technical (90% or more) ...........
Alcohol (C6–C17) (secondary) poly(3–
6)ethoxylates.
Alcohol (C6–C17) (secondary) poly(7–
12)-ethoxylates.
•Alcohol(C12–C15)
poly(1–
3)ethoxylates, see Alcohol(C12–C15)
poly(1–6)ethoxylates.
•Alcohol(C12–C15)
poly(3–
11)ethoxylates, see Alcohol(C12–
or
poly(7–
C15)
poly(1–6)
19)ethoxylates.
Alcohol(C12–C15) poly(1–6)ethoxylates
Alcohol(C12–C15)
poly(7–
19)ethoxylates.
Alcohol(C12–C15) poly(20+)ethoxylates
Alkanes(C6–C9) (all isomers) ................
Alkane(C14–C17) sulfonic acid, sodium
salt solution (65% or less).
Alkaryl polyether (C9–C20) ....................
Alkyl acrylate-Vinyl pyridine copolymer
in Toluene.
Alkyl(C3–C4)benzenes (all isomers) ......
Alkyl(C5–C8)benzenes (all isomers) ......
•Alkylbenzene,
Alkylindane,
Alkylindene mixture (each C12–
C17).
Alkylbenzenesulfonic acid (greater than
4%).

Frm 00181

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Y:\SGML\190178T.XXX
P
P
P

A
A
A

S/P

P
P

B
C

C

P
P
P

P
P

P

S
S/P
P

S
S/P

S
S

C
C
B

A
B

B

c.

b.

a.

Acetic acid ..............................................
Acetic anhydride .....................................
Acetochlor ...............................................
Acetone cyanohydrin ..............................

S
S
P
S/P

Haz.

IMO
Annex II
pollution
category

Cargo name

III

III
II
II

III
III

III
III
III

II
III

III

III
III
II

III
II

II
II

III
II
II
II

d.

Cargo
containment
system

NR

4m
NR
NR

NR
4m

NR
4m
NR

NR
NR

NR

4m
NR
NR

4m
B/3

B/3
NR

4m
4m
NR
B/3

e.

Ventheight

Open

PV
Open
Open

Open
PV

Open
PV
Open

Open
Open

Open

PV
Open
Open

PV
PV

PV
Open

PV
PV
Open
PV

f.

Vent

Open

Restr
Open
Open

Open
Restr

Open
Restr
Open

Open
Open

Open

Restr
Open
Open

Restr
Closed

Restr
Closed

Restr
Restr
Open
Closed

g.

Gauge

h.

A, B

A
A
A

A, B
A

A
A
NSR

A
A

A

A
A, C
A

A
A

A
NSR

A
A
A
A

Fire protection
system
i.

Special requirements in 46 CFR Part 153

.440, .908(a) ................................................................

NA

I–D
I–D
NA

NA
NA

.409; (.440, .908(a)) 1 ...................................................
.409 ..............................................................................
.409 ..............................................................................
.409 ..............................................................................
.409 ..............................................................................

NA
I–D
NA

NA
NA

NA

I–D
NA
NA

I–D
I–D

I–D
NA

I–D
I–D
NA
I–D

j.

Electrical
hazard
class
and
group

None ............................................................................
.409 ..............................................................................
.440, .908(a) ................................................................

.409 ..............................................................................
.409, .440, .908(a) .......................................................

.409, .440, .908(a), (b) .................................................

.238(a), .409, .527, .554 ..............................................
.238(a), .409 .526, .527, .554 ......................................
.409 ..............................................................................
.238(a), .316, .336, .408, .525, .526, .527, .912(a)(2),
.933, .1002, .1004, .1020, .1035.
.409, 525, .526, .1020 .................................................
.409, .525(a), (c), (d), (e), .912(a)(1), .1002(a), .1004,
.1020.
.238(a), .409, .526, .912(a)(1), .933, .1002(a), .1004
.236(a), (c), (d), .316, .408, .525, .526, .527,
.912(a)(1), .1004, .1020.
.526 ..............................................................................
.238(a), .409, .440, .488, .908(a), (b) ..........................
.409 ..............................................................................

TABLE 1.—SUMMARY OF MINIMUM REQUIREMENTS

Coast Guard, DOT
Pt. 153, Table 1

181

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P
S/P
P
S/P
S/P
S
S
S
S
S

C
A
B
B
B
D
D
D
D
D

Alkylbenzenesulfonic acid, sodium salt
solution.
Alkyl(C7–C9) nitrates ..............................
Alkyl (C7-C12) phenol poly(4-12)
ethoxylate.
Allyl alcohol .............................................
Allyl chloride ...........................................
Aluminum chloride (30% or less), Hydrochloric acid (20% or less) solution.
2-(2-Aminoethoxy) ethanol .....................
Aminoethylethanolamine ........................
N-Aminoethylpiperazine ..........................
2-Amino-2-methyl-1-propanol (90% or
less).
Ammonia aqueous (28% or less), see
Ammonium hydroxide (28% or less
NH 3).
Ammonium bisulfite solution (70% or
less).
Ammonium hydroxide (28% or less
NH 3).
Ammonium nitrate solution (greater than
45% and less than 93%).
•Ammonium sulfide solution (45% or
less).
Ammonium thiocyanate (25% or less),
Ammonium thiosulfate (20% or less)
solution.
Ammonium thiosulfate solution (60% or
less).
•(commercial, iso-, n-, sec-) Amyl acetate, see Amyl acetate (all isomers).
Amyl acetate (all isomers) ......................
Aniline .....................................................
Anthracene oil (Coal tar fraction), see
Coal tar.
Aviation alkylates (C8 paraffins and isoparaffins, b. pt. 95–120 deg. C).
Barium long chain alkaryl sulfonate
(C11–C50).

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P

P
S/P

P
P

C
C

C
[B]

P

C

C

S
S/P

C

C
D

S
S/P

D

c.

b.

a.

Haz.

IMO
Annex II
pollution
category

Cargo name

Y:\SGML\190178T.XXX
III

III

III
II

III

III

II

II

III

III

III
III
III
III

II
II
III

II
III

III

d.

Cargo
containment
system

NR

4m

4m
B/3

NR

NR

B/3

NR

4m

4m

NR
NR
4m
NR

B/3
B/3
4m

NR
NR

NR

e.

Ventheight

Open

PV

PV
PV

Open

Open

PV

Open

PV

PV

Open
Open
PV
Open

PV
PV
PV

Open
Open

Open

f.

Vent

Open

Restr

Restr
Closed

Open

Open

Closed

Open

Restr

Restr

Open
Open
Restr
Open

Closed
Closed
Restr

Open
Open

Open

g.

Gauge

A

B

A
A

NSR

NSR

A, C

NSR

A, B, C

No

A, C, D
A
A
A

A
A
NSR

A, B
A

NSR

h.

Fire protection
system

(c), .409 ..........................................................
(b), (c), (g) ......................................................
(c), .409, .526 .................................................
(b), (c), (g) ......................................................

.409; (.440, .903,

.908(a))1

..........................................

.409 ..............................................................................

.409 ..............................................................................
.316, .408, .525, .526, .933, .1020 ..............................

.440, .908(b) ................................................................

.236(a), (b), (c), (g), .316, .408, .525, .526, .527,
.933, .1002, .1020.
None ............................................................................

.238(d), .252, .336, .409, .554(a), (b) ..........................

.236(b), (c), (f), .526, .527 ...........................................

.238(e), .933, .1002 .....................................................

.236(b),
.236(a),
.236(b),
.236(a),

.316, .408, .525, .526, .527, .933, .1020 .....................
.316, .408, .525, .526, .527, .1020 ..............................
.252, .526, .527, .554, .557, .933, .1045, .1052 .........

.409, .560, .1002 ..........................................................
.409, .440, .488 1, .908 (a), (b) ....................................

.440, .903, .908(a), (b) .................................................

i.

Special requirements in 46 CFR Part 153

TABLE 1.—SUMMARY OF MINIMUM REQUIREMENTS—Continued

NA

I–C

I–D
I–D

NA

NA

I–D

NA

I–D

NA

NA
NA
I–C
I–D

I–C
I–D
I–B

NA
I–D

NA

j.

Electrical
hazard
class
and
group

Pt. 153, Table 1
46 CFR Ch. I (10–1–00 Edition)

182

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n-Butyl ether ...........................................
Butyl heptyl ketone .................................
iso-Butyl isobutyrate, see Butyl butyrate (all isomers).
Butyl methacrylate ..................................
Butyl methacrylate, Decyl methacrylate,
Cetyl-Eicosyl methacrylate mixture.
n–Butyl propionate ..................................
Butyl toluene ...........................................
•iso-Butyraldehyde, see Butyraldehyde
(all isomers).
•n-Butyraldehyde, see Butyraldehyde
(all isomers).
Butyraldehyde (all isomers) ....................
Butyric acid .............................................
Calcium
alkyl(C9)phenol
sulfide,
polyolefin phosphorosulfide mixture.
•Calcium alkyl salicylate, see Calcium
long chain alkyl salicylate (C13+).
•Calcium bromide, Zinc bromide solution, see Drilling brine (containing
Zinc salts).
Calcium hypochlorite solution (15% or
less).

Barium long chain alkyl (C8–C14)
phenate sulfide.
Benzene hydrocarbon mixtures2 (having
10% Benzene or more).
Benzenesulfonyl chloride ........................
Benzene, Toluene, Xylene mixtures2
(having 10% Benzene or more).
Benzyl acetate ........................................
Benzyl alcohol ........................................
Benzyl chloride .......................................
Bromochloromethane .............................
Butene oligomer .....................................
(iso-, n-) Butyl acetate, see Butyl acetate (all isomers).
Butyl acetate (all isomers) ......................
(iso-, n-) Butyl acrylate, see Butyl acrylate (all isomers).
Butyl acrylate (all isomers) .....................
Butylamine (all isomers) .........................
Butylbenzene (all isomers) .....................
Butyl benzyl phthalate ............................
n-Butyl butyrate, see Butyl butyrate (all
isomers).
Butyl butyrate (all isomers) .....................
1,2-Butylene oxide ..................................
B
C

Fmt 8010

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Y:\SGML\190178T.XXX
C

C
D
A

S/P

S/P
S
P

P
P

P
S/P

B
C
A
A

C
@A

S/P
S/P
P
P

C

S
S

P

C
C
B
D
B

D
D

P
P
S/P
S
P

D
@C2

S/P
P

S
S/P

C2

C
[C]

P
S/P

[A]

II

III

III
III
II

III
II

III
III

III
III

III
III

II
II
III
II

III

III
III
II
III
III

III
III

III

NR

4m

4m
4m
NR

4m
NR

4m
4m

B/3
NR

4m
4m

4m
B/3
4m
NR

4m

NR
NR
B/3
4m
NR

4m
B/3

B/3

PV

PV
PV
Open

PV
Open

PV
PV

PV
Open

PV
PV

PV
PV
PV
Open

PV

Open
Open
PV
PV
Open

PV
PV

PV

Open

Restr

Restr
Restr
Open

Restr
Open

Restr
Restr

Restr
Open

Restr
Restr

Restr
Restr
Restr
Open

Restr

Open
Open
Closed
Restr
Open

Restr
Closed

Closed

Open

NSR

A
A
A, B

A
A

A, D
A, C, D

A, D
A

A
A, C

A
A
A
A

A

A
A
A, B
No
A

A, B, D
B

A,B

A

.236(a), (b) ...................................................................

.409, .526 .....................................................................
.238(a), .554 ................................................................
.409 ..............................................................................

.409 ..............................................................................
.409 ..............................................................................

.409, .526, .912(a)(1), .1002(a), (b), .1004 .................
.912(a)(1), .1002(a), (b), .1004 ....................................

.409 ..............................................................................
.372, .409, .440, .500, .526, .530(a), (c), (e)–(g), (m)–
(o), .1010, .1011.
.409, .500, .525, .526, .1020 .......................................
None ............................................................................

.409, .526, .912(a)(1), .1002(a), (b), .1004 .................
.236(b), (c), .316, .408, .525, .526, .527, .1020 ..........
.409 ..............................................................................
.409 ..............................................................................

.409 ..............................................................................

None ............................................................................
None ............................................................................
.316, .408, .525, .526, .527, .912(a)(2), .1004, .1020
.236 (a), (b), (d), .526, .933 .........................................
.409 ..............................................................................

.236(a), (b), (c), (g), .409, .526 ....................................
.316, .409 .440, .526, .908(b), .1060 ..........................

.316, .409, .440, .526, .908(b), .933, .1060 ................

.409 ..............................................................................

NA

I–C
I–D
NA

I–D
I–D

I–D
I–D

I–C
NA

I–D
I–B

I–D7
I–D
I–D
I–D

I–D

I–D
I–D
I–D
NA
NA

I–D
I–D

I–D

NA

Coast Guard, DOT
Pt. 153, Table 1

183

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o-Chlorotoluene ......................................
m-Chlorotoluene .....................................
p-Chlorotoluene ......................................
Chlorotoluenes (mixed isomers) .............
Coal tar ...................................................
Coal tar naphtha solvent ........................
Coal tar pitch (molten) ............................
Cobalt naphthenate in solvent naphtha
Coconut oil, fatty acid .............................
Cottonseed oil, fatty acid ........................
Creosote (coal tar) ..................................
Creosote (wood) .....................................
Cresols (all isomers) ...............................

A
B
B
A
A
B
D
A
C
[C]
A
A
A

C
C

2- or 3-Chloropropionic acid ...................
Chlorosulfonic acid .................................

B
A
B

B

S/P
S/P
S/P

C

S/P
S/P
S/P
S/P
S/P
S/P
S
S/P
P
P
S/P
S/P
S/P

S/P
S/P

S/P

S/P
S
S
S
S
P
S/P
S/P
S/P
S
P

P

B

B
D
D
D
III
A
C
B
B
D
C

c.
S/P

b.

a.

Calcium hypochlorite solution (more
than 15%).
Calcium long chain alkyl salicylate
(C13+).
Camphor oil ............................................
Carbolic oil ..............................................
Carbon disulfide ......................................

Carbon tetrachloride ...............................
Cashew nut shell oil (untreated) ............
•Caustic potash solution ........................
Caustic soda solution .............................
Cetyl-Eicosyl methacrylate mixture ........
Chlorinated paraffins (C10–C13) ............
Chloroacetic acid (80% or less) .............
•Chlorobenzene ......................................
Chloroform ..............................................
(crude) Chlorohydrins .............................
•4-Chloro-2-methylphenoxyacetic acid,
dimethylamine salt solution.
•o-Chloronitrobenzene

Haz.

IMO
Annex II
pollution
category

Cargo name

III
III
II
II
II
III
III
II
III
III
II
II
II

III
I

II

III
III
III
III
III
I
II
III
III
II
III

II
II
II

III

III

d.

Cargo
containment
system

4m
4m
4m
4m
4m
4m
4m
4m
NR
NR
NR
NR
NR

NR
B/3

B/3

B/3
4m
NR
NR
NR
NR
B/3
4m
B/3
B/3
NR

4m
B/3
B/3

NR

4m

e.

Ventheight

f.

PV
PV
PV
PV
PV
PV
PV
PV
Open
Open
Open
Open
Open

Open
PV

PV

PV
PV
Open
Open
Open
Open
PV
PV
PV
PV
Open

PV
PV
PV

Open

PV

Vent

Restr
Restr
Restr
Restr
Restr
Restr
Restr
Restr
Open
Open
Open
Open
Open

Open
Closed

Closed

Closed
Restr
Open
Open
Open
Open
Closed
Restr
Restr
Closed
Open

Restr
Closed
Closed

Open

Restr

g.

Gauge

A,
A,
A,
A,
B,
A,
B,
A,
A
A
A,
A,
A,

Y:\SGML\190178T.XXX
C
C
C
C

B, D
B, D
B

B,
B,
B,
B,
D
D
D
D

A, B, C,
D
A
NSR

NSR
A, B
NSR
NSR
A, C, D
A
NSR
A, B
NSR
A
NSR

A, B
A
C

A, B

NSR

h.

Fire protection
system

.316, .336, .408, .440, .525, .526, .908(a), (b), .933,
.1020.
.238(a), (b), .440, .554, .908(a), (b) ............................
.408, .525, .526, .527, .554, .555, .602, .933, .1000,
.1020, .1045.
.409, .526 .....................................................................
.409, .526 .....................................................................
.409, .440, .526, .908(b) ..............................................
.409, .526 .....................................................................
.409, .933, .1060 ..........................................................
.409, .526, .933, .1060 ................................................
.252, .409, .933, .1060 ................................................
.409, .526 .....................................................................
.440, .903, .908(a), (b) .................................................
.440, .903, .908(a) .......................................................
.409 ..............................................................................
.409 ..............................................................................
.409, .440, .908(b) .......................................................

I–D
I–D
I–D
I–D
I–D
I–D
I–D
I–D
NA
NA
I–D
NA
I–D

NA
I–B

NA

NA
NA
NA
NA
NA
NA
I–D
I–D
NA
I–D
NA

I–D
NA
I–A

NA

(.440, .903, .908(a))1 ...................................................
.409 ..............................................................................
.408, .440, .525, .526, .908(b), .933, .1020 ................
.236(c), .252, .408, .500, .515, .520, .525, .526, .527,
.1020, .1040.
.316, .409, .525, .526, .527, .1020 ..............................
.526, .933 .....................................................................
.236(a), (c), (g), .933 ...................................................
.236(a), (c), (g), .933 ...................................................
.912(a)(1), .1002(a), (b), .1004 ....................................
.408 ..............................................................................
.238(e), .408, .440, .554, .908(b) ................................
.409, .526 .....................................................................
.409, .525, .526, .527, .1020 .......................................
.408, .525, .526, .1020 ................................................
.236(a), (b), (c), (g) ......................................................

NA

j.

Electrical
hazard
class
and
group

.236(a), (b), .409 ..........................................................

i.

Special requirements in 46 CFR Part 153

TABLE 1.—SUMMARY OF MINIMUM REQUIREMENTS—Continued

Pt. 153, Table 1
46 CFR Ch. I (10–1–00 Edition)

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C

Dibutylamine ...........................................

Y:\SGML\190178T.XXX

Dichloromethane .....................................
2,4-Dichlorophenol4 ................................

D
A

D
B
B
C

C
C
D
D
B
C
B
C
B
C
@C
@B
C
B
B
A
B
A
C

Cycloheptane ..........................................
Cyclohexane ...........................................
Cyclohexanone .......................................
•Cyclohexanone, Cyclohexanol mixture
Cyclohexyl acetate .................................
Cyclohexylamine .....................................
1,3-Cyclopentadiene dimer (molten) ......
Cyclopentane ..........................................
Cyclopentene ..........................................
p-Cymene ...............................................
iso-Decaldehyde .....................................
n-Decaldehyde ........................................
Decanoic acid .........................................
Decene ...................................................
Decyl acetate ..........................................
(iso-, n-) Decyl acrylate ..........................
Decyl alcohol (all isomers) .....................
Decyloxytetrahydro-thiophene dioxide ...
Dibromomethane ....................................

•1,1-Dichloroethane ................................
2,2’-Dichloroethyl ether ...........................
1,6–Dichlorohexane ................................
2,2’-Dichloroisopropyl ether ....................

S/P

A

B
A
B
B

S/P

A

Dibutyl hydrogen phosphonate ...............
•ortho-Dibutyl phthalate ..........................
•Dichlorobenzene (all isomers)1 .............
3,4-Dichloro-1-butene .............................

S/P

A

S
S/P

S
S/P
S/P
S/P

P
P
S/P
S/P

S/P

P
P
S
S
P
S/P
P
P
P
P
P
P
P
P
P
S/P
P
S/P
S/P

S/P

A

Cresols with less than 5% Phenol, see
Cresols (all isomers)
Cresols with 5% or more Phenol, see
Phenol
Cresylate spent caustic (mixtures of
Cresols and Caustic soda solutions).
Cresylic acid, dephenolized ....................
Cresylic acid, sodium salt solution, see
Cresylate spent caustic.
Crotonaldehyde ......................................
Cumene
(isopropylbenzene),
see
Propylbenzene (all isomers).
•1,5,9-Cyclododecatriene .......................

III
II

III
II
II
II

III
II
II
III

III

III
III
III
III
III
III
II
III
III
III
III
III
III
III
III
II
III
II
II

I

II

II

II

4m
4m

4m
4m
4m
B/3

NR
NR
4m
B/3

4m

4m
4m
4m
4m
4m
4m
4m
4m
4m
4m
NR
NR
NR
4m
NR
NR
NR
B/3
4m

4m

B/3

NR

NR

PV
PV

PV
PV
PV
PV

Open
Open
PV
PV

PV

PV
PV
PV
PV
PV
PV
PV
PV
PV
PV
Open
Open
Open
PV
Open
Open
Open
PV
PV

PV

PV

Open

Open

Restr
Restr

Restr
Restr
Restr
Restr

Open
Open
Restr
Closed

Restr

Restr
Restr
Restr
Restr
Restr
Restr
Restr
Restr
Restr
Restr
Open
Open
Open
Restr
Open
Open
Open
Restr
Restr

Restr

Restr

Open

Open

A, B
A
A, B
A, B, C,
D
NSR
A, B, C,
D

A, B, C,
D
A
A
A, B, D
A, B, C

A
A
A
A
A
A, C, D
A
A
A
A
A
A
A
A
A
A, C, D
A
A
No

A

A

A, B

NSR

.526 ..............................................................................
.236(a), (b), (c), (g), .409, .440, .500, .501, .526,
.908(b), .933.

.409, .440, .908(a) .......................................................
.409 ..............................................................................
.236(a), (b), .409, .440, .4881, .526, .908(a), (b)1 .......
.316, .409, .525 (a), (c), (d), (e), .526, .527, .933,
.1020.
.409, .526, .527 ............................................................
.236(a), (b), .409, .526 .................................................
.409, .526 .....................................................................
.236(a), (b), .316, .408(a), .440, .525, .526, .1020 .....

.236(b), (c), .408, .526, .912(a)(1), .1002(a), (b),
.1004.
.409 ..............................................................................
.409, .440, .908(b) .......................................................
.236(a), (b), .409, .526 .................................................
.236(a), (b), .526 ..........................................................
.409 ..............................................................................
.236(a), (b), (c), (g), .409, .526 ....................................
.409, .440, .488, .908(a), (b) .......................................
.409 ..............................................................................
.409 ..............................................................................
.409 ..............................................................................
None ............................................................................
None ............................................................................
.440, .903, .908(a), (b) .................................................
.409 ..............................................................................
.409 ..............................................................................
.236(a), (b), (c), .409, .912(a)(1), .1002(a), (b), .1004
.409, .440, .908(b) .......................................................
.409, .526 .....................................................................
.236 (a), (b), (d), .408, .525 (a), (c), (d), (e), .526,
.933, .1020.
.236(b), (c), .409, .526 .................................................

.316, .409, .525, .526, .527, .1020 ..............................

.409 ..............................................................................

.236(a), (c), .409, .933 .................................................

I–D
I–D

I–D
I–C
NA
I–D

NA
I–D
I–D
I–D

I–C

I–D
I–D
I–D
I–D
I–D
I–D
I–C
I–D
I–D
I–D
I–C
I–C
NA
I–D
NA
I–D
I–D
NA
NA

I–D

I–C

NA

NA

Coast Guard, DOT
Pt. 153, Table 1

185

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S/P
S/P
S/P

S/P
S/P
S
S/P
S/P

A
A
A

C
C
D
B
B

2,4-Dichlorophenoxyacetic
acid,
diethanolamine salt solution.
2,4-Dichlorophenoxyacetic
acid,
dimethylamine salt solution.
2,4-Dichlorophenoxyacetic acid, triisopropanolamine salt solution.
•1,1-, 1,2-, or 1,3-Dichloropropane, see
individual entries.
1,1-Dichloropropane ...............................
1,2-Dichloropropane ...............................
1,3-Dichloropropane ...............................
1,3-Dichloropropene ...............................
Dichloropropene, Dichloropropane mixtures.
•2,2-Dichloropropionic acid ....................
Diethanolamine .......................................
Diethylamine ...........................................
Diethylaminoethanol,
see
Diethylethanolamine
•2,6-Diethylaniline ..................................
Diethylbenzene .......................................
Diethylenetriamine ..................................
Diethylethanolamine ...............................
Diethyl ether, see Ethyl ether
Di-(2-ethylhexyl) phosphoric acid ...........

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@C
B
B
C
C
A
D

Diisobutylcarbinol ....................................
Diisobutylene ..........................................
Diisobutyl phthalate ................................
Diisopropanolamine ................................
Diisopropylamine ....................................
Diisopropylbenzene (all isomers) ...........
N,N-Dimethylacetamide ..........................

P
P
P
S/P
S/P
P
S

P
S/P
P
P
P
S/P

S/P

C
C
B
B
B
B
C

S/P
P
S
S/P

C
A
D
C

Diethyl phthalate .....................................
Diethyl sulfate .........................................
Diglycidyl ether of Bisphenol A ..............
Diglycidyl ether of Bisphenol F ...............
Di-n-hexyl adipate ...................................
Diisobutylamine ......................................

S
S
S/P

D
D
C

c.

b.

a.

Haz.

IMO
Annex II
pollution
category

Cargo name

III
III
III
III
II
II
III

III
II
III
III
III
II

III

III
III
III
III

III
III
III

II
II
II
II
II

III

III

III

d.

Cargo
containment
system

NR
4m
NR
NR
B/3
NR
B/3

NR
4m
NR
NR
NR
4m

NR

NR
4m
NR
4m

4m
NR
B/3

B/3
B/3
B/3
B/3
B/3

NR

NR

NR

e.

Ventheight

Open
PV
Open
Open
PV
Open
PV

Open
PV
Open
Open
Open
PV

Open

Open
PV
Open
PV

PV
Open
PV

PV
PV
PV
PV
PV

Open

Open

Open

f.

Vent

Open
Restr
Open
Open
Closed
Open
Restr

Open
Closed
Open
Open
Open
Restr

Open

Open
Restr
Open
Restr

Restr
Open
Restr

Restr
Restr
Restr
Closed
Closed

Open

Open

Open

g.

Gauge

B
B
B
B
B, C,
D

A, B, C,
D
A
A, D
A
A
A
A, B, C,
D
A
A
A
A
A
A
B

B, C, D
A
A
A, C

A
A
A

A,
A,
A,
A,
A,

NSR

NSR

NSR

h.

Fire protection
system

.525,
.525,
.525,
.336,
.336,

.526,
.526,
.526,
.408,
.408,

.1020 ................................................
.1020 ................................................
.1020 ................................................
.525, .526, .527, .1020 .....................
.526, .527 .........................................

None ............................................................................
.236(a), (c), (d), .409, .526 ..........................................
.409, .440, .908(a) .......................................................
.409, .440, .908(a) .......................................................
.409 ..............................................................................
.236(a), (b), (c), (g), .409, .525(a), (c), (d), (e), .526,
.1020.
None ............................................................................
.409 ..............................................................................
.409, .440, .908(a) .......................................................
.236(b), (c), .440, .908(a), (b) ......................................
.236(b), (c), .408, .525, .526, .527, .1020 ...................
.409 ..............................................................................
.236(b), .316, .525, .526, .527, .1020 ..........................

.236(b), (c) ...................................................................

.236(b), .409, .440, .908(b) ..........................................
.409 ..............................................................................
.236(b), (c) ...................................................................
.236(a), (b), (c), (g), .409, .526 ....................................

.238(e), .266, .500, .501, .554, .933 ............................
.236(b), (c) ...................................................................
.236(a), (b), (c), (g), .409, .525, .526, .527, .1020 ......

.409,
.409,
.409,
.316,
.316,

.236(a), (b), (c), (g), .409 ............................................

.236(a), (b), (c), (g), .409 ............................................

.236(a), (b), (c), (g), .409 ............................................

i.

Special requirements in 46 CFR Part 153

TABLE 1.—SUMMARY OF MINIMUM REQUIREMENTS—Continued

I–D
I–D
I–D
I–D
I–C
I–D
I–D

I–D
I–D
NA
NA
NA
I–C

I–D

NA
I–D
NA
I–C

NA
NA
I–C

I–D
I–D
I–D
I–D
I–D

NA

NA

NA

j.

Electrical
hazard
class
and
group

Pt. 153, Table 1
46 CFR Ch. I (10–1–00 Edition)

186

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Diphenylol propane-epichlorohydrin resins.
Di-n-propylamine ....................................
Dodecanol ...............................................
Dodecene (all isomers) ..........................
Dodecyl alcohol, see Dodecanol
•Dodecylamine, Tetradecylamine mixture.
Dodecyldimethylamine,
Tetradecyldimethylamine mixture.
Dodecyl diphenyl ether disulfonate solution.
Dodecyl hydroxypropyl sulfide ................
Dodecyl methacrylate .............................
Dodecyl-Pentadecyl methacrylate mixture.
Dodecyl phenol .......................................

Dimethylethanolamine ............................
Dimethylformamide .................................
Dimethyl glutarate ...................................
•Dimethyl hydrogen phosphite ...............
Dimethyl naphthalene sulfonic acid, sodium salt solution.
Dimethyloctanoic acid .............................
Dimethyl phthalate ..................................
Dimethyl succinate .................................
Dinitrotoluene (molten) ...........................
1,4-Dioxane ............................................
Dipentene ...............................................
Diphenyl ..................................................
Diphenylamines, alkylated ......................
Diphenylamine, reaction product with
2,2,4–Trimethylpentene.
Diphenyl, Diphenyl ether mixtures .........
Diphenyl ether ........................................
Diphenyl ether, Biphenyl phenyl ether
mixture.
Diphenylmethane diisocyanate6 .............

N,N-Dimethylacetamide solution (40%
or less).
Dimethyl adipate .....................................
Dimethylamine solution (45% or less) ....
Dimethylamine solution (over 45% but
not over 55%).
Dimethylamine solution (over 55% but
not over 65%).
2,6-Dimethylaniline .................................
N,N-Dimethylcyclohexylamine ................

III

Sfmt 8010
II
II

S/P
S/P
S/P
P
S
S
P

A
A
A
[A]
III
III
A

Y:\SGML\190178T.XXX
I

II
III
III

II

III
III
III

S/P
P
P

C
B
B

III

P

II

I
III
III

III
III
III
II
II
III
I
II
I

III
III
III
III
III

III
II

II

III
III
II

B

S/P

P
P
P

A
A
A
B

P
P
P
S/P
S
P
P
P
S/P

[C]
C

C
C
C
A
D
C
A
A
A

S/P
S/P

C

S
S
P
S/P
P

S/P

B
C
C

D
D
C
B
[A]

S
P
S/P
S/P

D

NR

NR
NR
NR

NR

NR

4m

4m
NR
NR

NR

B/3

NR
NR
NR

NR
NR
NR
B/3
B/3
4m
NR
NR
NR

4m
4m
NR
4m
NR

NR
B/3

B/3

NR
B/3
B/3

B/3

PV

Open

Open
Open
Open

Open

Open

PV

PV
Open
Open

Open

PV

Open
Open
Open

Open
Open
Open
PV
PV
PV
Open
Open
Open

PV
PV
Open
PV
Open

Open
PV

PV

Open
PV
PV

Restr

Open

Open
Open
Open

Open

Open

Restr

Restr
Open
Open

Open

Closed

Open
Open
Open

Open
Open
Open
Closed
Closed
Restr
Open
Open
Open

Restr
Restr
Open
Restr
Open

Open
Restr

Closed

Open
Restr
Closed

B

A

A
A, C
A, C, D

NSR

B, C, D

A, D

A
A
A

A, B, C6,
D
A, B

B
A
A, B

A
A
A
A
A
A
B
A
A

A, D
A, D
A
A, D
NSR

B, C, D
A, C

A, C, D

A
A, C, D
A, C, D

.236(b), .316, .526 .......................................................

.408 ..............................................................................

.409 ..............................................................................
.236(b), (c), .912(a)(1), .1004 ......................................
.912(a)(1), .1002(a), (b), .1004 ....................................

.409 ..............................................................................

.236(b), .409 ................................................................

.236(b), (c), .409 .526 .................................................

.236(b), (c), .409, .525, .526, .1020 ............................
.409, .440, .488, .908(a), (b) .......................................
.409 ..............................................................................

.236(a), (b), .316, .409, .440, .500, .501, .525, .526,
.602, .908(a), .1000, .1020.
.409, .440, .908(a) .......................................................

.408 ..............................................................................
.409 ..............................................................................
.409 ..............................................................................

.440, .903, .908(b) .......................................................
None ............................................................................
.440, .908(b) ................................................................
.316, .408, .525, .526, .527, .1003, .1020, ..................
.408, .525, .526, .1020 ................................................
.409 ..............................................................................
.408 ..............................................................................
.409 ..............................................................................
.408 ..............................................................................

.409, .440, .908(b) .......................................................
.236(a), (b), (c), (g), .409 .525, .526, .527, .1020 .......
.236(a), (b), (c), (g), .316, .408, .525, .526, .527,
.1020.
.236(a), (b), (c), (g), .316, .372, .408, .525, .526,
.527, .1020.
.236(b), .409, .440, .908(b) ..........................................
.236(a), (b), (c), (g), .316, .409, .525, .526, .527,
.1020.
.236(b), (c), .409, .526 .................................................
.236(b), .409, .526 .......................................................
None ............................................................................
.526 ..............................................................................
.409 ..............................................................................

I–D

NA
I–D
NA

NA

NA

NA

I–C
I–D
I–D

NA

NA

I–D
I–D
NA

I–D
I–D
NA
I–C
I–C
I–D
I–D
NA
NA

I–C
I–D
NA
NA
NA

I–D
NA

I–C

NA
I–C
I–C

I–D

Coast Guard, DOT
Pt. 153, Table 1

187

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P
S

C
B
C
C
C
D
C
D
C
B
B
C
C

C
D

Ethyl amyl ketone ...................................
Ethylbenzene ..........................................
N-Ethylbutylamine ...................................

Ethyl butyrate ..........................................
Ethylcyclohexane ....................................
N–Ethylcyclohexylamine .........................
Ethylene chlorohydrin .............................
Ethylene cyanohydrin .............................
Ethylenediamine .....................................
Ethylene dibromide .................................
Ethylene dichloride .................................
Ethylene glycol butyl ether acetate ........
Ethylene glycol diacetate ........................
Ethylene glycol ethyl ether acetate, see
2-Ethoxyethyl acetate
Ethylene glycol methyl ether acetate .....
Ethylene glycol monoalkyl ether .............
Including:
2-Ethoxyethanol
Ethylene glycol butyl ether
Ethylene glycol tert-butyl ether
Ethylene glycol ethyl ether
Ethylene glycol methyl ether
Ethylene glycol n-propyl ether
Ethylene glycol isopropyl ether
Ethylene glycol monoalkyl ethers ...........
Ethylene glycol propyl ether, see Ethylene glycol monoalkyl ethers.
Ethylene oxide (30% or less), Propylene
oxide mixture.
Ethyl ether ..............................................

Y:\SGML\190178T.XXX
S/P
S

C

S

P
P
S/P

P
S/P
S
P
S/P
S/P
S/P

III

D

P
P
S
S/P
S
S/P
S/P
S/P
P
P

B
A
D
C
A
C
C

•Drilling brine (containing Zinc salts) .....
Epichlorohydrin .......................................
Ethanolamine ..........................................
2-Ethoxyethyl acetate .............................
Ethyl acrylate ..........................................
Ethylamine ..............................................
Ethylamine solution (72% or less) ..........

c.

b.

a.

Haz.

IMO
Annex II
pollution
category

Cargo name

II

II

III

III
III

III
III
III
II
III
II
II
II
III
III

III
III
III

III
II
III
III
II
II
II

d.

Cargo
containment
system

4m

B/3

4m

NR
4m

4m
4m
4m
B/3
NR
4m
B/3
4m
NR
NR

4m
4m
4m

NR
B/3
NR
4m
4m
B/3
B/3

e.

Ventheight

PV

PV

PV

Open
PV

PV
PV
PV
PV
Open
PV
PV
PV
Open
Open

PV
PV
PV

Open
PV
Open
PV
PV
PV
PV

f.

Vent

Closed

Closed

Restr

Open
Restr

Restr
Restr
Restr
Closed
Open
Restr
Closed
Restr
Open
Open

Restr
Restr
Restr

Open
Closed
Open
Restr
Restr
Closed
Closed

g.

Gauge

A

A, C

A

A
A

A
A
A, C
A, D
A
A
NSR
A, B
A
A

A
A
A

NSR
A
A
A
A
C, D
A, C

h.

Fire protection
system

.252, .372, .408, .440, .500, .525, .526, .530, .1010,
.1011, .1020.
.236(g), .252, .372, .408, .440, .500, .515, .526, .527

.409 ..............................................................................

None ............................................................................
.409 ..............................................................................

.409 ..............................................................................
.316, .408, .525, .526, .527, .1020 ..............................
.236(b), (c), .526 ..........................................................
.409 ..............................................................................
.409, .526, .527, .912(a)(1), .1002(a), (b), .1004 ........
.236(b), (c), .252, .372, .409, .525, .526, .527, .1020
.236(a), (b), (c), (g), .372, .408, .525(a), (c), (d), (e),
.526, .527, .1020.
.409 ..............................................................................
.409 ..............................................................................
.236(a), (b), (c), (g), .409, .525(a), (c), (d), (e), .526,
.1020.
.409 ..............................................................................
.409 ..............................................................................
.236(a), (b), (c), (g), .409, .526 ....................................
.316, .408, .525, .526, .527, .933, .1020 .....................
None ............................................................................
.236(b), (c), .409, .440, .526, .908(b) ..........................
.408, .440, .525, .526, .527, .908(b), .1020 ................
.236(b), .408, .526 .......................................................
None ............................................................................
None ............................................................................

i.

Special requirements in 46 CFR Part 153

TABLE 1.—SUMMARY OF MINIMUM REQUIREMENTS—Continued

I–C

I–B

I–C

I–C
I–C

I–D
I–D
I–C
I–D
NA
I–D
NA
I–D
I–C
I–D

I–D
I–D
I–C

NA
I–C
I–D
I–C
I–D
I–D
I–D

j.

Electrical
hazard
class
and
group

Pt. 153, Table 1
46 CFR Ch. I (10–1–00 Edition)

188

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C
B
D
B

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C

Isoprene ..................................................

Y:\SGML\190178T.XXX
S/P

P
P
S
S/P

S/P

B

•2-Hydroxy-4-(methylthio)butanoic acid
Icosa (oxypropane-2,3-diyl)s ..................
Isophorone diamine ................................
Isophorone diisocyanate6 .......................

S/P

C

S/P
P
S

C
C
D

P
P
P
P
P
S/P
S/P
P
P
P
S
S/P

S/P
S
P

C
D
B

B
C
C
C
B
C
C
C
C
B
D
C

S
S/P
S/P
P
S/P
S/P
S/P
S/P

D
A
A
B
C
C
C
#

Ethyl methacrylate ..................................
Ethylphenol .............................................
2-Ethyl-3-propylacrolein ..........................
Ethyl toluene ...........................................
Ferric chloride solutions .........................
Ferric nitrate, Nitric acid solution ............
Fluorosilicic acid (30% or less) ..............
Formaldehyde (50% or more), Methanol
mixtures.
Formaldehyde solution (37% to 50%) ....
Formic acid .............................................
Fumaric adduct of rosin, water dispersion.
Furfural ...................................................
Furfuryl alcohol .......................................
Glutaraldehyde solution (50% or less) ...
Glycidyl ester of C10 Trialkyl acetic
acid, see Glycidyl ester of Tridecyl
acetic acid.
Glycidyl ester of Tridecyl acetic acid ......
Heptane (all isomers) .............................
Heptanol (all isomers) ............................
Heptene (all isomers) .............................
Heptyl acetate .........................................
Hexamethylenediamine solution .............
Hexamethyleneimine ..............................
Hexane (all isomers) ..............................
Hexene (all isomers) ..............................
Hexyl acetate ..........................................
Hydrochloric acid ....................................
Hydrogen peroxide solutions (over 8%
but not over 60%).
Hydrogen peroxide solutions (over 60%
but not over 70%).
2-Hydroxyethyl acrylate ..........................

P
P
S/P
S/P
P
S/P

C
@C
B
B
C
B

•Ethyl-3-ethoxypropionate ......................
2-Ethylhexanol ........................................
2-Ethylhexyl acrylate ..............................
2-Ethylhexylamine ..................................
Ethyl hexyl phthalate ..............................
Ethylidene norbornene ...........................

III

III
III
III
II

II

II

III
III
III
III
III
III
II
III
III
III
III
III

III
III
III

III
III
III

III
III
III
III
III
II
III
III

III
III
III
II
III
III

4m

NR
NR
4m
B/3

B/3

B/3

NR
4m
4m
4m
NR
4m
4m
4m
4m
4m
4m
B/3

4m
NR
NR

4m
4m
NR

4m
NR
4m
4m
NR
4m
B/3
4m

4m
NR
NR
B/3
NR
B/3

PV

Open
Open
PV
PV

PV

PV

Open
PV
PV
PV
Open
PV
PV
PV
PV
PV
PV
PV

PV
Open
Open

PV
PV
Open

PV
Open
PV
PV
Open
PV
PV
PV

PV
Open
Open
PV
Open
PV

Restr

Open
Open
Restr
Closed

Closed

Closed

Open
Restr
Restr
Restr
Open
Restr
Restr
Restr
Restr
Restr
Restr
Closed

Restr
Open
Open

Restr
Restr
Open

Restr
Open
Restr
Restr
Open
Restr
Restr
Closed

Restr
Open
Open
Restr
Open
Restr

A
A
A
A, B, C6,
D
B

A

NSR

A
A
A
A
A
A
A, C
A
A
A
NSR
NSR

A
A
NSR

A
A
NSR

A
A
A
A
A
A, B, C,
D
A, B, D
B
A
A
NSR
NSR
NSR
A

.409 ..............................................................................
.409 ..............................................................................
.409 ..............................................................................
.409 ..............................................................................
.409 ..............................................................................
.236(b), (c), .409, .440, .526, .908(b) ..........................
.236(a), (b), (c), (g), .409, .526 ....................................
.409 ..............................................................................
.409 ..............................................................................
.409 ..............................................................................
.252, .526, .527, .554, .557, .933, .1045, .1052 .........
.238(a), (c), .355, .409, .440(a) (1)&(2), .500, .933,
.1004(a)(2), .1500.
.238(a), (c), .355, .409, .440(a) (1)&(2), .500, .933,
.1004(a)(2), .1500.
.408, .525, .526, .912(a)(1), .933, .1002(a), (b),
.1004, .1020.
.440, .903, .908(a) .......................................................
.409, .440, .908(a) .......................................................
.236(b), (c), .526 ..........................................................
.236(a), (b), .316, .409, .500, .501, .525 .526, .602,
.1000, .1020.
.372, .409, .440, .912(a)(1), .1002(a), (b), .1004 ........

.409, .526 .....................................................................
None ............................................................................
None ............................................................................

.409 .440, .526, .527, .908(b) ......................................
.238(b), (c), .409, .526, .527, .554 ..............................
.409, .440, .908(a) .......................................................

.409 ,.526, .912(a)(1), .1002(a), (b), .1004 .................
.409 ..............................................................................
.409, .526, ....................................................................
.409 ..............................................................................
.409, .440, .554, .555, .908(b), .1045 .........................
.408, .526, .527, .554, .555, .559, .933, .1045 ...........
.252, .526, .527, .554, .555, .933, .1045 .....................
.409, .526, .527 ............................................................

.409 ..............................................................................
None ............................................................................
.409, .912(a)(1), .1002(a), (b), .1004 ...........................
.236(b), (c), .409, .525, .526, .1020 ............................
None ............................................................................
.236(b), .409, .526 .......................................................

I–D

NA
NA
NA
NA

NA

NA

NA
I–D
I–D
I–D
NA
I–D
I–C
I–D
I–D
I–D
I–B
NA

I–C
I–C
NA

I–B
I–D
NA

I–D
I–D
I–C
I–D
I–B
I–B
I–B
I–B

NA
I–D
I–D
I–D
NA
NA

Coast Guard, DOT
Pt. 153, Table 1

189

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2-Methyl-5-ethylpyridine .........................
Methyl formate ........................................
Methyl heptyl ketone ..............................

Methylamyl acetate .................................
•Methylamyl alcohol ..............................
Methyl butyrate .......................................
Methylcyclohexane .................................
Methylcyclopentadiene dimer .................
•Methyl diethanolamine ..........................
Methylene
chloride,
see
Dichloromethane
2-Methyl-6-ethylaniline ............................

N-(2-Methoxy-1-methyl ethyl)-2-ethyl-6methyl chloroacetanilide, see Metolachlor
Methyl acrylate .......................................
Methylamine solution (42% or less) .......

S/P
S
P

S/P

C
B
D
B

P
P
P
P
P
S

S/P
S/P

C
C
C
C
B
D

B
C

S
S/P
S
S/P
S

S

D

D
A
D
B
D

P

C

S/P
P
P
P
P

B

Isopropylbenzene
(Cumene),
see
Propylbenzene (all isomers)
Lactonitrile solution (80% or less) ..........

c.

Haz.

B
[B]
C
C

b.

a.

Lauric acid ..............................................
Lauryl polyglucose (50% or less) ...........
Long chain alkaryl polyether (C11–C20)
Long chain polyetheramine in alkyl(C2–
C4)benzenes.
Magnesium long chain alkyl salicylate
(C11+).
Maleic anhydride7 ...................................
Mercaptobenzothiazol, sodium salt solution, see Sodium-2-mercaptobenzothiazol solution
Mesityl oxide ...........................................
Metam sodium solution ..........................
Methacrylic acid ......................................
Methacrylic resin in Ethylene dichloride
•Methacrylonitrile ....................................

IMO
Annex II
pollution
category

Cargo name

III
II
III

III

III
III
III
III
III
III

II
II

III
II
III
II
II

III

III

III
III
III
III

II

d.

Cargo
containment
system

NR
B/3
4m

NR

4m
4m
4m
4m
4m
NR

4m
B/3

4m
NR
4m
4m
B/3

4m

NR

NR
NR
NR
4m

B/3

e.

Ventheight

PV

Open
PV
PV

Open

PV
PV
PV
PV
PV
Open

PV
PV

PV
Open
PV
PV
PV

PV

Open

Open
Open
Open
PV

f.

Vent

Open
Restr
Restr

Open

Restr
Restr
Restr
Restr
Restr
Open

Restr
Closed

Restr
Open
Restr
Restr
Closed

Restr

Open

Open
Open
Open
Restr

Closed

g.

Gauge

A, B, C,
D
A, D
A
A

A
A
A
A
B
A

A, B
A, C, D

A
NSR
A
A, B
A

C

.236(b), .409 ................................................................
.372, .408, .440, .525, .526, .527, .1020 .....................
.409 ..............................................................................

None ............................................................................

.409, .526, .527, .912(a)(1), .1002(a), (b), .1004 ........
.236(a), (b), (c), (g), .316, .408, .525, .526, .527,
.1020.
.409 ..............................................................................
.409 ..............................................................................
.409 ..............................................................................
.409 ..............................................................................
.409 ..............................................................................
.236(b), (c) ...................................................................

.236(b), (c), .409, .526 .................................................
.236(a), (b), (c), (g), .409 .............................................
.238(a), .526, .912(a)(1), .1002(a), .1004 ....................
.236(b), .408, .440, .526, .908(a) ................................
.236(b), .316, .408, .525, .526, .527, .912(a)(1),
.1002(a), .1004, .1020.

None ............................................................................

7A,

I–D
I–D
I–D

NA

I–D
I–D
I–D
I–D
I–B
I–C

I–D
I–D

I–D
NA
NA
I–D
NA

I–D

NA

(.440, .903, .908(a))1 ...................................................

I–D

A, B

A
No
A, B
A

j.

Electrical
hazard
class
and
group

NA
NA
NA
I–D

i.

Special requirements in 46 CFR Part 153

.238(d), .252, .316, .336, .408, .440, .525, .526, .527,
.908(a), .912(a)(2), .1002, .1004, .1020, .1035.
.409, .440, .488, .908(a), (b) .......................................
.409, .440, .488, .908 (a), (b) ......................................
(.440, .903, .908(a))1 ...................................................
.409, .440, .903, .908(a) ..............................................

A, C, D

h.

Fire protection
system

TABLE 1.—SUMMARY OF MINIMUM REQUIREMENTS—Continued

Pt. 153, Table 1
46 CFR Ch. I (10–1–00 Edition)

190

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•o-Nitrochlorobenzene, see o-Chloronitrobenzene.
Nitroethane7 ............................................
o-Nitrophenol (molten) ............................
1- or 2-Nitropropane7 .............................
Nitropropane (60%), Nitroethane (40%)
mixture7.
Nitropropane (20%), Nitroethane (80%) 7
(o-, p-) Nitrotoluene ................................
Nonane (all isomers) ..............................
•Nonene (all isomers) ...........................
Nonyl acetate ..........................................
Nonyl alcohol (all isomers) .....................
Nonyl phenol ...........................................
Nonyl phenol poly(4–12)ethoxylates ......
Noxious liquid, N.F., (1) n.o.s. (‘‘trade
name’’ contains ‘‘principal components’’) ST 1, Cat A.
Noxious liquid, F., (2) n.o.s. (‘‘trade
name’’ contains ‘‘principal components’’) ST 1, Cat A.

P
P
P
S/P

A
[A]
C
C

Fmt 8010

Sfmt 8010

Y:\SGML\190178T.XXX
A

D
B
C
B
C
C
A
B
A

D
B
D
D

P

S
S/P
P
P
P
P
P
P
P

S
S/P
S
S

S/P
S/P

S/P
P

A
[A]

C
B

P
S/P
P
S
S/P

B
A
B
D
A

S
S/P
S

D
C
D

Methyl salicylate .....................................
•alpha-Methylstyrene ..............................
Metolachlor .............................................
Morpholine ..............................................
Motor fuel anti-knock compounds (containing lead alkyls).
Naphthalene (molten) .............................
Naphthalene sulfonic acid, sodium salt
solution (40% or less).
Naphthenic acid ......................................
Naphthenic acid, sodium salt solution ....
Neodecanoic acid ...................................
Nitrating acid (mixture of sulfuric and nitric acids).
Nitric acid (70% or less) .........................
Nitrobenzene ..........................................

S
S/P

D
A

Methyl methacrylate ...............................
Methyl naphthalene (molten) ..................
•2-Methyl-1-pentene, see Hexene (all
isomers).
•4-Methyl-1-pentene, see Hexene (all
isomers).
•2-Methylpyridine ....................................
•3-Methylpyridine ....................................
•4-Methylpyridine ....................................

S

III

2-Methyl-2-hydroxy-3-butyne ..................

I

III
II
III
III
III
III
II
III
I

III
II
III
III

II
II

II
II
III
II

II
III

III
III
III
III
I

II
II
II

II
II

III

4m

4m
B/3
4m
4m
NR
NR
NR
NR
NR

4m
B/3
4m
4m

4m
B/3

NR
NR
NR
B/3

4m
NR

NR
4m
NR
4m
B/3

B/3
B/3
B/3

4m
4m

4m

PV

PV
PV
PV
PV
Open
Open
Open
Open
Open

PV
PV
PV
PV

PV
PV

Open
Open
Open
PV

PV
Open

Open
PV
Open
PV
PV

PV
PV
PV

PV
PV

PV

Restr

Restr
Closed
Restr
Restr
Open
Open
Open
Open
Open

Restr
Closed
Restr
Restr

Restr
Closed

Open
Open
Open
Closed

Restr
Open

Open
Restr
Open
Restr
Closed

Closed
Closed
Closed

Restr
Restr

Restr

A

7 A,C
A, B
B, C
A
A
A
A
A
A

7 A,C
A, C, D
7A, C
7A, C

NSR
A, D

A
NSR
A
NSR

A, D
NSR

A
A, D
A
A
A, B, C

A, C
A, C
A, C, D

A, B, C,
D
A, B
A, D

.408 ..............................................................................

.236(b), .409, .526, .1002 (a), (b), .1003 .....................
.316, .408, .440, .525, .526, .908(b), .1020 ................
.409 ..............................................................................
.409 ..............................................................................
.409 ..............................................................................
None ............................................................................
.409 ..............................................................................
.409, .440, .4881, .908(a), (b) ......................................
.408 ..............................................................................

.236(b), .409, .526, .1002 (a), (b), .1003 .....................
.409, .440, .525, .526, .908(a), (b), .1020 ...................
.409, .526 .....................................................................
.236(b), .409, .526 .......................................................

.409 ..............................................................................
.409 ..............................................................................
None ............................................................................
.316, .408, .526, .527, .554, .555, .556, .559, .602,
.933, .1000, .1045.
.408, .526, .527, .554, .555, .559, .933, .1045 ...........
.316, .336, .408, .440, .525, .526, .908(b), .933,
.1020.

.236(b), .408, .525(a), (c), (d), (e), .1020 ....................
.236(b), .408, .525(a), (c), (d), (e), .1020 ....................
.236(b), .408, .440, .525(a), (c), (d), (e), .526,
.908(b), .1020.
.409 ..............................................................................
.409, .526, .912(a)(1), .1002(a), (b), .1004 .................
.409 ..............................................................................
.236(b), (c), .409 ..........................................................
.252, .316, .336, .408, .525, .526, .527, .933, .1020,
.1025.
.409, .440, .908(b) .......................................................
.409 ..............................................................................

.409, .526, .912(a)(1), .1002(a), (b), .1004 .................
.409 ..............................................................................

.236(b), (d), (f), (g), .409, .526 ....................................

I–D

NA

I–C
I–D
I–D
I–D
I–D
I–D
I–D
I–D
NA

I–C
NA
I–C
I–C

I–B
I–D

NA
NA
NA
I–B

I–D
NA

I–D
I–D
NA
I–C
I–D

I–D
I–D
I–D

I–D
I–D

Coast Guard, DOT
Pt. 153, Table 1

191

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P

P

P

P

P

A

A

B

B

B

Noxious liquid, N.F., (3) n.o.s. (‘‘trade
name’’ contains ‘‘principal components’’) ST 2, Cat A.
Noxious liquid, F., (4) n.o.s. (‘‘trade
name’’ contains ‘‘principal components’’) ST 2, Cat A.
•Noxious liquid, N.F., (5) n.o.s. (‘‘trade
name’’ contains ‘‘principal components’’) ST 2, Cat B.
•Noxious liquid, N.F., (6) n.o.s. (‘‘trade
name’’ contains ‘‘principal components’’) ST 2, Cat B, mp. equal to or
greater than 15 deg. C.
•Noxious liquid, F., (7) n.o.s. (‘‘trade
name’’ contains ‘‘principal components’’) ST 2, Cat B.
•Noxious liquid, F., (8) n.o.s. (‘‘trade
name’’ contains ‘‘principal components’’) ST 2, Cat B, mp. equal to or
greater than 15 deg. C.
Noxious liquid, N.F., (9) n.o.s. (‘‘trade
name’’ contains ‘‘principal components’’) ST 3, Cat A.
Noxious liquid, F., (10) n.o.s. (‘‘trade
name’’ contains ‘‘principal components’’) ST 3, Cat A.
•Noxious liquid, N.F., (11) n.o.s. (‘‘trade
name’’ contains ‘‘principal components’’) ST 3, Cat B.
•Noxious liquid, N.F., (12) n.o.s. (‘‘trade
name’’ contains ‘‘principal components’’) ST 3, Cat B, mp. equal to or
greater than 15 deg. C.
•Noxious liquid, F., (13) n.o.s. (‘‘trade
name’’ contains ‘‘principal components’’) ST 3, Cat B.
•Noxious liquid, F., (14) n.o.s. (‘‘trade
name’’ contains ‘‘principal components’’) ST 3, Cat B, mp. equal to or
greater than 15 deg. C.

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P

P

P

B

B

B

P

A

P

P

A

B

P

B

c.

b.

a.

Haz.

IMO
Annex II
pollution
category

Cargo name

Y:\SGML\190178T.XXX
III

III

III

III

III

III

II

II

II

II

II

II

d.

Cargo
containment
system

4m

4m

NR

NR

4m

NR

4m

4m

NR

NR

4m

NR

e.

Ventheight

PV

PV

Open

Open

PV

Open

PV

PV

Open

Open

PV

Open

f.

Vent

Restr

Restr

Open

Open

Restr

Open

Restr

Restr

Open

Open

Restr

Open

g.

Gauge

A

A

A

A

A

A

A

A

A

A

A

A

h.

Fire protection
system

NA

NA

.409, .440, .488, .908(b); (.908(a))1 ............................

.409; (.440, .908)1 ........................................................

NA

NA

NA

NA

.409, .440, .488, .908(b); (.908(a))1 ............................

.409; (.440, .908)1 ........................................................

.409, .440, .488, .908(b); (.908(a))1 ............................

NA

NA

( .409, .440, .908)1 ......................................................

.409 ..............................................................................

.409 ..............................................................................

NA

NA

.409; (.440, .908)1 ........................................................

.409, .440, .488, .908(b); (.908(a))1 ............................

NA

NA

j.

Electrical
hazard
class
and
group

.409 ..............................................................................

.409 ..............................................................................

i.

Special requirements in 46 CFR Part 153

TABLE 1.—SUMMARY OF MINIMUM REQUIREMENTS—Continued

Pt. 153, Table 1
46 CFR Ch. I (10–1–00 Edition)

192

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Polyolefinamine
in
alkyl(C2–
C4)benzenes.
Polyolefin phosphorosulfide, barium derivative (C28–C250).
Potassium hydroxide solution, see
Caustic potash solution
Potassium oleate ....................................

Oleylamine ..............................................
•Palm kernel acid oil ............................
Paraldehyde ............................................
Pentachloroethane ..................................
1,3-Pentadiene .......................................
Pentane (all isomers) .............................
Pentene (all isomers) .............................
n–Pentyl propionate ................................
Perchloroethylene ...................................
•Phenol (or solutions with 5% or more
Phenol).
1-Phenyl-l-xylyl ethane ...........................
Phosphoric acid ......................................
Phthalic anhydride (molten) ....................
Pinene, see the alpha- or beta- isomers.
alpha-Pinene ...........................................
beta-Pinene ............................................
•Pine oil ..................................................
•Polyalkyl(C18–C22) acrylate in Xylene
•Polyalkylene oxide polyol .....................
Poly(2+)cyclic aromatics .........................
Polyethylene polyamines ........................
Polyferric sulfate solution .......................
Polymethylene polyphenyl isocyanate6 ..

Noxious liquid, N.F., (15) n.o.s. (‘‘trade
name’’ contains ‘‘principal components’’) ST 3, Cat C.
Noxious liquid, F., (16) n.o.s. (‘‘trade
name’’ contains ‘‘principal components’’) ST 3, Cat C.
Octane (all isomers) ...............................
Octanol (all isomers) ..............................
Octene (all isomers) ...............................
Octyl acetate ...........................................
Octyl aldehydes ......................................
•Octyl nitrates (all isomers), see
Alkyl(C7–C9) nitrates.
Olefin mixtures (C5–C7) .........................
Olefin mixtures (C5–C15) .......................
alpha-Olefins (C6–C18) mixtures ...........
Oleum .....................................................

Y:\SGML\190178T.XXX
P

P

C

P

C

P
P
P
P
P
P
S/P
S/P
S

A
B
C
C
C
A
C
C
D
C

P
S
S/P

P
P
P
S/P

C
B
B
C

C
D
C

P
P
P
P
P

C
C
B
C
B

S/P
P
S/P
S/P
S/P
P
P
P
S/P
S/P

P

C

A
C
C
B
C
C
C
C
B
C

P

C

III

III

III

III
III
III
III
III
II
III
III
II

III
III
III

II
III
III
II
III
III
III
III
III
II

III
III
III
II

III
III
III
III
III

III

III

NR

NR

4m

4m
4m
NR
4m
NR
4m
NR
NR
B/3

NR
NR
4m

4m
NR
4m
B/3
4m
4m
4m
4m
B/3
B/3

4m
4m
4m
B/3

4m
NR
4m
NR
4m

4m

NR

Open

Open

PV

PV
PV
Open
PV
Open
PV
Open
Open
PV

Open
Open
PV

PV
Open
PV
PV
PV
PV
PV
PV
PV
PV

PV
PV
PV
PV

PV
Open
PV
Open
PV

PV

Open

Open

Open

Restr

Restr
Restr
Open
Restr
Open
Restr
Open
Open
Closed

Open
Open
Restr

Restr
Open
Restr
Restr
Restr
Restr
Restr
Restr
Restr
Closed

Restr
Restr
Restr
Closed

Restr
Open
Restr
Open
Restr

Restr

Open

A

A, B

A

A
A
A
A
A
A, D
A
NSR
A, C6, D

A, B
NSR
A, D

A
A, B
A
NSR
A, B
A
A
A
NSR
A

A
A
A
NSR

A
A
A
A
A

A

A

.409 ..............................................................................

NA

I–D
NA

(.440, .903, .908(a))1 ...................................................

I–D
I–D
I–D
NA
NA
I–D
NA
NA
NA

NA
I–B
I–D

NA
NA
I–C
NA
I–D
I–D
I–D
I–D
NA
I–D

I–D
I–D
I–D
I–B

.409 ..............................................................................
.409 ..............................................................................
.440, .908(a) ................................................................
.409, .440, .903, .908(a) ..............................................
.440, .903, .908(a) .......................................................
.409 ..............................................................................
.236(b), (c), .400, .440, .908(b) ...................................
.238(d) ..........................................................................
.236(a), (b), .409, .500, .501, .525, .526, .602, .1000,
.1020.
.409, .440, .903, .908(a) ..............................................

None ............................................................................
.554, .555, .558, .1045, .1052 .....................................
.440, .908(a), (b) ..........................................................

.409 ..............................................................................
.409 ..............................................................................
.409, .440, .908(a), (b) .................................................
.316, .408, .440, .526, .527, .554, .555, .556, .602,
.908(a), .933, .1000, .1045, .1052.
.409, .526 .....................................................................
.440, .903, .908(a), (b) .................................................
.409, .440, .908(b) .......................................................
.316, .409, .525, .526, .1020 .......................................
.409, .526, .912(a)(1), .1002, .1004 ............................
.372,.409 ......................................................................
.409 ..............................................................................
.409 ..............................................................................
.409, .526 .....................................................................
.408, .440, .488, .525, .526, .908(a), (b), .933, .1020

I–D
I–D
I–D
I–D
I–C

NA

(.440, .903, .908)1 ........................................................

.409 ..............................................................................
None ............................................................................
.409 ..............................................................................
None ............................................................................
.409, .440, .908(b) .......................................................

NA

(.440, .903, .908)1 ........................................................

Coast Guard, DOT
Pt. 153, Table 1

193

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C
C
C
D
C
C
C
C

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Y:\SGML\190178T.XXX
P

S
S/P

III
C

B

P
P
S
S/P

P
S
P
P
S/P
P
P
S
S

S/P

B
B
D
C

A
D
C
C
C
B
B
D
D

C

S/P
S/P
S/P
SP
S
S/P
S/P
S/P
S/P

[B]

n-Propylamine .........................................
n-Propylbenzene, see Propylbenzene
(all isomers).
Propylbenzene (all isomers) ...................
n-Propyl chloride .....................................
iso-Propylcyclohexane ............................
Propylene dimer .....................................
Propylene oxide ......................................
Propylene tetramer .................................
Propylene trimer .....................................
iso-Propyl ether ......................................
Pyridine ...................................................
Rosin, see Rosin oil.
Rosin oil ..................................................
Rosin soap (disproportionated) solution
Sodium aluminate solution .....................
Sodium borohydride (15% or less), Sodium hydroxide solution.
Sodium chlorate solution (50% or less)
Sodium dichromate solution (70% or
less).
•Sodium dimethyl naphthalene sulfonate
solution, see Dimethyl naphthalene
sulfonic acid, sodium salt solution.
•Sodium hydrogen sulfide (6% or less),
Sodium carbonate (3% or less) solution.

S/P

[C]

Potassium
polysulfide,
Potassium
thiosulfate solution (41% or less).
Propanil, Mesityl oxide, Isophorone mixture.
iso-Propanolamine ..................................
n-Propanolamine ....................................
Propionaldehyde .....................................
Propionic acid .........................................
Propionic anhydride ................................
Propionitrile .............................................
iso-Propylamine ......................................
iso-Propylamine solution (70% or less) ..

c.

b.

a.

Haz.

IMO
Annex II
pollution
category

Cargo name

III

III
II

III
III
III
III

III
III
III
III
II
III
III
III
III

II

III
III
III
III
III
II
II
II

III

III

d.

Cargo
containment
system

NR

NR
B/3

NR
NR
NR
NR

4m
4m
4m
4m
B/3
4m
4m
4m
4m

B/3

NR
NR
4m
4m
4m
B/3
B/3
B/3

4m

NR

e.

Ventheight

Open

Open
Open

Open
Open
Open
Open

PV
PV
PV
PV
PV
PV
PV
PV
PV

PV

Open
Open
PV
PV
PV
PV
PV
PV

PV

Open

f.

Vent

Open

Open
Closed

Open
Open
Open
Open

Restr
Restr
Restr
Restr
Closed
Restr
Restr
Restr
Restr

Closed

Open
Open
Restr
Restr
Restr
Closed
Closed
Closed

Restr

Open

g.

Gauge

NSR

NSR
NSR

A
A
NSR
NSR

A
A, B
A
A
A, C
A
A
A
A

A, C, D

A
A, D
A
A
A
A, D
C, D
C,D

A, B

No

h.

Fire protection
system

.409 ..............................................................................

.409, .933, .1065 ..........................................................
.236(b), (c), .408, .525, .933, .1020 ............................

.409, .440, .488, .908(a), (b) .......................................
.409 ..............................................................................
.236(a), (b), (c), (g), .933 .............................................
.236(a), (b), (c), (g), .440, .908(a), .933 ......................

.409 ..............................................................................
.409 ..............................................................................
.409, .440, .903, .908(a) ..............................................
.409 ..............................................................................
.372, .408, .440, .500, .526, .530, .1010, .1011 .........
.409 ..............................................................................
.409 ..............................................................................
.409, .500, .515, .912(a)(1) ..........................................
.236(b), .409 ................................................................

.236(b), (c), .440, .526, .903, .908(b) ..........................
.236(b), (c), .440, .526, .908(b) ...................................
.316, .409, .526, .527 ..................................................
.238(a), .409, .527, .554 ..............................................
.238(a), .526 ................................................................
.252, .316, .336, .408, .525, .526, .527, .1020 ...........
.236(b), (c), .372, .408, .440, .525, .526, .527, .1020
.236 (a), (b), (c), (g), .408, .440, .525, .526, .527,
.1010.
.236(b), (c), .408, .500, .525, .526, .527, .1020 ..........

.409, .440, .526, .908(a), (b) .......................................

.236 (b), (c), .409 .........................................................

i.

Special requirements in 46 CFR Part 153

TABLE 1.—SUMMARY OF MINIMUM REQUIREMENTS—Continued

NA

NA
NA

I–D
NA
NA
NA

I–D
I–D
I–D
NA
I–B
I–D
I–D
I–D
I–D

I–D

I–D
NA
I–C
I–D
I–D
I–D
I–D
I–D

NA

NA

j.

Electrical
hazard
class
and
group

Pt. 153, Table 1
46 CFR Ch. I (10–1–00 Edition)

194

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Tall oil (crude and distilled) ....................
Tall oil, fatty acid (resin acids less than
20%).
Tall oil fatty acid, barium salt .................
Tall oil soap (disproportionated) solution
1,1,2,2-Tetrachloroethane ......................
Tetraethylenepentamine3 .......................
Tetrahydrofuran ......................................
Tetrahydronaphthalene ...........................
1,2,3,5-Tetramethylbenzene,
see
Tetramethylbenzene (all isomers).
Tetramethylbenzene (all isomers) ..........
Toluene ...................................................

Sodium hydrogen sulfite solution (45%
or less).
Sodium hydrosulfide solution (45% or
less).
Sodium hydrosulfide, Ammonium sulfide
solution.
Sodium hydroxide solution, see Caustic
soda solution
•Sodium hypochlorite solution (15% or
less).
Sodium long chain alkyl salicylate
(C13+).
Sodium-2-mercaptobenzothiazol solution
•Sodium N-methyldithiocarbamate solution, see Metam sodium solution.
•Sodium naphthalene sulfonate solution
(40% or less), see Naphthalene sulfonic acid, sodium salt solution (40%
or less).
•Sodium naphthenate solution, see
Naphthenic acid, sodium salt solution.
Sodium nitrite solution ............................
Sodium petroleum sulfonate ...................
Sodium silicate solution ..........................
•Sodium sulfide solution (15% or less) ..
Sodium sulfite solution (25% or less) .....
•Sodium
tartrates,
Sodium
succinates solution.
Sodium thiocyanate solution (56% or
less).
Styrene monomer ...................................
Sulfohydrocarbon, long chain (C18+)
alkylamine mixture.
Sulfur (molten) ........................................
Sulfuric acid ............................................

Y:\SGML\190178T.XXX
P
P

S/P
P
S/P
S
S
P

B
B
B
D
D
C

A
C

P
P

B
C

S
S/P

III
C

P

B
S/P
P

S/P
S/P
P
S/P
P
S

B
B
C
C
C
D

B
B

P
S/P

C

B

S/P

B

[C]

S/P
S/P

B

S

D

III
III

III
III
III
III
III
III

III
III

III
III

III
III

III

II
II
III
III
III
III

III

III

III

II

III

III

NR
4m

NR
NR
B/3
NR
4m
NR

NR
NR

NR
NR

4m
NR

NR

NR
NR
NR
B/3
NR
NR

NR

NR

4m

B/3

4m

NR

Open
PV

Open
Open
PV
Open
PV
Open

Open
Open

Open
Open

PV
Open

Open

Open
Open
Open
PV
Open
Open

Open

Open

PV

PV

PV

Open

Open
Restr

Open
Open
Restr
Open
Restr
Open

Open
Open

Open
Open

Restr
Open

Open

Open
Open
Open
Closed
Open
Open

Open

Open

Restr

Closed

Restr

Open

A
A

A
A
NSR
A
A, D
A

A
A

NSR
NSR

A, B
A, B

NSR

NSR
A
A
NSR
NSR
A, B

NSR

A

NSR

A, C

NSR

NSR

(.440, .903,

...................................................

None ............................................................................
.409 ..............................................................................

.409, .440, .908(a) .......................................................
.409, .440, .908(a), (b) .................................................
.316, .409, .525, .526, .1020 .......................................
.236(b), (c), (g) .............................................................
.409, .526, .912(a)(2), .1004 ........................................
None ............................................................................

.252, .440, .526, .545 ..................................................
.440, .554, .555, .556, .602, .908(a), (b), .933, .1000,
.1045, .1046, .1052.
.409, .440, .488, .908(a), (b) .......................................
.440, .908(a), (b) ..........................................................

.236(b), .409, .912(a)(1), .1002(a), (b), .1004 .............
.409; (.440, .908(a))1 ...................................................

.238(a), .409 ................................................................

.408, .525(a), (c), (d), (e), .1020 ..................................
.409, .440, .908(a) .......................................................
None ............................................................................
.236(a), (b), .409, .440, .526, .908(b) ..........................
.409, .440, .908(b) .......................................................
.238(e) ..........................................................................

.236(a), (b), (c), (g), .409, .440, .908(b), .933 .............

.908(a))1

.236(a), (b), .933 ..........................................................

.236(a), (b), (c), (g), .316, .372, .408, .525, .526,
.527, .933, .1002, .1020.

.409, .440, .526, .908(b), .933 .....................................

None ............................................................................

I–D
I–D

NA
NA
NA
I–C
I–C
I–D

NA
NA

I–C
I–B

I–D
NA

NA

NA
NA
NA
NA
NA
NA

NA

NA

NA

NA

NA

NA

Coast Guard, DOT
Pt. 153, Table 1

195

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c.

b.
C

a.

Toluenediamine ......................................

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S/P
P
S
S/P
P
P
S
S/P
S/P
P
S
S/P

A
B
D
C
A
[C]
D
B
[A]
A
D
C

•Trimethylbenzene (all isomers) ............
Trimethylhexamethylenediamine (2,2,4and 2,4,4- isomers).
Trimethylhexamethylene
diisocyanate
(2,2,4- and 2,4,4- isomers) 6.
2,2,4-Trimethyl-1,3-pentanediol-1-isobutyrate.
Trimethyl phosphite ................................
1,3,5-Trioxane .........................................
Trixylenyl phosphate ...............................

P
P

C
A

1,1,2-Trichloro-1,2,2-trifluoroethane .......
Tricresyl phosphate (less than 1% of the
ortho isomer).
Tricresyl phosphate (1% or more of the
ortho isomer).
Tridecanoic acid .....................................
Triethanolamine ......................................
Triethylamine ..........................................
Triethylbenzene ......................................
Triethylene glycol di-(2-ethylbutyrate) ....
Triethylenetetramine ...............................
Triethyl phosphite ...................................
Trifluralin in Xylene .................................
Triisopropylated phenyl phosphates .......
Trimethylacetic acid ................................
Trimethylamine solution (30% or less) ...

S/P

o-Toluidine ..............................................
Tributyl phosphate ..................................
1,2,4-Trichlorobenzene ...........................
•1,1,1-Trichloroethane ............................
•1,1,2-Trichloroethane ............................
•Trichloroethylene ..................................
•1,2,3-Trichloropropane ..........................

Y:\SGML\190178T.XXX
P

C
S
S
P

S/P

B

#
D
A

P
S

A
D

S/P
P
S/P
P
S/P
S/P
S/P

C
C
B
B
C
C
C
C

Toluene diisocyanate6 ............................

S/P

Haz.

IMO
Annex II
pollution
category

Cargo name

III
III
I

III

II

III
III

III
III
II
II
III
III
III
II
II
III
II

I

III
II

II
III
II
III
III
III
II

II

II

d.

Cargo
containment
system

4m
4m
NR

NR

B/3

4m
NR

NR
NR
B/3
NR
NR
NR
B/3
4m
NR
4m
B/3

4m

NR
NR

B/3
NR
4m
NR
B/3
B/3
B/3

4m

B/3

e.

Ventheight

f.

PV
PV
Open

Open

PV

PV
Open

Open
Open
PV
Open
Open
Open
PV
PV
Open
PV
PV

PV

Open
Open

PV
Open
PV
Open
PV
PV
PV

PV

PV

Vent

Restr
Restr
Open

Open

Closed

Restr
Open

Open
Open
Restr
Open
Open
Open
Restr
Restr
Open
Restr
Closed

Closed

Open
Open

Closed
Open
Restr
Open
Restr
Restr
Closed

Closed

Closed

g.

Gauge

C
C

B, D
B

B, C

A, D
A, D
A

A

A, C 6

A
A, C

A
A
A,
A
A
A
A,
A,
A
A,
A,

A, B

A, C
A
A, B, C
A
NSR
NSR
A, B, C,
D
NSR
A

A, B, C,
D
A, C6, D

h.

Fire protection
system

.409, .526, .602, .1000 ................................................
.409 ..............................................................................
.408 ..............................................................................

None ............................................................................

.316, .409, .500, .501, .525, .526, .602, .1000, .1020

.409, .440, .488, .908(a), (b) .......................................
.236(a), (b), (c), (g) ......................................................
.236(b), (c), .409, .525, .526, .527, .1020 ...................
.409 ..............................................................................
None ............................................................................
.236(a), (b), (c) .............................................................
.409, .526 .....................................................................
.409, .526 .....................................................................
.409 ..............................................................................
.238(a), .266, .554 .......................................................
.236(a), (b), (c), (g), .372, .408, .440, .525, .526,
.527, .908(b), .1020.
.409 ..............................................................................
.236(a), (b), (c), (g), .409 .............................................

.408, .525(a), (c), (d), (e), .1020 ..................................

None ............................................................................
.409 ..............................................................................

.236(a), (b), (c), (g), .316, .408, .440, .525, .526,
.527, .908(a), (b), .933, .1020.
.236(b), .316, .408, .440, .500, .501, .525, .526, .527,
.602, .908(b), .1000, .1020.
.316, .408, .525, .526, .933, .1020 ..............................
.409 ..............................................................................
.409, .440, .526, .908(b) ..............................................
.409 ..............................................................................
.409, .525, .526, .933, .1020 .......................................
.316, .409, .525, .526, .1020 .......................................
.316, .408, .525, .526, .933, .1020 ..............................

i.

Special requirements in 46 CFR Part 153

TABLE 1.—SUMMARY OF MINIMUM REQUIREMENTS—Continued

I–D
I–C
NA

I–D

NA

I–D
NA

NA
I–C
I–C
I–D
I–C
I–C
NA
I–D
NA
I–D
I–C

I–D

NA
I–D

I–D
I–D
I–D
I–D
I–D
I–D
I–D

I–D

NA

j.

Electrical
hazard
class
and
group

Pt. 153, Table 1
46 CFR Ch. I (10–1–00 Edition)

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S/P
S/P
S/P

C
C
C
D
B
A
B
C
B
C
B

•Vinylidene chloride ................................

Vinyl neodecanate ..................................
Vinyltoluene ............................................

White spirit (low (15–20%) aromatic) .....
Xylenes8 (ortho-, meta-, para-) ..............
Xylenol ....................................................
Zinc alkaryl dithiophosphate (C7–C16) ..
Zinc alkyl dithiophosphate (C3–C14) .....

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II
III
III
III
III

III
III

II

III
III
II

III
III
III
III
III

4m
4m
NR
NR
NR

NR
4m

4m

4m
4m
4m

4m
NR
NR
NR
4m

PV
PV
Open
Open
Open

Open
PV

PV

PV
PV
PV

PV
Open
Open
Open
PV

Restr
Restr
Open
Open
Open

Open
Restr

Restr

Restr
Restr
Closed

Restr
Open
Open
Open
Restr

A
A
A, B
A, B
A, B

A, B
A, B, D

B

A
A
A

A
A
A
A
A

.409, .500, .526 ............................................................
.409, .912(a)(1), .1002(a), (b), .1004 ...........................
.236(b), (d), (f), (g), .252, .372, .408, .440, .500, .515,
.526, .527, .912(a)(1), .1002(a), (b), .1004.
.236(a), (b), .372, .409, .440, .500, .526, .527,
.912(a)(1), .1002(a), (b), .1004.
.409, .912(a)(1), .1002(a), (b), .1004 ...........................
.236(a), (b), (c), (g), .409, .912(a)(1), .1002(a), (b),
.1004.
.409 ..............................................................................
.409, .440, .908(b)8 ......................................................
.409, .440, .908(a), (b) .................................................
(.440, .903, .908(a))1 ...................................................
.409; (.440, .908(a))1 ...................................................

.409 ..............................................................................
.440, .908(a), (b) ..........................................................
.409 ..............................................................................
.409, .440, .908(b) .......................................................
.236(b), .526 ................................................................

NA
I–D
NA
NA
NA

NA
I–D

I–D

I–C
I–D
I–C

I–D
NA
I–D
I–D
I–D

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d. This column lists the type of containment system the cargo must have (see 153.230 through 153.232).
e. This column lists the height of any vent riser required (see 153.350 and 153.351).
f. This column lists any vent control valve required (see 153.355).
g. This column lists the type of gauging system required (see 153.400 through 153.406).

c. This column lists the hazard(s) of the commodity:
S—The commodity is included because of its safety hazards.
P—The commodity is included because of its pollution hazards.
S/P—The commodity is included because of both its safety and pollution hazards.

b. This column lists the IMO Annex II Pollution Category.
A, B, C, D—NLS Category of Annex II of MARPOL 73/78.
III—Appendix III of Annex II (non-NLS cargoes) of MARPOL 73/78.
#—No determination of NLS status. For shipping on an oceangoing vessel, see 46 CFR 153.900(c).
[ ]—A NLS category in brackets indicates that the product is provisionally categorized and that further data are necessary to complete the evaluation of its pollution hazards. Until the
hazard evaluation is completed, the pollution category assigned is used.
@—The NLS category has been assigned by the U.S. Coast Guard, in absence of one assigned by the IMO. The category is based upon a GESAMP Hazard Profile or by analogy to
a closely related product having an NLS assigned.

The provisions contained in 46 CFR part 197, subpart C, apply to liquid cargoes containing 0.5% or more benzene by volume.

Column Heading Footnotes:
a. The cargo name must be as it appears in this column (see 153.900, 153.907). Words in italics are not part of the cargo name but may be used in addition to the cargo name. When
one entry references another entry by use of the word ‘‘see’’, and both names are in roman type, either name may be used as the cargo name (e.g., Diethyl ether, see Ethyl ether). However, the referenced entry is preferred.

Items with a bullet (•) or in boldface are changes since October 1, 1993.

P
P
S/P
P
P

S/P
S/P

S

P
P
P
P
S/P

B
B
B
B
C

Trixylyl phosphate, see Trixylenyl phosphate.
Turpentine ...............................................
•Undecanoic acid ...................................
1-Undecene ............................................
1- Undecyl alcohol ..................................
Urea, Ammonium nitrate solution (containing more than 2% NH 3).
iso-Valeraldehyde, see Valeraldehyde
(all isomers).
n-Valeraldehyde, see Valeraldehyde
(all isomers).
Valeraldehyde (all isomers) ....................
Vinyl acetate ...........................................
Vinyl ethyl ether ......................................

Coast Guard, DOT
Pt. 153, Table 1

197

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[CGD 92–100, 59 FR 17028, Apr. 11, 1994, as amended by CGD 94–900, 59 FR 45139, Aug. 31, 1994; CGD 94–902, 60 FR 34043, June 29, 1995; CGD
95–900, 60 FR 34050, 34051, June 29, 1995; 60 FR 39267, Aug. 2, 1995]

Footnotes for Specific Cargoes:
1. Special applicability:
153.440 and .908(a) apply to the chemical, and mixtures containing the chemical, with a viscosity of 25 mPa.s at 20 deg C (68 deg F).
153.440 and .908(b) apply to the chemical, and mixtures containing the chemical, with a melting point of 0 deg C (32 deg F) and above.
153.488 applies to the chemical, and mixtures containing the chemical, with a melting point of 15 deg C (59 deg F) and above.
2. Benzene containing cargoes.
Applies to mixtures containing no other components with safety hazards and where the pollution category is C or less.
3. Diammonium salt of Zinc ethylenediaminetetraacetic acid solution; Tetraethylenepentamine.
Aluminum is a questionable material of construction with this cargo since pitting and corrosion has been reported. The IMO Chemical Code prohibits aluminum as a material of construction for this cargo.
4. 2,4-Dichlorophenol.
Some tank pitting has been reported when this cargo is contaminated with water, including moisture in the air. The IMO Chemical Code requires that the vapor space over this cargo
be kept dry.
5. Reserved.
6. Diphenylmethane diisocyanate; Isophorone diisocyanate; Polymethylene polyphenyl isocyanate; Toluene diisocyanate; Trimethylhexamethylene diisocyanate (2,2,4- and 2,4,4- isomers).
Water is effective in extinguishing open air fires but will generate hazardous quantities of gas if put on the cargo in enclosed spaces.
7. Maleic anhydride; Nitroethane; 1- or 2-Nitropropane; Nitropropane, Nitroethane mixtures.
Dry chemical extinguishers should not be used on fires involving these cargoes since some dry chemicals may react with the cargo and cause an explosion.
8. Xylenes.
Special requirement .908(b) only applies to the para- (p-) isomer, and mixtures containing the para-isomer having a melting point of 0 deg C (32 deg F) or more.

Abbreviations for Noxious Liquid cargoes:
N.F.—non-flammable (flash point greater than 60 deg C (140 deg F) closed cup (cc)).
F.—flammable (flash point less than or equal to 60 deg C (140 deg F) closed cup (cc)).
n.o.s.—not otherwise specified.
ST—Ship type.
Cat—Pollution category.

Abbreviations used in the Table:
NR—No requirement.
NA—Not applicable.

i. This column lists sections that apply to the cargo in addition to the general requirements of this part. The 153 Part number is omitted.
j. This column lists the electrical hazard class and group used for the cargo when determining requirements for electrical equipment under Subchapter J (Electrical Engineering) of this
chapter.
A number of electrical hazard class and group assignments are based upon that which appears in ‘‘Classification of Gases, Liquids and Volatile Solids Relative to Explosion-Proof Electrical Equipment’’, Publication NMAB 353–5, National Academy Press, 1982, when not appearing in NFPA 497M, ‘‘Manual for Classification of Gases, Vapors and Dusts for Electrical Equipment in Hazardous (Classified) Locations.’’
The I–B electrical hazard does not apply to weather deck locations (see 46 CFR Part 111) for inorganic acids: Chlorosulfonic acid; Hydrochloric acid; Nitrating acid; Nitric acid (70% or
less); Oleum; Phosphoric acid; Sulfuric acid.

h. This column lists the type of fire protection system required. Where more than one system is listed, any listed system may be used. A dry chemical system may not be substituted for
either type of foam system unless the dry chemical system is listed as an alternative or the substitution is approved by Commandant (G–MSO) (see 153.460). The types are as follows:
A is a foam system for water soluble cargoes (polar solvent foam).
B is a foam system for water insoluble cargoes (non-polar solvent foam).
C is a water spray system.
D is a dry chemical system.
NSR means there is no special requirement applying to fire protection systems.

Pt. 153, Table 1
46 CFR Ch. I (10–1–00 Edition)

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Coast Guard, DOT

Pt. 153, Table 2

TABLE 2—CARGOES NOT REGULATED
UNDER SUBCHAPTERS D OR O OF THIS
CHAPTER WHEN CARRIED IN BULK ON
NON-OCEANGOING BARGES
The cargoes listed in this table are
not regulated under subchapter D or O
of this title when carried in bulk on
non-oceangoing barges. Category A, B,
or C noxious liquid substance (NLS)
cargo, as defined in § 153.2 of this chapter, listed in this table, or any mixture
containing one or more of these cargoes, must be carried under this subchapter if carried in bulk on an oceangoing ship. Requirements for Category
D NLS cargoes and mixtures of nonNLS cargoes with Category D NLS cargoes are in 33 CFR part 151.
Cargoes

Pollution
Category

2-Amino-2-hydroxymethyl-1,3-propanediol solution.
•Ammonium hydrogen phosphate solution .........
Ammonium lignosulfonate solution, see also
Lignin liquor.
Ammonium nitrate solution (45% or less) ...........
•Ammonium nitrate, Urea solution (2% or less
NH 3), see also Urea, Ammonium nitrate solution (2% or less NH3).
•Ammonium phosphate, Urea solution, see also
Urea, Ammonium phosphate solution.
•Ammonium polyphosphate solution ...................
Ammonium sulfate solution (20% or less) ..........
Apple juice ...........................................................
Calcium bromide solution ....................................
Calcium carbonate slurry .....................................
Calcium chloride solution ....................................
Calcium hydroxide slurry .....................................
Calcium lignosulfonate solution, see also Lignin
liquor.
Calcium nitrate, Magnesium nitrate, Potassium
chloride solution.
Caramel solutions ................................................
Chlorinated paraffins (C14–C17) (with 52%
Chlorine).
2-Chloro-4-ethylamino-6-isopropylamino-5-triazine solution.
Choline chloride solution .....................................
Clay slurry ............................................................
Coal slurry ...........................................................
Dextrose solution .................................................
Diethylenetriamine
pentaacetic
acid,
pentasodium salt solution.
1,4-Dihydro-9,10-dihydroxy anthracene, disodium salt solution.
Dodecenylsuccinic acid, dipotassium salt solution.
Drilling brine (containing Calcium, Potassium, or
Sodium salts) (see also Potassium chloride
solution (10% or more)).
•Drilling brine (containing Zinc salts) ..................
Drilling mud (low toxicity) (if non-flammable and
non-combustible).
Ethylenediaminetetraacetic acid, tetrasodium
salt solution.
Ethylene-Vinyl acetate copolymer (emulsion) .....
Ferric hydroxyethylethylenediamine triacetic
acid, trisodium salt solution.
•Fish solubles (water based fish meal extracts)

III
D
III
D
D

D
D
D
III
III
III
III
D
III
III
III
III
#
D
III
III
III
III
D
D

B
[III]
D
III
D
III

Cargoes

Pollution
Category

Fructose solution .................................................
Glucose solution ..................................................
Glycine, sodium salt solution ...............................
•Hexamethylenediamine adipate solution ...........
N-(Hydroxyethyl)ethylenediamine triacetic acid,
trisodium salt solution.
Kaolin clay solution ..............................................
Kaolin slurry .........................................................
Kraft pulping liquor (free alkali content, 1% or
less) including: Black, Green, or White liquor.
Lignin liquor (free alkali content, 1% or less)
including:.
Ammonium lignosulfonate solution ..............
Calcium lignosulfonate solution ....................
Sodium lignosulfonate solution ....................
Lignin sulfonic acid, sodium salt solution ............
Magnesium chloride solution ...............................
Magnesium hydroxide slurry ...............................
Milk ......................................................................
Molasses ..............................................................
Molasses residue (from fermentation) .................
Naphthenic acid, sodium salt solution .................
Noxious liquid, N.F., (1) n.o.s. (‘‘trade name’’
contains ‘‘principle components’’) ST 1, Cat A
(if non-flammable or non-combustible).
Noxious liquid, N.F., (3) n.o.s. (‘‘trade name’’
contains ‘‘principle components’’) ST 2, Cat A
(if non-flammable or non-combustible).
Noxious liquid, N.F., (5) n.o.s. (‘‘trade name’’
contains ‘‘principle components’’) ST 2, Cat B
(if non-flammable or non-combustible).
Noxious liquid, N.F., (6) n.o.s. (‘‘trade name’’
contains ‘‘principle components’’) ST 2, Cat B,
mp. equal to or greater than 15 deg. C (if
non-flammable or non-combustible).
Noxious liquid, N.F., (9) n.o.s. (‘‘trade name’’
contains ‘‘principle components’’) ST 3, Cat A
(if non-flammable or non-combustible).
Noxious liquid, N.F., (11) n.o.s. (‘‘trade name’’
contains ‘‘principle components’’) ST 3, Cat B
(if non-flammable or non-combustible).
Noxious liquid, N.F., (12) n.o.s. (‘‘trade name’’
contains ‘‘principle components’’) ST 3, Cat B,
mp. equal to or greater than 15 deg. C (if
non-flammable or non-combustible).
Noxious liquid, N.F., (15) n.o.s. (‘‘trade name’’
contains ‘‘principle components’’) ST 3, Cat C
(if non-flammable or non-combustible).
Noxious liquid, n.o.s. (17) (‘‘trade name,’’ contains ‘‘principal components’’), Category D (if
non-flammable or non-combustible).
Non-noxious liquid, n.o.s. (18) (‘‘trade name,’’
contains ‘‘principal components’’), Appendix III
(if non-flammable or non-combustible).
Pentasodium salt of Diethylenetriamine pentaacetic acid solution, see Diethylenetriamine
pentaacetic acid, pentasodium salt solution.
Polyaluminum chloride solution ...........................
Potassium chloride solution (10% or more)(see
also the drilling brines entry).
Sewage sludge, treated (treated so as to pose
no additional decompositional and fire hazard;
stable, non-corrosive, non-toxic, non-flammable).
Silica slurry ..........................................................
Sludge, treated (treated so as to pose no additional decompositional and fire hazard; stable,
non-corrosive, non-toxic, non-flammable).
Sodium acetate, Glycol, Water mixture (containing 1% or less, Sodium hydroxide) (if nonflammable or non-combustible).
Sodium aluminosilicate slurry ..............................
Sodium carbonate solution ..................................

#
III
III
D
D
III
III
#
#
III
III
III
III
III
III
III
III
[III]
[A]
A

A

B

B

A

B

B

C

D

III

III

III
III
#

[III]
#

#

III
D

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Pt. 153, App. II

46 CFR Ch. I (10–1–00 Edition)

Cargoes

Pollution
Category

Sodium lignosulfonate solution, see also Lignin
liquor.
Sodium naphthenate solution (free alkali content, 3% or less), see Naphthenic acid, sodium salt solution.
•Sodium poly(4+)acrylate solution .....................
•Sodium silicate solution .....................................
•Sodium sulfate solution ......................................
Sorbitol solution ...................................................
Tetrasodium salt of Ethylenediaminetetraacetic
acid solution, see Ethylenediaminetetraacetic
acid, tetrasodium salt solution.
1,1,1-Trichloroethane ...........................................
1,1,2-Trichloro-1,2,2-trifluoroethane ....................
Trisodium
salt
of
N-(Hydroxyethyl)ethylenediaminetriacetic acid solution, see N(Hydroxyethyl)ethylenediamine triacetic acid,
trisodium salt solution.
Urea, Ammonium mono- and di-hydrogen phosphate, Potassium chloride solution.
•Urea, Ammonium nitrate solution (2% or less
NH3), see also Ammonium nitrate, Urea solution (2% or less).
•Urea, Ammonium phosphate solution, see also
Ammonium phosphate, Urea solution.
Urea solution .......................................................
Vanillan black liquor (free alkali content, 1% or
less).
Vegetable protein solution (hydrolysed) ..............
Water ...................................................................
•Zinc bromide, Calcium bromide solution, see
Drilling brine (containing Zinc salts).

III

APPENDIX I

[RESERVED]

APPENDIX II—METRIC UNITS USED IN
PART 153

[A]

III
C
III
III
D

Parameter

Metric (SI unit)

Abbreviation

Equivalent to
English or common metric

Force .............
Length ...........

Newton .............
Meter ................
Centimeter .......
Pascal ..............

N ........
m ........
cm ......
Pa .......

Kilo-Pascal
(1,000
Pascals).
Kilo-Pascal .......

kPa .....

0.225 lbs.
39.37 in.
.3937 in.
1.450×10¥4 lbs/
in 2.
0.145 lbs/in 2.

kPa .....

......do ...............
Degree Celsius
milli-Pascal second.
Cubic meter .....

kPa .....
°C .......
mPa.
sec.
m 3 ......

......do ...............

m3

Pressure .......

C
C
D
Temperature
Viscosity ........

D

Volume ..........
D

......

1.02×10¥2 kg/
cm2.
1×10 3 N/m 2.
5/9 (°F–32).
1.0 centipoise.
264 gallons
(gal).
35.3 ft 3.

D

[CGD 73–96, 42 FR 49027, Sept. 26, 1977, as
amended by CGD 78–128, 47 FR 21212, May 17,
1982; CGD 81–101, 52 FR 7799, Mar. 12, 1987. Redesignated by CGD 92–100, 59 FR 17045, Apr.
11, 1994]

III
#
III
III

Items with a bullet (•) or in boldface are changes since October 1, 1993.
Explanation of Symbols: As used in this table, the following
stand for:
A, B, C, D—NLS Category of Annex II of MARPOL 73/78.
I—Considered an ‘‘oil’’ under Annex I of MARPOL 73/78.
III—Appendix III of Annex II (non-NLS cargoes) of MARPOL
73/78.
LFG—Liquefied flammable gas.
#—No determination of NLS status. For shipping on an
oceangoing vessel, see 46 CFR 153.900(c).
[ ]—A NLS category in brackets indicates that the product is
provisionally categorized and that further data are necessary
to complete the evaluation of its pollution hazards. Until the
hazard evaluation is completed, the pollution category assigned is used.
@The NLS category has been assigned by the U.S. Coast
Guard, in absence of one assigned by the IMO. The category
is based upon a GESAMP Hazard Profile or by analogy to a
closely related product having an NLS assigned.
Abbreviations for Noxious liquid Cargoes:
N.F.—non-flammable (flash point greater than 60 degrees C (140 degrees F) cc).
n.o.s.—not otherwise specified.
ST—Ship type.
Cat—Pollution category.

[CGD 88–100, 54 FR 43584, Oct. 26, 1989; CGD
92–100, 59 FR 17044, Apr. 11, 1994, as amended
by CGD 94–900, 59 FR 45142, Aug. 31, 1994; CGD
94–902, 60 FR 34043, June 29, 1995; CGD 95–900,
60 FR 34052, June 29, 1995]

PART 154—SAFETY STANDARDS
FOR SELF-PROPELLED VESSELS
CARRYING
BULK
LIQUEFIED
GASES
Subpart A—General
Sec.
154.1 Incorporation by reference.
154.3 Purpose.
154.5 Applicability.
154.7 Definitions, acronyms, and terms.
154.9 Issuance of documents.
154.12 Existing gas vessel: Endorsements
and requirements.
154.15 U.S. flag vessel: Endorsement application.
154.17 U.S. flag vessel: Certificate of Inspection endorsement.
154.19 U.S. flag vessel: IMO certificate
issuance.
154.22 Foreign flag vessel: Certificate of
Compliance endorsement application.
154.24 Foreign flag vessel: IMO Certificate.
154.30 Liquefied gases not included in table
4.
154.32 Equivalents.
154.34 Special approval: Requests.
154.36 Correspondence and vessel information: Submission.
154.40 Right of appeal.

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