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ELECTRONIC CODE OF FEDERAL REGULATIONS
e-CFR Data is current as of July 9, 2014
Title 42: Public Health
PART 84—APPROVAL OF RESPIRATORY PROTECTIVE DEVICES
Contents
Subpart A—General Provisions
§84.1 Purpose.
§84.2 Definitions.
§84.3 Respirators for mine rescue or other emergency use in mines.
Subpart B—Application for Approval
§84.10 Application procedures.
§84.11 Contents of application.
§84.12 Delivery of respirators and components by applicant; requirements.
Subpart C—Fees
§84.20 Examination, inspection, and testing of complete respirator assemblies; fees.
§84.21 Examination, inspection, and testing of respirator components or subassemblies; fees.
§84.22 Unlisted fees; additional fees; payment by applicant prior to approval.
Subpart D—Approval and Disapproval
§84.30 Certificates of approval; scope of approval.
§84.31 Certificates of approval; contents.
§84.32 Notice of disapproval.
§84.33 Approval labels and markings; approval of contents; use.
§84.34 Revocation of certificates of approval.
§84.35 Changes or modifications of approved respirators; issuance of modification of certificate of
approval.
§84.36 Delivery of changed or modified approved respirator.
Subpart E—Quality Control
§84.40
§84.41
§84.42
§84.43
Quality control plans; filing requirements.
Quality control plans; contents.
Proposed quality control plans; approval by the Institute.
Quality control records; review by the Institute; revocation of approval.
Subpart F—Classification of Approved Respirators; Scope of Approval; Atmospheric Hazards;
Service Time
§84.50
§84.51
§84.52
§84.53
Types of respirators to be approved; scope of approval.
Entry and escape, or escape only; classification.
Respiratory hazards; classification.
Service time; classification.
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Subpart G—General Construction and Performance Requirements
§84.60 Construction and performance requirements; general.
§84.61 General construction requirements.
§84.62 Component parts; minimum requirements.
§84.63 Test requirements; general.
§84.64 Pretesting by applicant; approval of test methods.
§84.65 Conduct of examinations, inspections, and tests by the Institute; assistance by applicant;
observers; recorded data; public demonstrations.
§84.66 Withdrawal of applications; refund of fees.
Subpart H—Self-Contained Breathing Apparatus
§84.70 Self-contained breathing apparatus; description.
§84.71 Self-contained breathing apparatus; required components.
§84.72 Breathing tubes; minimum requirements.
§84.73 Harnesses; installation and construction; minimum requirements.
§84.74 Apparatus containers; minimum requirements.
§84.75 Half-mask facepieces, full facepieces, mouthpieces; fit; minimum requirements.
§84.76 Facepieces; eyepieces; minimum requirements.
§84.77 Inhalation and exhalation valves; minimum requirements.
§84.78 Head harnesses; minimum requirements.
§84.79 Breathing gas; minimum requirements.
§84.80 Interchangeability of oxygen and air prohibited.
§84.81 Compressed breathing gas and liquefied breathing gas containers; minimum requirements.
§84.82 Gas pressure gages; minimum requirements.
§84.83 Timers; elapsed time indicators; remaining service life indicators; minimum requirements.
§84.84 Hand-operated valves; minimum requirements.
§84.85 Breathing bags; minimum requirements.
§84.86 Component parts exposed to oxygen pressures; minimum requirements.
§84.87 Compressed gas filters; minimum requirements.
§84.88 Breathing bag test.
§84.89 Weight requirement.
§84.90 Breathing resistance test; inhalation.
§84.91 Breathing resistance test; exhalation.
§84.92 Exhalation valve leakage test.
§84.93 Gas flow test; open-circuit apparatus.
§84.94 Gas flow test; closed-circuit apparatus.
§84.95 Service time test; open-circuit apparatus.
§84.96 Service time test; closed-circuit apparatus.
§84.97 Test for carbon dioxide in inspired gas; open- and closed-circuit apparatus; maximum
allowable limits.
§84.98 Tests during low temperature operation.
§84.99 Man tests; testing conditions; general requirements.
§84.100 Man tests 1, 2, 3, and 4; requirements.
§84.101 Man test 5; requirements.
§84.102 Man test 6; requirements.
§84.103 Man tests; performance requirements.
§84.104 Gas tightness test; minimum requirements.
Tables to Subpart H of Part 84
Subpart I—Gas Masks
§84.110
§84.111
§84.112
§84.113
§84.114
Gas masks; description.
Gas masks; required components.
Canisters and cartridges in parallel; resistance requirements.
Canisters and cartridges; color and markings; requirements.
Filters used with canisters and cartridges; location; replacement.
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§84.115 Breathing tubes; minimum requirements.
§84.116 Harnesses; installation and construction; minimum requirements.
§84.117 Gas mask containers; minimum requirements.
§84.118 Half-mask facepieces, full facepieces, and mouthpieces; fit; minimum requirements.
§84.119 Facepieces; eyepieces; minimum requirements.
§84.120 Inhalation and exhalation valves; minimum requirements.
§84.121 Head harnesses; minimum requirements.
§84.122 Breathing resistance test; minimum requirements.
§84.123 Exhalation valve leakage test.
§84.124 Facepiece tests; minimum requirements.
§84.125 Particulate tests; canisters containing particulate filters; minimum requirements.
§84.126 Canister bench tests; minimum requirements.
Tables to Subpart I of Part 84
Subpart J—Supplied-Air Respirators
§84.130 Supplied-air respirators; description.
§84.131 Supplied-air respirators; required components.
§84.132 Breathing tubes; minimum requirements.
§84.133 Harnesses; installation and construction; minimum requirements.
§84.134 Respirator containers; minimum requirements.
§84.135 Half-mask facepieces, full facepieces, hoods, and helmets; fit; minimum requirements.
§84.136 Facepieces, hoods, and helmets; eyepieces; minimum requirements.
§84.137 Inhalation and exhalation valves; check valves; minimum requirements.
§84.138 Head harnesses; minimum requirements.
§84.139 Head and neck protection; supplied-air respirators; minimum requirements.
§84.140 Air velocity and noise levels; hoods and helmets; minimum requirements.
§84.141 Breathing gas; minimum requirements.
§84.142 Air supply source; hand-operated or motor driven air blowers; Type A supplied-air
respirators; minimum requirements.
§84.143 Terminal fittings or chambers; Type B supplied-air respirators; minimum requirements.
§84.144 Hand-operated blower test; minimum requirements.
§84.145 Motor-operated blower test; minimum requirements.
§84.146 Method of measuring the power and torque required to operate blowers.
§84.147 Type B supplied-air respirator; minimum requirements.
§84.148 Type C supplied-air respirator, continuous flow class; minimum requirements.
§84.149 Type C supplied-air respirator, demand and pressure demand class; minimum requirements.
§84.150 Air-supply line tests; minimum requirements.
§84.151 Harness test; minimum requirements.
§84.152 Breathing tube test; minimum requirements.
§84.153 Airflow resistance test, Type A and Type AE supplied-air respirators; minimum requirements.
§84.154 Airflow resistance test; Type B and Type BE supplied-air respirators; minimum requirements.
§84.155 Airflow resistance test; Type C supplied-air respirator, continuous flow class and Type CE
supplied-air respirator; minimum requirements.
§84.156 Airflow resistance test; Type C supplied-air respirator, demand class; minimum
requirements.
§84.157 Airflow resistance test; Type C supplied-air respirator, pressure-demand class; minimum
requirements.
§84.158 Exhalation valve leakage test.
§84.159 Man tests for gases and vapors; supplied-air respirators; general performance requirements.
§84.160 Man test for gases and vapors; Type A and Type AE respirators; test requirements.
§84.161 Man test for gases and vapors; Type B and Type BE respirators; test requirements.
§84.162 Man test for gases and vapors; Type C respirators, continuous-flow class and Type CE
supplied-air respirators; test requirements.
§84.163 Man test for gases and vapors; Type C supplied-air respirators, demand and pressuredemand classes; test requirements.
Table to Subpart J of Part 84
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Subpart K—Non-Powered Air-Purifying Particulate Respirators
§84.170 Non-powered air-purifying particulate respirators; description.
§84.171 Non-powered air-purifying particulate respirators; required components.
§84.172 Breathing tubes; minimum requirements.
§84.173 Harnesses; installation and construction; minimum requirements.
§84.174 Respirator containers; minimum requirements.
§84.175 Half-mask facepieces, full facepieces, hoods, helmets, and mouthpieces; fit; minimum
requirements.
§84.176 Facepieces, hoods, and helmets; eyepieces; minimum requirements.
§84.177 Inhalation and exhalation valves; minimum requirements.
§84.178 Head harnesses; minimum requirements.
§84.179 Non-powered air-purifying particulate respirators; filter identification.
§84.180 Airflow resistance tests.
§84.181 Non-powered air-purifying particulate filter efficiency level determination.
§84.182 Exhalation valve leakage test; minimum requirements.
Subpart L—Chemical Cartridge Respirators
§84.190 Chemical cartridge respirators: description.
§84.191 Chemical cartridge respirators; required components.
§84.192 Cartridges in parallel; resistance requirements.
§84.193 Cartridges; color and markings; requirements.
§84.194 Filters used with chemical cartridges; location; replacement.
§84.195 Breathing tubes; minimum requirements.
§84.196 Harnesses; installation and construction; minimum requirements.
§84.197 Respirator containers; minimum requirements.
§84.198 Half-mask facepieces, full facepieces, mouthpieces, hoods, and helmets; fit; minimum
requirements.
§84.199 Facepieces, hoods, and helmets; eyepieces; minimum requirements.
§84.200 Inhalation and exhalation valves; minimum requirements.
§84.201 Head harnesses; minimum requirements.
§84.202 Air velocity and noise levels; hoods and helmets; minimum requirements.
§84.203 Breathing resistance test; minimum requirements.
§84.204 Exhalation valve leakage test; minimum requirements.
§84.205 Facepiece test; minimum requirements.
§84.206 Particulate tests; respirators with filters; minimum requirements; general.
§84.207 Bench tests; gas and vapor tests; minimum requirements; general.
Tables to Subpart L of Part 84
Subpart M [Reserved]
Subpart N—Special Use Respirators
§84.250
§84.251
§84.252
§84.253
§84.254
§84.255
§84.256
§84.257
§84.258
Vinyl chloride respirators; description.
Required components.
Gas masks; requirements and tests.
Chemical-cartridge respirators; requirements and tests.
Powered air-purifying respirators; requirements and tests.
Requirements for end-of-service-life indicator.
Quality control requirements.
Labeling requirements.
Fees.
Subpart O—Closed-Circuit Escape Respirators
§84.300 Closed-circuit escape respirator; description.
§84.301 Applicability to new and previously approved CCERs.
§84.302 Required components, attributes, and instructions.
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§84.303
§84.304
§84.305
§84.306
§84.307
§84.308
§84.309
§84.310
§84.311
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General testing conditions and requirements.
Capacity test requirements.
Performance test requirements.
Wearability test requirements.
Environmental treatments.
Additional testing.
Additional testing and requirements for dockable CCERs.
Post-approval testing.
Registration of CCER units upon purchase.
Subparts P-JJ [Reserved]
Subpart KK—Dust, Fume, and Mist; Pesticide; Paint Spray; Powered Air-Purifying High
Efficiency Respirators and Combination Gas Masks
§84.1100 Scope and effective dates.
§84.1101 Definitions.
§84.1102 Examination, inspection and testing of complete respirator assemblies; fees.
§84.1103 Approval labels and markings; approval of contents; use.
§84.1130 Respirators; description.
§84.1131 Respirators; required components.
§84.1132 Breathing tubes; minimum requirements.
§84.1133 Harnesses; installation and construction; minimum requirements.
§84.1134 Respirator containers; minimum requirements.
§84.1135 Half-mask facepieces, full facepieces, hoods, helmets, and mouthpieces; fit; minimum
requirements.
§84.1136 Facepieces, hoods, and helmets; eyepieces; minimum requirements.
§84.1137 Inhalation and exhalation valves; minimum requirements.
§84.1138 Head harnesses; minimum requirements.
§84.1139 Air velocity and noise levels; hoods and helmets; minimum requirements.
§84.1140 Dust, fume, and mist respirators; performance requirements; general.
§84.1141 Isoamyl acetate tightness test; dust, fume, and mist respirators designed for respiratory
protection against fumes of various metals having an air contamination level not less than 0.05
milligram per cubic meter; minimum requirements.
§84.1142 Isoamyl acetate tightness test; respirators designed for respiratory protection against dusts,
fumes, and mists having an air contamination level less than 0.05 milligram per cubic meter, or against
radionuclides; minimum requirements.
§84.1143 Dust, fume, and mist air-purifying filter tests; performance requirements; general.
§84.1144 Silica dust test for dust, fume, and mist respirators; single-use or reusable filters; minimum
requirements.
§84.1145 Silica dust test; non-powered single-use dust respirators; minimum requirements.
§84.1146 Lead fume test for dust, fume, and mist respirators; minimum requirements.
§84.1147 Silica mist test for dust, fume, and mist respirators; minimum requirements.
§84.1148 Tests for respirators designed for respiratory protection against more than one type of
dispersoid; minimum requirements.
§84.1149 Airflow resistance tests; all dust, fume, and mist respirators; minimum requirements.
§84.1150 Exhalation valve leakage test; minimum requirements.
§84.1151 DOP filter test; respirators designed as respiratory protection against dusts, fumes, and
mists having an air contamination level less than 0.05 milligram per cubic meter and against
radionuclides; minimum requirements.
§84.1152 Silica dust loading test; respirators designed as protection against dusts, fumes, and mists
having an air contamination level less than 0.05 milligram per cubic meter and against radionuclides;
minimum requirements.
§84.1153 Dust, fume, mist, and smoke tests; canister bench tests; gas masks canisters containing
filters; minimum requirements.
§84.1154 Canister and cartridge requirements.
§84.1155 Filters used with canisters and cartridges; location; replacement.
§84.1156 Pesticide respirators; performance requirements; general.
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§84.1157 Chemical cartridge respirators with particulate filters; performance requirements; general.
§84.1158 Dust, fume, and mist tests; respirators with filters; minimum requirements; general.
Tables to Subpart KK of Part 84
AUTHORITY: 29 U.S.C. 577a, 651 et seq., and 657(g); 30 U.S.C. 3, 5, 7, 811, 842(h), 844.
SOURCE: 60 FR 30355, June 8, 1995, unless otherwise noted.
EDITORIAL NOTE: Nomenclature changes to part 84 appear at 69 FR 18803, Apr. 9, 2004.
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Subpart A—General Provisions
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§84.1 Purpose.
The purpose of the regulations contained in this part 84 is:
(a) To establish procedures and prescribe requirements which must be met in filing applications
for approval by the National Institute for Occupational Safety and Health of respirators or changes or
modifications of approved respirators;
(b) To establish a schedule of fees to be charged each applicant for the inspections,
examinations, and testing conducted by the Institute under the provisions of this part;
(c) To provide for the issuance of certificates of approval or modifications of certificates of
approval for respirators which have met the applicable construction, performance, and respiratory
protection requirements set forth in this part; and
(d) To specify minimum requirements and to prescribe methods to be employed by the Institute
and by the applicant in conducting inspections, examinations, and tests to determine the effectiveness
of respirators used during entry into or escape from hazardous atmospheres.
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§84.2 Definitions.
As used in this part—
(a) Applicant means an individual, partnership, company, corporation, association, or other
organization that designs, manufactures, assembles, or controls the assembly of a respirator and who
seeks to obtain a certificate of approval for such respirator.
(b) Approval means a certificate or formal document issued by the Institute stating that an
individual respirator or combination of respirators has met the minimum requirements of this part, and
that the applicant is authorized to use and attach an approval label to any respirator, respirator
container, or instruction card for any respirator manufactured or assembled in conformance with the
plans and specifications upon which the approval was based, as evidence of such approval.
(c) Approved means conforming to the minimum requirements of this part.
(d) Auxiliary equipment means a self-contained breathing apparatus, the use of which is limited in
underground mine rescue and recovery operations to situations where the wearer has ready access to
fresh air and at least one crew equipped with approved self-contained breathing apparatus of 2 hours
or longer rating, is in reserve at a fresh-air base.
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(e) Certification and Quality Assurance Branch means the Certification and Quality Assurance
Branch, Division of Safety Research, Appalachian Laboratory for Occupational Safety and Health,
National Institute for Occupational Safety and Health, 1095 Willowdale Road, Morgantown, West
Virginia 26505-2888.
(f) Compressed-breathing gas means oxygen or air stored in a compressed state and supplied to
the wearer in gaseous form.
(g) dBA means sound pressure levels in decibels, as measured with the A-weighted network of a
standard sound level meter using slow response.
(h) Dust means a solid mechanically produced particle with a size ranging from submicroscopic to
macroscopic.
(i) Respirators for entry into and escape from means respiratory devices providing protection
during entry into and escape from hazardous atmospheres.
(j) Respirators for escape only means respiratory devices providing protection only during escape
from hazardous atmospheres.
(k) A facepiece or mouthpiece is a respirator component designed to provide a gas-tight or dusttight fit with the face and may include headbands, valves, and connections for canisters, cartridges,
filters, or respirable gas source.
(l) Final inspection means that activity carried out on a product after all manufacturing and
assembly operations are completed to insure completeness and adherence to performance or other
specifications, including satisfactory appearance.
(m) Fume means a solid condensation particle, generally less than 1 micrometer in diameter.
(n) Gas means an aeriform fluid which is in a gaseous state at ordinary temperature and pressure.
(o) Hazardous atmosphere means:
(1) Any atmosphere containing a toxic or disease producing gas, vapor, dust, fume, mist, or
pesticide, either immediately or not immediately dangerous to life or health; or
(2) Any oxygen-deficient atmosphere.
(p) A hood or helmet is a respirator component which covers the wearer's head and neck, or
head, neck, and shoulders, and is supplied with incoming respirable air for the wearer to breathe. It
may include a headharness and connection for a breathing tube.
(q) Immediately dangerous to life or health means conditions that pose an immediate threat to life
or health or conditions that pose an immediate threat of severe exposure to contaminants, such as
radioactive materials, which are likely to have adverse cumulative or delayed effects on health.
(r) Incoming inspection means the activity of receiving, examining, and accepting only those
materials and parts whose quality conforms to specification requirements.
(s) In-process inspection means the control of products at the source of production and at each
step of the manufacturing process, so that departures from specifications can be corrected before
defective components or materials are assembled into the finished product.
(t) Institute means the National Institute for Occupational Safety and Health, Department of Health
and Human Services.
(u) Liquefied-breathing gas means oxygen or air stored in liquid form and supplied to the wearer
in a gaseous form.
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(v) Mist means a liquid condensation particle with a size ranging from submicroscopic to
macroscopic.
(w) MSHA means the Mine Safety and Health Administration, U.S. Department of Labor.
(x) Not immediately dangerous to life or health means any hazardous atmosphere which may
produce physical discomfort immediately, chronic poisoning after repeated exposure, or acute adverse
physiological symptoms after prolonged exposure.
(y) Oxygen-deficient atmosphere means an atmosphere which contains an oxygen partial
pressure of less than 148 millimeters of mercury (19.5 percent by volume at sea level).
(z) Powered air-purifying respirator means a device equipped with a facepiece, hood, or helmet,
breathing tube, canister, cartridge, filter, canister with filter, or cartridge with filter, and a blower.
(aa) Respirator means any device designed to provide the wearer with respiratory protection
against inhalation of a hazardous atmosphere.
(bb) Single-use respirator means a respirator that is entirely discarded after excessive resistance,
sorbent exhaustion, or physical damage renders it unsuitable for further use.
(cc) Vapor means the gaseous state of a substance that is solid or liquid at ordinary temperature
and pressure.
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§84.3 Respirators for mine rescue or other emergency use in mines.
(a)(1) NIOSH and the Mine Safety and Health Administration (MSHA), U.S. Department of Labor,
shall jointly review and issue certifications for respirators used for mine emergencies and mine rescue,
including any associated service-life plans, users' manuals and other supporting documentation.
(2) Each certification for a respirator designed for mine rescue or other emergency use in mines
shall include, as a condition of approval, any use limitations related to mine safety and health.
(b) NIOSH and MSHA shall jointly determine appropriate recall and retrofit remedies for field
complaints or identified deficiencies involving any respirators used in the mining environment.
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Subpart B—Application for Approval
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§84.10 Application procedures.
(a) Inspection, examination, and testing leading to the approval of the types of respirators
classified in subpart F of this part shall be undertaken by the Institute only pursuant to written
applications which meet the minimum requirements set forth in this subpart B.
(b) Applications shall be submitted to the Certification and Quality Assurance Branch, and shall be
accompanied by a check, bank draft, or money order in the amount specified in subpart C of this part,
payable to the order of the National Institute for Occupational Safety and Health.
(c) Except as provided in §84.64, the examination, inspection, and testing of all respirators shall
be conducted by the Certification and Quality Assurance Branch.
(d) Applicants, manufacturers, or their representatives may visit or communicate with the
Certification and Quality Assurance Branch in order to discuss the requirements for approval of any
respirator or the proposed designs thereof. No charge shall be made for such consultation and no
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written report shall be issued to applicants, manufacturers, or their representatives by the Institute as a
result of such consultation.
(e) Respirators having electrical or electronic components that are required to be permissible
under chapter I of title 30 shall be tested in accordance with 30 CFR part 18. Applications for approval
of such respirators by MSHA shall be submitted in writing to: MSHA, Approval and Certification Center,
Box 251, Industrial Park Road, Triadelphia, West Virginia 26059.
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§84.11 Contents of application.
(a) Each application for approval shall contain a complete written description of the respirator for
which approval is requested together with drawings and specifications (and lists thereof) showing full
details of construction of the respirator and of the materials used.
(b) Drawings shall be titled, numbered, and dated; any revision dates shall be shown on the
drawings, and the purpose of each revision being sought shall be shown on the drawing or described
on an attachment to the drawing to which it applies.
(c) Each application for approval shall contain a proposed plan for quality control which meets the
minimum requirements set forth in subpart E of this part.
(d) Each application shall contain a statement that the respirator has been pretested by the
applicant as prescribed in §84.64, and shall include the results of such tests.
(e) Each application for approval shall contain a statement that the respirator and component
parts submitted for approval are either prototypes, or made on regular production tooling, with no
operation included which will not be incorporated in regular production processing.
(The information collections contained in this section are approved under OMB control number 0920-0109)
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§84.12 Delivery of respirators and components by applicant; requirements.
(a) Each applicant shall, when an application is filed pursuant to §84.10, be advised by the
Institute of the total number of respirators and component parts required for testing.
(b) The applicant shall deliver, at his own expense, the number of completely assembled
respirators and component parts required for testing, to the Certification and Quality Assurance
Branch.
(c) Respirators and component parts submitted for approval must be made from materials
specified in the application.
(d) One completely assembled respirator approved under the provisions of this part may be
retained by the Institute as a laboratory exhibit, the remaining respirators may be returned to the
applicant at his own expense, upon written request within 30 days after notice of approval. If no such
request is made, the respirators will be disposed of by the Institute in such manner as it deems
appropriate.
(e) Where a respirator fails to meet the requirements for approval set forth in this part, all
respirators and components delivered in accordance with this section may be returned to the applicant
at his own expense, upon written request within 30 days after notice of disapproval. If no such request
is made, the respirators will be disposed of by the Institute in such manner as it deems appropriate.
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Subpart C—Fees
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§84.20 Examination, inspection, and testing of complete respirator assemblies; fees.
Except as provided in §84.22, the following fees shall be charged by the Institute for the
examination, inspection and testing of complete respirator assemblies:
Self-contained breathing apparatus:
Entry and escape, 1 hour or more
Entry and escape, less than 1 hour
Escape only
Gas masks:
Single hazard
Type N
Supplied-air respirators
Particulate respirators
Chemical cartridge respirators
$3,500
2,750
2,000
1,100
4,100
750
1,250
1,150
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§84.21 Examination, inspection, and testing of respirator components or subassemblies; fees.
Except as provided in §84.22, the following fees shall be charged by the Institute for the
examination, inspection and testing of the individual respirator components or subassemblies:
Facepieces
Canisters
Cartridges
Filters
Hoses
Blowers
Harnesses
$450
900
600
650
250
250
100
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§84.22 Unlisted fees; additional fees; payment by applicant prior to approval.
(a) Applications for the examination, inspection and testing of complete respirator assemblies
which are not listed in §84.20, or for the examination, inspection, and testing of respirator components
or subassemblies which are not listed in §84.21, shall be accompanied by the following deposits:
Complete respirator assembly
Each individual component or subassembly
$1,500
500
(b) The Institute reserves the right to conduct any examination, inspection, or test it deems
necessary to determine the quality and effectiveness of any listed or unlisted respirator assembly or
respirator component or subassembly, and to assess the cost of such examinations, inspections, or
tests against the applicant prior to the issuance of any approval for such assembly, component, or
subassembly.
(c) The fees charged for the examination, inspection, and testing of unlisted respirator
assemblies, unlisted individual respirator components or subassemblies, and for the additional
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examination, inspection, and testing of listed respirator assemblies and components or subassemblies
shall be at the rate of $100 per day for each man-day required to be expended by the Institute.
(d) Upon completion of all examinations, inspections, and tests of unlisted respirator assemblies
or components, or following the completion of any additional examination, inspections, or tests of listed
assemblies, or components or subassemblies, including retesting subsequent to disapproval, the
Institute shall advise the applicant in writing of the total cost assessed and the additional amount, if
any, which must be paid to the Institute as a condition of approval.
(e) In the event the amount assessed by the Institute for unlisted assemblies, or components or
subassemblies is less than the amount of the deposit submitted in accordance with paragraph (a) of
this section, the Institute shall refund the overpayment upon the issuance of any approval or notice of
disapproval.
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Subpart D—Approval and Disapproval
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§84.30 Certificates of approval; scope of approval.
(a) The Institute shall issue certificates of approval pursuant to the provisions of this subpart only
for individual, completely assembled respirators which have been examined, inspected, and tested,
and which meet the minimum requirements set forth in subparts H through L of this part, as applicable.
(b) The Institute will not issue certificates of approval for any respirator component or for any
respirator subassembly.
(c) The Institute shall not issue an informal notification of approval. However, if the application for
approval, submitted in accordance with §84.11, states that the submitted respirator and component
parts are only prototypes, the Institute will examine, inspect, and test such respirator and component
parts in accordance with the provisions of this part. If, upon completion of such examinations,
inspections and tests, it is found that the prototype meets the minimum requirements set forth in this
part, the Institute may inform the applicant, in writing, of the results of the examinations, inspections,
and tests, and may require him to resubmit respirators and component parts made on regular
production tooling, with no operations included which will not be incorporated in regular production
processing, for further examination, inspection, and testing, prior to issuance of the certificate of
approval.
(d) Applicants required to resubmit respirators and component parts made on regular production
tooling, with no operation included which will not be incorporated in regular production processing,
shall be charged fees in accordance with subpart C of this part.
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§84.31 Certificates of approval; contents.
(a) The certificate of approval shall contain a classification and a description of the respirator or
combination of respirators for which it is issued, as provided in this part.
(b) The certificate of approval shall specifically set forth any restrictions or limitations on the
respirator's use in hazardous atmospheres.
(c) Each certificate of approval shall be accompanied by the drawings and specifications (and lists
thereof) submitted by the applicant in accordance with §84.11. These drawings and specifications
shall be referenced in the certificate of approval, and shall be maintained by the applicant. The
drawings and specifications listed in each certificate of approval shall set forth in detail the design and
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construction requirements which shall be met by the applicant during commercial production of the
respirator.
(d) Each certificate of approval shall be accompanied by a reproduction of the approval label
design to be employed by the applicant with each approved respirator, as provided in §84.33.
(e) No test data or specific laboratory findings will accompany any certificate of approval,
however, the Institute will release pertinent test data and specific findings upon written request by the
applicant, or as required by statute or regulation.
(f) Each certificate of approval shall also contain the approved quality control plan as specified in
§84.42.
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§84.32 Notice of disapproval.
(a) If, upon the completion of the examinations, inspections, and tests required to be conducted in
accordance with the provisions of this part, it is found that the respirator does not meet the minimum
requirements set forth in this part, the Institute shall issue a written notice of disapproval to the
applicant.
(b) Each notice of disapproval shall be accompanied by all pertinent data or findings with respect
to the defects of the respirator for which approval was sought with a view to the possible correction of
any such defects.
(c) The Institute shall not disclose, except to the applicant or as required by statute or regulation,
any data, findings, or other information with respect to any respirator for which a notice of disapproval
is issued.
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§84.33 Approval labels and markings; approval of contents; use.
(a) Full-scale reproductions of approval labels and markings, and a sketch or description of the
method of application and position on the harness, container, canister, cartridge, filter, or other
component, together with instructions for the use and maintenance of the respirator shall be submitted
to the Institute for approval.
(b) Approval labels shall bear the emblem of the National Institute for Occupational Safety and
Health and the seal of the Department of Health and Human Services, the applicant's name and
address, an approval number assigned by the Institute and, where appropriate, restrictions or
limitations placed upon the use of the respirator by the Institute. The approval number assigned by the
Institute shall be designated by the prefix TC and a serial number.
(c) The Institute shall, where necessary, notify the applicant when additional labels, markings, or
instructions will be required.
(d) Approval labels and markings shall only be used by the applicant to whom they were issued.
(e) Legible reproductions or abbreviated forms of the label approved by the Institute for use on
each respirator shall be attached to or printed at the following locations:
Respirator type
Self-contained breathing
apparatus
Gas mask
Supplied air respirator
Label type
Location
Entire
Harness assembly and canister (where applicable).
Entire
......do
Mask container and canister.
Respirator container or instruction card.
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Chemical-cartridge
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......do
Respirator container and filter container.
Abbreviated Filters.
Entire
Respirator container, cartridge container, and filter
containers (where applicable).
Abbreviated Cartridges and filters and filter containers.
(f) The use of any Institute approval label obligates the applicant to whom it is issued to maintain
or cause to be maintained the approved quality control sampling schedule and the acceptable quality
level for each characteristic tested, and to assure that it is manufactured according to the drawings
and specifications upon which the certificate of approval is based.
(g) Each respirator, respirator component, and respirator container shall, as required by the
Institute to assure quality control and proper use of the respirator, be labeled distinctly to show the
name of the applicant, and the name and letters or numbers by which the respirator or respirator
component is designated for trade purposes, and the lot number, serial number, or approximate date
of manufacture.
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§84.34 Revocation of certificates of approval.
The Institute reserves the right to revoke, for cause, any certificate of approval issued pursuant to
the provisions of this part. Such causes include, but are not limited to, misuse of approval labels and
markings, misleading advertising, and failure to maintain or cause to be maintained the quality control
requirements of the certificate of approval.
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§84.35 Changes or modifications of approved respirators; issuance of modification of
certificate of approval.
(a) Each applicant may, if he desires to change any feature of an approved respirator, request a
modification of the original certificate of approval issued by the Institute for such respirator by filing an
application for such modification in accordance with the provisions of this section.
(b) Applications shall be submitted as for an original certificate of approval, with a request for a
modification of the existing certificate to cover any proposed change.
(c) The application shall be accompanied by appropriate drawings and specifications, and by a
proposed quality control plan which meets the requirements of subpart E of this part.
(d) The application for modification, together with the accompanying material, shall be examined
by the Institute to determine whether testing will be required.
(e) The Institute shall inform the applicant of the fee required for any additional testing and the
applicant will be charged for the actual cost of any examination, inspection, or test required, and such
fees shall be submitted in accordance with the provisions of subpart C of this part.
(f) If the proposed change or modification meets the requirements of this part, a formal certificate
of modification will be issued, accompanied, where necessary, by a list of new and revised drawings
and specifications covering the change(s) and reproductions of revised approval labels.
(The information collections contained in this section are approved under OMB control number 0920-0109)
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§84.36 Delivery of changed or modified approved respirator.
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An approved respirator for which a formal certificate of modification has been issued shall be
delivered, with proper markings and containers, by the applicant to the Certification and Quality
Assurance Branch, as soon as it is commercially produced.
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Subpart E—Quality Control
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§84.40 Quality control plans; filing requirements.
As a part of each application for approval or modification of approval submitted pursuant to this
part, each applicant shall file with the Institute a proposed quality control plan which shall be designed
to assure the quality of respiratory protection provided by the respirator for which approval is sought.
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§84.41 Quality control plans; contents.
(a) Each quality control plan shall contain provisions for the management of quality, including:
(1) Requirements for the production of quality data and the use of quality control records;
(2) Control of engineering drawings, documentations, and changes;
(3) Control and calibration of measuring and test equipment;
(4) Control of purchased material to include incoming inspection;
(5) Lot identification, control of processes, manufacturing, fabrication, and assembly work
conducted in the applicant's plant;
(6) Audit of final inspection of the completed product; and
(7) The organizational structure necessary to carry out these provisions.
(b) Each provision for incoming and final inspection in the quality control plan shall include a
procedure for the selection of a sample of respirators and the components thereof for testing, in
accordance with procedures set forth in Military Standard MIL-STD-414, 11 June 1957, including
Change Notice No. 1, “Sampling Procedures and Tables for Inspection by Variables for Percent
Defective,” or an approved equivalent sampling procedure, or an approved combination of sampling
procedures. The procedure of Military Standard MIL-STD-105D, 29 April 1963, “Sampling Procedures
and Tables for Inspection by Attributes,” is an example of an equivalent sampling procedure. MILSTD-414 is incorporated by reference and has been approved by the Director of the Federal Register
in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be obtained from DODSSP,
Standardization Document Order Desk, 700 Robbins Avenue, Bldg. 4D, Philadelphia, PA 19111-5094.
Copies may be inspected at the NIOSH, Certification and Quality Assurance Branch, 1095 Willowdale
Road, Morgantown, WV 26505-2888, or at the National Archives and Records Administration (NARA).
For information on the availability of this material at NARA, call 202-741-6030 , or go to:
http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html. Copies of
MIL-STD-105D may be inspected or obtained from the NIOSH, Certification and Quality Assurance
Branch, 1095 Willowdale Road, Morgantown, WV 26505-2888. Incoming bulk raw material inspection
or verification of specification, and in-process inspection shall be sufficient to ensure control of product
quality through the manufacturing cycle.
(c) The sampling procedure shall include a list of the characteristics to be tested by the applicant
or his agent.
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(d) The characteristics listed in accordance with paragraph (c) of this section shall be classified
according to the potential effect of such defect and grouped into the following classes:
(1) Critical. A defect that judgment and experience indicate is likely to result in a condition
immediately hazardous to life or health for individuals using or depending upon the respirator;
(2) Major A. A defect, other than critical, that is likely to result in failure to the degree that the
respirator does not provide any respiratory protection, or a defect that reduces protection and is not
detectable by the user;
(3) Major B. A defect, other than Major A or critical, that is likely to result in reduced respiratory
protection, and is detectable by the user; and
(4) Minor. A defect that is not likely to materially reduce the usability of the respirator for its
intended purpose, or a defect that is a departure from established standards and has little bearing on
the effective use or operation of the respirator.
(e) The quality control inspection test method to be used by the applicant or his agent for each
characteristic required to be tested shall be described in detail.
(f) Each item manufactured shall be 100 percent inspected for defects in all critical characteristics
and all defective items shall be rejected.
(g) The Acceptable Quality Level (AQL) for each major or minor defect so classified by the
applicant shall be:
(1) Major A. 1.0 percent;
(2) Major B. 2.5 percent; and
(3) Minor. 4.0 percent.
(h) Except as provided in paragraph (i) of this section, inspection level IV as described in MILSTD-414, 11 June 1957, including Change Notice No.1, “Sampling Procedures and Tables for
Inspection by Variables for Percent Defective,” or an equivalent procedure, shall be used for major and
minor characteristics and 100 percent inspection for critical characteristics. Inspection level II as
described in MIL-STD-105D, 29 April 1963, “Sampling Procedures and Tables for Inspection by
Attributes,” is an example of an equivalent procedure.
(i) Subject to the approval of the Institute, where the quality control plan provisions for raw
material, processes, manufacturing, and fabrication, inspections are adequate to ensure control of
finished article quality, destructive testing of finished articles may be conducted at a lower level of
inspection than that specified in paragraph (h) of this section.
(The information collections contained in this section are approved under OMB control number 0920-0109)
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§84.42 Proposed quality control plans; approval by the Institute.
(a) Each proposed quality control plan submitted in accordance with this subpart shall be
reviewed by the Institute to determine its effectiveness in ensuring the quality of respiratory protection
provided by the respirator for which an approval is sought.
(b) If the Institute determines that the proposed quality control plan submitted by the applicant will
not ensure adequate quality control, the Institute shall require the applicant to modify the procedures
and testing requirements of the plan prior to approval of the plan and issuance of any certificate of
approval.
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(c) Approved quality control plans shall constitute a part of and be incorporated into any certificate
of approval issued by the Institute, and compliance with such plans by the applicant shall be a
condition of approval.
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§84.43 Quality control records; review by the Institute; revocation of approval.
(a) The applicant shall keep quality control inspection records sufficient to carry out the
procedures required in MIL-STD-414, 11 June 1957, including Change Notice No. 1, “Sampling
Procedures and Tables for Inspection by Variables for Percent Defective,” or an approved equivalent
sampling procedure. MIL-STD-105D, 29 April 1963, “Sampling Procedures and Tables for Inspection
by Attributes,” is an example of an approved equivalent sampling procedure. MIL-STD-414 is
incorporated by reference and has been approved by the Director of the Federal Register in
accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be obtained from DODSSP,
Standardization Document Order Desk, 700 Robbins Avenue, Bldg. 4D, Philadelphia, Pa. 19111-5094.
Copies may be inspected at the NIOSH, Certification and Quality Assurance Branch, 1095 Willowdale
Road, Morgantown, WV 26505-2888, or at the National Archives and Records Administration (NARA).
For information on the availability of this material at NARA, call 202-741-6030 , or go to:
http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html. Copies of
MIL-STD-105D may be inspected or obtained from the NIOSH, Certification and Quality Assurance
Branch, 1095 Willowdale Road, Morgantown, WV 26505-2888.
(b) The Institute reserves the right to have its representatives inspect the applicant's quality
control test methods, equipment, and records, and to interview any employee or agent of the applicant
in regard to quality control test methods, equipment, and records.
(c) The Institute reserves the right to revoke, for cause, any certificate of approval where it is
found that the applicant's quality control test methods, equipment, or records do not ensure effective
quality control over the respirator for which the approval was issued.
(The information collections contained in this section are approved under OMB control number 0920-0109)
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Subpart F—Classification of Approved Respirators; Scope of Approval;
Atmospheric Hazards; Service Time
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§84.50 Types of respirators to be approved; scope of approval.
Approvals shall be issued for the types of respirators which have been classified pursuant to this
subpart F, have been inspected, examined and tested by the Institute, in accordance with the
provisions of subparts G through L of this part, and have been found to provide respiratory protection
for fixed periods of time against the hazards specified in such approval.
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§84.51 Entry and escape, or escape only; classification.
Respirators described in subparts H through L of this part shall be classified for use as follows:
(a) Entry and escape. Respirators designed and approved for use during entry into a hazardous
atmosphere, and for escape from a hazardous atmosphere; or
(b) Escape only. Respirators designed and approved for use only during escape from a
hazardous atmosphere.
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§84.52 Respiratory hazards; classification.
Respirators described in subparts H through L of this part shall be classified as approved for use
against any or all of the following respiratory hazards:
(a) Oxygen deficiency;
(b) Gases and vapors; and
(c) Particles, including dusts, fumes and mists.
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§84.53 Service time; classification.
(a) Respirators described in subparts H through L of this part shall be classified, where applicable,
as approved for use during the following prescribed service times:
(1) Four hours;
(2) Three hours;
(3) Two hours;
(4) One hour;
(5) Forty-five minutes;
(6) Thirty minutes;
(7) Fifteen minutes;
(8) Ten minutes;
(9) Five minutes; or
(10) Three minutes.
(b) Other service times may be prescribed by the Institute.
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Subpart G—General Construction and Performance Requirements
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§84.60 Construction and performance requirements; general.
(a) The Institute shall issue approvals for the types of respirators described in subparts H through
KK of this part which have met the minimum requirements set forth for such respirators in this part.
(b) In addition to the types of respirators specified in subparts H through L of this part, the Institute
shall issue approvals for other respiratory protective devices not specifically described in this part
subject to such additional requirements as may be imposed in accordance with §84.63(c).
[60 FR 30355, June 8, 1995, as amended at 77 FR 14192, Mar. 8, 2012]
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§84.61 General construction requirements.
(a) Respirators will not be accepted by the Institute for examination, inspection and testing unless
they are designed on sound engineering and scientific principles, constructed of suitable materials and
evidence good workmanship.
(b) Respirator components which come into contact with the wearer's skin shall be made of
nonirritating materials.
(c) Components replaced during or after use shall be constructed of materials which will not be
damaged by normal handling.
(d) Mouthpieces, hoods, helmets, and facepieces, except those employed in single-use
respirators, shall be constructed of materials which will withstand repeated disinfection as
recommended by the applicant in his instructions for use of the device.
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§84.62 Component parts; minimum requirements.
(a) The component parts of each respirator shall be:
(1) Designed, constructed, and fitted to insure against creation of any hazard to the wearer;
(2) Assembled to permit easy access for inspection and repair of functional parts; and
(3) Assembled to permit easy access to parts which require periodic cleaning and disinfecting.
(b) Replacement parts shall be designed and constructed to permit easy installation and to
maintain the effectiveness of the respirator.
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§84.63 Test requirements; general.
(a) Each respirator and respirator component shall when tested by the applicant and by the
Institute, and meet the applicable requirements set forth in subparts H through KK of this part.
(b) Where a combination respirator is assembled from two or more types of respirators, as
described in this part, each of the individual respirator types which have been combined shall, as
applicable, meet the minimum requirements for such respirators set forth in subparts H through KK of
this part, and such combination respirators, except as specified in §84.70(b)(2), will be classified by
the type of respirator in the combination which provides the least protection to the user.
(c) In addition to the minimum requirements set forth in subparts H through KK of this part, the
Institute reserves the right to require, as a further condition of approval, any additional requirements
deemed necessary to establish the quality, effectiveness, and safety of any respirator used as
protection against hazardous atmospheres.
(d) Where it is determined after receipt of an application that additional requirements will be
required for approval, the Institute will notify the applicant in writing of these additional requirements,
and necessary examinations, inspections, or tests, stating generally the reasons for such
requirements, examinations, inspections, or tests.
[60 FR 30355, June 8, 1995, as amended at 77 FR 14192, Mar. 8, 2012]
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§84.64 Pretesting by applicant; approval of test methods.
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(a) Prior to making or filing any application for approval or modification of approval, the applicant
shall conduct, or cause to be conducted, examinations, inspections, and tests of respirator
performance which are equal to or exceed the severity of those prescribed in this part.
(b) With the application, the applicant shall provide a statement to the Institute showing the types
and results of the examinations, inspections, and tests required under paragraph (a) of this section
and state that the respirator meets the minimum requirements of subparts H through KK of this part, as
applicable. Complete examination, inspection, and test data shall be retained on file by the applicant
and be submitted, upon request, to the Institute.
(c) The Institute may, upon written request by the applicant, provide drawings and descriptions of
its test equipment and otherwise assist the applicant in establishing a test laboratory or securing the
services of a testing agency.
(d) No approval will be issued until the Institute has validated the applicant's test results.
[60 FR 30355, June 8, 1995, as amended at 77 FR 14193, Mar. 8, 2012]
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§84.65 Conduct of examinations, inspections, and tests by the Institute; assistance by
applicant; observers; recorded data; public demonstrations.
(a) All examinations, inspections, and tests conducted pursuant to subparts H through KK of this
part will be under the sole direction and control of the Institute.
(b) The Institute may, as a condition of approval, require the assistance of the applicant or agents
of the applicant during the assembly, disassembly, or preparation of any respirator or respirator
component prior to testing or in the operation of such equipment during testing.
(c) Only Institute personnel, persons assisting the Institute pursuant to paragraph (b) of this
section, and such other persons as are requested by the Institute or the applicant to be observers,
shall be present during any examination, inspection, or test conducted prior to the issuance of an
approval by the Institute for the equipment under consideration.
(d) The Institute shall hold as confidential any analyses, drawings, specifications, or materials
submitted by the applicant and shall not disclose any principles or patentable features of such
equipment, except as required by statute or regulation.
(e) As a condition of each approval issued for any respirator, the Institute reserves the right,
following the issuance of such approval, to conduct such public tests and demonstrations of the
approved respiratory equipment as is deemed appropriate.
[60 FR 30355, June 8, 1995, as amended at 77 FR 14193, Mar. 8, 2012]
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§84.66 Withdrawal of applications; refund of fees.
(a) Any applicant may, upon a written request submitted to the Institute, withdraw any application
for approval of any respirator.
(b) Upon receipt of a written request for the withdrawal of an application, the Institute shall
determine the total man-days expended and the amount due for services already performed during the
course of any examinations, inspections, or tests conducted pursuant to such application. The total
amount due shall be determined in accordance with the provisions of §84.22 and assessed against the
fees submitted by the applicant. If the total amount assessed is less than the fees submitted, the
Institute shall refund the balance together with a statement of the charges made for services rendered.
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Subpart H—Self-Contained Breathing Apparatus
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§84.70 Self-contained breathing apparatus; description.
(a) Limitation on scope. None of the provisions of Subpart H apply to closed-circuit escape
respirators to be approved specifically for escape only from hazardous atmospheres, except as
provided for under §84.304(a)(5). Such respirators are covered under the provisions of subpart O of
this part.
(b) Self-contained breathing apparatus, including all completely assembled, portable, selfcontained devices designed for use as respiratory protection during entry into and escape from or
escape only from hazardous atmospheres, are described as follows:
(1) Closed-circuit apparatus. An apparatus of the type in which the exhalation is rebreathed by the
wearer after the carbon dioxide has been effectively removed and a suitable oxygen concentration
restored from sources composed of:
(i) Compressed oxygen; or
(ii) Chemical oxygen; or
(iii) Liquid-oxygen.
(2) Open-circuit apparatus. An apparatus of the following types from which exhalation is vented to
the atmosphere and not rebreathed:
(i) Demand-type apparatus. An apparatus in which the pressure inside the facepiece in relation to
the immediate environment is positive during exhalation and negative during inhalation; or
(ii) Pressure-demand-type apparatus. An apparatus in which the pressure inside the facepiece in
relation to the immediate environment is positive during both inhalation and exhalation.
(c) The following respirators may be classified as designed and approved for use during
emergency entry into a hazardous atmosphere:
(1) A combination respirator which includes a self-contained breathing apparatus; and
(2) A Type “C” or Type “CE” supplied air respirator, where—
(i) The self-contained breathing apparatus is classified for 3-, 5-, or 10-minute service time and
the air line supply is used during entry; or
(ii) The self-contained breathing apparatus is classified for 15 minutes or longer service time and
not more than 20 percent of the rated capacity of the air supply is used during entry.
(d) Self-contained breathing apparatus classified for less than 1 hour service time will not be
approved for use during underground mine rescue and recovery operations except as auxiliary
equipment.
(e) Self-contained breathing apparatus classified for less than 30 minutes' service time will not be
approved for use as auxiliary equipment during underground mine rescue and recovery operations.
[60 FR 30355, June 8, 1995, as amended at 77 FR 14193, Mar. 8, 2012]
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§84.71 Self-contained breathing apparatus; required components.
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(a) Each self-contained breathing apparatus described in §84.70 shall, where its design requires,
contain the following component parts:
(1) Facepiece or mouthpiece, and noseclip;
(2) Respirable breathing gas container;
(3) Supply of respirable breathing gas;
(4) Gas pressure or liquid level gages;
(5) Timer;
(6) Remaining service life indicator or warning device;
(7) Hand-operated valves;
(8) Breathing bag;
(9) Safety relief valve or safety relief system; and
(10) Harness.
(b) The components of each self-contained breathing apparatus shall meet the minimum
construction requirements set forth in subpart G of this part.
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§84.72 Breathing tubes; minimum requirements.
Flexible breathing tubes used in conjunction with breathing apparatus shall be designed and
constructed to prevent:
(a) Restriction of free head movement;
(b) Disturbance of the fit of facepieces and mouthpieces;
(c) Interference with the wearer's activities; and
(d) Shutoff of airflow due to kinking, or from chin or arm pressure.
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§84.73 Harnesses; installation and construction; minimum requirements.
(a) Each apparatus shall, where necessary, be equipped with a suitable harness designed and
constructed to hold the components of the apparatus in position against the wearer's body.
(b) Harnesses shall be designed and constructed to permit easy removal and replacement of
apparatus parts and, where applicable, provide for holding a full facepiece in the ready position when
not in use.
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§84.74 Apparatus containers; minimum requirements.
(a) Apparatus may be equipped with a substantial, durable container bearing markings which
show the applicant's name, the type and commercial designation of the respirator it contains, and all
appropriate approval labels.
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(b) Containers supplied by the applicant for carrying or storing self-contained breathing apparatus
will be inspected, examined, and tested as components of the respirator for which approval is sought.
(c) Containers for self-contained breathing apparatus shall be designed and constructed to permit
easy removal of the apparatus.
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§84.75 Half-mask facepieces, full facepieces, mouthpieces; fit; minimum requirements.
(a) Half-mask facepieces and full facepieces shall be designed and constructed to fit persons with
various facial shapes and sizes, either:
(1) By providing more than one facepiece size; or
(2) By providing one facepiece size which will fit varying facial shapes and sizes.
(b) Full facepieces shall provide for the optional use of corrective spectacles or lenses which shall
not reduce the respiratory protective qualities of the apparatus.
(c) Apparatus with mouthpieces shall be equipped with noseclips which are securely attached to
the mouthpiece or apparatus and provide an airtight seal.
(d) Facepieces shall be designed to prevent eyepiece, spectacle, and lens fogging.
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§84.76 Facepieces; eyepieces; minimum requirements.
(a) Facepieces shall be designed and constructed to provide adequate vision which is not
distorted by the eyepiece.
(b) All eyepieces shall be designed and constructed to be impact and penetration resistant.
Federal Specification, Mask, Air Line: and Respirator, Air Filtering, Industrial, GGG-M-125d, October
11, 1965 with interim amendment-1, July 30, 1969, is an example of an appropriate standard for
determining impact and penetration resistance. Copies of GGG-M-125d may be obtained from the
NIOSH, Certification and Quality Assurance Branch, 1095 Willowdale Road, Morgantown, WV 265052888.
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§84.77 Inhalation and exhalation valves; minimum requirements.
(a) Inhalation and exhalation valves shall be provided where necessary and protected against
damage and distortion.
(b) Exhalation valves shall be—
(1) Protected against external influence; and
(2) Designed and constructed to prevent inward leakage of contaminated air.
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§84.78 Head harnesses; minimum requirements.
(a) Facepieces shall be equipped with adjustable and replaceable head harnesses designed and
constructed to provide adequate tension during suspension and an even distribution of pressure over
the entire area in contact with the face.
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(b) Mouthpieces shall be equipped, where applicable, with adjustable and replaceable harnesses
designed and constructed to hold the mouthpiece in place.
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§84.79 Breathing gas; minimum requirements.
(a) Breathing gas used to supply apparatus shall be respirable and contain no less than 19.5 (dry
atmosphere) volume percent of oxygen.
(b) Oxygen, including liquid oxygen, shall contain not less than 99.0 percent, by volume, of pure
O2, not more than 0.03%, by volume, carbon dioxide, and not more than 0.001%, by volume, carbon
monoxide. Methods for making these determinations can be found in the U.S. Pharmacopeia National
Formulary. Containers used for oxygen must not be treated with any toxic, sleep-inducing, narcosisproducing, or respiratory tract irritating compounds.
(c) Compressed, gaseous breathing air shall meet the applicable minimum grade requirements for
Type I gaseous air set forth in the Compressed Gas Association Commodity Specification for Air,
G-7.1, 1966 (Grade D or higher quality). G-7.1 is incorporated by reference and has been approved by
the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies
may be obtained from American National Standards Institute, Inc., 1430 Broadway, New York, NY
10018. Copies may be inspected at the NIOSH, Certification and Quality Assurance Branch, 1095
Willowdale Road, Morgantown, WV 26505-2888, or at the National Archives and Records
Administration (NARA). For information on the availability of this material at NARA, call
202-741-6030 , or go to:
http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.
(d) Compressed, liquefied breathing air shall meet the applicable minimum grade requirements for
Type II liquid air set forth in the Compressed Gas Association Commodity Specification for Air, G-7.1,
1966 (Grade B or higher quality). G-7.1 is incorporated by reference and has been approved by the
Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may
be obtained from American National Standards Institute, Inc., 1430 Broadway, New York, NY 10018.
Copies may be inspected at the NIOSH, Certification and Quality Assurance Branch, 1095 Willowdale
Road, Morgantown, WV 26505-2888, or at the National Archives and Records Administration (NARA).
For information on the availability of this material at NARA, call 202-741-6030 , or go to:
http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.
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§84.80 Interchangeability of oxygen and air prohibited.
Approvals shall not be issued by the Institute for any apparatus, combination of respirator
assemblies, or any apparatus or respirator component which is designed or constructed to permit the
interchangeable use of oxygen and air.
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§84.81 Compressed breathing gas and liquefied breathing gas containers; minimum
requirements.
(a) Compressed breathing gas and liquefied breathing gas containers shall meet the minimum
requirements of the Department of Transportation for interstate shipment of such containers when fully
charged.
(b) Such containers shall be permanently and legibly marked to identify their contents, e.g.,
compressed breathing air, compressed breathing oxygen, liquefied breathing air, or liquefied breathing
oxygen.
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(c) Containers normally removed from apparatus for refilling shall be equipped with a dial
indicating gage which shows the pressure in the container.
(d) Compressed breathing gas contained valves or a separate charging system or adapter
provided with each apparatus shall be equipped with outlet threads specified for the service by the
American Standards Association, Compressed Gas Cylinder Valve Outlet and Inlet Connections,
B57.1-1965. B57.1-1965 is incorporated by reference and has been approved by the Director of the
Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be obtained from
American National Standards Institute, Inc., 1430 Broadway, New York, NY Copies may be inspected
at the NIOSH, Certification and Quality Assurance Branch, 1095 Willowdale Road, Morgantown, WV
26505-2888, or at the National Archives and Records Administration (NARA). For information on the
availability of this material at NARA, call 202-741-6030 , or go to:
http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.
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§84.82 Gas pressure gages; minimum requirements.
(a) Gas pressure gages employed on compressed breathing gas containers shall be calibrated in
pounds per square inch.
(b) Liquid-level gages shall be calibrated in fractions of total container capacity, or in units of liquid
volume.
(c) Gas pressure gages other than those specified in paragraphs (a) and (b) of this section shall
be calibrated in:
(1) Pounds per square inch; or
(2) In fractions of total container capacity; or
(3) Both in pounds per square inch and fractions of total container capacity.
(d)(1) Dial-indicating gages shall be reliable to within ±5 percent of full scale when tested both up
and down the scale at each of 5 equal intervals.
(2) The full-scale graduation of dial-indicating gages shall not exceed 150 percent of the
maximum rated cylinder pressures specified for the container in applicable Department of
Transportation specifications or permits.
(e)(1) Stem-type gages shall be readable by sight and by touch and shall have a stem travel
distance of not less than one-fourth inch between each graduation.
(2) A minimum of five graduations shall be engraved on the stem of each gage and these
graduations shall include readings for empty, one-quarter, one-half, three-quarters, and full.
(3) Stem gage readings shall not vary from true readings by more than one-sixteenth inch per inch
of stem travel.
(f) The loss of gas through a broken gage or severed gage connection shall not exceed 70 liters
per minute when the cylinder pressure is 6,900 kN/m.2 (1,000 pounds per square inch gage) or when
the liquid level is at one-half.
(g) Where gages are connected to the apparatus through a gage line, the gage and line shall be
capable of being isolated from the apparatus except where the failure of the gage or line would not
impair the performance or service life of the apparatus.
(h) Oxygen pressure gages shall have the words “Oxygen” and “Use No Oil” marked prominently
on the gage.
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(i)(1) Apparatus using compressed breathing gas, except apparatus classified for escape only,
shall be equipped with gages visible to the wearer which indicate the remaining gas content in the
container.
(2) Apparatus using liquefied breathing gas, except apparatus classified for escape only, shall be
equipped with gages visible to the wearer which indicate the remaining liquid content in the container;
however, where the liquid content cannot be rapidly vented, and the service time of the device begins
immediately after filling, a timer shall be provided in place of a visible gage.
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§84.83 Timers; elapsed time indicators; remaining service life indicators; minimum
requirements.
(a) Elapsed time indicators shall be provided for apparatus with a chemical oxygen source,
except:
(1) Apparatus used for escape only; or
(2) Liquefied breathing gas apparatus equipped with gages visible to the wearer which indicate
the remaining liquid content in the container.
(b) The timer or other indicator shall be accurately calibrated in minutes of remaining service life.
(c) Timers shall be readable by sight and by touch during use by the wearer.
(d) Timers shall be equipped with automatically preset alarms which will warn the wearer for a
period of 7 seconds or more after the preset time has elapsed.
(e) Remaining service-life indicators or warning devices shall be provided in addition to a pressure
gage on compressed gas self-contained breathing apparatus, except apparatus used for escape only,
and shall operate automatically without preadjustment by the wearer.
(f) Each remaining service-life indicator or warning device must give an alarm when the remaining
service life is reduced to a minimum of 25 percent of its rated service time or any higher minimum
percent value or values as specified in the approval. Open-circuit demand and pressure-demand
respirators must alarm continuously until depletion of the breathing air supply. The percent value set
for indicator activation must be identified by labels and/or markings on each respirator unit.
[60 FR 30355, June 8, 1995, as amended at 78 FR 2622, Jan. 14, 2013]
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§84.84 Hand-operated valves; minimum requirements.
(a) Hand-operated valves shall be designed and constructed to prevent removal of the stem from
the valve body during normal usage to insure against a sudden release of the full pressure of the
container when the valve is opened.
(b) Valves shall be designed or positioned to prevent accidental opening and closing, and damage
from external forces.
(c) Valves operated during use of the apparatus shall be installed in locations where they can be
readily adjusted by the wearer.
(d) Main-line valves, designed and constructed to conserve gas in the event of a regulator or
demand valve failure, shall be provided in addition to gas container valves, except when such failure
will not affect performance.
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(e) Hand-operated bypass systems designed and constructed to permit the wearer to breathe and
to conserve his gas supply in the event of a regulator or demand valve failure, shall be provided where
necessary.
(f) Valves installed on apparatus shall be clearly distinguishable from one another by sight and
touch.
(g) The bypass system valve control shall be colored red.
(h) A main-line or bypass valve or system will not be required on apparatus for escape only.
(i) Safety relief valves or systems, designed and constructed to release excess pressure in the
breathing circuit, shall be provided on closed-circuit apparatus, and shall meet the following
requirements:
(1) The relief valve or system shall operate automatically when the pressure in the breathing
circuit on the inhalation side of the breathing bag reaches 13 mm. (one-half inch) water-column height
of pressure above the minimum pressure required to fill the breathing bag, within the breathing
resistance requirements for the apparatus.
(2) The relief valve or system shall be designed to prevent external atmospheres from entering
the breathing circuit.
(3) The relief valve or system shall be designed to permit manual overriding for test purposes and
in the event of a failure in the valve or system.
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§84.85 Breathing bags; minimum requirements.
(a) Breathing bags shall have sufficient volume to prevent gas waste during exhalation and to
provide an adequate reserve for inhalation.
(b) Breathing bags shall be constructed of materials which are flexible and resistant to gasoline
vapors.
(c) Breathing bags shall be installed in a location which will protect them from damage or collapse
by external forces, except on apparatus classified for escape only.
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§84.86 Component parts exposed to oxygen pressures; minimum requirements.
Each applicant shall certify that the materials employed in the construction of component parts
exposed to oxygen pressures above atmospheric pressure are safe and compatible for their intended
use.
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§84.87 Compressed gas filters; minimum requirements.
All self-contained breathing apparatus using compressed gas shall have a filter downstream of the
gas source to effectively remove particles from the gas stream.
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§84.88 Breathing bag test.
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(a) Breathing bags will be tested in an air atmosphere saturated with gasoline vapor at room
temperature (24-30 °C./75-85 °F.) for a continuous period of twice the rated time of the apparatus
(except for apparatus for escape only where the test period shall be the rated time of the apparatus).
(b) The bag will be operated during this test by a breathing machine with 24 respirations per
minute and a minute-volume of 40 liters.
(c) A breathing machine cam with a work rate of 622 kp.-m./min. will be used. The dimensions of a
suitable breathing machine cam are available from the Institute upon request.
(d) The air within the bag(s) shall not contain more than 100 parts per million of gasoline vapor at
the end of the test.
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§84.89 Weight requirement.
(a) The completely assembled and fully charged apparatus shall not weigh more than 16 kg. (35
pounds); however, where the weight decreases by more than 25 percent of its initial charge weight
during its rated service life, the maximum allowable weight of a completely assembled and fully
charged apparatus shall be 18 kg. (40 pounds).
(b) Where an apparatus employs equipment which contributes materially to the wearer's comfort,
e.g., a cooling system, the completely assembled and fully charged apparatus shall not weigh more
than 18 kg. (40 pounds) regardless of the decrease in weight during use.
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§84.90 Breathing resistance test; inhalation.
(a) Resistance to inhalation airflow will be measured in the facepiece or mouthpiece while the
apparatus is operated by a breathing machine as described in §84.88.
(b) The inhalation resistance of open-circuit apparatus shall not exceed 32 mm. (1.25 inch) watercolumn height (at a flow rate of 120 liters per minute).
(c) The inhalation resistance of closed-circuit apparatus shall not exceed the difference between
exhalation resistance (§84.91(e)) and 10 cm. (4 inches) water-column height.
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§84.91 Breathing resistance test; exhalation.
(a) Resistance to exhalation airflow will be measured in the facepiece or mouthpiece of opencircuit apparatus with air flowing at a continuous rate of 85 liters per minute.
(b) The exhalation resistance of demand apparatus shall not exceed 25 mm. (1 inch) watercolumn height.
(c) The exhalation resistance of pressure-demand apparatus shall not exceed the static pressure
in the facepiece by more than 51 mm. (2 inches) water-column height.
(d) The static pressure (at zero flow) in the facepiece shall not exceed 38 mm. (1.5 inches) watercolumn height.
(e) Resistance to exhalation airflow will be measured in the facepiece or mouthpiece of closedcircuit apparatus with a breathing machine as described in §84.88, and the exhalation resistance shall
not exceed 51 mm. (2 inches) water-column height.
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§84.92 Exhalation valve leakage test.
(a) Dry exhalation valves and valve seats will be subjected to a suction of 25 mm. (1 inch) watercolumn height while in a normal operating position.
(b) Leakage between the valve and the valve seat shall not exceed 30 milliliters per minute.
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§84.93 Gas flow test; open-circuit apparatus.
(a) A static-flow test will be performed on all open-circuit apparatus.
(b) The flow from the apparatus shall be greater than 200 liters per minute when the pressure in
the facepiece of demand-apparatus is lowered by 51 mm. (2 inches) water-column height when full
container pressure is applied.
(c) Where pressure demand apparatus are tested, the flow will be measured at zero gage
pressure in the facepiece.
(d) Where apparatus with compressed-breathing-gas containers are tested, the flow test shall also
be made with 3,450 kN/m.2 (500 p.s.i.g.) container pressure applied.
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§84.94 Gas flow test; closed-circuit apparatus.
(a) Where oxygen is supplied by a constant-flow device only, the rate of flow shall be at least 3
liters per minute for the entire rated service time of the apparatus.
(b) Where constant flow is used in conjunction with demand flow, the constant flow shall be
greater than 1.5 liters per minute for the entire rated service time.
(c) All demand-flow devices shall provide at least 30 liters of oxygen per minute when in the fully
open position.
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§84.95 Service time test; open-circuit apparatus.
(a) Service time will be measured with a breathing machine as described in §84.88.
(b) The open-circuit apparatus will be classified according to the length of time it supplies air or
oxygen to the breathing machine.
(c) The service time obtained on this test will be used to classify the open-circuit apparatus in
accordance with §84.53.
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§84.96 Service time test; closed-circuit apparatus.
(a) The closed-circuit apparatus will be classified according to the length of time it supplies
adequate breathing gas to the wearer during man test No. 4 described in Table 4 of this subpart.
(b) The service time obtained on man test No. 4 will be used to classify the closed-circuit
apparatus in accordance with §84.53.
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§84.97 Test for carbon dioxide in inspired gas; open- and closed-circuit apparatus; maximum
allowable limits.
(a) Open-circuit apparatus. (1) The concentration of carbon dioxide in inspired gas in open-circuit
apparatus will be measured at the mouth while the apparatus mounted on a dummy head is operated
by a breathing machine. An acceptable method for measuring the concentration of carbon dioxide is
described in Bureau of Mines Report of Investigations 6865, A Machine-Test Method for Measuring
Carbon Dioxide in the Inspired Air of Self-Contained Breathing Apparatus, 1966. Copies of Report of
Investigations 6865 may be inspected or obtained from the NIOSH, Certification and Quality
Assurance Branch, 1095 Willowdale Road, Morgantown, WV. 26505-2888.
(2) The breathing rate will be 14.5 respirations per minute with a minute-volume of 10.5 liters.
(3) A sedentary breathing machine cam will be used.
(4) The apparatus will be tested at a temperature of 27 ±2 °C. (80 ±5 °F.).
(5) A concentration of 5 percent carbon dioxide in air will be exhaled into the facepiece.
(b) Closed-circuit apparatus. The concentration of carbon dioxide in inspired gas in closed-circuit
apparatus will be measured at the mouth while the parts of the apparatus contributing to dead-air
space are mounted on a dummy head and operated by the breathing machine as in paragraphs (a) (1)
through (5) of this section.
(c) During the testing required by paragraphs (a) and (b) of this section, the concentration of
carbon dioxide in inspired gas at the mouth will be continuously recorded, and the maximum average
concentration during the inhalation portion of the breathing cycle shall not exceed the following limits:
Where the service
time is
Not more than 30
minutes
1 hour
2 hours
3 hours
4 hours
Maximum allowable average concentration of carbon dioxide in inspired
air percent by volume
2.5
2.0
1.5
1.0
1.0
(d) In addition to the test requirements for closed-circuit apparatus set forth in paragraph (b) of
this section, gas samples will be taken during the course of the man tests described in Tables 1, 2, 3,
and 4 of this subpart. These gas samples will be taken from the closed-circuit apparatus at a point
downstream of the carbon dioxide sorbent, and they shall not contain more than 0.5 percent carbon
dioxide at any time, except on apparatus for escape only, using a mouthpiece only, the sample shall
not contain more than 1.5 percent carbon dioxide at any time.
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§84.98 Tests during low temperature operation.
(a) The applicant shall specify the minimum temperature for safe operation and two persons will
perform the tests described in paragraphs (c) and (d) of this section, wearing the apparatus according
to applicant's directions. At the specified temperature, the apparatus shall meet all the requirements
described in paragraph (e) of this section.
(b) The apparatus will be precooled at the specified minimum temperature for 4 hours.
(c) The apparatus will be worn in the low temperature chamber for 30 minutes, or for the service
time of the apparatus, whichever is less.
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(d) During the test period, alternate 1-minute periods of exercise and rest will be required with the
exercise periods consisting of stepping onto and off a box 21.5 cm. (81⁄2 inches) high at a rate of 30
cycles per minute.
(e)(1) The apparatus shall function satisfactorily at the specified minimum temperature on
duplicate tests.
(2) The wearer shall have sufficient unobscured vision to perform the work.
(3) The wearer shall not experience undue discomfort because of airflow restriction or other
physical or chemical changes in the operation of the apparatus.
(f) Auxiliary low-temperature parts which are commercially available to the user may be used on
the apparatus to meet the requirements described in paragraph (e) of this section.
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§84.99 Man tests; testing conditions; general requirements.
(a) The man tests described in Tables 1, 2, 3, and 4 of this subpart represent the workload
performed in the mining, mineral, or allied industries by a person wearing the apparatus tested.
(b) The apparatus tested will be worn by Institute personnel trained in the use of self-contained
breathing apparatus, and the wearer will, before participating in these tests, pass a physical
examination conducted by a qualified physician.
(c) All man tests will be conducted by the Institute.
(d) The apparatus will be examined before each man test to ensure that it is in proper working
order.
(e) Breathing resistance will be measured within the facepiece or mouthpiece and the wearer's
pulse and respiration rate will be recorded during each 2 minute sample period prescribed in tests 1, 2,
3, and 4.
(f) Man tests 1, 2, 3, 4, 5, and 6 will be conducted in duplicate.
(g) If man tests are not completed through no fault of the apparatus, the test will be repeated.
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§84.100 Man tests 1, 2, 3, and 4; requirements.
Man tests 1, 2, 3, and 4, set forth in Tables 1, 2, 3, and 4 of this subpart, respectively, prescribe
the duration and sequence of specific activities. These tests will be conducted to—
(a) Familiarize the wearer with the apparatus during use;
(b) Provide for a gradual increase in activity;
(c) Evaluate the apparatus under different types of work and physical orientation; and
(d) Provide information on the operating and breathing characteristics of the apparatus during
actual use.
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§84.101 Man test 5; requirements.
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(a) Test 5 will be conducted to determine the maximum length of time the apparatus will supply
the respiratory needs of the wearer while he is sitting at rest.
(b) The wearer will manipulate the devices controlling the supply of breathing gas to the
advantage of the apparatus.
(c) Samples of inspiration from within the apparatus facepiece or mouthpiece shall be taken once
every 15 minutes, and shall meet the minimum requirement for oxygen specified in §84.79(a), and the
maximum allowable average concentration of carbon dioxide specified in §84.97(c).
(d) One sample of inspiration will be taken in the case of 3-, 5-, and 10-minute apparatus.
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§84.102 Man test 6; requirements.
(a) Man test 6 will be conducted with respect to liquefied breathing gas apparatus only.
(b) This test will be conducted to evaluate operation of the apparatus in other than vertical
positions.
(c) The wearer will lie face downward for one-fourth the service life of the apparatus with a full
charge of liquefied breathing gas, and then a one-quarter full charge of liquefied breathing gas.
(d) The test will be repeated with the wearer lying on each side and on his back.
(e) The oxygen content of the gas supplied to the wearer by the apparatus will be continuously
measured.
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§84.103 Man tests; performance requirements.
(a) The apparatus shall satisfy the respiratory requirements of the wearer for the classified service
time.
(b) Fogging of the eyepiece shall not obscure the wearer's vision, and the wearer shall not
experience undue discomfort because of fit or other characteristics of the apparatus.
(c) When the ambient temperature during testing is 24 ±6 °C. (75 ±10 °F.), the maximum
temperature of inspired air recorded during man tests shall not exceed the following, after correction
for deviation from 24 °C. (75 °F.):
Where service life of
apparatus is—
1/4 hour or less
1/4 hour to 3/4 hour
Where percent relative
humidity of inspired air is—
0-100
0-50
50-100
1 to 2 hours
0-50
50-100
3 hours
0-50
50-100
4 hours
0-50
50-100
Maximum permissible temperature of
inspired air shall not exceed—
°F.
°C.
135
57
52
125
1
1
110
43
46
115
1
1
105
41
43
110
1
1
100
38
41
105
1
1
95
35
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1
Where percent relative humidity is 50-100 and apparatus is designed for escape only, these
maximum permissible temperatures will be increased by 5 °C (10 °F).
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§84.104 Gas tightness test; minimum requirements.
(a) Each apparatus will be tested for tightness by persons wearing it in an atmosphere of 1,000
p.p.m. isoamyl acetate.
(b) Six persons will each wear the apparatus in the test concentrations specified in paragraph (a)
of this section for 2 minutes and none shall detect the odor or taste of the test vapor.
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Tables to Subpart H of Part 84
TABLE 1—DURATION AND SEQUENCE OF SPECIFIC ACTIVITIES FOR TEST 1, IN MINUTES
[42 CFR part 84, subpart H]
Service time—
3
5
10
15
30
45
1
Activity
minutes minutes minutes minutes minutes minutes hour 2, 3, and 4 hours
Sampling and
2
2
2
2 Perform 1 hour test
readings
2, 3, or 4 times
respectively.
3
5
3
4
8
12
18
Walks at 4.8
km. (3 miles)
per hour
Sampling and
2
2
2
2
2
readings
3
5
8
12
18
Walks at 4.8
km. (3 miles)
per hour
Sampling and
2
2
2
2
2
readings
6
13
16
Walks at 4.8
km. (3 miles)
per hour
Sampling and
2
2
2
readings
TABLE 2—DURATION AND SEQUENCE OF SPECIFIC ACTIVITIES FOR TEST 2, IN MINUTES
[42 CFR part 84, subpart H]
Service time—
2, 3 and 4
3
5
10
15
30
45
minutes minutes minutes minutes minutes minutes 1 hour
hours1
Activity
Sampling and
2
2
2
2
2
readings
Walks at 4.8 km.
1
1
3
4
6
10.
(3 miles) per hour
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Carries 23 kg. (50
pound) weight
over overcast
Walks at 4.8 km.
(3 miles) per hour
Climbs vertical
treadmill2 (or
equivalent)
Walks at 4.8 km.
(3 miles) per hour
Climbs vertical
treadmill (or
equivalent)
Sampling and
readings
Walks at 4.8 km.
(3 miles) per hour
Climbs vertical
treadmill (or
equivalent)
Carries 23 kg. (50
pound) weight
over overcast
Sampling and
readings
Walks at 4.8 km.
(3 miles) per hour
Climbs vertical
treadmill (or
equivalent)
Walks at 4.8 km.
(3 miles) per hour
Climbs vertical
treadmill (or
equivalent)
Carries 20 kg. (45
pound) weight
and walks at 4.8
km. (3 miles) per
hour
Walks at 4.8 km.
(3 miles) per hour
Sampling and
readings
Page 33 of 98
1
3
4 times 5 times in
in 8 10 minutes.
minutes
3
3
5.
1
1
1
1
1.
2
3
5
1
1
1.
2
2
2
2.
2
2
3
5
11.
1
1
1
1
1.
1 time in 1 time in 2 times in 3 times in
2 minutes 2 minutes 4 minutes 6 minutes
1
1
1
1
1
1
5 times 5 times in
in 10 10 minutes.
minutes
2
2
2.
1 time in 3 times in 4 times in
2 minutes 6 minutes 8 minutes
2
1
1
3
3
3
1
1
1
1
2
3
1
1
2
1
1
Then
repeat
above
activities
once.
2
2
2
2
1
4
2
2
1
Total test time for Test 2 for 2-hour, 3-hour, and 4-hour apparatus is 2 hours.
2
Treadmill shall be inclined 15° from vertical and operated at a speed of 1 foot per second.
TABLE 3—DURATION AND SEQUENCE OF SPECIFIC ACTIVITIES FOR TEST 3, IN MINUTES
[42 CFR part 84, subpart H]
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Service time—
2, 3 and
3
10
15
30
45
minutes 5 minutes minutes minutes minutes minutes 1 hour 4 hours1
Activity
Sampling and
2
2
2
2
(2)
readings
1
1
2
2
3
Walks at 4.8
km. (3 miles)
per hour
1
1
1
1
1
1
1
Runs at 9.7
km. (6 miles)
per hour
30 times 30 times 30 times 60 times
15 times
Pulls 20 kg.
in 6
in 2
in 2
in 2
in 1
(45 pound)
minutes minutes
minutes
minutes
minute
weight to 5
feet
Lies on side
1/2
1
1
2
3
4
5
Lies on back
1/2
1
1
2
2
3
3
1
1
1
2
2
2
2
Crawls on
hands and
knees
Sampling and
2
2
2
2
readings
1
1
1
1
Runs at 9.7
km. (6 miles)
per hour
2
8
10
Walks at 4.8
km. (3 miles)
per hour
60 times 60 times 60 times
30 times
Pulls 20 kg.
in 6
in 6
in 6
in 2
(45 pound)
minutes minutes
minutes
minutes
weight to 5
feet
Sampling and
2
2
2
readings
1
3
4
10
Walks at 4.8
km. (3 miles)
per hour
Lies on side
2
4
Lies on back
2
1
Sampling and
2
2
2
readings
1
Total test time for Test 3 for 2-hour, 3-hour, and 4-hour apparatus is 2 hours.
2
Perform test No. 3 for 1 hr. apparatus; then perform test No. 1 for 1 hour apparatus.
TABLE 4—DURATION AND SEQUENCE OF SPECIFIC ACTIVITIES FOR TEST 4, IN MINUTES
[42 CFR part 84, subpart H]
Activity
Service time—
3
5
10
15
30
45
2
3
4
minutes minutes minutes minutes minutes minutes 1 hour hours hours hours
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Sampling
and readings
Walks at 4.8
km. (3 miles)
per hour
Climbs
1
1
vertical
treadmill1 (or
equivalent)
1
Walks at 4.8
km. (3 miles)
per hour
30 times
Pulls 20 kg.
in 2
(45 pound)
minutes
weight to 5
feet
Walks at 4.8
km. (3 miles)
per hour
Carries 23
kg. (50
pound)
weight over
overcast
Sampling
and readings
Walks at 4.8
km. (3 miles)
per hour
1
Runs at 9.7
km. (6 miles)
per hour
Carries 23
kg. (50
pound)
weight over
overcast
15 times
Pulls 20 kg
in 1
(45 pound)
minute
weight to 5
feet
Sampling
and readings
1
Walks at 4.8
km. (3 miles)
per hour
Pulls 20 kg.
(45 pound)
weight to 5
feet
Carries 20
kg. (45
pound)
weight and
walks at 4.8
Page 35 of 98
2
2
2
2
1
2
2
2
1
1
1
1
1
1
1
2
2
2
(2)
(3)
(4)
60
30 times 30 times 60 times 60 times
in 5 times in
in 5
in 2
in 2
5
minutes minutes minutes minutes
minutes
1
1
1
2
3
1 time in 1 time in
1 minute 1 minute
2
1
2 times 4 times
in 8
in 3
minutes minutes
2
2
2
1
3
3
4
1
1
1
1
1 time in 1 time in
1 minute 1 minute
2 times 4 times 6 times
in 9
in 6
in 3
minutes minutes minutes
36
15 times 60 times 30 times
in 2 times in
in 5
in 1
3
minute minutes minutes
minutes
2
2
2
2
1
2
6
60
60 times
in 5 times in
5
minutes
minutes
3
3
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km. (3 miles)
per hour
Sampling
and readings
Page 36 of 98
2
2
1
Treadmill shall be inclined 15° from vertical and operated at a speed of 30 cm. (1 foot) per
second.
2
Perform test No. 1 for 30-minute apparatus; then perform test No. 4 for 1-hour apparatus; then
perform test No. 1 for 30-minute apparatus.
3
Perform test No. 1 for 1-hour apparatus; then perform test No. 4 for 1-hour apparatus; then
perform test No. 1 for 1-hour apparatus.
4
Perform test No. 1 for 1-hour apparatus; then perform test No. 4 for 1-hour apparatus; then
perform test No. 1 for 1-hour apparatus twice (i.e., two one-hour tests).
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Subpart I—Gas Masks
Back to Top
§84.110 Gas masks; description.
(a) Gas masks including all completely assembled air purifying masks designed for use as
respiratory protection during entry into atmospheres not immediately dangerous to life or health or
escape only from hazardous atmospheres containing adequate oxygen to support life are described as
follows:
(1) Front-mounted or back-mounted gas mask. A gas mask which consists of a full facepiece, a
breathing tube, a canister at the front or back, a canister harness, and associated connections.
(2) Chin-style gas mask. A gas mask which consists of a full facepiece, a canister which is usually
attached to the facepiece, and associated connections.
(3) Escape gas mask. A gas mask designed for use during escape only from hazardous
atmospheres which consists of a facepiece or mouthpiece, a canister, and associated connections.
(b) Gas masks shall be further described according to the types of gases or vapors against which
they are designed to provide respiratory protection, as follows:
Type of front-mounted or back-mounted gas mask:
Acid gas1 2 3
Ammonia
Carbon monoxide
Organic Vapor1 2 3
Other gas(es) and vapor(s)1 2 3
Combination of two or more of the above gases and vapors.1 2 3
Combination of acid gas, ammonia, carbon monoxide, and organic vapors.1 2 3
Type of chin-style gas mask:
Acid gas1 2 3
Ammonia
Carbon monoxide
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Organic vapor1 2 3
Other gas(es) and vapor1 2 3
Combination of two or more of the above gases and vapors.1 2 3
Type of escape gas mask:
Acid gas1 2 3 4
Ammonia4
Carbon monoxide
Organic vapor1 2 3 4
Other gas(s) and vapor(s)1 2 3 4
Combination of two or more of the above gases and vapors.1 2 3 4
1
Approval may be for acid gases or organic vapors as a class or for specific acid gases or organic
vapors.
2
Not for use against gases or vapors with poor warning properties (except where MSHA or
Occupational Safety and Health Administration standards permit such use for a specific gas or vapor),
or those which generate high heats or reaction with sorbent materials in the canister.
3
Use of the gas mask may be limited by factors such as lower explosive limit, toxicological effects,
and facepiece fit. Limitations on gas mask service life and sorbent capacity limitations shall be
specified by the applicant in instructions for selection, use and maintenance of the gas mask.
4
Eye protection may be required in certain concentrations of gases and vapors.
(c) Gas masks for respiratory protection against gases and vapors other than those specified in
paragraph (b) of this section, may be approved upon submittal of an application in writing for approval
to the Certification and Quality Assurance Branch listing the gas or vapor and suggested maximum
use concentration for the specific type of gas mask. The Institute will consider the application and
accept or reject it on the basis of effect on the wearer's health and safety and any field experience in
use of gas masks for such exposures. If the application is accepted, the Institute will test such masks
in accordance with the requirements of this subpart.
Back to Top
§84.111 Gas masks; required components.
(a) Each gas mask described in §84.110 shall, where its design requires, contain the following
component parts:
(1) Facepiece or mouthpiece and noseclip;
(2) Canister or cartridge;
(3) Canister harness;
(4) External check valve; and
(5) Breathing tube.
(b) The components of each gas mask shall meet the minimum construction requirements set
forth in subpart G of this part.
Back to Top
§84.112 Canisters and cartridges in parallel; resistance requirements.
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Where two or more canisters or cartridges are used in parallel, their resistance to airflow shall be
essentially equal.
Back to Top
§84.113 Canisters and cartridges; color and markings; requirements.
The color and markings of all canisters and cartridges or labels shall conform with the
requirements of the American National Standards Institute, American National Standard for
Identification of Air-Purifying Respirator Canisters and Cartridges, ANSI K13.1-1973. ANSI K13.1 is
incorporated by reference and has been approved by the Director of the Federal Register in
accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be obtained from American National
Standards Institute, Inc., 1430 Broadway, New York, NY 10018. Copies may be inspected at the
NIOSH, Certification and Quality Assurance Branch, 1095 Willowdale Road, Morgantown, WV 265052888, or at the National Archives and Records Administration (NARA). For information on the
availability of this material at NARA, call 202-741-6030 , or go to:
http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.
Back to Top
§84.114 Filters used with canisters and cartridges; location; replacement.
(a) Particulate matter filters used in conjunction with a canister or cartridge shall be located on the
inlet side of the canister or cartridge.
(b) Filters shall be incorporated in or firmly attached to the canister or cartridge and each filter
assembly shall, where applicable, be designed to permit its easy removal from and replacement in the
canister or cartridge.
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§84.115 Breathing tubes; minimum requirements.
Flexible breathing tubes used in conjunction with gas masks shall be designed and constructed to
prevent:
(a) Restriction of free head movement;
(b) Disturbance of the fit of facepieces or mouthpieces;
(c) Interference with the wearer's activities; and
(d) Shutoff of airflow due to kinking, or from chin or arm pressure.
Back to Top
§84.116 Harnesses; installation and construction; minimum requirements.
(a) Each gas mask shall, where necessary, be equipped with a suitable harness designed and
constructed to hold the components of the gas mask in position against the wearer's body.
(b) Harnesses shall be designed and constructed to permit easy removal and replacement of gas
mask parts, and where applicable, provide for holding a full facepiece in the ready position when not in
use.
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§84.117 Gas mask containers; minimum requirements.
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(a) Gas masks shall be equipped with a substantial, durable container bearing markings which
show the applicant's name, the type and commercial designation of mask it contains and all
appropriate approval labels.
(b) Containers for gas masks shall be designed and constructed to permit easy removal of the
mask.
Back to Top
§84.118 Half-mask facepieces, full facepieces, and mouthpieces; fit; minimum requirements.
(a) Half-mask facepieces and full facepieces shall be designed and constructed to fit persons with
various facial shapes and sizes either:
(1) By providing more than one facepiece size; or
(2) By providing one facepiece size which will fit varying facial shapes and sizes.
(b) Full facepieces shall provide for optional use of corrective spectacles or lenses, which shall not
reduce the respiratory protective qualities of the gas mask.
(c) Half-mask facepieces shall not interfere with the fit of common industrial safety spectacles, as
determined by the Institute's facepiece tests in §84.124.
(d) Gas masks with mouthpieces shall be equipped with noseclips which are securely attached to
the mouthpiece or gas mask and provide an airtight seal.
(e) Facepieces shall be designed to prevent eyepiece fogging.
Back to Top
§84.119 Facepieces; eyepieces; minimum requirements.
(a) Full facepieces shall be designed and constructed to provide adequate vision which is not
distorted by the eye.
(b) All eyepieces shall be designed and constructed to be impact and penetration resistant.
Federal Specification, Mask, Air Line: and Respirator, Air Filtering, Industrial, GGG-M-125d, October
11, 1965 with interim amendment-1, July 30, 1969, is an example of an appropriate standard for
determining impact and penetration resistance. Copies of GGG-M-125d may be obtained from the
NIOSH, Certification and Quality Assurance Branch, 1095 Willowdale Road, Morgantown, WV 265052888.
Back to Top
§84.120 Inhalation and exhalation valves; minimum requirements.
(a) Inhalation and exhalation valves shall be provided where necessary and protected against
damage and distortion.
(b) Inhalation valves shall be designed and constructed to prevent excessive exhaled air from
adversely affecting cartridges, canisters, and filters.
(c) Exhalation valves shall be protected against external influence, and designed and constructed
to prevent inward leakage of contaminated air.
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§84.121 Head harnesses; minimum requirements.
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(a) Facepieces shall be equipped with adjustable and replaceable head harnesses, designed and
constructed to provide adequate tension during use and an even distribution of pressure over the
entire area in contact with the face.
(b) Mouthpieces shall be equipped, where applicable, with adjustable and replaceable harnesses
designed and constructed to hold the mouthpiece in place.
Back to Top
§84.122 Breathing resistance test; minimum requirements.
(a) Resistance to airflow will be measured in the facepiece or mouthpiece of a gas mask mounted
on a breathing machine both before and after each test conducted in accordance with §§84.124,
84.125, and 84.126, with air flowing at a continuous rate of 85 liters per minute.
(b) The maximum allowable resistance requirements for gas masks are as follows:
MAXIMUM RESISTANCE
[mm. water-column height]
Inhalation
Type of gas mask
Front-mounted or back-mounted (without particulate filter)
Front-mounted or back-mounted (with approved particulate filter)
Chin-style (without particulate filter)
Chin-style (with approved particulate filter)
Escape (without particulate filter)
Escape (with approved particulate filter)
Initial Final1 Exhalation
60
75
20
70
85
20
40
55
20
65
80
20
60
75
20
70
85
20
1
Measured at end of the service life specified in Tables 5, 6, and 7 of this subpart.
Back to Top
§84.123 Exhalation valve leakage test.
(a) Dry exhalation valves and valve seats will be subjected to a suction of 25 mm. water-column
height while in a normal operating position.
(b) Leakage between the valve and valve seat shall not exceed 30 milliliters per minute.
Back to Top
§84.124 Facepiece tests; minimum requirements.
(a) The complete gas mask will be fitted to the faces of persons having varying facial shapes and
sizes.
(b) Where the applicant specifies a facepiece size or sizes for the gas mask, together with the
approximate measurements of faces they are designed to fit, the Institute will insure that test subjects
suit such facial measurements.
(c) Any gas mask parts which must be removed to perform the facepiece or mouthpiece fit test
shall be replaceable without special tools and without disturbing the facepiece or mouthpiece fit.
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(d) The facepiece or mouthpiece fit test, using positive or negative pressure recommended by the
applicant and described in his instructions will be used before each test specified in paragraph (e) of
this section, and in §84.125.
(e)(1) Each wearer will enter a chamber containing 100 p.p.m. isoamyl acetate vapor for a halfmask facepiece and 1,000 p.p.m. isoamyl acetate vapor for a full facepiece or mouthpiece.
(2) The facepiece or mouthpiece may be adjusted, if necessary, in the test chamber before
starting the tests.
(3) Each wearer will remain in the chamber for 8 minutes while performing the following activities:
(i) Two minutes, nodding and turning head;
(ii) Two minutes, calisthenic arm movements;
(iii) Two minutes, running in place; and
(iv) Two minutes, pumping with a tire pump into a 28 liter (1 cubic foot) container.
(4) Each wearer shall not detect the odor of isoamyl acetate during the test.
Back to Top
§84.125 Particulate tests; canisters containing particulate filters; minimum requirements.
Gas mask canisters containing filters for protection against particulates (e.g. dusts, fumes, mists,
and smokes) in combination with gases, vapors, or gases and vapors, shall also comply with the
requirements as prescribed in §§84.170 through 84.183, except for the airflow resistance test of
§84.181.
Back to Top
§84.126 Canister bench tests; minimum requirements.
(a)(1) Bench tests, except for carbon monoxide tests, will be made on an apparatus that allows
the test atmosphere at 50 ±5 percent relative humidity and room temperature (25 ±2.5 °C.) to enter the
canister continuously at concentrations and rates of flow specified in Tables 5, 6, and 7 of this subpart.
(2) Three canisters will be removed from containers and tested as received from the applicant.
(3) Two canisters, other than those described in paragraph (a)(2) of this section, will be
equilibrated at room temperature by passing 25 percent relative humidity air through them at 64 liters
per minute for 6 hours.
(4) Two canisters, other than those described in paragraphs (a) (2) and (3) of this section, will be
equilibrated at room temperature by passing 85 percent relative humidity air through them at 64 liters
per minute for 6 hours.
(5) The equilibrated canisters will be resealed, kept in an upright position at room temperature,
and tested within 18 hours.
(b) Front-mounted and back-mounted gas mask canisters will be tested and shall meet the
minimum requirements set forth in Table 5 of this subpart.
(c)(1) Front-mounted, and back-mounted, and chin-style canisters designated as providing
respiratory protection against gases, ammonia, organic vapors, carbon monoxide and particulate
contaminants shall have a window or other indicator to warn the gas mask wearer when the canister
will no longer satisfactorily remove carbon monoxide from the inhaled air.
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(2) Other types of front- and back-mounted canisters may also be equipped with a window or
other indicator to warn of imminent leakage of other gases or vapors.
(3) The window indicator canisters will be tested as regular canisters, but shall show a satisfactory
indicator change or other warning before the allowable canister penetration has occurred.
(d) Chin-style gas mask canisters shall meet the minimum requirements set forth in Table 6 of this
subpart.
(e) Escape gas mask canisters shall meet the minimum requirements set forth in Table 7 of this
subpart.
Back to Top
Tables to Subpart I of Part 84
TABLE 5—CANISTER BENCH TESTS AND REQUIREMENTS FOR FRONT-MOUNTED AND BACKMOUNTED GAS MASK CANISTERS
[42 CFR part 84, subpart I]
Test atmosphere
Flow rate
Gas Concentration (liters
per
(parts per
Number
or
Test
minute) of tests
million)
Canister type condition vapor
Acid gas
As received SO2
20,000
64
3
Equilibrated Cl2
20,000
64
3
SO2
20,000
32
4
Cl2
20,000
32
4
Organic vapor As received CCl4
20,000
64
3
Equilibrated CCl4
20,000
32
4
Ammonia
As received NH3
30,000
64
3
Equilibrated NH3
30,000
32
4
4
2
Carbon
As received CO
20,000
64
monoxide
2
Equilibrated CO
5,000
3
32
CO
3,000
2
32
3
Maximum
allowable
penetratin
(parts per
million)
(3)
Minimum
service life
(minutes)1
12
12
12
12
12
12
12
12
60
(3)
60
3
60
5
5
5
5
5
5
50
50
()
Combination
of 2 or 3 of
above types5
Combination
of all above
types6
1
Minimum life will be determined at the indicated penetration.
2
Relative humidity of test atmosphere will be 95 ±3pct; temperature of test atmosphere will be 25
±2.5 °C.
3
Maximum allowable CO penetration will be 385 cm3 during the minimum life. The penetration
shall not exceed 500 p/m during this time.
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4
Relative humidity of test atmosphere will be 95 ±3pct; temperature of test atmosphere entering
the test fixture will be 0 ±2.5 °C−0 °C.
5
Test conditions and requirements will be applicable as shown in this table.
6
Test conditions and requirements will be applicable as shown in this table, except the minimum
service lives for acid gas, organic vapor, and ammonia will be 6 min instead of 12 min.
TABLE 6—CANISTER BENCH TESTS AND REQUIREMENTS FOR CHIN-STYLE GAS MASK CANISTERS
[42 CFR part 84, subpart I]
Test atmosphere
Flow
Maximum
rate
allowable
penetration Minimum
Gas Concentration (liters
per
(parts per
or
Test
Number (parts per service life
minute) of tests
(minutes)1
million)
million)
Canister type condition vapor
Acid gas
As received SO2
50,000
64
3
5
12
Equilibrated
5,000
64
3
5
12
Cl2
SO2
5,000
32
4
5
12
Cl2
5,000
32
4
5
12
Organic vapor As received CCl4
5,000
64
3
5
12
Equilibrated
5,000
32
4
5
12
CCl4
Ammonia
As received NH3
5,000
64
3
50
12
Equilibrated
As received NH3
5,000
32
4
50
12
Equilibrated
2
2
60
Carbon
As received CO
20,000
64
(3)
monoxide
4
3
60
CO
5,000
32
(3)
2
3
CO
3,000
3
60
32
()
Combination
of 2 or 3 of
above types5
Combination
of all above
types6
1
Minimum life will be determined at the indicated penetration.
2
Relative humidity of test atmosphere will be 95 ±3pct; temperature of test atmosphere will be 25
±2.5 °C.
3
Maximum allowable CO penetration will be 385 cm3 during the minimum life. The penetration
shall not exceed 500 p/m during this time.
4
Relative humidity of test atmosphere will be 95 ±3pct; temperature of test atmosphere entering
the test fixture will be 0 ±2.5 °C−0 °C.
5
Test conditions and requirements will be applicable as shown in this table.
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6
Test conditions and requirements will be applicable as shown in this table, except the minimum
service lives for acid gas, organic vapor, and ammonia will be 6 min instead of 12 min.
TABLE 7—CANISTER BENCH TESTS AND REQUIREMENTS FOR ESCAPE GAS MASK CANISTERS
[42 CFR part 84, subpart I]
Test atmosphere
Gas Concentration Flow rate
(liters per Number
(parts per
or
Canister
Test
minute) of tests
million)
type
condition vapor
Acid gas As received SO2
5,000
64
3
Equilibrated Cl2
5,000
64
3
SO2
5,000
32
4
Cl2
5,000
32
4
Organic As received CCl4
5,000
64
3
vapor
Equilibrated CCl4
5,000
32
4
Ammonia As received NH3
5,000
64
3
Equilibrated NH3
5,000
32
4
2
2
Carbon
As received CO
10,000
32
monoxide
5
CO
5,000
3
32
2
CO
3,000
3
32
Maximum
allowable
penetration
(parts per
million)
5
5
5
5
5
Minimum
service life
(minutes)1
12
12
12
12
12
5
50
50
12
12
12
(3)
4
60
(3)
60
3
60
()
1
Minimum life will be determined at the indicated penetration.
2
Relative humidity of test atmosphere will be 95 ±3 pct; temperature of test atmosphere will be 25
±2.5 °C.
3
Maximum allowable CO penetration will be 385 cm3 during the minimum life. The penetration
shall not exceed 500 p/m during this time.
4
If effluent temperature exceeds 100 °C during this test, the escape gas mask shall be equipped
with an effective heat exchanger.
5
Relative humidity of test atmosphere will be 95 ±3 pct; temperature of test atmosphere entering
the test fixture will be 0 ±2.5 °C−0 °C.
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Subpart J—Supplied-Air Respirators
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§84.130 Supplied-air respirators; description.
Supplied-air respirators, including all completely assembled respirators designed for use as
respiratory protection during entry into and escape from atmospheres not immediately dangerous to
life or health are described as follows:
(a) Type “A” supplied-air respirators. A hose mask respirator, for entry into and escape from
atmospheres not immediately dangerous to life or health, which consists of a motor-driven or hand-
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operated blower that permits the free entrance of air when the blower is not operating, a strong largediameter hose having a low resistance to airflow, a harness to which the hose and the life-line are
attached and a tight-fitting facepiece.
(b) Type “AE” supplied-air respirators. A Type “A” supplied-air respirator equipped with additional
devices designed to protect the wearer's head and neck against impact and abrasion from rebounding
abrasive material, and with shielding material such as plastic, glass, woven wire, sheet metal, or other
suitable material to protect the window(s) of facepieces, hoods, and helmets which do not unduly
interfere with the wearer's vision and permit easy access to the external surface of such window(s) for
cleaning.
(c) Type “B” supplied-air respirators. A hose mask respirator, for entry into and escape from
atmospheres not immediately dangerous to life or health, which consists of a strong large-diameter
hose with low resistance to airflow through which the user draws inspired air by means of his lungs
alone, a harness to which the hose is attached, and a tight-fitting facepiece.
(d) Type “BE” supplied-air respirators. A type “B” supplied-air respirator equipped with additional
devices designed to protect the wearer's head and neck against impact and abrasion from rebounding
abrasive material, and with shielding material such as plastic, glass, woven wire, sheet metal, or other
suitable material to protect the window(s) of facepieces, hoods, and helmets which do not unduly
interfere with the wearer's vision and permit easy access to the external surface of such window(s) for
cleaning.
(e) Type “C” supplied-air respirators. An airline respirator, for entry into and escape from
atmospheres not immediately dangerous to life or health, which consists of a source of respirable
breathing air, a hose, a detachable coupling, a control valve, orifice, a demand valve or pressure
demand valve, an arrangement for attaching the hose to the wearer, and a facepiece, hood, or helmet.
(f) Type “CE” supplied-air respirators. A type “C” supplied-air respirator equipped with additional
devices designed to protect the wearer's head and neck against impact and abrasion from rebounding
abrasive material, and with shielding material such as plastic, glass, woven wire, sheet metal, or other
suitable material to protect the window(s) of facepieces, hoods, and helmets which do not unduly
interfere with the wearer's vision and permit easy access to the external surface of such window(s) for
cleaning.
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§84.131 Supplied-air respirators; required components.
(a) Each supplied-air respirator described in §84.130 shall, where its design requires, contain the
following component parts:
(1) Facepiece, hood, or helmet;
(2) Air supply valve, orifice, or demand or pressure-demand regulator;
(3) Hand operated or motor driven air blower;
(4) Air supply hose;
(5) Detachable couplings;
(6) Flexible breathing tube; and
(7) Respirator harness.
(b) The component parts of each supplied-air respirator shall meet the minimum construction
requirements set forth in subpart G of this part.
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§84.132 Breathing tubes; minimum requirements.
Flexible breathing tubes used in conjunction with supplied-air respirators shall be designed and
constructed to prevent:
(a) Restriction of free head movement;
(b) Disturbance of the fit of facepieces, mouthpieces, hoods, or helmets;
(c) Interference with the wearer's activities; and
(d) Shutoff of airflow due to kinking, or from chin or arm pressure.
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§84.133 Harnesses; installation and construction; minimum requirements.
(a) Each supplied-air respirator shall, where necessary, be equipped with a suitable harness
designed and constructed to hold the components of the respirator in position against the wearer's
body.
(b) Harnesses shall be designed and constructed to permit easy removal and replacement of
respirator parts, and where applicable, provide for holding a full facepiece in the ready position when
not in use.
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§84.134 Respirator containers; minimum requirements.
Supplied-air respirators shall be equipped with a substantial, durable container bearing markings
which show the applicant's name, the type and commercial designation of the respirator it contains,
and all appropriate approval labels.
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§84.135 Half-mask facepieces, full facepieces, hoods, and helmets; fit; minimum
requirements.
(a) Half-mask facepieces and full facepieces shall be designed and constructed to fit persons with
various facial shapes and sizes either:
(1) By providing more than one facepiece size; or
(2) By providing one facepiece size which will fit varying facial shapes and sizes.
(b) Full facepieces shall provide for optional use of corrective spectacles or lenses, which shall not
reduce the respiratory protective qualities of the respirator.
(c) Hoods and helmets shall be designed and constructed to fit persons with various head sizes,
provide for the optional use of corrective spectacles or lenses, and insure against any restriction of
movement by the wearer.
(d) Facepieces, hoods, and helmets shall be designed to prevent eyepiece fogging.
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§84.136 Facepieces, hoods, and helmets; eyepieces; minimum requirements.
(a) Facepieces, hoods, and helmets shall be designed and constructed to provide adequate vision
which is not distorted by the eyepiece.
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(b) All eyepieces except those on Types B, BE, C, and CE supplied-air respirators shall be
designed and constructed to be impact and penetration resistant. Federal Specification, Mask, Air
Line: and Respirator, Air Filtering, Industrial, GGG-M-125d, October 11, 1965 with interim
amendment-1, July 30, 1969, is an example of an appropriate standard for determining impact and
penetration resistance. Copies of GGG-M-125d may be obtained from the NIOSH, Certification and
Quality Assurance Branch, 1095 Willowdale Road, Morgantown, WV 26505-2888.
(c)(1) The eyepieces of AE, BE, and CE type supplied-air respirators shall be shielded by plastic,
glass, woven wire, sheet metal, or other suitable material which does not interfere with the vision of
the wearer.
(2) Shields shall be mounted and attached to the facepiece to provide easy access to the external
surface of the eyepiece for cleaning.
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§84.137 Inhalation and exhalation valves; check valves; minimum requirements.
(a) Inhalation and exhalation valves shall be provided where necessary and protected against
distortion.
(b) Exhalation valves shall be:
(1) Protected against damage and external influence; and
(2) Designed and constructed to prevent inward leakage of contaminated air.
(c) Check valves designed and constructed to allow airflow toward the facepiece only shall be
provided in the connections to the facepiece or in the hose fitting near the facepiece of all Type A, AE,
B, and BE supplied-air respirators.
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§84.138 Head harnesses; minimum requirements.
Facepieces shall be equipped with adjustable and replaceable head harnesses which are
designed and constructed to provide adequate tension during use, and an even distribution of
pressure over the entire area in contact with the face.
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§84.139 Head and neck protection; supplied-air respirators; minimum requirements.
Type AE, BE, and CE supplied-air respirators shall be designed and constructed to provide
protection against impact and abrasion from rebounding abrasive materials to the wearer's head and
neck.
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§84.140 Air velocity and noise levels; hoods and helmets; minimum requirements.
Noise levels generated by the respirator will be measured inside the hood or helmet at maximum
airflow obtainable within pressure and hose length requirements and shall not exceed 80 dBA.
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§84.141 Breathing gas; minimum requirements.
(a) Breathing gas used to supply supplied-air respirators shall be respirable breathing air and
contain no less than 19.5 volume-percent of oxygen.
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(b) Compressed, gaseous breathing air shall meet the applicable minimum grade requirements for
Type I gaseous air set forth in the Compressed Gas Association Commodity Specification for Air,
G-7.1, 1966 (Grade D or higher quality). G-7.1 is incorporated by reference and has been approved by
the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies
may be obtained from American National Standards Institute, Inc., 1430 Broadway, New York, NY
10018. Copies may be inspected at the NIOSH, Certification and Quality Assurance Branch, 1095
Willowdale Road, Morgantown, WV 26505-2888, or at the National Archives and Records
Administration (NARA). For information on the availability of this material at NARA, call
202-741-6030 , or go to:
http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.
(c) Compressed, liquefied breathing air shall meet the applicable minimum grade requirements for
Type II liquid air set forth in the Compressed Gas Association Commodity Specification for Air, G-7.1,
1966 (Grade B or higher quality). G-7.1 is incorporated by reference and has been approved by the
Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may
be obtained from American National Standards Institute, Inc., 1430 Broadway, New York, NY 10018.
Copies may be inspected at the NIOSH, Certification and Quality Assurance Branch, 1095 Willowdale
Road, Morgantown, WV 26505-2888, or at the National Archives and Records Administration (NARA).
For information on the availability of this material at NARA, call 202-741-6030 , or go to:
http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.
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§84.142 Air supply source; hand-operated or motor driven air blowers; Type A supplied-air
respirators; minimum requirements.
(a) Blowers shall be designed and constructed to deliver an adequate amount of air to the wearer
with either direction of rotation, unless constructed to permit rotation in one direction only, and to
permit the free entrance of air to the hose when the blower is not operated.
(b) No multiple systems, whereby more than one user is supplied by one blower, will be approved,
unless each hose line is connected directly to a manifold at the blower.
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§84.143 Terminal fittings or chambers; Type B supplied-air respirators; minimum
requirements.
(a) Blowers or connections to air supplies providing positive pressures shall not be approved for
use on Type B supplied-air respirators.
(b) Terminal fittings or chambers employed in Type B supplied-air respirators, shall be:
(1) Installed in the inlet of the hose.
(2) Designed and constructed to provide for the drawing of air through corrosion resistant material
arranged so as to be capable of removing material larger than 0.149 mm. in diameter (149
micrometers, 100-mesh, U.S. Standard sieve).
(3) Installed to provide a means for fastening or anchoring the fitting or chamber in a fixed position
in a zone of respirable air.
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§84.144 Hand-operated blower test; minimum requirements.
(a) Hand-operated blowers shall be tested by attaching them to a mechanical drive and operating
them 6 to 8 hours daily for a period of 100 hours at a speed necessary to deliver 50 liters of air per
minute through each completely assembled respirator. Each respirator shall be equipped with the
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maximum length of hose with which the device is to be approved and the hose shall be connected to
each blower or manifold outlet designed for hose connections.
(b) The crank speed of the hand-operated blower shall not exceed 50 revolutions per minute in
order to deliver the required 50 liters of air per minute to each facepiece.
(c) The power required to deliver 50 liters of air per minute to each wearer through the maximum
length of hose shall not exceed one-fiftieth horsepower, and the torque shall not exceed a force of 2.3
kg. (5 pounds) on a 20 cm. (8-inch) crank, as defined in §84.146.
(d) The blower shall operate throughout the period without failure or indication of excessive wear
of bearings or other working parts.
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§84.145 Motor-operated blower test; minimum requirements.
(a) Motor-operated blowers shall be tested by operating them at their specified running speed 6 to
8 hours daily for a period of 100 hours when assembled with the kind and maximum length of hose for
which the device is to be approved and when connected to each blower or manifold outlet designed for
hose connections.
(b) The connection between the motor and the blower shall be so constructed that the motor may
be disengaged from the blower when the blower is operated by hand.
(c) The blower shall operate throughout the period without failure or indication of excessive wear
of bearings or other working parts.
(d) Where a blower, which is ordinarily motor driven, is operated by hand, the power required to
deliver 50 liters of air per minute to each wearer through the maximum length of hose shall not exceed
one-fiftieth horsepower, and the torque shall not exceed a force of 2.3 kg. (5 pounds) on a 20 cm.
(8-inch) crank, as defined in §84.146.
(e) Where the respirator is assembled with the facepiece and 15 m. (50 feet) of the hose for which
it is to be approved, and when connected to one outlet with all other outlets closed and operated at a
speed not exceeding 50 revolutions of the crank per minute, the amount of air delivered into the
respiratory-inlet covering shall not exceed 150 liters per minute.
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§84.146 Method of measuring the power and torque required to operate blowers.
As shown in Figure 1 of this section, the blower crank is replaced by a wooden drum, a (13 cm. (5
inches) in diameter is convenient). This drum is wound with about 12 m. (40 feet) of No. 2 picture cord,
b. A weight, c, of sufficient mass to rotate the blower at the desired speed is suspended from this wire
cord. A mark is made on the cord about 3 to 4.5 m. (10 to 15 feet) from the weight, c. Another mark is
placed at a measured distance (6-9 m./20-30 feet is convenient) from the first. These are used to
facilitate timing. To determine the torque or horsepower required to operate the blower, the drum is
started in rotation manually at or slightly above the speed at which the power measurement is to be
made. The blower is then permitted to assume constant speed, and then as the first mark on the wire
leaves the drum, a stopwatch is started. The watch is stopped when the second mark leaves the drum.
From these data the foot-pounds per minute and the torque may be calculated.
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FIGURE 1—APPARATUS FOR MEASURING POWER REQUIRED TO OPERATE BLOWER. (42 CFR PART 84,
SUBPART J, §84.146)
View or download PDF
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§84.147 Type B supplied-air respirator; minimum requirements.
No Type B supplied-air respirator shall be approved for use with a blower or with connection to an
air supply device at positive pressures.
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§84.148 Type C supplied-air respirator, continuous flow class; minimum requirements.
(a) Respirators tested under this section shall be approved only when they supply respirable air at
the pressures and quantities required.
(b) The pressure at the inlet of the hose connection shall not exceed 863 kN/m.2 (125 pounds per
square inch gage).
(c) Where the pressure at any point in the supply system exceeds 863 kN/m.2 (125 pounds per
square inch gage), the respirator shall be equipped with a pressure-release mechanism that will
prevent the pressure at the hose connection from exceeding 863 kN/m.2 (125 pounds per square inch
gage) under any conditions.
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§84.149 Type C supplied-air respirator, demand and pressure demand class; minimum
requirements.
(a) Respirators tested under this section shall be approved only when used to supply respirable
air at the pressures and quantities required.
(b) The manufacturer shall specify the range of air pressure at the point of attachment of the airsupply hose to the air-supply system, and the range of hose length for the respirator. For example, he
might specify that the respirator be used with compressed air at pressures ranging from 280-550
kN/m.2 (40 to 80 pounds per square inch) with from 6 to 76 m. (15 to 250 feet) of air-supply hose.
(c) The specified air pressure at the point of attachment of the hose to the air-supply system shall
not exceed 863 kN/m.2 (125 pounds per square inch gage).
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(d)(1) Where the pressure in the air-supply system exceeds 863 kN/m.2 (125 pounds per square
inch gage), the respirator shall be equipped with a pressure-release mechanism that will prevent the
pressure at the point of attachment of the hose to the air-supply system from exceeding 863 kN/m.2
(125 pounds per square inch gage).
(2) The pressure-release mechanism shall be set to operate at a pressure not more than 20
percent above the manufacturer's highest specified pressure. For example, if the highest specified
pressure is 863 kN/m.2 (125 pounds per square inch), the pressure-release mechanism would be set
to operate at a maximum of 1,035 kN/m.2 (150 pounds per square inch).
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§84.150 Air-supply line tests; minimum requirements.
Air supply lines employed on Type A, Type B, and Type C supplied-air respirators shall meet the
minimum test requirements set forth in Table 8 of this subpart.
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§84.151 Harness test; minimum requirements.
(a)(1) Shoulder straps employed on Type A supplied-air respirators shall be tested for strength of
material, joints, and seams and must separately withstand a pull of 113 kg. (250 pounds) for 30
minutes without failure.
(2) Belts, rings, and attachments for life lines must withstand a pull of 136 kg. (300 pounds) for 30
minutes without failure.
(3) The hose shall be firmly attached to the harness so as to withstand a pull of 113 kg. (250
pounds) for 30 minutes without separating, and the hose attachments shall be arranged so that the
pull or drag of the hose behind an advancing wearer does not disarrange the harness or exert pull
upon the facepiece.
(4) The arrangement and suitability of all harness accessories and fittings will be considered.
(b)(1) The harness employed on Type B supplied-air respirators shall not be uncomfortable,
disturbing, or interfere with the movements of the wearer.
(2) The harness shall be easily adjustable to various sizes.
(3) The hose shall be attached to the harness in a manner that will withstand a pull of 45 kg. (100
pounds) for 30 minutes without separating or showing signs of failure.
(4) The design of the harness and attachment of the line shall permit dragging the maximum
length of hose considered for approval over a concrete floor without disarranging the harness or
exerting a pull on the facepiece.
(5) The arrangement and suitability of all harness accessories and fittings will be considered.
(c) The harness employed on Type C respirators shall be similar to that required on the Type B
respirator, or, it may consist of a simple arrangement for attaching the hose to a part of the wearer's
clothing in a practical manner that prevents a pull equivalent to dragging the maximum length of the
hose over a concrete floor from exerting pull upon the respiratory-inlet covering.
(d) Where supplied-air respirators have a rigid or partly rigid head covering, a suitable harness
shall be required to assist in holding this covering in place.
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§84.152 Breathing tube test; minimum requirements.
(a)(1) Type A and Type B supplied-air respirators shall employ one or two flexible breathing tubes
of the nonkinking type which extend from the facepiece to a connecting hose coupling attached to the
belt or harness.
(2) The breathing tubes employed shall permit free head movement, insure against closing off by
kinking or by chin or arm pressure, and they shall not create a pull that will loosen the facepiece or
disturb the wearer.
(b) Breathing tubes employed on Type C supplied-air respirators of the continuous flow class shall
meet the minimum requirements set forth in paragraph (a) of this section, however, an extension of the
connecting hose may be employed in lieu of the breathing tubes required.
(c)(1) A flexible, nonkinking type breathing tube shall:
(i) Be employed on Type C supplied-air respirators of the demand and pressure-demand class;
and
(ii) Extend from the facepiece to the demand or pressure-demand valve, except where the valve is
attached directly to the facepiece.
(2) The breathing tube shall permit free head movement, insure against closing off by kinking or
by chin or arm pressure, and shall not create a pull that will loosen the facepiece or disturb the wearer.
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§84.153 Airflow resistance test, Type A and Type AE supplied-air respirators; minimum
requirements.
(a) Airflow resistance will be determined when the respirator is completely assembled with the
respiratory-inlet covering, the air-supply device, and the maximum length of air-supply hose coiled for
one-half its length in loops 1.5 to 2.1 m. (5 to 7 feet) in diameter.
(b) The inhalation resistance, drawn at the rate of 85 liters (3 cubic feet) per minute when the
blower is not operating or under any practical condition of blower operation shall not exceed the
following amounts:
Maximum length of hose for which respirator is
approved
Feet
Meters
75
150
250
300
23
46
76
91
Maximum resistance, water column
height
Inches
Millimeters
1.5
38
2.5
64
3.5
89
4.0
102
(c) The exhalation resistance shall not exceed 25 mm. (1 inch) of water-column height at a flow
rate of 85 liters (3 cubic feet) per minute when the blower is not operating or under any practical
condition of blower operation.
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§84.154 Airflow resistance test; Type B and Type BE supplied-air respirators; minimum
requirements.
(a) Airflow resistance shall be determined when the respirator is completely assembled with the
respiratory-inlet covering and the hose in the maximum length to be considered for approval, coiled in
loops 1.5 to 2.1 m. (5 to 7 feet) in diameter.
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(b) Airflow resistance shall not exceed 38 mm. (1.5 inches) of water-column height to air drawn at
the flow rate of 85 liters (3 cubic feet) per minute.
(c) The exhalation resistance shall not exceed 25 mm. (1 inch) of water-column height at this flow
rate.
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§84.155 Airflow resistance test; Type C supplied-air respirator, continuous flow class and
Type CE supplied-air respirator; minimum requirements.
The resistance to air flowing from the respirator shall not exceed 25 mm. (1 inch) of water-column
height when the air flow into the respiratory-inlet covering is 115 liters (4 cubic feet) per minute.
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§84.156 Airflow resistance test; Type C supplied-air respirator, demand class; minimum
requirements.
(a) Inhalation resistance shall not exceed 50 millimeters (2 inches) of water at an air flow of 115
liters (4 cubic feet) per minute.
(b) The exhalation resistance to a flow of air at a rate of 85 liters (3 cubic feet) per minute shall not
exceed 25 millimeters (1 inch) of water.
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§84.157 Airflow resistance test; Type C supplied-air respirator, pressure-demand class;
minimum requirements.
(a) The static pressure in the facepiece shall not exceed 38 mm. (1.5 inches) of water-column
height.
(b) The pressure in the facepiece shall not fall below atmospheric at inhalation airflows less than
115 liters (4 cubic feet) per minute.
(c) The exhalation resistance to a flow of air at a rate of 85 liters (3 cubic feet) per minute shall not
exceed the static pressure in the facepiece by more than 51 mm. (2 inches) of water-column height.
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§84.158 Exhalation valve leakage test.
(a) Dry exhalation valves and valve seats will be subjected to a suction of 25 mm. water-column
height while in a normal operating position.
(b) Leakage between the valve and valve seat shall not exceed 30 milliliters per minute.
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§84.159 Man tests for gases and vapors; supplied-air respirators; general performance
requirements.
(a) Wearers will enter a chamber containing a gas or vapor as prescribed in §§84.160, 84.161,
84.162, and 84.163.
(b) Each wearer will spend 10 minutes in work to provide observations on freedom of the device
from leakage. The freedom and comfort allowed the wearer will also be considered.
(c) Time during the test period will be divided as follows:
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(1) Five minutes. Walking, turning head, dipping chin; and
(2) Five minutes. Pumping air with a tire pump into a 28-liter (1 cubic foot) container, or equivalent
work.
(d) No odor of the test gas or vapor shall be detected by the wearer in the air breathed during any
such test, and the wearer shall not be subjected to any undue discomfort or encumbrance because of
the fit, air delivery, or other features of the respirator during the testing period.
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§84.160 Man test for gases and vapors; Type A and Type AE respirators; test requirements.
(a) The completely assembled respirator will be worn in a chamber containing 0.1 ±0.025 percent
isoamyl acetate vapor, and the blower, the intake of the hose, and not more than 25 percent of the
hose length will be located in isoamyl acetate-free air.
(b) The man in the isoamyl acetate atmosphere will draw his inspired air through the hose,
connections, and all parts of the air device by means of his lungs alone (blower not operating).
(c) The 10-minute work test will be repeated with the blower in operation at any practical speed up
to 50 revolutions of the crank per minute.
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§84.161 Man test for gases and vapors; Type B and Type BE respirators; test requirements.
(a) The completely assembled respirator will be worn in a chamber containing 0.1 ±0.025 percent
isoamyl acetate vapor, and the intake of the hose, and not more than 25 percent of the hose length will
be located in isoamyl acetate-free air.
(b) The man in the isoamyl acetate atmosphere will draw his inspired air through the hose and
connections by means of his lungs alone.
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§84.162 Man test for gases and vapors; Type C respirators, continuous-flow class and Type
CE supplied-air respirators; test requirements.
(a) The completely assembled respirator will be worn in a chamber containing 0.1 ±0.025 percent
isoamyl acetate vapor, the intake of the hose will be connected to a suitable source of respirable air,
and not more than 25 percent of the hose length will be located in isoamyl acetate-free air.
(b) The minimum flow of air required to maintain a positive pressure in the respiratory-inlet
covering throughout the entire breathing cycle will be supplied to the wearer, provided however, that
airflow shall not be less than 115 liters per minute for tight-fitting and not less than 170 liters per
minute for loose-fitting respiratory inlet-coverings.
(c) The test will be repeated with the maximum rate of flow attainable within specified operating
pressures.
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§84.163 Man test for gases and vapors; Type C supplied-air respirators, demand and
pressure-demand classes; test requirements.
(a) The completely assembled respirator will be worn in a chamber containing 0.1 ±0.025 percent
isoamyl acetate vapor, the intake of the hose will be connected to a suitable source of respirable air,
and not more than 25 percent of the hose length will be located in isoamyl acetate-free air.
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(b) The test will be conducted at the minimum pressure with the maximum hose length and will be
repeated at the maximum pressure with the minimum hose length.
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Table to Subpart J of Part 84
TABLE 8—AIR-SUPPLY-LINE REQUIREMENTS AND TESTS
[42 CFR part 84, subpart J]
Requirements for the air-supply lines of the indicated type of supplied-air
respirators
Specific
requirements
Type A
Type B
Type C
Length of hose Maximum of 91 m. Maximum Maximum of 91 m. (300 feet) in multiples of 7.6 m.
(25 feet). It will be permissible for the applicant to
of 23 m.
(300 feet), in
multiples of 7.6 m. (75 feet) in supply hose of the approved type of shorter length
multiples than 7.6 m. (25 feet) provided it meets the
(25 feet)
of 7.6 m. requirements of the part.
(25 feet)
Air flow
None
None
The air-supply hose with air regulating valve or
orifice shall permit a flow of not less than 115 liters
(4 cubic feet) per minute to tight-fitting and 170
liters (6 cubic feet) per minute to loose-fitting
respiratory-inlet coverings through the maximum
length of hose for which approval is granted and at
the minimum specified air-supply pressure. The
maximum flow shall not exceed 425 liters (15 cubic
feet) per minute at the maximum specified airsupply pressure with the minimum length of hose
for which approval is granted.
Air flow
......do
......do
The air-supply hose, detachable coupling, and
demand valve of the demand class or pressuredemand valve of the pressure-demand class for
Type C supplied-air respirators, demand and
pressure-demand classes, shall be capable of
delivering respirable air at a rate of not less than
115 liters (4 cubic feet) per minute to the
respiratory-inlet covering at an inhalation
resistance not exceeding 50 millimeters (2 inches)
of water-column height measured in the
respiratory-inlet covering with any combination of
air-supply pressure and length of hose within the
applicant's specified range of pressure and hose
length. The air-flow rate and resistance to
inhalation shall be measured while the demand or
pressure-demand valve is actuated 20 times per
minute by a source of intermittent suction. The
maximum rate of flow to the respiratory-inlet
covering shall not exceed 425 liters (15 cubic feet)
per minute under the specified operating
conditions.
Air-regulating
......do
......do
If an air-regulating valve is provided, it shall be so
valve
designed that it will remain at a specific adjustment,
which will not be affected by the ordinary
movement of the wearer. The valve must be so
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Noncollapsibility The hose shall not Same as
collapse or exhibit Type A
permanent
deformation when a
force of 90 kg. (200
pounds) is applied
for 5 minutes
between 2 planes
7.6 cm. (3 inches)
wide on opposite
sides of the hose
Nonkinkability None
None
Strength of hose Hose and couplings Same as
and couplings shall not separate Type A
or fail when tested
with a pull of 113
kg. (250 pounds)
for 5 minutes
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constructed that the air supply with the maximum
length of hose and at the minimum specified airsupply pressure will not be less than 115 liters (4
cubic feet) of air per minute to tight-fitting and 170
liters (6 cubic feet) of air per minute of loose-fitting
respiratory inlet coverings for any adjustment of the
valve. If a demand or pressure-demand valve
replaces the air-regulating valve, it shall be
connected to the air-supply at the maximum air
pressure for which approval is sought by means of
the minimum length of air-supply hose for which
approval is sought. The outlet of the demand or
pressure-demand valve shall be connected to a
source of intermittent suction so that the demand or
pressure-demand valve is actuated approximately
20 times per minute for a total of 100,000
inhalations. To expedite this test, the rate of
actuation may be increased if mutually agreeable
to the applicant and NIOSH. During this test the
valve shall function without failure and without
excessive wear of the moving parts. The demand
or pressure-demand valve shall not be damaged in
any way when subjected at the outlet to a pressure
or suction of 25 cm. (10 inches) of water gage for 2
minutes.
None.
A 7.6 m. (25 foot) section of the hose will be placed
on a horizontal-plane surface and shaped into a
one-loop coil with one end of the hose connected
to an airflow meter and the other end of the hose
supplied with air at the minimum specified supply
pressure. The connection shall be in the plane of
the loop. The other end of the hose will be pulled
tangentially to the loop and in the plane of the loop
until the hose straightens. To meet the
requirements of this test the loop shall maintain a
uniform near-circular shape and ultimately unfold
as a spiral, without any localized deformation that
decreases the flow of air to less than 90 percent of
the flow when the hose is tested while remaining in
a straight line.
Hose and couplings shall not exhibit any separation
or failure when tested with a pull of 45 kg. (100
pounds) for 5 minutes and when tested by
subjecting them to an internal air pressure of 2
times the maximum respirator-supply pressure that
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Tightness
Permeation of
hose by
gasoline
Detachable
coupling
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is specified by the applicant or at 173 kN/m. 2 (25
pounds per square inch) gage, whichever is higher.
Leakage of air exceeding 50 cc. per minute at each
coupling shall not be permitted when the hose and
couplings are joined and are immersed in water,
with air flowing through the respirator under a
pressure of 173 kN/m. 2 (25 pounds per square
inch) gage applied to the inlet end of the air-supply
hose, or at twice the maximum respirator-supply
pressure that is specified by the applicant,
whichever is higher.
No air leakage shall None
occur when the
hose and couplings
are joined and the
joint(s) are
immersed in water
and subjected to an
internal air pressure
of 35 kN/m. 2 (5
pounds per square
inch) gage
The permeation of Same as Same as for Type A, except the test period shall be
for Type A 1 hour.
the hose by
gasoline will be
tested by
immersing 7.6 m.
(25 feet) of hose
and one coupling in
gasoline, with air
flowing through the
hose at the rate of 8
liters per minute for
6 hours. The air
from the hose shall
not contain more
than 0.01 percent
by volume of
gasoline vapor at
the end of the test
None
None
A hand-operated detachable coupling by which the
wearer can readily attach or detach the connecting
hose shall be provided at a convenient location.
This coupling shall be durable, remain connected
under all conditions of normal respirator use, and
meet the prescribed tests for strength and tightness
of hose and couplings.
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Subpart K—Non-Powered Air-Purifying Particulate Respirators
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§84.170 Non-powered air-purifying particulate respirators; description.
(a) Non-powered air-purifying particulate respirators utilize the wearer's negative inhalation
pressure to draw the ambient air through the air-purifying filter elements (filters) to remove particulates
from the ambient air. They are designed for use as respiratory protection against atmospheres with
particulate contaminants (e.g., dusts, fumes, mists) that are not immediately dangerous to life or health
and that contain adequate oxygen to support life.
(b) Non-powered air-purifying particulate respirators are classified into three series, N-, R-, and
P-series. The N-series filters are restricted to use in those workplaces free of oil aerosols. The R- and
P-series filters are intended for removal of any particulate that includes oil-based liquid particulates.
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(c) Non-powered air-purifying particulate respirators are classified according to the efficiency level
of the filter(s) as tested according to the requirements of this part.
(1) N100, R100, and P100 filters shall demonstrate a minimum efficiency level of 99.97 percent.
(2) N99, R99, and P99 filters shall demonstrate a minimum efficiency level of 99 percent.
(3) N95, R95, and P95 filters shall demonstrate a minimum efficiency level of 95 percent.
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§84.171 Non-powered air-purifying particulate respirators; required components.
(a) Each non-powered air-purifying particulate respirator described in §84.170 shall, where its
design requires, contain the following component parts:
(1) Facepiece, mouthpiece with noseclip, hood, or helmet;
(2) Filter unit;
(3) Harness;
(4) Attached blower; and
(5) Breathing tube.
(b) The components of each non-powered air-purifying particulate respirator shall meet the
minimum construction requirements set forth in subpart G of this part.
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§84.172 Breathing tubes; minimum requirements.
Flexible breathing tubes used in conjunction with respirators shall be designed and constructed to
prevent:
(a) Restriction of free head movement;
(b) Disturbance of the fit of facepieces, mouthpieces, hoods, or helmets;
(c) Interference with the wearer's activities; and
(d) Shutoff of airflow due to kinking, or from chin or arm pressure.
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§84.173 Harnesses; installation and construction; minimum requirements.
(a) Each respirator shall, where necessary, be equipped with a suitable harness designed and
constructed to hold the components of the respirator in position against the wearer's body.
(b) Harnesses shall be designed and constructed to permit easy removal and replacement of
respirator parts, and, where applicable, provide for holding a full facepiece in the ready position when
not in use.
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§84.174 Respirator containers; minimum requirements.
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(a) Except as provided in paragraph (b) of this section each respirator shall be equipped with a
substantial, durable container bearing markings which show the applicant's name, the type of
respirator it contains, and all appropriate approval labels.
(b) Containers for single-use respirators may provide for storage of more than one respirator,
however, such containers shall be designed and constructed to prevent contamination of respirators
which are not removed, and to prevent damage to respirators during transit.
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§84.175 Half-mask facepieces, full facepieces, hoods, helmets, and mouthpieces; fit; minimum
requirements.
(a) Half-mask facepieces and full facepieces shall be designed and constructed to fit persons with
various facial shapes and sizes either:
(1) By providing more than one facepiece size; or
(2) By providing one facepiece size which will fit varying facial shapes and sizes.
(b) Full facepieces shall provide for optional use of corrective spectacles or lenses, which shall not
reduce the respiratory protective qualities of the respirator.
(c) Hoods and helmets shall be designed and constructed to fit persons with various head sizes,
provide for the optional use of corrective spectacles or lenses, and insure against any restriction of
movement by the wearer.
(d) Mouthpieces shall be equipped with noseclips which are securely attached to the mouthpiece
or respirator and provide an airtight seal.
(e) Facepieces, hoods, and helmets shall be designed to prevent eyepiece fogging.
(f) Half-mask facepieces shall not interfere with the fit of common industrial safety corrective
spectacles.
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§84.176 Facepieces, hoods, and helmets; eyepieces; minimum requirements.
Facepieces, hoods, and helmets shall be designed and constructed to provide adequate vision
which is not distorted by the eyepieces.
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§84.177 Inhalation and exhalation valves; minimum requirements.
(a) Inhalation and exhalation valves shall be protected against distortion.
(b) Inhalation valves shall be designed and constructed and provided where necessary to prevent
excessive exhaled air from adversely affecting filters, except where filters are specifically designed to
resist moisture.
(c) Exhalation valves shall be:
(1) Provided where necessary;
(2) Protected against damage and external influence; and
(3) Designed and constructed to prevent inward leakage of contaminated air.
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§84.178 Head harnesses; minimum requirements.
(a) All facepieces shall be equipped with head harnesses designed and constructed to provide
adequate tension during use and an even distribution of pressure over the entire area in contact with
the face.
(b) Facepiece head harnesses, except those employed on single-use respirators, shall be
adjustable and replaceable.
(c) Mouthpieces shall be equipped, where applicable, with adjustable and replaceable harnesses,
designed and constructed to hold the mouthpiece in place.
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§84.179 Non-powered air-purifying particulate respirators; filter identification.
(a) The respirator manufacturer, as part of the application for certification, shall specify the filter
series and the filter efficiency level (i.e., “N95”, “R95, “P95”, “N99, “R99”, “P99”, “N100”, “R100”, or
“P100”) for which certification is being sought.
(b) Filters shall be prominently labeled as follows:
(1) N100 filters shall be labeled “N100 Particulate Filter (99.97% filter efficiency level)” and shall
be a color other than magenta.
(2) R100 filters shall be labeled “R100 Particulate Filter (99.97% filter efficiency level)” and shall
be a color other than magenta.
(3) P100 filters shall be labeled “P100 Particulate Filter (99.97% filter efficiency level)” and shall
be color coded magenta.
(4) N99 filters shall be labeled “N99 Particulate Filter (99% filter efficiency level)” and shall be a
color other than magenta.
(5) R99 filters shall be labeled “R99 Particulate Filter (99% filter efficiency level)” and shall be a
color other than magenta.
(6) P99 filters shall be labeled “P99 Particulate Filter (99% filter efficiency level)” and shall be a
color other than magenta.
(7) N95 filters shall be labeled as “N95 Particulate Filter (95% filter efficiency level)” and shall be a
color other than magenta.
(8) R95 filters shall be labeled as “R95 Particulate Filter (95% filter efficiency level)” and shall be a
color other than magenta.
(9) P95 filters shall be labeled as “P95 Particulate Filter (95% filter efficiency level)” and shall be a
color other than magenta.
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§84.180 Airflow resistance tests.
(a) Resistance to airflow will be measured in the facepiece, mouthpiece, hood, or helmet of a
particulate respirator (complete respirator) mounted on a test fixture with air flowing at continuous rate
of 85 ±2 liters per minute, before each test conducted in accordance with §84.182.
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(b) The resistances for particulate respirators upon initial inhalation shall not exceed 35 mm water
column height pressure and upon initial exhalation shall not exceed 25 mm water column height
pressure.
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§84.181 Non-powered air-purifying particulate filter efficiency level determination.
(a) Twenty filters of each non-powered air-purifying particulate respirator model shall be tested for
filter efficiency against:
(1) A solid sodium chloride particulate aerosol as per this section, if N-series certification is
requested by the applicant.
(2) A dioctyl phthalate or equivalent liquid particulate aerosol as per this section, if R-series or
P-series certification is requested by the applicant.
(b) Filters including holders and gaskets; when separable, shall be tested for filter efficiency level,
as mounted on a test fixture in the manner as used on the respirator.
(c) Prior to filter efficiency testing of 20 N-series filters, the 20 to be tested shall be taken out of
their packaging and placed in an environment of 85 ±5 percent relative humidity at 38 ±2.5 °C for 25
±1 hours. Following the pre-conditioning, filters shall be sealed in a gas-tight container and tested
within 10 hours.
(d) When the filters do not have separable holders and gaskets, the exhalation valves shall be
blocked so as to ensure that leakage, if present, is not included in the filter efficiency level evaluation.
(e) For non-powered air-purifying particulate respirators with a single filter, filters shall be tested at
a continuous airflow rate of 85 ±4 liters per minute. Where filters are to be used in pairs, the testaerosol airflow rate shall be 42.5 ±2 liters per minute through each filter.
(f) Filter efficiency test aerosols. (1) When testing N-series filters, a sodium chloride or equivalent
solid aerosol at 25 ±5 °C and relative humidity of 30 ±10 percent that has been neutralized to the
Boltzmann equilibrium state shall be used. Each filter shall be challenged with a concentration not
exceeding 200 mg/m3.
(2) When testing R-series and P-series filters, a neat cold-nebulized dioctyl phthalate (DOP) or
equivalent aerosol at 25 ±5 °C that has been neutralized to the Boltzmann equilibrium state shall be
used. Each filter shall be challenged with a concentration not exceeding 200 mg/m3.
(3) The test shall continue until minimum efficiency is achieved or until an aerosol mass of at least
200 ±5 mg has contacted the filter. For P-series filters, if the filter efficiency is decreasing when the
200 ±5 mg challenge point is reached, the test shall be continued until there is no further decrease in
efficiency.
(g) The sodium chloride test aerosol shall have a particle size distribution with count median
diameter of 0.075 ±0.020 micrometer and a standard geometric deviation not exceeding 1.86 at the
specified test conditions as determined with a scanning mobility particle sizer or equivalent. The DOP
aerosol shall have a particle size distribution with count median diameter of 0.185 ±0.020 micrometer
and a standard geometric deviation not exceeding 1.60 at the specified test conditions as determined
with a scanning mobility particle sizer or equivalent.
(h) The efficiency of the filter shall be monitored and recorded throughout the test period by a
suitable forward-light-scattering photometer or equivalent instrumentation.
(i) The minimum efficiency for each of the 20 filters shall be determined and recorded and be
equal to or greater than the filter efficiency criterion listed for each level as follows:
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P100, R100 and N100: Efficiency ≥99.97%
P99, R99 and N99: Efficiency ≥99%
P95, R95 and N95: Efficiency ≥95%
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§84.182 Exhalation valve leakage test; minimum requirements.
(a) Dry exhalation valves and valve seats will be subjected to a suction of 25 mm. water-column
height while in a normal operating position.
(b) Leakage between the valve and valve seat shall not exceed 30 milliliters per minute.
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Subpart L—Chemical Cartridge Respirators
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§84.190 Chemical cartridge respirators: description.
(a) Chemical cartridge respirators including all completely assembled respirators which are
designed for use as respiratory protection during entry into or escape from atmospheres not
immediately dangerous to life and health, are described according to the specific gases or vapors
against which they are designed to provide respiratory protection, as follows:
Type of chemical cartridge respirator1
Ammonia
Chlorine
Hydrogen chloride
Methyl amine
Organic vapor
Maximum use concentration, parts per million
300
10
50
100
2
1,000
50
10
Sulfur dioxide
Vinyl chloride
1
Not for use against gases or vapors with poor warning properties (except where MSHA or
Occupational Safety and Health Administration standards may permit such use for a specific gas or
vapor) or those which generate high heats of reaction with sorbent material in the cartridge.
2
Maximum use concentrations are lower for organic vapors which produce atmospheres
immediately hazardous to life or health at concentrations equal to or lower than this concentration.
(b) Chemical cartridge respirators for respiratory protection against gases or vapors, which are not
specifically listed with their maximum use concentration, may be approved if the applicant submits a
request for such approval, in writing, to the Institute. The Institute shall consider each such application
and accept or reject the application after a review of the effects on the wearer's health and safety and
in the light of any field experience in use of chemical cartridge respirators as protection against such
hazards.
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§84.191 Chemical cartridge respirators; required components.
(a) Each chemical cartridge respirator described in §84.190 shall, where its design requires,
contain the following component parts:
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(1) Facepiece, mouthpiece, and noseclip, hood, or helmet;
(2) Cartridge;
(3) Cartridge with filter;
(4) Harness;
(5) Breathing tube; and
(6) Attached blower.
(b) The components of each chemical cartridge respirator shall meet the minimum construction
requirements set forth in subpart G of this part.
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§84.192 Cartridges in parallel; resistance requirements.
Where two or more cartridges are used in parallel, their resistance to airflow shall be essentially
equal.
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§84.193 Cartridges; color and markings; requirements.
The color and markings of all cartridges or labels shall conform with the requirements of the
American National Standards Institute, American National Standard for Identification of Air-Purifying
Respirator Canisters and Cartridges, ANSI K13.1-1973. ANSI K13.1 is incorporated by reference and
has been approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1
CFR part 51. Copies may be obtained from American National Standards Institute, Inc., 1430
Broadway, New York, NY 10018. Copies may be inspected at the NIOSH, Certification and Quality
Assurance Branch, 1095 Willowdale Road, Morgantown, WV 26505-2888, or at the National Archives
and Records Administration (NARA). For information on the availability of this material at NARA, call
202-741-6030 , or go to:
http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.
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§84.194 Filters used with chemical cartridges; location; replacement.
(a) Particulate matter filters used in conjunction with a chemical cartridge shall be located on the
inlet side of the cartridge.
(b) Filters shall be incorporated in or firmly attached to the cartridge and each filter assembly shall,
where applicable, be designed to permit its easy removal from and replacement on the cartridge.
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§84.195 Breathing tubes; minimum requirements.
Flexible breathing tubes used in conjunction with respirators shall be designed and constructed to
prevent:
(a) Restriction of free head movement;
(b) Disturbance of the fit of facepieces, mouthpieces, hoods, or helmets;
(c) Interference with the wearer's activities; and
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(d) Shutoff of airflow due to kinking, or from chin or arm pressure.
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§84.196 Harnesses; installation and construction; minimum requirements.
(a) Each respirator shall, where necessary, be equipped with a suitable harness designed and
constructed to hold the components of the respirator in position against the wearer's body.
(b) Harnesses shall be designed and constructed to permit easy removal and replacement of
respirator parts and, where applicable, provide for holding a full facepiece in the ready position when
not in use.
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§84.197 Respirator containers; minimum requirements.
Respirators shall be equipped with a substantial, durable container bearing markings which show
the applicant's name, the type and commercial designation of the respirator it contains and all
appropriate approval labels.
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§84.198 Half-mask facepieces, full facepieces, mouthpieces, hoods, and helmets; fit; minimum
requirements.
(a) Half-mask facepieces and full facepieces shall be designed and constructed to fit persons with
various facial shapes and sizes either:
(1) By providing more than one facepiece size; or
(2) By providing one facepiece size which will fit varying facial shapes and sizes.
(b) Hoods and helmets shall be designed and constructed to fit persons with various head sizes,
provide for the optional use of corrective spectacles or lenses, and insure against any restriction of
movement by the wearer.
(c) Mouthpieces shall be equipped with noseclips which are securely attached to the mouthpiece
or respirator and provide an airtight fit.
(d) Full facepieces shall provide for optional use of corrective spectacles or lenses which shall not
reduce the respiratory protective qualities of the respirator.
(e) Facepieces, hoods, and helmets shall be designed to prevent eyepiece fogging.
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§84.199 Facepieces, hoods, and helmets; eyepieces; minimum requirements.
Facepieces, hoods, and helmets shall be designed and constructed to provide adequate vision
which is not distorted by the eyepieces.
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§84.200 Inhalation and exhalation valves; minimum requirements.
(a) Inhalation and exhalation valves shall be provided where necessary and protected against
distortion.
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(b) Inhalation valves shall be designed and constructed to prevent excessive exhaled air from
entering cartridges or adversely affecting canisters.
(c) Exhalation valves shall be—
(1) Protected against damage and external influence; and
(2) Designed and constructed to prevent inward leakage of contaminated air.
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§84.201 Head harnesses; minimum requirements.
(a)(1) Facepieces for chemical cartridge respirators other than single-use vinyl chloride shall be
equipped with adjustable and replaceable head harnesses designed and constructed to provide
adequate tension during use and an even distribution of pressure over the entire area in contact with
the face.
(2) Facepieces for single-use vinyl chloride respirators shall be equipped with adjustable head
harnesses designed and constructed to provide adequate tension during use and an even distribution
of pressure over the entire area in contact with the face.
(b) Mouthpieces shall be equipped where applicable, with an adjustable and replaceable harness
designed and constructed to hold the mouthpiece in place.
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§84.202 Air velocity and noise levels; hoods and helmets; minimum requirements.
Noise levels generated by the respirator will be measured inside the hood or helmet at maximum
airflow obtainable and shall not exceed 80 dBA.
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§84.203 Breathing resistance test; minimum requirements.
(a) Resistance to airflow will be measured in the facepiece, mouthpiece, hood, or helmet of a
chemical cartridge respirator mounted on a test fixture with air flowing at a continuous rate of 85 liters
per minute, both before and after each test conducted in accordance with §§84.206 through 84.207.
(b) The maximum allowable resistance requirements for chemical cartridge respirators are as
follows:
MAXIMUM RESISTANCE
[Millimeter water column height]
Inhalation
Type of chemical-cartridge respirator
Other than single-use vinyl chloride respirators:
For gases, vapors, or gases and vapors
For gases, vapors, or gases and vapors, and particulates
Single-use respirator with valves:
For vinyl chloride
For vinyl chloride and particulates
Single-use respirator without valves:
For vinyl chloride
Initial Final1 Exhalation
40
50
45
70
20
20
20
30
25
45
20
2
15
20
(2)
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25
(2)
40
1
Measured at end of service life specified in Table 11 of this subpart.
2
Same as inhalation.
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§84.204 Exhalation valve leakage test; minimum requirements.
(a) Dry exhalation valves and valve seats will be subjected to a suction of 25 mm. water-column
height while in a normal operating position.
(b) Leakage between the valve and valve seat shall not exceed 30 milliliters per minute.
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§84.205 Facepiece test; minimum requirements.
(a) The complete chemical cartridge respirator will be fitted to the faces of persons having varying
facial shapes and sizes.
(b) Where the applicant specifies a facepiece size or sizes for the respirator together with the
approximate measurement of faces they are designed to fit, the Institute will provide test subjects to
suit such facial measurements.
(c) Any chemical cartridge respirator part which must be removed to perform the facepiece or
mouthpiece fit test shall be replaceable without special tools and without disturbing facepiece or
mouthpiece fit.
(d) The facepiece or mouthpiece fit test using the positive or negative pressure recommended by
the applicant and described in his instructions will be used before each test.
(e)(1) Each wearer will enter a chamber containing 100 p.p.m. isoamyl acetate vapor for halfmask facepieces, and 1,000 p.p.m. for full facepieces, mouthpieces, hoods, and helmets.
(2) The facepiece or mouthpiece may be adjusted, if necessary, in the test chamber before
starting the test.
(3) Each wearer will remain in the chamber for 8 minutes while performing the following activities:
(i) Two minutes, nodding and turning head;
(ii) Two minutes, calisthenic arm movements;
(iii) Two minutes, running in place; and
(iv) Two minutes, pumping with a tire pump into a 28-liter (1 cubic-foot) container.
(4) Each wearer shall not detect the odor of isoamyl-acetate vapor during the test.
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§84.206 Particulate tests; respirators with filters; minimum requirements; general.
(a) Three respirators with cartridges containing, or having attached to them, filters for protection
against particulates will be tested in accordance with the provisions of §84.207.
(b) In addition to the test requirements set forth in paragraph (a) of this section, three such
respirators will be tested, as appropriate, in accordance with the provisions of §§84.179 through
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84.183; however, the maximum allowable resistance of complete particulate, and gas, vapor, or gas
and vapor chemical cartridge respirators shall not exceed the maximum allowable limits set forth in
§84.203.
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§84.207 Bench tests; gas and vapor tests; minimum requirements; general.
(a) Bench tests will be made on an apparatus that allows the test atmosphere at 50 ±5 percent
relative humidity and room temperature, approximately 25 °C, to enter the cartridges continuously at
predetermined concentrations and rates of flow, and that has means for determining the test life of the
cartridges.
(b) Where two cartridges are used in parallel on a chemical cartridge respirator, the bench test will
be performed with the cartridges arranged in parallel, and the test requirements will apply to the
combination rather than to the individual cartridges.
(c) Three cartridges or pairs of cartridges will be removed from containers and tested as received
from the applicant.
(d) Two air purifying cartridges or pairs of cartridges will be equilibrated at room temperature by
passing 25 percent relative humidity air through them at the flow rate of 25 liters per minute (l.p.m.) for
6 hours.
(e) Two air purifying cartridges or pairs of cartridges will be equilibrated by passing 85 percent
relative humidity air through them at the flow rate of 25 l.p.m.
(f) All cartridges will be resealed, kept in an upright position, at room temperatures, and tested
within 18 hours.
(g) Cartridges will be tested and shall meet the minimum requirements set forth in Table 11 of this
subpart.
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Tables to Subpart L of Part 84
TABLES 9-10 [RESERVED]
[42 CFR part 84, subpart L]
Test
condition
As received
Equilibrated
As received
Equilibrated
As received
Test atmosphere
Gas or Concentration Flowrate Number Penetration1 Minimum
vapor
(p.p.m.)
(l.p.m.) of tests
(p.p.m.)
life2 (min.)
1000
64
3
50
50
NH3
NH3
1000
32
4
50
50
Cl2
500
64
3
5
35
Cl2
500
32
4
5
35
HCl
500
64
3
5
50
Cartridge
Ammonia
Ammonia
Chlorine
Chlorine
Hydrogen
chloride
Hydrogen
Equilibrated HCl
chloride
Methylamine As received CH3
NH2
Methylamine Equilibrated CH3
NH2
500
32
4
5
50
1000
64
3
10
25
1000
32
4
10
25
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Organic
As received
vapors
Organic
Equilibrated
vapors
Sulfur dioxide As received
Sulfur dioxide Equilibrated
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CCl4
1000
64
3
5
50
CCl4
1000
32
4
5
50
SO2
SO2
500
500
64
32
3
4
5
5
30
30
1
Minimum life will be determined at the indicated penetration.
2
Where a respirator is designed for respiratory protection against more than one type of gas or
vapor, as for use in ammonia and in chlorine, the minimum life shall be one-half that shown for each
type of gas or vapor. Where a respirator is designed for respiratory protection against more than one
gas of a type, as for use in chlorine and sulfur dioxide, the stated minimal life shall apply.
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Subpart M [Reserved]
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Subpart N—Special Use Respirators
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§84.250 Vinyl chloride respirators; description.
Vinyl chloride respirators, including all completely assembled respirators which are designed for
use as respiratory protection during entry into and escape from vinyl chloride atmospheres containing
adequate oxygen to support life, are described according to their construction as follows:
(a) Front-mounted or back-mounted gas masks;
(b) Chin-style gas masks;
(c) Chemical-cartridge respirators;
(d) Powered air-purifying respirators; and
(e) Other devices, including combination respirators.
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§84.251 Required components.
(a) Each vinyl chloride respirator described in §84.250 shall, where its design requires, contain the
following component parts:
(1) Facepiece;
(2) Canister with end-of-service-life indicator;
(3) Cartridge with end-of-service-life indicator;
(4) Harness;
(5) Attached blower; and
(6) Breathing tube.
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(b) The components of each vinyl chloride respirator shall meet the minimum construction
requirements set forth in Subpart G of this part.
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§84.252 Gas masks; requirements and tests.
(a) Except for the tests prescribed in §84.126, the minimum requirements and performance tests
for gas masks, prescribed in Subpart I of this part, are applicable to vinyl chloride gas masks.
(b) The following bench tests are applicable to canisters designed for use with gas masks for
entry into and escape from vinyl chloride atmospheres containing adequate oxygen to support life:
(1) Four canisters will be equilibrated at 25 ±5 °C by passing 85 ±5 percent relative humidity air
through them at 64 liters per minute for six hours.
(2) The equilibrated canisters will be resealed, kept in an upright position at room temperature,
and tested according to paragraph (b)(3) of this section within 18 hours.
(3) The canisters equilibrated and stored as described in paragraphs (b) (1) and (2) of this section
will be tested on an apparatus that allows the test atmosphere at 85 ±5 percent relative humidity and
25 ±5 °C to enter the canister continuously at a concentration of 25 ppm vinyl chloride monomer at a
total flow rate of 64 liters per minute.
(4) The maximum allowable penetration after six hours of testing according to paragraph (b)(3) of
this section shall not exceed 1 ppm vinyl chloride.
(c) Where canisters are submitted for testing and approval with a service life of more than four
hours, the period of time for testing for vinyl chloride penetration will be performed at 150% of the
service life specified in the manufacturer's application. (Example: If a manufacturer requests approval
of a respirator for six hours use against exposure to vinyl chloride, the maximum allowable penetration
after nine hours of testing shall not exceed 1 ppm vinyl chloride.)
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§84.253 Chemical-cartridge respirators; requirements and tests.
(a) Except for the tests prescribed in §§84.206 and 84.207, the minimum requirements and
performance tests for chemical-cartridge respirators prescribed in Subpart L of this part are applicable
to replaceable-cartridge and single-use vinyl chloride chemical-cartridge respirators.
(b) The following bench tests are applicable to cartridges designed for use with chemical-cartridge
respirators for entry into and escape from vinyl chloride atmospheres containing adequate oxygen to
support life:
(1) Where two cartridges are used in parallel on a chemical-cartridge respirator, the bench test
requirements will apply to the combination rather than the individual cartridges.
(2) Four cartridges or pairs of cartridges will be equilibrated at 25 ±5 °C by passing 85 ±5 percent
relative humidity air through them at 25 liters per minute for six hours.
(3) The equilibrated cartridges will be resealed, kept in an upright position, at room temperature,
and tested according to paragraphs (b)(4) and (b)(5) of this section for other than single-use
respirators or according to paragraphs (b)(6) and (b)(7) of this section for single-use respirators within
18 hours.
(4) The cartridges or pairs of cartridges for other than single-use respirators, equilibrated and
stored as described in paragraphs (b)(1), (b)(2), and (b)(3) of this section, will be tested on an
apparatus that allows the test atmosphere at 85 ±5 percent relative humidity and 25 ±5 °C, to enter the
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cartridges or pairs of cartridges continuously at a concentration of 10 ppm vinyl chloride monomer at a
total flowrate of 64 liters per minute.
(5) The maximum allowable penetration after 90 minutes testing of cartridges or pairs of cartridges
for other than single-use respirators, according to paragraph (b)(4) of this section shall not exceed 1
ppm vinyl chloride.
(6) The single-use respirators, equilibrated and stored as described in paragraphs (b)(2) and (b)
(3) of this section, will be tested on an apparatus that allows a test atmosphere at 85 ±5 percent
relative humidity and 25 ±5 °C to be cycled through the respirator by a breathing machine at a
concentration of 10 ppm vinyl chloride monomer at the rate of 24 respirations per minute at a minute
volume of 40 ±0.6 liters. Air exhaled through the respirator will be 35 ±2 °C with 94 ±3 percent relative
humidity.
(7) The maximum allowable penetration after 144 minutes testing of respirators, according to
paragraph (b)(6) of this section, shall not exceed 1 ppm vinyl chloride.
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§84.254 Powered air-purifying respirators; requirements and tests.
(a) Except for the tests prescribed in §84.207, the minimum requirements and performance tests
for powered air-purifying respirators prescribed in subpart L of this part are applicable to vinyl chloride
powered air-purifying respirators.
(b) The following bench tests are applicable to cartridges designed for use with powered airpurifying respirators for entry into and escape from vinyl chloride atmospheres containing adequate
oxygen to support life:
(1) Four cartridges will be equilibrated at 25 ±°C by passing 85 ±5 percent relative humidity air
through them at 115 liters per minute for tight-fitting facepieces and 170 liters per minute for loosefitting hoods and helmets, for six hours.
(2) The equilibrated cartridges will be resealed, kept in an upright position at room temperature
and tested according to paragraph (b)(3) of this section within 18 hours.
(3) The cartridges equilibrated and stored as described in paragraphs (b) (1) and (2) of this
section will be tested on an apparatus that allows the test atmosphere at 85 ±5 percent relative
humidity and 25 ±5 °C to enter the cartridge continuously at a concentration of 25 ppm vinyl chloride
monomer at a total flow rate of 115 liters per minute for tight-fitting facepieces and 170 liters per
minute for loose-fitting hoods and helmets.
(4) The maximum allowable penetration after six hours of testing according to paragraph (b)(3) of
this section shall not exceed 1 ppm vinyl chloride.
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§84.255 Requirements for end-of-service-life indicator.
(a) Each canister or cartridge submitted for testing and approval in accordance with §§84.252,
84.253, and 84.254 shall be equipped with a canister or cartridge end-of-service-life indicator which
shows a satisfactory indicator change or other obvious warning before 1 ppm vinyl chloride penetration
occurs. The indicator shall show such change or afford such warning at 80 ±10 percent of the total
service life to 1 ppm leakage, as determined by continuing each test described in §§84.252(b), 84.253
(b), and 84.254(b) until a 1 ppm leakage of vinyl chloride occurs.
(b) The applicant shall provide sufficient pretest data to verify the performance of the end-ofservice-life indicator required in paragraph (a) of this section.
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§84.256 Quality control requirements.
(a) In addition to the construction and performance requirements specified in §§84.251, 84.252,
84.253, 84.254, and 84.255, the quality control requirements in paragraphs (b), (c), and (d) of this
section apply to approval of gas masks, chemical cartridge respirators, and powered air-purifying
respirators for entry into and escape from vinyl chloride atmospheres containing adequate oxygen to
support life.
(b) The respirators submitted for approval as described in paragraph (a) of this section shall be
accompanied by a complete quality control plan meeting the requirements of subpart E of this part.
(c)(1) The applicant shall specify in the plan that a sufficient number of samples will be drawn from
each bulk container of sorbent material and that where activated carbon is used, the following specific
tests will be performed:
(i) Apparent density;
(ii) Iodine number;
(iii) Moisture content;
(iv) Carbon tetrachloride number; and
(v) Mesh size.
(2) The tests in paragraph (c)(1) of this section shall be performed in a quantity necessary to
assure continued satisfactory conformance of the canisters and cartridges to the requirements of this
subpart.
(d) Final performance quality control tests on the complete canisters and cartridges shall be
accomplished using the bench tests and procedures prescribed in §§84.252, 84.253, 84.254, and
84.255.
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§84.257 Labeling requirements.
(a) A warning shall be placed on the label of each gas mask, chemical-cartridge respirator, and
powered air-purifying respirator, and on the label of each canister and cartridge, alerting the wearer to
the need for a fitting test in accordance with the manufacturer's facepiece fitting instructions, providing
service life information, providing specific instructions for disposal, and advising that the wearer may
communicate to NIOSH any difficulties that may be experienced in the design and performance of any
gas mask, chemical-cartridge respirator, or powered air-purifying respirator approved under the
requirements of this subpart. The service lives of respirators meeting the test requirements of this
subpart shall be specified as follows:
. . . . . . . . . . . . . . . . respirator
Chemical-cartridge
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1. hour.
....
. . . . mask
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4. hours.
.....
Gas
. . . . . . . . air-purifying
. . . . . . . . . .respirator
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4. hours.
.....
Powered
(b) Where the service life of a respirator is approved for more than four hours, the service life for
which the respirator has been approved will be specified.
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§84.258 Fees.
The following fees shall be charged for the examination, inspection, and testing of complete
assemblies and components of respirators described in §§84.250 and 84.251:
. . . . . . . . .gas
Complete
. . . mask
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .$1,100
.....
. . . . . . . . .chemical-cartridge
. . . . . . . . . . . . . . .respirator
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1,150
....
Complete
. . . . . . . . .powered
. . . . . . . air-purifying
. . . . . . . . . .respirator
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1,500
....
Complete
. . . . . . . .or. .cartridge
. . . . . . . only
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 750
...
Canister
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Subpart O—Closed-Circuit Escape Respirators
SOURCE: 77 FR 14193, Mar. 8, 2012, unless otherwise noted.
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§84.300 Closed-circuit escape respirator; description.
The closed-circuit escape respirator (CCER), technically a subset of self-contained breathing
apparatus (SCBAs) which are otherwise covered under subpart H of this part, is used in certain
industrial and other work settings in emergencies to enable users to escape from atmospheres that
can be immediately dangerous to life and health. Known in the mining community as self-contained
self-rescuers (SCSRs), and in other industries as emergency escape breathing devices (EEBDs) or
apparatus (EEBAs), CCERs are relied upon primarily by underground coal miners, sailors in federal
service, and railroad workers to escape dangerous atmospheres after a fire, explosion, or chemical
release. CCERs are commonly worn on workers' belts or stored in close proximity to be accessible in
an emergency. They are relatively small respirators, typically the size of a water canteen, that employ
either compressed oxygen with a chemical system for removing exhaled carbon dioxide from the
breathing circuit, or a chemical that both provides a source of oxygen and removes exhaled carbon
dioxide. Users re-breathe their exhalations after the oxygen and carbon dioxide levels have been
restored to suitable levels, which distinguishes these “closed-circuit” self-contained respirators from
“open-circuit” self-contained respirators, which vent each exhalation.
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§84.301 Applicability to new and previously approved CCERs.
This subpart applies to the following CCERs:
(a) All CCERs submitted to NIOSH for a certificate of approval after April 9, 2012; and
(b) All CCERs manufactured and labeled NIOSH-approved and sold by manufacturers after April
9, 2015.
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§84.302 Required components, attributes, and instructions.
(a) Each CCER must include components and/or attributes appropriate to its design, as follows:
(1) Eye protection: Each CCER must include safety goggles or an escape hood lens that protects
against impact, fogging, and permeation by gas, vapor, and smoke, as specified under §84.308(c);
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(2) Thermal exposure indicators: If the manufacturer specifies a maximum and/or minimum
environmental temperature limit for storage of the CCER, then the CCER must include a component,
an attribute, or other means by which a person can determine whether the CCER has been exposed
to temperatures that exceed the limit(s);
(3) Chemical bed physical integrity indicators: If the CCER includes a chemical oxygen storage or
chemical carbon dioxide scrubber that can be functionally damaged by impact, vibration, or any other
environmental factor to which the CCER might be exposed, then the CCER must include a
component, an attribute, or other means by which a person can detect any damage or alteration of the
chemical oxygen storage or chemical carbon dioxide scrubber that could diminish the NIOSH-certified
performance of the CCER, as tested under this subpart;
(4) Oxygen storage vessel: If the CCER includes an oxygen storage vessel, the vessel must be
approved by the U.S. Department of Transportation (DOT) under 49 CFR part 107, “Hazardous
Materials Program Procedures,” unless exempted under subpart B of 49 CFR part 107;
(5) Tamper-resistant/tamper-evident casing: If the CCER is not designed for its casing to be
opened prior to use for an actual escape (e.g., for maintenance, escape drills, or inspection of the
components), the casing must include a component, an attribute, or other means to prevent a person
from accidentally opening the casing and, upon such opening, to either prevent the casing from being
closed or to clearly indicate to a potential user that the casing has been previously opened; and
(6) Moisture damage indicators: If the CCER is not designed for its casing to be opened for
inspection of its internal components, the casing must include a component, an attribute, or other
means by which a person can detect any ingress of water or water vapor that could diminish the
NIOSH-certified performance, as tested under this subpart.
(7) Oxygen starter indicators: If the oxygen starter is a critical component of the CCER design,
then the CCER must include a component, an attribute, or other means by which a person can detect
observable damage, premature activation, or recognized potential defect of the starter.
(b) Where an indicator is required, the indication of the occurrence of the monitored condition
must be clear and unambiguous: It must not depend on a subjective interpretation of subtle,
graduated, or other non-discrete changes to the indicator.
(c) Where an indicator is required, the manufacturer shall provide NIOSH with an explanation of
its function and operation, and shall provide relevant data and equipment to allow NIOSH to conduct a
thorough evaluation of its accuracy and reliability.
(d) The components of each CCER must meet the general construction requirements specified in
§84.61.
(e) The CCER must be resistant to the permeation of the breathing circuit by gasoline vapors. To
verify such resistance, NIOSH will test one unit by applying the gasoline vapor permeation test
specified on the NIOSH Web site at http://www.cdc.gov/niosh/npptl, using a breathing machine
applying a ventilation rate of 40 liters per minute, performing the test for the longest duration achieved
by any of the units that underwent the capacity testing specified under §84.304.
(f) Exposed parts of the CCER must not be composed of metals or other materials that could,
upon impact, create frictional sparks or that could store or generate static electrical charges of
sufficient energy to ignite flammable gaseous mixtures.
(g) The design, construction, or materials of the CCER must not constitute a hazard to the user as
a result of the wearing, inspection, or use of the CCER.
(h) CCER instructions and a service life plan must be provided to purchasers. This document
must be clearly written.
(1) Instructions must address the following topics and elements:
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(i) An explanation of how the CCER works;
(ii) A schematic diagram of the CCER;
(iii) Procedures for donning and use;
(iv) Procedures for inspecting the operating condition of the CCER;
(v) Procedures and conditions for storage, including but not limited to any recommended minimum
and maximum temperatures for storage;
(vi) Limitations on use, including but not limited to any recommended minimum and maximum
temperatures for use;
(vii) Procedures for disposal; and
(viii) Procedures for registration of the unit with NIOSH, pursuant to §84.311.
(2) The service life must be addressed covering at least the following topics:
(i) The maximum number of years, from the date of manufacture, that the unit may remain
available for use; this limit is intended to prevent the continued use of a unit that the applicant cannot
assure would continue to perform as approved by NIOSH, due to reasonably foreseeable degradation
of materials used in its construction;
(ii) Any other conditions, other than that specified under paragraph (h)(2)(i) of this section, that
should govern the removal from service of the CCER (including an indication given by the activation or
operation of any required indicator showing the monitored condition has occurred); and
(iii) Any procedures by which a user or others should inspect the CCER, perform any
maintenance possible and necessary, and determine when the CCER should be removed from
service.
(i) Each individual CCER unit approval label shall identify the capacity rating and number of liters
of oxygen as determined by the capacity testing, pursuant to §84.304.
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§84.303 General testing conditions and requirements.
(a) NIOSH will conduct capacity and performance tests on the CCER using a breathing and
metabolic simulator to provide quantitative evaluations and human subjects on a treadmill to provide
qualitative evaluations. Information on the design and operation of the simulator is available from the
NIOSH Web site at http://www.cdc.gov/niosh/npptl. Technical specifications can be obtained from
NIOSH by contacting the National Personal Protective Technology Laboratory (NPPTL) by mail: P.O.
Box 18070, 626 Cochrans Mill Road, Pittsburgh, PA 15236. Telephone: 412-386-4000 (this is not a
toll-free number). Email: [email protected].
(b) Capacity, performance, and wearability tests will continuously monitor the stressors listed in
Table 1. The stressors and their respective acceptable ranges will be measured at the interface
between the CCER and the mouth by instruments capable of breath-by-breath measurement. Stressor
measurements will be evaluated as 1-minute averages. The operating averages of each stressor will
be calculated upon the completion of each test as the average of the 1-minute measurements of the
stressor recorded during the test. The level of any excursion for a stressor occurring during a test will
be defined by the 1-minute average value(s) of the excursion(s).
TABLE 1—MONITORED STRESSORS AND THEIR ACCEPTABLE RANGES
Stressor
Acceptable range operating average Acceptable range excursion
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Average inhaled CO2
<1.5%
Average inhaled O2
>19.5%
Peak Breathing Pressures ΔP ≤200 mm H2O
<43 °C
Wet-bulb temperature1
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≤4%.
≥15%.
−300 ≤ΔP ≤200 mm H2O.
≤50 °C.
1
Wet-bulb temperature is a measurement of the temperature of a wet surface. It represents the
temperature of the inhaled breathing gas in the CCER user's trachea.
(c) Capacity and performance tests will conclude when the stored breathing gas supply has been
fully expended.
(d) NIOSH will determine a CCER to have failed a capacity, performance, or wearability test if any
of the following occurs:
(1) A 1-minute average measurement of any stressor listed in Table 1 occurs outside the
acceptable excursion range specified in Table 1; or an average stressor measurement calculated at
the completion of a performance or capacity test exceeds the acceptable operating average range
specified in Table 1; or
(2) A human subject cannot complete the test for any reason related to the CCER, as determined
by NIOSH.
(e) Unless otherwise stated, tests required under this subpart will be conducted at the following
ambient conditions:
(1) Ambient temperatures of 23 °C ±3 °C; and
(2) Atmospheric pressures of 735 mm Hg ±15 mm Hg.
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§84.304 Capacity test requirements.
(a) NIOSH will conduct the capacity test on a total of 8 to 10 of the units submitted for approval, as
follows:
(1) Three units will be tested on a breathing and metabolic simulator in the condition in which they
are received from the applicant;
(2) Two units will be tested on a breathing and metabolic simulator after being subjected to the
environmental treatments specified in §84.307 of this subpart;
(3) Two units will be tested on a breathing and metabolic simulator at the cold-temperature limit
recommended by the manufacturer under §84.302(h)(1), after the unit has been stored for a minimum
of 24 hours at this limit; and
(4) One unit, in the condition in which it is received from the applicant, will be tested by a human
subject on a treadmill.
(5) To approve a CCER for use in coal mines, two units will also be tested by a human subject
under the specifications of §§84.99 and 84.100 that are applicable to man test 4.
(b) The capacity test will begin upon the first inhalation from or exhalation into the unit.
(c) Each unit will be tested at a constant work rate, depending on the capacity value specified by
the manufacturer, according to the requirements specified in Table 2. All volumes are given at
standard temperature (0 C) and pressure (760 mm Hg), dry, unless otherwise noted.
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(d) NIOSH will rate an approved CCER using the appropriate capacity rating, as specified in Table
2.
TABLE 2—CAPACITY TEST REQUIREMENTS
Capacity rating
Cap 1
Cap 2
Cap 3
Capacity
(L of O2)
20 ≤L ≤59
60 ≤L ≤79
L ≥80
VO2
(L/min)
2.50
2.00
1.35
VCO2
(L/min)
2.50
1.80
1.15
Ve
(L/min)
55
44
30
RF (Breaths/min)
22
20
18
VO2 = volume of oxygen consumed per minute; VCO 2 = volume of carbon dioxide produced per
minute.
Ve = ventilation rate in liters of air per minute; RF = respiratory frequency.
(e) NIOSH will document the least value achieved by the seven units tested using the breathing
and metabolic simulator. NIOSH will quantify this value of achieved capacity within an increment of 5
liters, rounding intermediate values to the nearest lower 5-liter increment.
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§84.305 Performance test requirements.
(a) NIOSH will conduct the performance test on a total of six of the units submitted for approval,
as follows:
(1) Three units will be tested on a breathing and metabolic simulator in the condition in which they
were received from the applicant; and
(2) Two units will be tested on a breathing and metabolic simulator after being subjected to the
environmental treatments specified in §84.307; and
(3) One unit will be tested, in the condition in which it was received from the applicant, by a
human subject on a treadmill.
(b) Except as provided under paragraph (c) of this section, the performance test will apply a
repeating cycle of work rates, according to the sequence and requirements specified in Table 3, until
the oxygen supply of the unit is exhausted.
(c) Testing of CCERs with less than 50 liters of capacity, as determined by the capacity testing
under §84.304, will require the submission of additional test units to fully apply the work-rate test
sequence and requirements specified in Table 3. The testing of each individual unit will complete the
cycle specified in Table 3 until the breathing supply of the initial test unit is exhausted. This initial test
unit will then be replaced by a second unit, which will continue the test cycle, beginning at the work
rate in the cycle at which the initial unit was exhausted, and completing the full period specified in
Table 3 for that work rate before proceeding to the subsequent work rate, if any, specified in Table 3.
Each initial testing unit will be replaced as many times as necessary to complete the cycle, not to
exceed two replacement units per initial test unit.
(d) The performance test will begin with two exhalations into the unit at the specified ventilation
rate and then follow the manufacturer's instructions to determine the design's susceptibility to hypoxia
upon initial donning.
TABLE 3—PERFORMANCE TEST REQUIREMENTS
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Work-rate
test
sequence
1. Peak
2. High
3. Low
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Duration per cycle (in
minutes)
VO2
(L/min)
5
15
10
3.00
2.00
0.50
VCO2
(L/min)
Ve
(L/min)
3.20
1.80
0.40
RF
(breaths/min)
65.0
44.0
20.0
25
20
12
VO2 = volume of oxygen consumed per minute; VCO2 = volume of carbon dioxide produced per
minute.
Ve = ventilation rate in liters of air per minute; RF = respiratory frequency.
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§84.306 Wearability test requirements.
(a) NIOSH will conduct the wearability test on a total of three of the units submitted for approval.
Three human subjects (two males and one female), one subject per unit, will conduct the test. The
three subjects will range in height and weight as follows: One subject of height ≥174 cm and weight
≥90 kg; one subject of either 163 cm ≤height <174 cm, regardless of weight, or 72 kg ≥weight <90 kg,
regardless of height; and one subject of height <163 cm and weight <72 kg. All units tested must meet
all conditions specified in this section to receive approval.
(b) NIOSH will evaluate the ease and speed with which users can don the CCER, as follows:
(1) Each test subject will be provided with manufacturer instructions, and must be able to don the
CCER correctly, isolating the lungs within 30 seconds;1 and
1
This time limit does not apply to any additional steps that might be required after the lungs are protected to
adjust the unit for wear.
(2) A CCER must not include any design, construction, or material characteristic that can be
anticipated or demonstrated, under plausible conditions, to hinder the user in the correct and timely
donning of the CCER.
(c) NIOSH will continuously monitor CCER use by each test subject during the activities specified
in Table 4 to evaluate the ability of the CCER to provide an adequate and uninterrupted breathing
supply, including but not limited to the requirements of §84.303(b), without harming or hindering a
user. NIOSH will not approve a CCER if the use of any unit during these activities indicates any
potential for the CCER to harm or hinder the user or to fail to provide an adequate and uninterrupted
breathing supply to the user during reasonably anticipated conditions and activities of an escape.
TABLE 4—WEARABILITY TEST REQUIREMENTS
Activity
Sitting
Stooped walking
Crawling
Lying on left side
Lying on right side
Lying on back
Bending over to touch toes
Turning head from side to side
Nodding head up and down
Climbing steps or a laddermill
Minimum duration
1 minute.
1 minute.
1 minute.
1 minute.
1 minute.
1 minute.
1 minute.
1 minute (at least 10 times).
1 minute (at least 10 times).
1 minute (1 step/second).
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Carrying 50-lb bag on treadmill at 5 kph
Lifting 20-lb weight from floor to an upright position
Running on treadmill at 10 kph
1 minute.
1 minute (at least 10 times).
1 minute.
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§84.307 Environmental treatments.
(a) Four units submitted for approval will be tested for capacity and performance, pursuant to the
requirements of §§84.303 through 84.305, after exposure to environmental treatments simulating
extreme storage temperatures, shock, and vibration.
(b) The units will be stored for 16 hours at a temperature of −45 °C and for 48 hours at a
temperature of 71 °C. Units will be returned to room temperature between high and low temperature
treatments. The maximum rate of change for thermal loading shall not exceed 3 °C per minute and
constant temperatures shall be maintained within ±2 °C.
(c) The units, in the casing in which they are deployed for individual use, will be subjected to
physical shock according to the following procedure:
(1) The unit will be dropped six times from a height of 1 meter onto a concrete surface; and
(2) Each drop will test a different orientation of the unit, with two drops along each of its three
major axes (top to bottom, left to right, and front to back).
(d) The units will be subjected to vibration according to the following procedure:
(1) The unit will be firmly secured to a shaker table, which will be vibrated with motion applied
along a single axis for 180 minutes;
(2) The unit will be vibrated one axis at a time along each of three axes for a total of 9 hours; and
(3) The vibration frequency regimen applied to each axis will be cyclical, repeating the sequence
and specifications provided in Table 5 every 20 minutes.
TABLE 5—VIBRATION TEST SEQUENCE
Sequence
Frequency (Hertz)
1
2
3
Acceleration g (±peak)
5-92
92-500
500-2000
2.5
3.5
1.5
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§84.308 Additional testing.
(a) NIOSH will conduct additional tests, as indicated below, on one or more of the units submitted
for approval. Each unit tested must meet the conditions specified in these tests for the CCER to
receive approval.
(b) NIOSH will perform safety hazard tests on any CCER that stores more than 200 liters of
oxygen or that stores compressed oxygen at pressures exceeding 3,000 psi. The applicant must
submit 15 units in addition to the 21-23 units required for testing under §§84.304 through 84.307.
These units will be evaluated for fire and explosion hazards using the tests specified in RI 9333, pages
4-18; RI 8890, pages 6-62; and PRC Report No. 4294, pages 18-62.
(c) NIOSH will perform the following tests on the eye protection (gas-tight goggles or escape hood
lens) of one or more units of every CCER submitted for approval:
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(1) NIOSH will test the effectiveness of the eye protection against dust using the method specified
in ISO 4855-1981(E) Clause 13, Test for protection against dust. The result will be satisfactory if the
reflectance after the test is equal to or greater than 80 percent of its value before testing.
(2) NIOSH will test the effectiveness of the eye protection against gas using the method specified
in ISO 4855-1981(E), Clause 14, Test for protection against gas. The test must not result in staining of
the area enclosed by the eye protection.
(3) NIOSH will test the durability of the eye protection using the method specified in International
Standard ISO 4855-1981(E), Sub-clause 3.1, Unmounted oculars. The lens shall not crack or fracture
as a result of the test.
(4) NIOSH will test the eye protection's resistance to fogging in accordance with the method
specified in BS EN 168:2002, Clause 16, Test for resistance to fogging of oculars. The lens shall
remain free from fogging for a minimum of 8 seconds, pursuant to Clause 16.
(d) The standards required in this section are incorporated by reference into this section with the
approval of the Director of the Federal Register under 5 U.S.C. 552(a) and 1 CFR Part 51. All
approved material is available for inspection at NIOSH, National Personal Protection Technology
Laboratory (NPPTL), Bruceton Research Center, 626 Cochrans Mill Road, Pittsburgh, PA 15236. To
arrange for an inspection at NIOSH, call 412-386-6111 . Copies are also available for inspection at
the National Archives and Records Administration (NARA). For information on the availability of this
material at NARA, call 202-741-6030 or go to
http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.
(1) British Standards Institute, 389 Chiswick High Road, London W4 4AL, UK,
http://www.bsigroup.com/en/Standards-and-Publications:
(i) BS EN 168:2002, Personal Eye Protectors—Non-Optical Test Methods, November 2001.
(ii) [Reserved]
(2) International Organization for Standardization, 1, ch. de la Voie-Creuse, Case postale 56, CH1211 Geneva 20, Switzerland, http://www.iso.org/iso/store.htm:
(i) ISO 4855-1981(E), Personal Eye Protectors—Non-Optical Test Methods, First edition April 1,
1981.
(ii) [Reserved]
(3) U.S. Department of the Interior, Bureau of Mines, 2401 E Street, NW., MS #9800, Washington,
DC 20241-0001. These reports are also available from NIOSH upon request 1-800-CDC-INFO
(232-4636).
(i) Pittsburgh Research Center (PRC) Report No. 4294, Evaluation of the Safety of One-Hour
Chemical Self Rescuers, July 1980;
(ii) Report of Investigations (RI) 8890, Evaluation of the Safety of One-Hour Compressed Oxygen
Self-Rescuers—Results of Destructive Testing, 1984;
(iii) RI 9333 Evaluation of the Safety of the CSE SR-100 Self-Contained Self-Rescuer, 1991.
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§84.309 Additional testing and requirements for dockable CCERs.
(a) NIOSH will conduct additional testing of the CCERs that are designed to allow the user to
resupply the oxygen source and the carbon dioxide scrubber while using the respirator during an
escape.
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(1) NIOSH will test the docking mechanism and procedure to ensure that they maintain the
integrity of the breathing circuit (against the intake of hazardous fumes or gases) and the continuity of
the breathing gas supply throughout the docking process.
(2) NIOSH will test the docking mechanism and procedure to ensure that users can employ the
docking process reliably, safely, and quickly under escape conditions.
(b) NIOSH will designate CCERs that pass the tests specified in this section as “Dockable.”
(c) NIOSH will assign the capacity rating to the dockable CCER, as specified under §84.304(d),
by conducting the capacity testing using only the breathing gas supply included for the initial use of the
wearable apparatus.
(d) NIOSH will test the supplemental capacities of all breathing gas resupply units produced by
the manufacturer for use with the dockable CCER. Such tests will follow procedures consistent with
those specified under §84.304, including the rating requirements in §84.304(d). The manufacturer
must label the breathing gas resupply unit to indicate its capacity as tested by NIOSH and its
compatibility with the CCER for which it is designed.
(e) NIOSH may require the applicant to provide additional units of the CCER and breathing gas
resupply units to conduct the testing specified in this section.
(f) NIOSH will not approve a CCER with docking components, with or without the “Dockable”
NIOSH designation, unless it satisfies the testing and other requirements of this section.
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§84.310 Post-approval testing.
(a) NIOSH will periodically test the capacity and performance of units of approved CCERs.
(b) NIOSH may test units that are new and/or units that have been deployed in the field and have
remaining service life.
(c) NIOSH will conduct such testing pursuant to the methods specified in §§84.303 through
84.305, except as provided under paragraph (d) of this section.
(d) The numbers of units of an approved CCER to be tested under this section may exceed the
numbers of units specified for testing in §§84.304 and 84.305.
(e) Failure of a unit to meet the capacity and performance requirements of this section may result
in revocation of the approval for the CCER or in requirements for specific remedial actions to address
the cause or causes of the failure.
(f) NIOSH will replace deployed units obtained for testing with new NIOSH-approved units of the
same or similar design, at no cost to the employer.
(g) To maintain the approved status of a CCER, an applicant must make available for purchase by
NIOSH, within 3 months of a NIOSH purchase request, the number of units requested by the Institute.
Within any 12-month period, NIOSH will not request to purchase more than 100 units for post-approval
testing.
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§84.311 Registration of CCER units upon purchase.
(a) The user instructions will include a copy of procedures for registering the units with NIOSH.
The applicant can obtain a copy of these procedures from the NIOSH web page:
http://www.cdc.gov/niosh/npptl.
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(b) The applicant shall notify in writing each purchaser of the purpose of registering a unit with
NIOSH, as specified under paragraph (c) of this section. If the purchaser is a distributor of the CCER,
the applicant must request in writing that the distributor voluntarily notify in writing each of its
purchasers of the purpose of registering a unit with NIOSH, as specified under paragraph (c) of this
section.
(c) “The National Institute for Occupational Safety and Health (NIOSH) requests, but does not
require, that purchasers of this respirator register each unit with NIOSH. Registration will enable
NIOSH, which approved this model of respirator, to attempt to notify you if a problem is discovered that
might affect the safety or performance of this respirator. Registration will also assist NIOSH in locating
deployed units to periodically evaluate whether this respirator model is remaining effective under field
conditions of storage and use.”
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Subparts P-JJ [Reserved]
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Subpart KK—Dust, Fume, and Mist; Pesticide; Paint Spray; Powered AirPurifying High Efficiency Respirators and Combination Gas Masks
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§84.1100 Scope and effective dates.
The purpose of this subpart KK is to establish procedures and requirements for issuing extensions
of approval of particulate respirators certified prior to July 10, 1995 under the provisions of 30 CFR
part 11 (See 30 CFR part 11 edition, as revised July 1, 1994.), new approvals and extensions of
approval of particulate respirators for applications that are in NIOSH receipt on July 10, 1995, and
approval of powered air-purifying respirators.
(a) Air-purifying respirators with particulate filters approved under the provisions of this subpart
after July 10, 1995 will have a 30 CFR part 11 approval label.
(b) Only changes or modifications of non-powered air-purifying respirators with particulate filters
approved under the provisions of subparts I, K, L, or M of 30 CFR part 11 or paragraph (a) of this
section and deemed necessary by NIOSH to ensure the health and safety of the wearer will be
approved until July 10, 1998 and will have a 30 CFR part 11 approval label.
(c) Only changes or modifications of powered air-purifying respirators with particulate filters
approved under the provisions of subparts I, K, L, or M of 30 CFR part 11 or paragraph (a) of this
section and deemed necessary by NIOSH to ensure the health and safety of the wearer will be
approved under this subpart until July 10, 1998 and will have a 30 CFR part 11 label.
(d) Approval of powered air-purifying respirators will be issued under this subpart. Particulate
filters for powered air-purifying respirators approved under the provisions of this subpart shall be only
high-efficiency (HEPA) as described in §84.1130(a)(4) and will carry a 42 CFR part 84 approval label.
In addition, changes or modifications of powered HEPA air-purifying respirators approved under the
provisions of this subpart KK will be approved under this subpart and will have a 42 CFR part 84
approval label.
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§84.1101 Definitions.
As used in this subpart
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(a) Air Contamination Level means the standards of contaminant levels prescribed by the
Secretary of Labor in accordance with the provisions of the Occupational Safety and Health Act of
1970 (Pub. L. 91-596; 84 Stat. 1590).
(b) DOP means a homogenous liquid aerosol, having a particle diameter of 0.3 micrometer, which
is generated by vaporization and condensation of dioctyl phthalate.
(c) Pesticide means:
(1) Any substance or mixture of substances (including solvents and impurities) intended to
prevent, destroy, repel, or mitigate any insect, rodent, nematode, fungus, weed, or other form of plant
or animal life or virus; and
(2) Any substance or mixture of substances (including solvents and impurities) intended for use as
a plant regulator, defoliant, or desiccant, as defined in the Federal Insecticide, Fungicide, and
Rodenticide Act of 1947, as amended (7 U.S.C. 135-135k), excluding fumigants which are applied as
gases or vapors or in a solid or liquid form as pellets or poured liquids for subsequent release as
gases or vapors.
(d) Radionuclide means an atom identified by the constitution of its nucleus (specified by the
number of protons Z, number of neutrons N, and energy, or, alternatively, by the atomic number Z,
mass number A=(N+Z), and atomic mass) which exists for a measurable time; decays or disintegrates
spontaneously, emits radiation, and results in the formation of new nuclides.
(e) Smoke means the products of incomplete combustion of organic substances in the form of
solid and liquid particles and gaseous products in air, usually of sufficient concentration to
perceptibility obscure vision.
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§84.1102 Examination, inspection and testing of complete respirator assemblies; fees.
The following fees shall be charged by the Institute for the examination, inspection and testing of
complete respirator assemblies approved under this subpart:
(a) Gas masks with particulate filter, including pesticide gas masks—
(1) Single hazard—$1,100.
(2) Type N—$4,100.
(b) Dust, fume and mist respirators—
(1) Single particulate hazard having an Air Contamination Level more than 0.05 mg./m.3 or 2
million particles per cubic foot—$500.
(2) Combination particulate hazards having an Air Contamination Level more than 0.05 mg./m.3 or
2 million particles per cubic foot—$750.
(3) Particulate hazards having an Air Contamination Level less than 0.05 mg./m.3 or 2 million
particles per cubic foot, radon daughters—$1,250.
(4) All dusts, fumes and mists—$2,000.
(c) Paint spray respirators—$1,600.
(d) Pesticide respirators—$1,600.
(e) Chemical cartridge respirators with particulate filter—$1,150.
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§84.1103 Approval labels and markings; approval of contents; use.
(a) Full-scale reproductions of approval labels and markings, and a sketch or description of the
method of application and position on the harness, container, canister, cartridge, filter, or other
component, together with instructions for the use and maintenance of the respirator shall be submitted
to MSHA and the Institute for approval.
(b) Approval labels for non-powered and powered air-purifying dust, fume, mist respirators
approved prior to July 10, 1995 under the provisions of subpart K of 30 CFR part 11 (See 30 CFR Part
11 edition, revised as of July 1, 1994.) shall bear the emblem of the Mine Safety and Health
Administration and the seal of the Department of Health and Human Services, the applicant's name
and address, an approval number assigned by the Institute, a statement that the respirator was tested
and approved under subpart K of 30 CFR part 11 and, where appropriate, restrictions or limitations
placed upon the use of the respirator by the Institute. The approval number assigned by the Institute
shall be designated by the prefix TC and a serial number.
(c) Approval labels for powered air-purifying respirators approved under the provisions of this
subpart shall bear the emblem of the National Institute for Occupational Safety and Health and the
seal of the Department of Health and Human Services, the applicant's name and address, an approval
number assigned by the Institute, a statement stating the respirator was tested under the provisions of
this subpart, and, where appropriate, restrictions or limitations placed upon the use of the respirator by
the Institute. The approval number assigned by the Institute shall be designated by the prefix TC and a
serial number.
(c) The Institute shall, where necessary, notify the applicant when additional labels, markings, or
instructions will be required.
(d) Approval labels and markings shall only be used by the applicant to whom they were issued.
(e) Legible reproductions or abbreviated forms of the label approved by the Institute for use on
each respirator shall be attached to or printed at the following locations:
Respirator type
Label type
Location
Gas mask with a particulate filter, including Entire
Mask and container.
pesticide gas mask
Dust, fume, and mist respirators
Entire
Respirator container and filter container.
Abbreviated Filters.
Entire
Respirator container, cartridge container,
Chemical-cartridge respirator with a
and filter containers (where applicable).
particulate filter, including paint spray
respirator
Abbreviated Cartridges and filters and filter containers.
Pesticide respirator
Entire
Respirator container, and cartridge and
filter containers.
Abbreviated Cartridges and filters.
(f) The use of any MSHA and Institute approval label obligates the applicant to whom it is issued
to maintain or cause to be maintained the approved quality control sampling schedule and the
acceptable quality level for each characteristic tested, and to assure that it is manufactured according
to the drawings and specifications upon which the certificate of approval is based.
(g) Each respirator, respirator component, and respirator container shall, as required by the
Institute to assure quality control and proper use of the respirator, be labeled distinctly to show the
name of the applicant, and the name and letters or numbers by which the respirator or respirator
component is designated for trade purposes, and the lot number, serial number, or approximate date
of manufacture.
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EDITORIAL NOTE: At 60 FR 30388, June 8, 1995, §84.1103 was added with two paragraph (c) designations.
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§84.1130 Respirators; description.
(a) Dust, fume, and mist respirators, including all completely assembled respirators designed for
use as respiratory protection during entry into and escape from atmospheres which contain adequate
oxygen to support life and hazardous particulates, are described as follows:
(1) Air-purifying respirators, either with replaceable or reusable filters, designed as respiratory
protection against dusts:
(i) Having an air contamination level not less than 0.05 milligram per cubic meter of air, including
but not limited to coal, arsenic, cadmium, chromium, lead, and manganese; or
(ii) Having an air contamination level not less than 2 million particles per cubic foot of air, including
but not limited to aluminum, flour, iron ore, and free silica, resulting principally from the disintegration
of a solid, e.g., dust clouds produced in mining, quarrying, and tunneling, and in dusts produced during
industrial operations, such as grinding, crushing, and the general processing of minerals and other
materials.
(2) Air-purifying respirators, with replaceable filters, designed as respiratory protection against
fumes of various metals having an air contamination level not less than 0.05 milligram per cubic meter,
including but not limited to aluminum, antimony, arsenic, cadmium, chromium, copper, iron, lead,
magnesium, manganese, mercury (except mercury vapor), and zinc, which result from the sublimation
or condensation of their respective vapors, or from the chemical reaction between their respective
vapors and gases.
(3) Air-purifying respirators, with replaceable filters, designed as respiratory protection against
mists of materials having an air contamination level not less than 0.05 milligram per cubic meter or 2
million particles per cubic foot, e.g., mists produced by spray coating with vitreous enamels, chromic
acid mist produced during chromium plating, and other mists of materials whose liquid vehicle does
not produce harmful gases or vapors.
(4) Air-purifying respirators, with replaceable filters, designed as respiratory protection against
dusts, fumes, and mists having an air contamination level less than 0.05 milligram per cubic meter,
including but not limited to lithium hydride and beryllium, and against radionuclides.
(5) Air-purifying respirators, with replaceable filters, designed as respiratory protection against
radon daughters, and radon daughters attached to dusts, fumes, and mists.
(6) Air-purifying respirators, with replaceable filters, designed as respiratory protection against
asbestos-containing dusts and mists.
(7) Air-purifying respirators, with replaceable filters, designed as protection against various
combinations of particulate matter.
(8) Air-purifying dust respirators designed as respiratory protection against pneumoconiosis- and
fibrosis-producing dusts, or dusts and mists, including but not limited to aluminum, asbestos, coal,
flour, iron ore, and free silica.
(b) Gas masks containing filters for protection against dusts, fumes, mists, and smokes in
combination with gases, vapors, or gases and vapors. These respirators are not for use against gases
or vapors with poor warning properties (except where MSHA or Occupational Safety and Health
Administration standards may permit such use for a specific gas or vapor) or those which generate
high heats of reaction with sorbent material in the canister.
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(c) Pesticide respirators, including all completely assembled respirators which are designed for
use as respiratory protection during entry into and escape from atmospheres which contain pesticide
hazards, are described according to their construction as follows:
(1) Front-mounted or back-mounted gas masks;
(2) Chin-style gas mask;
(3) Chemical cartridge;
(4) Air-purifying respirator with attached blower; and,
(5) Other devices, including combination respirators.
(d) Respirators with cartridges containing or having attached to them, filters for protection against
mists of paints, lacquers, and enamels. These respirators are not for use against gases or vapors with
poor warning properties (except where MSHA or Occupational Safety and Health Administration
standards may permit such use for a specific gas or vapor) or those which generate high heats of
reaction with sorbent material in the cartridge.
(e) Respirators with cartridges containing or having attached to them filters for protection against
dusts, fumes, and mists, except the mists of paints, lacquers, and enamels. These respirators are not
for use against gases or vapors with poor warning properties (except where MSHA or Occupational
Safety and Health Administration standards may permit such use for a specific gas or vapor) or those
which generate high heats of reaction with sorbent material in the cartridge.
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§84.1131 Respirators; required components.
(a) Each respirator described in §84.1130 shall, where its design requires, contain the following
component parts:
(1) Facepiece, mouthpiece with noseclip, hood, or helmet;
(2) Filter unit, canister with filter, or cartridge with filter;
(3) Harness;
(4) Attached blower; and
(5) Breathing tube.
(b) The components of each respirator shall meet the minimum construction requirements set
forth in Subpart G of this part.
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§84.1132 Breathing tubes; minimum requirements.
(a) Flexible breathing tubes used in conjunction with respirators shall be designed and
constructed to prevent:
(1) Restriction of free head movement;
(2) Disturbance of the fit of facepieces, mouthpieces, hoods, or helmets;
(3) Interference with the wearer's activities; and
(4) Shutoff of airflow due to kinking, or from chin or arm pressure.
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§84.1133 Harnesses; installation and construction; minimum requirements.
(a) Each respirator shall, where necessary, be equipped with a suitable harness designed and
constructed to hold the components of the respirator in position against the wearer's body.
(b) Harnesses shall be designed and constructed to permit easy removal and replacement of
respirator parts, and, where applicable, provide for holding a full facepiece in the ready position when
not in use.
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§84.1134 Respirator containers; minimum requirements.
(a) Except as provided in paragraph (b) of this section each respirator shall be equipped with a
substantial, durable container bearing markings which show the applicant's name, the type of
respirator it contains, and all appropriate approval labels. Except for dust, fume, and mist respirators,
the commercial designation of the respirator it contains shall be shown.
(b) Containers for single-use respirators may provide for storage of more than one respirator,
however, such containers shall be designed and constructed to prevent contamination of respirators
which are not removed, and to prevent damage to respirators during transit.
(c) Containers for gas masks combinations shall be designed and constructed to permit easy
removal of the mask.
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§84.1135 Half-mask facepieces, full facepieces, hoods, helmets, and mouthpieces; fit;
minimum requirements.
(a) Half-mask facepieces and full facepieces shall be designed and constructed to fit persons with
various facial shapes and sizes either:
(1) By providing more than one facepiece size; or
(2) By providing one facepiece size which will fit varying facial shapes and sizes.
(b) Full facepieces shall provide for optional use of corrective spectacles or lenses, which shall not
reduce the respiratory protective qualities of the respirator.
(c) Hoods and helmets shall be designed and constructed to fit persons with various head sizes,
provide for the optional use of corrective spectacles or lenses, and insure against any restriction of
movement by the wearer.
(d) Mouthpieces shall be equipped with noseclips which are securely attached to the mouthpiece
or respirator and provide an airtight seal.
(e) Facepieces, hoods, and helmets shall be designed to prevent eyepiece fogging.
(f) Half-mask facepieces shall not interfere with the fit of common industrial safety corrective
spectacles, as determined by the Institute's facepiece tests in §§84.1141, 84.1142, and 84.1156(b).
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§84.1136 Facepieces, hoods, and helmets; eyepieces; minimum requirements.
(a) Facepieces, hoods, and helmets shall be designed and constructed to provide adequate vision
which is not distorted by the eyepieces.
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(b) All eyepieces of gas masks combinations shall be designed and constructed to be impact and
penetration resistant. Federal Specification, Mask, Air Line: and Respirator, Air Filtering, Industrial,
GGG-M-125d, October 11, 1965, with interim amendment-1, July 30, 1969, is an example of an
appropriate standard for determining impact and penetration resistance. Copies of GGG-M-125d may
be obtained from the NIOSH, Certification and Quality Assurance Branch, 1095 Willowdale Road,
Morgantown, WV 26505-2888.
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§84.1137 Inhalation and exhalation valves; minimum requirements.
(a) Inhalation and exhalation valves shall be protected against distortion.
(b) Inhalation valves shall be designed and constructed and provided where necessary to prevent
excessive exhaled air from adversely affecting filters, cartridges, and canisters, except where filters of
dust, fume, and mist respirators are specifically designed to resist moisture as prescribed in §84.1145.
(c) Exhalation valves shall be:
(1) Provided where necessary;
(2) Protected against damage and external influence; and
(3) Designed and constructed to prevent inward leakage of contaminated air.
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§84.1138 Head harnesses; minimum requirements.
(a) All facepieces shall be equipped with head harnesses designed and constructed to provide
adequate tension during use and an even distribution of pressure over the entire area in contact with
the face.
(b) Facepiece head harnesses, except those employed on single-use dust, fume, and mist
respirators, shall be adjustable and replaceable.
(c) Mouthpieces shall be equipped, where applicable, with adjustable and replaceable harnesses,
designed and constructed to hold the mouthpiece in place.
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§84.1139 Air velocity and noise levels; hoods and helmets; minimum requirements.
Noise levels generated by the respirator will be measured inside the hood or helmet at maximum
airflow obtainable and shall not exceed 80 dBA.
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§84.1140 Dust, fume, and mist respirators; performance requirements; general.
Dust, fume, and mist respirators and the individual components of each such device shall, as
appropriate, meet the requirements for performance and protection specified in the tests described in
§§84.1141 through 84.1152 and prescribed in Tables 12 and 13.
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§84.1141 Isoamyl acetate tightness test; dust, fume, and mist respirators designed for
respiratory protection against fumes of various metals having an air contamination level not
less than 0.05 milligram per cubic meter; minimum requirements.
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(a) The respirator will be modified in such a manner that all of the air that normally would be
inhaled through the inhalation port(s) is drawn through an efficient activated charcoal-filled canister, or
cartridge(s), without interference with the face-contacting portion of the facepiece.
(b) The modified respirator will be worn by persons for at least 2 minutes each in a test chamber
containing 100 parts (by volume) of isoamyl-acetate vapor per million parts of air.
(c) The odor of isoamyl-acetate shall not be detected by the wearers of the modified respirator
while in the test atmosphere.
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§84.1142 Isoamyl acetate tightness test; respirators designed for respiratory protection
against dusts, fumes, and mists having an air contamination level less than 0.05 milligram per
cubic meter, or against radionuclides; minimum requirements.
(a) The applicant shall provide a charcoal-filled canister or cartridge of a size and resistance
similar to the filter unit with connectors which can be attached to the facepiece in the same manner as
the filter unit.
(b)(1) The canister or cartridge will be used in place of the filter unit, and persons will each wear a
modified half-mask facepiece for 5 minutes in a test chamber containing 100 parts (by volume) of
isoamyl-acetate vapor per million parts of air.
(2) The following work schedule will be performed by each wearer in the test chamber:
(i) Two minutes walking, nodding, and shaking head in normal movements; and
(ii) Three minutes exercising and running in place.
(3) The facepiece shall be capable of adjustment, according to the applicant's instructions, to each
wearer's face, and the odor of isoamyl-acetate shall not be detectable by any wearer during the test.
(c) Where the respirator is equipped with a full facepiece, hood, helmet, or mouthpiece, the
canister or cartridge will be used in place of the filter unit, and persons will each wear the modified
respiratory-inlet covering for 5 minutes in a test chamber containing 1,000 parts (by volume) of
isoamyl-acetate vapor per million parts of air, performing the work schedule specified in paragraph (b)
(2) of this section.
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§84.1143 Dust, fume, and mist air-purifying filter tests; performance requirements; general.
Dust, fume, and mist respirators will be tested in accordance with the schedule set forth in Table
13 of this subpart to determine their effectiveness as protection against the particulate hazards
specified in Table 13.
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§84.1144 Silica dust test for dust, fume, and mist respirators; single-use or reusable filters;
minimum requirements.
(a) Three non-powered respirators with single-use filters will be tested for periods of 90 minutes
each at a continuous airflow rate of 32 liters per minute.
(b) The relative humidity in the test chamber will be 20-80 percent, and the room temperature
approximately 25 °C.
(c) The test suspension in the chamber will not be less than 50 nor more than 60 milligrams of flint
(99+ percent free silica) per cubic meter of air.
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(d) The flint in suspension will be ground to pass 99+ percent through a 270-mesh sieve.
(e) The particle-size distribution of the test suspension will have a geometric mean of 0.4 to 0.6
micrometer, and the standard geometric deviation will not exceed 2.
(f) The total amount of unretained test suspension in samples taken during testing shall not
exceed 1.5 milligrams for a non-powered air-purifying respirator.
(g) Three non-powered respirators with reusable filters will be tested and shall meet the
requirements specified in paragraphs (a) through (f) of this section; each filter shall be tested three
times: Once as received; once after cleaning; and once after recleaning. The applicant's instructions
shall be followed for each cleaning.
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§84.1145 Silica dust test; non-powered single-use dust respirators; minimum requirements.
(a) Three respirators will be tested.
(b) As described in §84.1144, airflow will be cycled through the respirator by a breathing machine
at the rate of 24 respirations per minute with a minute volume of 40 liters; a breathing machine cam
with a work rate of 622 kg.-m.2/minute shall be used.
(c) Air exhaled through the respirator will be 35° ±2 °C. with 94 ±3 percent relative humidity. #
(d) Air inhaled through the respirator will be sampled and analyzed for respirator leakage.
(e) The total amount of unretained test suspension, after drying, in samples taken during testing,
shall not exceed 1.8 milligrams for any single test.
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§84.1146 Lead fume test for dust, fume, and mist respirators; minimum requirements.
(a) Three non-powered respirators will be tested for a period of 312 minutes each at a continuous
airflow rate of 32 liters per minute.
(b) The relative humidity in the test chamber will be 20-80 percent, and the room temperature
approximately 25 °C.
(c) The test suspension in the test chamber will not be less than 15 nor more than 20 milligrams of
freshly generated lead-oxide fume, calculated as lead (Pb), per cubic meter of air.
(d) The fume will be generated by impinging an oxygen-gas flame on molten lead.
(e) Samples of the test suspension will be taken during each test period for analysis.
(f) The total amount of unretained test suspension in the samples taken during testing, which is
analyzed and calculated as lead (Pb), shall not exceed 1.5 milligrams of lead for a non-powered airpurifying respirator.
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§84.1147 Silica mist test for dust, fume, and mist respirators; minimum requirements.
(a) Three non-powered respirators will be tested for a period of 312 minutes each at a continuous
airflow rate of 32 liters per minute.
(b) The room temperature in the test chamber will be approximately 25 °C.
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(c) The test suspension in the test chamber will not be less than 20 nor more than 25 milligrams of
silica mist, weighed as silica dust, per cubic meter of air.
(d) Mist will be produced by spraying an aqueous suspension of flint (99+ percent free silica), and
the flint shall be ground to pass 99+ percent through a 270-mesh sieve.
(e) Samples of the test suspension will be taken during each test period for analysis.
(f) The total amount of silica mist unretained in the samples taken during testing, weighed as silica
dust, shall not exceed 2.5 milligrams for a non-powered air-purifying respirator.
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§84.1148 Tests for respirators designed for respiratory protection against more than one type
of dispersoid; minimum requirements.
Respirators designed as respiratory protection against more than one particulate hazard (dust,
fume, or mist) shall comply with all the requirements of this part, with respect to each of the specific
hazards involved.
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§84.1149 Airflow resistance tests; all dust, fume, and mist respirators; minimum requirements.
(a) Resistance to airflow will be measured in the facepiece, mouthpiece, hood, or helmet of a
dust, fume, or mist respirator mounted on a test fixture with air flowing at a continuous rate of 85 liters
per minute, both before and after each test conducted in accordance with §§84.1144 through 84.1147.
(b) The maximum allowable resistance requirements for dust, fume, and mist respirators are as
follows:
MAXIMUM RESISTANCE
[mm. water-column height]
Type of respirator
Pneumoconiosis- and fibrosis-producing dusts, or dusts
and mists
Dust, fume, and mist, with single-use filter
Dust, fume, and mist, with reusable filter
Radon daughter
Initial
inhalation
Asbestos dust and mist
12
30
20
18
18
Final
inhalation Exhalation
15
15
50
40
1
25
25
20
20
15
15
1
Measured after silica dust test described in §84.1144.
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§84.1150 Exhalation valve leakage test; minimum requirements.
(a) Dry exhalation valves and valve seats will be subjected to a suction of 25 mm. water-column
height while in a normal operating position.
(b) Leakage between the valve and valve seat shall not exceed 30 milliliters per minute.
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§84.1151 DOP filter test; respirators designed as respiratory protection against dusts, fumes,
and mists having an air contamination level less than 0.05 milligram per cubic meter and
against radionuclides; minimum requirements.
(a) All single air-purifying respirator filter units will be tested in an atmosphere concentration of
100 micrograms of DOP per liter of air at continuous flow rates of 32 and 85 liters per minute for a
period of 5 to 10 seconds.
(b) Where filters are to be used in pairs, the flow rates will be 16 and 42.5 liters per minute,
respectively, through each filter.
(c) The filter will be mounted on a connector in the same manner as used on the respirator, and
the total leakage for the connector and filter shall not exceed 0.03 percent of the ambient DOP
concentration at either flow rate.
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§84.1152 Silica dust loading test; respirators designed as protection against dusts, fumes,
and mists having an air contamination level less than 0.05 milligram per cubic meter and
against radionuclides; minimum requirements.
(a) Three non-powered respirators will be tested in accordance with the provisions of §84.1144, or
equivalent, and shall meet the minimum requirements of §§84.1144 and 84.1149.
(b) Three powered air-purifying respirators will be tested in accordance with the provisions of
§84.1144 except they will be tested for a period of 4 hours each at a flowrate not less than 115 liters
per minute to tight-fitting facepieces, and not less than 170 liters per minute to loose-fitting hoods and
helmets. The total amount of unretained test suspension in samples taken during testing shall not
exceed 14.4 milligrams for a powered air-purifying respirator with tight-fitting facepiece, and 21.3
milligrams for a powered air-purifying respirator with loose-fitting hood or helmet. They shall meet the
minimum requirements of §84.1149.
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§84.1153 Dust, fume, mist, and smoke tests; canister bench tests; gas masks canisters
containing filters; minimum requirements.
(a) Gas mask canisters containing filters for protection against dusts, fumes, mists, and smokes in
combination with gases, vapors, or gases and vapors, will be tested as prescribed in §84.1140 except
for the breathing resistance which will be in accordance with §84.122.
(b) Gas mask canisters designed for protection against smokes will be tested in an atmospheric
concentration of 100 micrograms of dioctyl phthalate per liter of air at continuous flow rates of 32 liters
per minute and 85 liters per minute for a period of 5 to 10 seconds, and the DOP leakage through the
canister shall not exceed 0.03 percent of the test concentration.
(c) Gas mask canisters containing filters for protection against dusts, fumes, mists, and smokes in
combination with gases, vapors, or gases and vapors, will be tested as prescribed in §84.126.
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§84.1154 Canister and cartridge requirements.
(a) Where two or more canisters or cartridges are used in parallel, their resistance to airflow shall
be essentially equal.
(b) The color and markings of all canisters and cartridges or labels shall conform with the
requirements of the American National Standards Institute, American National Standard for
Identification of Air-Purifying Respirator Canisters and Cartridges, ANSI K13.1-1973. ANSI K13.1 is
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incorporated by reference and has been approved by the Director of the Federal Register in
accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be obtained from American National
Standards Institute, Inc., 1430 Broadway, New York, NY 10018. Copies may be inspected at the
NIOSH, Certification and Quality Assurance Branch, 1095 Willowdale Road, Morgantown, WV 265052888, or at the National Archives and Records Administration (NARA). For information on the
availability of this material at NARA, call 202-741-6030 , or go to:
http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.
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§84.1155 Filters used with canisters and cartridges; location; replacement.
(a) Particulate matter filters used in conjunction with a canister or cartridge shall be located on the
inlet side of the canister or cartridge.
(b) Filters shall be incorporated into or firmly attached to the canister or cartridge and each filter
assembly shall, where applicable, be designed to permit its easy removal from and replacement on the
canister or cartridge.
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§84.1156 Pesticide respirators; performance requirements; general.
Pesticide respirators and the individual components of each such device shall, as appropriate,
meet the following minimum requirements for performance and protection:
(a) Breathing resistance test. (1) Airflow resistance will be measured in the facepiece,
mouthpiece, hood, or helmet of a pesticide respirator mounted on a test fixture with air flowing at a
continuous rate of 85 liters per minute, both before and after each test conducted in accordance with
paragraphs (c) and (f) of this section.
(2) The maximum allowable resistance requirements for pesticide respirators are as follows:
MAXIMUM RESISTANCE
[mm. water-column height]
Inhalation
Type of pesticide respirator
Front- or back-mounted gas mask
Chin-style gas mask
Powered air-purifying2
Chemical Cartridge
Initial
70
65
Final1
85
80
2
50
50
Exhalation
20
20
20
2
70
70
20
1
Measured at end of the service life specified in Table 14 of this subpart.
2
Resistance of filter(s), cartridge(s), and breathing tube(s) only with blower not operating.
(b) Facepiece test. (1) The complete pesticide respirator will be fitted to the faces of persons
having varying facial shapes and sizes.
(2) Where the applicant specifies a facepiece size or sizes for his respirator together with the
approximate measurements of faces they are designed to fit, the Institute will provide test subjects to
suit such facial measurements.
(3) Any pesticide respirator part which must be removed to perform the facepiece fit test shall be
replaceable without special tools and without disturbing facepiece fit.
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(4) The facepiece or mouthpiece fit test using positive or negative pressure recommended by the
applicant and described in his instructions will be used during each test.
(5)(i) Each wearer will enter a chamber containing 1,000 p.p.m. isoamyl-acetate vapor for a
respirator equipped with a full facepiece, mouthpiece, hood, or helmet and 100 p.p.m. isoamyl-acetate
vapor for a respirator equipped with a half-mask facepiece.
(ii) The facepiece, mouthpiece, hood, or helmet may be adjusted, if necessary, in the test
chamber before starting the test.
(iii) Each wearer will remain in the chamber while performing the following activities:
(A) Two minutes, nodding and turning head;
(B) Two minutes, calisthenic arm movements;
(C) Two minutes, running in place; and
(D) Two minutes, pumping with a tire pump into a 28-liter (1 cubic foot) container.
(iv) Each wearer shall not detect the odor of isoamyl-acetate during the test.
(c) Silica dust test. Three completely assembled pesticide respirators will be tested with a
mechanical-testing apparatus as follows:
(1) Temperature in the test chamber will be approximately 25 °C.
(2) Continuous airflow through the respirator will be 32 liters per minute for front-mounted, backmounted, and chin-style gas mask pesticide respirators and chemical cartridge pesticide respirators,
and not less than 115 (4 cubic feet) liters per minute to tight-fitting facepieces and 170 liters (6 cubic
feet) per minute to loose-fitting hoods and helmets of powered air-purifying respirators.
(3) The test aerosol will contain 50-60 milligrams of 99+ percent free silica per cubic meter of air.
(4) The particle size distribution of the test suspension will have a geometric mean diameter of 0.4
to 0.6 micrometer, with a standard geometric deviation less than 2.
(5) Front-mounted, back-mounted, and chin-style gas mask pesticide respirators and chemical
cartridge pesticide respirators will be tested for 90 minutes and powered air-purifying respirators will
be tested for 4 hours.
(d) Lead fume test. Three completely assembled pesticide respirators will be tested with a
mechanical-testing apparatus as follows:
(1) Continuous airflow through the respirator will be 32 liters per minute for front-mounted, backmounted, and chin-style gas mask pesticide respirators and chemical cartridge pesticide respirators
and not less than 115 liters (4 cubic feet) per minute, for powered air-purifying respirators with tightfitting facepieces, and not less than 170 liters (6 cubic feet) per minute for powered air-purifying
respirators with loose-fitting hoods and helmets.
(2) The test aerosol will contain 15-20 milligrams of freshly generated lead-oxide fume, calculated
as lead, per cubic meter of air.
(3) The fume will be generated by impinging an oxygen-gas flame on molten lead.
(4) Front-mounted, back-mounted, and chin-style gas mask pesticide respirators and chemical
cartridge pesticide respirators will be tested for 90 minutes and powered air-purifying pesticide
respirators will be tested for 4 hours.
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(5) The total amount of unretained test suspension, which is analyzed and calculated as lead,
shall not exceed:
(i) 0.43 milligram for any 90-minute test;
(ii) 4.8 milligrams for any 4-hour test made at 115 liters (4 cubic feet) per minute; or
(iii) 6.2 milligrams for any 4-hour test made at 170 liters (6 cubic feet) per minute.
(e) Dioctyl-phthalate test. (1) All canisters submitted for use with front-mounted and back-mounted
gas mask pesticide respirators will be tested in an atmospheric concentration of 100 micrograms of
dioctyl-phthalate per liter of air at continuous flow rates of 32 and 85 liters per minute for a test period
of 5 to 10 seconds.
(2) The DOP leakage through the canister shall not exceed 0.03 percent of the ambient DOP
concentration.
(f) Bench tests for pesticide respirators. (1)(i) Bench tests will be made on an apparatus that
allows the test atmosphere at 50 ±5 percent relative humidity and at room temperature (25°±2.5 °C.) to
enter the canister or cartridge at predetermined concentrations and rates of flow, and that has a
means for determining the test life of the canister or cartridge against carbon tetrachloride.
(ii) Canisters and cartridges will be tested as they are used on each pesticide respirator, either
singly or in pairs.
(iii) Three canisters or cartridges or pairs of cartridges will be removed from containers and tested
as received from the applicant.
(iv) Two canisters, cartridges, or pairs of cartridges will be equilibrated at room temperature by
passing 25 percent relative humidity air through them at the following flow rates (expressed as liters
per minute (l.p.m.)) for 6 hours:
Type of canister or cartridge
Airflow rate,
l.p.m.
Air-purifying canister
Air-purifying cartridge
Powered air-purifying with tight-fitting facepiece
Powered air-purifying with loose-fitting hood or helmet
64
25
115
170
(v) Two canisters, cartridges, or pairs of cartridges will be equilibrated at room temperature by
passing 85 percent relative humidity air through them at the flow rates stated in paragraph (f)(1)(iv) of
this section for 6 hours.
(vi) The equilibrated canisters or cartridges will be resealed, kept in an upright position at room
temperature, and tested within 18 hours.
(2) Canisters and cartridges tested in accordance with the provisions of this section shall meet the
requirements specified in Table 14 of this subpart.
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§84.1157 Chemical cartridge respirators with particulate filters; performance requirements;
general.
Chemical cartridge respirators with particulate filters and the individual components of each such
device shall, as appropriate, meet the following minimum requirements for performance and
protection:
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(a) Breathing resistance test. (1) Resistance to airflow will be measured in the facepiece,
mouthpiece, hood, or helmet of a chemical cartridge respirator mounted on a test fixture with air
flowing at a continuous rate of 85 liters per minute, both before and after each test conducted in
accordance with paragraphs (d) through (f) of this section.
(2) The maximum allowable resistance requirements for chemical cartridge respirators are as
follows:
MAXIMUM RESISTANCE
[mm. water-column height]
Inhalation
Type of chemical cartridge respirator
Initial Final1 Exhalation
For gases, vapors, or gases and vapors, and dusts, fumes, and mists
50
70
20
For gases, vapors, or gases and vapors, and mists of paints, lacquers, and
50
70
20
enamels
1
Measured at end of service life specified in Table 11 in subpart L of this part.
(b) Facepiece test. The facepiece test will be conducted as specified in §84.205.
(c) Lacquer and enamel mist tests; general. (1) Three respirators with cartridges containing or
having attached to them, filters for protection against mists of paints, lacquers, and enamels shall be
tested in accordance with the provisions of paragraph (f) of this section.
(2) In addition to the test requirements set forth in paragraph (c)(1) of this section, three such
respirators will be tested against each aerosol in accordance with the provisions of paragraphs (d) and
(e) of this section.
(d) Lacquer mist test. (1) Temperature in the test chamber will be approximately 25 °C.
(2) Continuous airflow through the respirator will be 32 liters per minute for air-purifying
respirators, and not less than 115 liters per minute to tight fitting facepieces and 170 liters per minute
to loose-fitting hoods and helmets of powered air-purifying respirators.
(3) Airflow through the chamber will be 20-25 air changes per minute.
(4) The atomizer employed will be a No. 64-5 nozzle with setup 3, or equivalent, operating at 69
kN/m.2 (10 pounds per square inch gage).
(5) The test aerosol will be prepared by atomizing a mixture of one volume of clear cellulose
nitrate lacquer and one volume of lacquer thinner. The lacquer described in Federal Specification TTL-31, October 7, 1953, is an example of an acceptable lacquer. Copies of TT-L-31 may be inspected
or obtained from the NIOSH, Certification and Quality Assurance Branch, 1095 Willowdale Road,
Morgantown, WV 26505-2888.
(6) The concentration of cellulose nitrate in the test aerosol will be 95-125 milligrams per cubic
meter.
(7) The test aerosol will be drawn to each respirator for a total of 156 minutes for air-purifying
respirators and 240 minutes for powered air-purifying respirators.
(8) The total amount of unretained mist in the samples taken during testing, weighed as cellulose
nitrate, shall not exceed 5 milligrams for an air-purifying respirator, 28 milligrams for a powered airpurifying respirator with tight-fitting facepiece, and 41 milligrams for a powered air-purifying respirator
with loose-fitting hood or helmet.
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(e) Enamel mist test. (1) Temperature in the test chamber will be approximately 25 °C.
(2) Continuous airflow through the respirator will be 32 liters per minute for air-purifying
respirators, and not less than 115 liters per minute to tight-fitting facepieces and 170 liters per minute
to loose-fitting hoods and helmets of powered air-purifying respirators.
(3) Airflow through the chamber will be 20-25 air changes per minute.
(4) The atomizer employed will be a No. 64 nozzle with setup 1A, or equivalent, operating at 69
kN/m.2 (10 pounds per square inch gage).
(5) The test aerosol will be prepared by atomizing a mixture of 1 volume of white enamel and 1
volume of turpentine. The enamel described in Federal Specification TT-E-489b, May 12, 1953, with
amendment-1 of 9 November 1955 is an example of an acceptable enamel. Copies of TT-E-489b may
be inspected or obtained from the NIOSH, Certification and Quality Assurance Branch, 1095
Willowdale Road, Morgantown, WV 26505-2888.
(6) The concentration of pigment in the test aerosol, weighed as ash, will be 95-125 milligrams per
cubic meter.
(7) The test aerosol will be drawn to each respirator for a total of 156 minutes for air-purifying
respirators and 240 minutes for power air-purifying respirators.
(8) The total amount of unretained mist in the samples taken during testing, weighed as ash, shall
not exceed 1.5 milligrams for any air-purifying respirator, 8.3 milligrams for a powered air-purifying
respirator with tight-fitting facepiece, and 12.3 milligrams for a powered air-purifying respirator with
loose-fitting hood or helmet.
(f) Bench tests; gas and vapor tests. (1) Bench tests will be made in accordance with §84.207 and
tested cartridges shall meet the minimum requirements set forth in Table 11 of subpart L of this part.
Cartridges will be equilibrated in accordance with paragraph (f)(2) of this section.
(2)(i) Two powered air-purifying cartridges or pairs of cartridges will be equilibrated at room
temperature by passing 25 percent relative humidity air through them at the following flow rates
(expressed in liters per minute (l.p.m.)) for 6 hours:
Type of cartridge
Powered air purifying with tight-fitting facepiece
Powered air purifying with loose-fitting hood or helmet
Airflow rate,
l.p.m.
115
170
(ii) Two powered air-purifying cartridges or pairs of cartridges will be equilibrated by passing 85
percent relative humidity air through them at the flow rates stated in paragraph (f)(2)(i) of this section.
(iii) All cartridges will be resealed, kept in an upright position, at room temperatures, and tested
within 18 hours.
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§84.1158 Dust, fume, and mist tests; respirators with filters; minimum requirements; general.
(a) Three respirators with cartridges containing, or having attached to them, filters for protection
against dusts, fumes, and mists, except the mists of paints, lacquers, and enamels, will be tested in
accordance with the provisions of §84.1157(f).
(b) In addition to the test requirements set forth in paragraph (a) of this section, three such
respirators will be tested, as appropriate, in accordance with the provisions of §§84.1141 through
84.1152; however, the maximum allowable resistance of complete dust, fume, and mist, and gas,
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vapor, or gas and vapor chemical cartridge respirators shall not exceed the maximum allowable limits
set forth in §84.1157(a)(2).
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Tables to Subpart KK of Part 84
TABLE 12—FACEPIECE TEST REQUIREMENTS
[42 CFR Part 84, Subpart KK]
Respirator types
Dusts: Air Contamination Level not less than 0.05 mg/M3 or 2
mppcf
Pressure
tightness test1
X
Fumes: Air Contamination Level not less than 0.05 mg/M3
X
Mists: Air Contamination Level not less than 0.05 mg/M3 or 2
mppcf
Dusts, Fumes, and Mists: Air Contamination Level less than
0.05 mg/M3 or 2 mppcf, and radionuclides
Radon daughters
Asbestos-containing dusts and mists
X
Isoamyl acetate
test
84.1141 84.1142
X
X
X
X
X
X
1
Test is required only where applicable.
TABLE 13—AIR-PURIFYING AND POWERED AIR-PURIFYING RESPIRATOR FILTER TESTS REQUIRED
FOR APPROVAL
[42 CFR Part 84, Subpart KK]
Lead fume Silica mist
test
DOP test
test
84.1144 84.1145 84.1152 84.1146
84.1147
84.1151
X
Silica dust tests
Respirator types
Dusts: Air Contamination Level not
less than 0.05 mg/M3 or 2 mppcf
Fumes: Air Contamination Level not
less than 0.05 mg/M3
Mists: Air Contamination Level not
less than 0.05 mg/M3 or 2 mppcf
Dusts, Fumes, and Mists: Air
Contamination Level less than 0.05
mg/M3 or 2 mppcf, and radionuclides
Radon daughters
Asbestos-containing dusts and mists
Single use dust and mist respirators
X
X
X
X
1
2
2
3
X
X
X
X
3
X
3
X
1
For resistance only.
2
For penetration only.
3
Test required only where applicable.
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TABLE 14—CARBON TETRACHLORIDE BENCH TESTS AND REQUIREMENTS FOR CANISTERS AND
CARTRIDGES
[42 CFR part 84, Subpart KK]
Type of pesticide respirator
Chest-mounted or back-mounted gas
mask (as received)
Chest-mounted or back-mounted gas
mask (equilibrated)
Chin-style gas mask (as received)
Chin-style gas mask (equilibrated)
Chemical Cartridge respirator (as
received)
Chemical cartridge respirator
(equilibrated)
Powered air-purifying respirator (tightfitting facepiece, as received)
Powered air-purifying respirator (tightfitting facepiece, equilibrated)
Powered air-purifying respirator
(loose-fitting hood or helmet, as
received)
Powered air-purifying respirator
(loose-fitting hood or helmet,
equilibrated)
Test concentration Flow rate Number of Minimum life
p.p.m. CCl4
l.p.m.
tests
minutes1
20,000
64
3
12
20,000
32
4
12
5,000
5,000
1,000
64
32
64
3
4
3
12
12
50
1,000
32
4
50
115
1,000
2
3
50
1,000
2
4
25
1,000
3
3
50
1,000
3
4
25
115
170
170
1
Minimum life will be determined at 5 p.p.m. leakage.
2
The flow rate shall be the effective flow rate of the device, but shall be not less than 115 l.p.m.
3
The flow rate shall be the effective flow rate of the device, but shall be not less than 170 l.p.m.
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| File Type | application/pdf |
| File Title | http://www.ecfr.gov/cgi-bin/retrieveECFR?gp=1&SID=3a5333ca1e62f |
| Author | IYQ7 |
| File Modified | 2014-07-15 |
| File Created | 2014-07-11 |