Stat/Authority

§ 155.490

33 CFR Ch. I (7–1–03 Edition)

(ii) Is an installed automatic shutdown system that meets the requirements of 46 CFR 39.20–9(b); or
(iii) Is an installed high level indicating device that meets the requirements of 46 CFR 39.20–3(b)(1), (b)(2), and
(b)(3).
(c) Each cargo tank of a U.S. flag
tank vessel must have installed on it
an overfill device meeting the requirements of this section at the next scheduled cargo tank internal examination
performed on the vessel under 46 CFR
31.10–21.
(d) Each cargo tank of a foreign flag
tank vessel must have installed on it
an overfill device—
(1) At the first survey that includes
dry docking, as required by the vessel’s
flag administration, to meet the International Convention for the Safety of
Life at Sea (SOLAS), 1974, as amended,
or the International Load Line Convention of 1966; or
(2) At the first cargo tank internal
examination performed on the tank
vessel under 46 CFR 31.10–21.
(e) This section does not apply to a
tank vessel that does not meet the double hull requirements of § 157.10d of this
chapter and, under 46 U.S.C. 3703a(c),
may not operate in the navigable waters or Exclusive Economic Zone of the
United States after January 1, 2000.
(f) This section does not apply to
tank vessels that carry asphalt, animal
fat, or vegetable oil as their only
cargo.

section, must have a tank level or pressure monitoring device that is permanently installed on each cargo tank
and meets the requirements of this section.
(c) Each device must meet the following requirements:
(1) Be intrinsically safe as per 46 CFR
111.105;
(2) Indicate any loss of power or failure of the tank level or pressure monitoring device and monitor the condition of the alarm circuitry and sensor
by an electronic self-testing feature;
(3) Alarm at or before the cargo in
the cargo tank either increases or decreases by a level of one percent from
the cargo quantity in the tank after securing cargo transfer operations;
(4) Operate in conditions up to sea
state 5, moisture, and varying weather
conditions; and
(5) Have audible and visual alarm indicators which are distinctly identifiable as cargo tank level or pressure
monitoring alarms that can be seen
and heard on the navigation bridge of
the tank ship or towing vessel and on
the cargo deck area.
(d) Double-hull tank vessels are exempt from the requirements of this
section.
(e) This section does not apply to
tank vessels that carry asphalt as their
only cargo.

[CGD 90–071a, 59 FR 53290, Oct. 21, 1994, as
amended by CGD 90–071a, 62 FR 48773, Sept.
17, 1997]

Subpart C—Transfer Personnel,
Procedures, Equipment, and
Records

§ 155.490 Tank level or pressure monitoring devices.
(a) Applicability. The tank level or
pressure monitoring (TLPM) device requirements of this section apply to—
(1) U.S.-flag single-hull tank vessels
carrying oil or oil residue as cargo; and
(2) Foreign-flag single-hull tank vessels carrying oil or oil residue as cargo
when operating in the navigable waters
of the United States and the exclusive
economic zone (EEZ) when bound to or
from a port or place in the United
States.
(b) By October 17, 2007, each vessel required under paragraph (a) of this section to meet the requirements of this

[USCG–2001–9046, 67 FR 58524, Sept. 17, 2002]

§ 155.700 Designation
charge.

of

person

Each operator or agent of a vessel
with a capacity of 250 or more barrels
of fuel oil, cargo oil, hazardous material, or liquefied gas as regulated in
Table 4 of 46 CFR part 154, or each person who arranges for and hires a person
to be in charge of a transfer of fuel oil,
of a transfer of liquid cargo in bulk, or
of cargo-tank cleaning, shall designate,
either by name or by position in the
crew, the person in charge (PIC) of
each transfer to or from the vessel and
of each tank-cleaning.
[CGD 79–116, 62 FR 25126, May 8, 1997]

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