ASTM E2952-17(2021)

Standard Specification for Air-Purifying Respiratory Protective Smoke Escape Devices (RPED)

SCOPE
1.1 This specification covers the minimum requirements for the design, performance, testing, and certification of air-purifying respiratory protective smoke escape devices for immediate emergency evacuation without entry/re-entry.  
1.2 The purpose of this specification shall be to provide minimum requirements for respiratory protective escape devices that provide limited protection for 15 min for escape from the by-products of fire, including particulate matter, carbon monoxide, other toxic gases, and the effects of radiant heat.  
1.3 The requirements of this specification specify an air-purifying respiratory protective escape device with a laboratory-tested 15-min service life intended to provide head, eye, and respiratory protection from particulate matter, irritants, and toxic gases and vapors commonly produced by fire.  
1.4 Controlled laboratory tests that are used to determine compliance with the performance requirements of this specification shall not be deemed as establishing performance levels for all situations to which individuals can be exposed.  
1.5 This specification shall not apply to the requirements for provision, installation, or use of air-purifying respiratory protective smoke escape devices.  
1.6 This specification shall not apply to respiratory protective escape devices intended for use in circumstances in which an oxygen deficiency (oxygen less than 19.5 % by volume) exists or might exist.  
1.7 This specification is not intended to be used as a detailed manufacturing or purchase specification, but shall be permitted to be referenced as a minimum requirement in purchase specifications.  
1.8 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.9 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.10 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Historical
• Publication Date: 30-Jun-2021
• ICS: 13.340.30 - Respiratory protective devices
• Technical Committee: E54 - Homeland Security Applications
• Drafting Committee: E54.04 - Public Safety Equipment

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:E2952 −17 (Reapproved 2021)
Standard Specification for
Air-Purifying Respiratory Protective Smoke Escape Devices
(RPED)
This standard is issued under the fixed designation E2952; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 1.9 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
1.1 This specification covers the minimum requirements for
responsibility of the user of this standard to establish appro-
the design, performance, testing, and certification of air-
priate safety, health, and environmental practices and deter-
purifying respiratory protective smoke escape devices for
mine the applicability of regulatory limitations prior to use.
immediate emergency evacuation without entry/re-entry.
1.10 This international standard was developed in accor-
1.2 The purpose of this specification shall be to provide
dance with internationally recognized principles on standard-
minimum requirements for respiratory protective escape de-
ization established in the Decision on Principles for the
vicesthatprovidelimitedprotectionfor15minforescapefrom
Development of International Standards, Guides and Recom-
the by-products of fire, including particulate matter, carbon
mendations issued by the World Trade Organization Technical
monoxide, other toxic gases, and the effects of radiant heat.
Barriers to Trade (TBT) Committee.
1.3 The requirements of this specification specify an air-
2. Referenced Documents
purifying respiratory protective escape device with a
laboratory-tested 15-min service life intended to provide head, 2.1 ASTM Standards:
eye, and respiratory protection from particulate matter, B117 Practice for Operating Salt Spray (Fog) Apparatus
irritants, and toxic gases and vapors commonly produced by D1003 Test Method for Haze and Luminous Transmittance
fire. of Transparent Plastics
D4101 Classification System and Basis for Specification for
1.4 Controlled laboratory tests that are used to determine
Polypropylene Injection and Extrusion Materials
compliance with the performance requirements of this specifi-
F1140 Test Methods for Internal Pressurization Failure Re-
cation shall not be deemed as establishing performance levels
sistance of Unrestrained Packages
for all situations to which individuals can be exposed.
2.2 ISO Standards:
1.5 Thisspecificationshallnotapplytotherequirementsfor
ISO/IEC 17065 Conformity Assessment—Requirements for
provision, installation, or use of air-purifying respiratory pro-
Bodies Certifying Products, Processes and Services
tective smoke escape devices.
ISO9001 QualitySystems—ModelforQualityAssurancein
Design, Development, Production, Installation, and Ser-
1.6 This specification shall not apply to respiratory protec-
tive escape devices intended for use in circumstances in which vicing
ISO9002 QualitySystems—ModelforQualityAssurancein
an oxygen deficiency (oxygen less than 19.5 % by volume)
exists or might exist. Production, Installation, and Servicing.
2.3 NFPA Standard:
1.7 Thisspecificationisnotintendedtobeusedasadetailed
NFPA 1981 Standard on Open-Circuit Self-Contained
manufacturing or purchase specification, but shall be permitted
Breathing Apparatus for the Fire Service
to be referenced as a minimum requirement in purchase
specifications.
3. Terminology
1.8 Units—The values stated in SI units are to be regarded
3.1 Definitions:
as standard. No other units of measurement are included in this
standard.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
This specification is under the jurisdiction of ASTM Committee E54 on Standards volume information, refer to the standard’s Document Summary page on
Homeland Security Applications and is the direct responsibility of Subcommittee the ASTM website.
E54.04 on Personal Protective Equipment (PPE). Available from International Organization for Standardization (ISO), 1, ch. de
Current edition approved July 1, 2021. Published August 2021. Originally la Voie-Creuse, CP 56, CH-1211 Geneva 20, Switzerland, http://www.iso.org.
approved in 2014. Last previous edition approved in 2017 as E2952 – 17. DOI: Available from National Fire Protection Association (NFPA), 1 Batterymarch
10.1520/E2952-17R21. Park, Quincy, MA 02169-7471, http://www.nfpa.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
E2952−17 (2021)
3.1.1 air-purifying respiratory protective smoke escape 3.1.15 light transmission, n—ratiooftheluminous(approxi-
device, RPED, n—air-purifying respirator used to protect a mately 380- through 760-mm) radiant power transmitted by an
person while escaping from a fire by removing certain con- object to the incident luminous radiant power.
taminants of fire-generated products of combustion from the
3.1.16 listed, adj—equipment, materials, or services in-
inhaled air.
cluded in a list published by the certification organization.
3.1.2 accessory, n—item that may be provided with an
3.1.17 melt, v—to change from solid to liquid or become
RPED that does not affect its ability to meet the requirements
consumed by action of heat in a manner that could injure the
of this specification.
user.
3.1.3 approved, adj—acceptable to the authority having
3.1.18 model, n—term used to identify an RPED, including
jurisdiction.
all variants to its design.
3.1.4 authority having jurisdiction, n—organization, office,
3.1.19 product label, n—marking affixed to the RPED by
or individual responsible for approving any equipment, an
the manufacturer containing general information, warnings,
installation, or a procedure.
care, maintenance, or similar data.
3.1.5 basic plane, n—plane through the centers of the
3.1.19.1 Discussion—This product label is not the certifica-
external ear openings and the lower edges of the eye sockets. tion organization’s label, symbol, or identifying mark;
however, the certification organization’s label, symbol, or
3.1.6 certification/certify, n/adj—system whereby an orga-
identifying mark may be attached to it or be part of it. See
nization determines that a manufacturer has demonstrated the
labeled.
ability to produce a product that complies with the require-
ments of this specification, authorizes the manufacturer to use
3.1.20 ready-to-use configuration, n—RPED in its final
a label on listed products that comply with the requirements of
packaging state before use that, immediately upon opening or
this specification, and establishes a follow-up program con-
removing this operational package, allows the user to don the
ducted by the organization as a check on the methods the
RPED.
manufacturer uses to determine continued compliance of
3.1.21 RPED, n—a “short hand” acronym forAir-Purifying
labeled and listed products with the requirements of this
Respiratory Protective Smoke Escape Device.
specification.
3.1.22 service life, n—the manufacturer-declared duration
3.1.7 certification organization, n—independent third-party
of protection provided by the RPED for escape once the
organization that determines product compliance with the
operational packaging is opened or removed from an RPED in
requirements of this specification with a labeling/listing/
a ready-to-use configuration.
follow-up program.
3.1.23 shall, v—indicates a mandatory requirement.
3.1.8 compliance/compliant, n/adj—meeting or exceeding
3.1.24 shelf life, n—duration that an RPED can be stored
all applicable requirements of this specification.
under proper conditions in its ready-to-use configuration and
3.1.9 donning time, n—time for equipment in hand to be
remain suitable for use.
placedovertheheadofthewearerandbecomefunctional.This
time shall include the removal of an operational packaging.
4. Performance Requirements
3.1.10 follow-up program, n—sampling, inspections, tests,
4.1 Carbon Dioxide (CO ) Inhalation—RPED shall be
or other measures conducted by the certification organization
tested for CO levels in the inspired air stream as specified in
on a periodic basis to determine the continued compliance of
7.1 and shall not contain CO concentration levels that exceed
listed products that are being produced by the manufacturer to
2.5 %.
the requirements of this specification.
4.2 Donning—RPED shall be tested for donning ability as
3.1.11 gas, n—fluid that has neither independent shape nor
specified in 7.2. The time needed to don the RPED shall not
volume and tends to expand indefinitely.
exceed 30 s.
3.1.12 haze, n—percent of incident light that is not trans-
4.3 Breathing Resistance:
mitted in a straight line through the lens but forward scattered,
4.3.1 RPED shall be tested for resistance to breathing as
greater than 2.5° diverging.
specified in 7.3. The maximum inhalation resistance shall be
3.1.13 identical respiratory protective escape device,
81.5-mm water column below ambient pressure from the
n—RPED that is produced to the same engineering and
beginning of the test until its conclusion.
manufacturing specifications.
4.3.2 RPED shall be tested for resistance to breathing as
3.1.14 labeled, adj—equipment or material to which has
specified in 7.3. The maximum exhalation resistance shall be
been attached a label, symbol, or other identifying mark of an
30.6-mm water column above ambient pressure from the
organization that is acceptable to the authority having jurisdic-
beginning of the test until its conclusion.
tion and concerned with product evaluation, that maintains
4.4 Particulate Filtration—RPED shall be tested for the
periodic inspection of production of labeled equipment or
filtrationofparticlesasspecifiedin7.4.Theminimumfiltration
materials, and by whose labeling the manufacturer indicates
efficiency shall be 95 % at any time during the test.
compliance with appropriate standards or performance in a
specified manner. 4.5 Total Inward Leakage:
E2952−17 (2021)
4.5.1 RPED shall be tested for proper fit as specified in 7.5. develop a hole that is visible to the unaided eye or be damaged
Themaximumtotalinwardleakageofthechallengeagentshall in a manner that exposes eyes or lungs to gas or smoke.
be an average of 2 % of the inhaled air for any of the test 4.11.3 After having been tested for heat and flame, the
subjects in any of the test exercises. RPED shall be evaluated for vision as specified in 7.11.8. The
20/100 vision lines shall be legible.
4.5.2 The measured inward leakage shall include the exha-
lation valve leakage.
4.12 Molten Polymeric Drip Resistance:
4.6 Optical Properties: 4.12.1 RPEDshallbetestedforresistancetomoltendripsas
specified in 7.12. Any after flame shall not exceed 5 s.
4.6.1 Light Transmission—The vision area of the RPED
shall be tested for light transmission as specified in 7.6.1. The 4.12.2 RPEDshallbetestedforresistancetomoltendripsas
specifiedin7.12.Thedecreaseininhalationresistanceshallnot
vision area shall have minimum light transmission of 20 % and
the haze shall not exceed 15 %. exceed 25 %.
4.6.2 Field of Vision—The field of vision of the RPED shall 4.12.3 RPEDshallbetestedforresistancetomoltendripsas
specified in 7.12. No component shall drip, melt, or develop a
be tested as specified in 7.6.2 and shall have a score of at least
hole that is visible to the unaided eye.
70.
4.6.3 Fogging—The vision area of the RPED shall be tested
4.13 Radiant Heat Resistance:
for fogging as specified in 7.6.3. The test subject shall be
4.13.1 RPED shall be tested for resistance to radiant heat as
capable of reading the Snellen eye chart at the 20/100 level.
specified in 7.13. The temperature at the top of the head form
4.6.4 Ocular Leakage—RPED shall be tested for ocular
and in the eyepiece shall not exceed 70°C.
leakage as specified in 7.6.4. The maximum total ocular
4.13.2 RPED shall be tested for resistance to radiant heat as
leakage of the challenge agent shall be an average of 20 % of
specifiedin7.13.RPEDshallnotbecomedamagedinamanner
the outside challenge environment for any of the test subjects
that exposes eyes or lungs to gas or smoke.
in any of the test exercises.
4.14 Corrosion Resistance:
4.7 Operational Packaging Leakage:
4.14.1 RPED shall be tested for resistance to corrosion as
4.7.1 RPED shall be tested for leakage in its ready-to-use
specified in 7.14 and shall be evaluated for the proper use and
configuration as specified in 7.7.1.
functionofallcontrolsoroperatingfeatures,asspecifiedinthe
4.7.2 After immersion, the exterior shall be immediately
manufacturer’s instructions.
dried and weighed. There shall be no additional weight gain in
4.14.2 Metals that are used in the RPED, storage containers,
excess of the tolerance of the scale.
and accessories that are inherently resistant to corrosion
4.7.3 RPED shall be tested for burst strength in its ready to
including, but not limited to, stainless steel, brass, copper,
use configuration as specified in 7.7.2.
aluminum,andzinc,shallshownomorethanlightsurface-type
4.7.4 The RPED in the ready-to-use configuration shall not
corrosion or oxidation. Ferrous metals shall show no corrosion
experience a package burst until the internal pressure has been
of the base metals.
raised by at least 450 mbar (6.5 psi).
4.14.3 Following the corrosion resistance testing in accor-
dance with 7.14, RPED shall then be tested for resistance to
4.8 Chemical Capacity—The RPED shall be tested for gas
breathingasspecifiedin7.3.Theinhalationresistanceshallnot
breakthrough as specified in 7.8. The RPED shall have a
exceed 85-mm water column below ambient pressure from the
minimumgaslifeof15minforthebreakthroughconditionsfor
beginning of the test until its conclusion.
each of the seven specific gases detailed herein.
4.14.4 Following the corrosion resistance testing in 7.14,
4.9 Inhalation Temperature—RPED shall be tested for in-
RPED shall then be tested for resistance to breathing as
spired air temperature as specified in 7.9. The inhalation
specified in 7.3, Air Flow Resistance Test. The exhalation
temperature shall not exceed 90°C dry bulb or 50°C wet bulb
resistance shall not exceed 30.6-mm water column above
when run at a cyclic flow.
ambient pressure from the beginning of the test until its
4.10 Soot Particulate: conclusion.
4.10.1 RPED shall be tested for increased inhalation breath-
ingresistanceasaresultofsootparticulateasspecifiedin7.10.
5. Design Requirements
The inhalation breathing resistance shall not exceed 204-mm
5.1 General:
water column.
5.1.1 ThedesignoftheRPEDshallprovideprotectiontothe
4.10
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: E2952 − 17 E2952 − 17 (Reapproved 2021)
Standard Specification for
Air-Purifying Respiratory Protective Smoke Escape Devices
(RPED)
This standard is issued under the fixed designation E2952; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This specification covers the minimum requirements for the design, performance, testing, and certification of air-purifying
respiratory protective smoke escape devices for immediate emergency evacuation without entry/re-entry.
1.2 The purpose of this specification shall be to provide minimum requirements for respiratory protective escape devices that
provide limited protection for 15 min for escape from the by-products of fire, including particulate matter, carbon monoxide, other
toxic gases, and the effects of radiant heat.
1.3 The requirements of this specification specify an air-purifying respiratory protective escape device with a laboratory-tested
15-min service life intended to provide head, eye, and respiratory protection from particulate matter, irritants, and toxic gases and
vapors commonly produced by fire.
1.4 Controlled laboratory tests that are used to determine compliance with the performance requirements of this specification shall
not be deemed as establishing performance levels for all situations to which individuals can be exposed.
1.5 This specification shall not apply to the requirements for provision, installation, or use of air-purifying respiratory protective
smoke escape devices.
1.6 This specification shall not apply to respiratory protective escape devices intended for use in circumstances in which an oxygen
deficiency (oxygen less than 19.5 % by volume) exists or might exist.
1.7 This specification is not intended to be used as a detailed manufacturing or purchase specification, but shall be permitted to
be referenced as a minimum requirement in purchase specifications.
1.8 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this
standard.
1.9 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
This specification is under the jurisdiction of ASTM Committee E54 on Homeland Security Applications and is the direct responsibility of Subcommittee E54.04 on
Personal Protective Equipment (PPE).
Current edition approved Feb. 1, 2017July 1, 2021. Published March 2017August 2021. Originally approved in 2014. Last previous edition approved in 20142017 as
E2952 – 14.E2952 – 17. DOI: 10.1520/E2952-17.10.1520/E2952-17R21.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
E2952 − 17 (2021)
1.10 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
B117 Practice for Operating Salt Spray (Fog) Apparatus
D1003 Test Method for Haze and Luminous Transmittance of Transparent Plastics
D4101 Classification System and Basis for Specification for Polypropylene Injection and Extrusion Materials
F1140 Test Methods for Internal Pressurization Failure Resistance of Unrestrained Packages
2.2 ISO Standards:
ISO/IEC 17065 Conformity Assessment—Requirements for Bodies Certifying Products, Processes and Services
ISO 9001 Quality Systems—Model for Quality Assurance in Design, Development, Production, Installation, and Servicing
ISO 9002 Quality Systems—Model for Quality Assurance in Production, Installation, and Servicing.
2.3 NFPA Standard:
NFPA 1981 Standard on Open-Circuit Self-Contained Breathing Apparatus for the Fire Service
3. Terminology
3.1 Definitions:
3.1.1 air-purifying respiratory protective smoke escape device, RPED, n—air-purifying respirator used to protect a person while
escaping from a fire by removing certain contaminants of fire-generated products of combustion from the inhaled air.
3.1.2 accessory, n—item that may be provided with an RPED that does not affect its ability to meet the requirements of this
specification.
3.1.3 approved, adj—acceptable to the authority having jurisdiction.
3.1.4 authority having jurisdiction, n—organization, office, or individual responsible for approving any equipment, an installation,
or a procedure.
3.1.5 basic plane, n—plane through the centers of the external ear openings and the lower edges of the eye sockets.
3.1.6 certification/certify, n/adj—system whereby an organization determines that a manufacturer has demonstrated the ability to
produce a product that complies with the requirements of this specification, authorizes the manufacturer to use a label on listed
products that comply with the requirements of this specification, and establishes a follow-up program conducted by the
organization as a check on the methods the manufacturer uses to determine continued compliance of labeled and listed products
with the requirements of this specification.
3.1.7 certification organization, n—independent third-party organization that determines product compliance with the require-
ments of this specification with a labeling/listing/follow-up program.
3.1.8 compliance/compliant, n/adj—meeting or exceeding all applicable requirements of this specification.
3.1.9 donning time, n—time for equipment in hand to be placed over the head of the wearer and become functional. This time shall
include the removal of an operational packaging.
3.1.10 follow-up program, n—sampling, inspections, tests, or other measures conducted by the certification organization on a
periodic basis to determine the continued compliance of listed products that are being produced by the manufacturer to the
requirements of this specification.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Available from International Organization for Standardization (ISO), 1, ch. de la Voie-Creuse, CP 56, CH-1211 Geneva 20, Switzerland, http://www.iso.org.
Available from National Fire Protection Association (NFPA), 1 Batterymarch Park, Quincy, MA 02169-7471, http://www.nfpa.org.
E2952 − 17 (2021)
3.1.11 gas, n—fluid that has neither independent shape nor volume and tends to expand indefinitely.
3.1.12 haze, n—percent of incident light that is not transmitted in a straight line through the lens but forward scattered, greater
than 2.5° diverging.
3.1.13 identical respiratory protective escape device, n—RPED that is produced to the same engineering and manufacturing
specifications.
3.1.14 labeled, adj—equipment or material to which has been attached a label, symbol, or other identifying mark of an
organization that is acceptable to the authority having jurisdiction and concerned with product evaluation, that maintains periodic
inspection of production of labeled equipment or materials, and by whose labeling the manufacturer indicates compliance with
appropriate standards or performance in a specified manner.
3.1.15 light transmission, n—ratio of the luminous (approximately 380- through 760-mm) radiant power transmitted by an object
to the incident luminous radiant power.
3.1.16 listed, adj—equipment, materials, or services included in a list published by the certification organization.
3.1.17 melt, v—to change from solid to liquid or become consumed by action of heat in a manner that could injure the user.
3.1.18 model, n—term used to identify an RPED, including all variants to its design.
3.1.19 product label, n—marking affixed to the RPED by the manufacturer containing general information, warnings, care,
maintenance, or similar data.
3.1.19.1 Discussion—
This product label is not the certification organization’s label, symbol, or identifying mark; however, the certification organization’s
label, symbol, or identifying mark may be attached to it or be part of it. See labeled.
3.1.20 ready-to-use configuration, n—RPED in its final packaging state before use that, immediately upon opening or removing
this operational package, allows the user to don the RPED.
3.1.21 RPED, n—a “short hand” acronym for Air-Purifying Respiratory Protective Smoke Escape Device.
3.1.22 service life, n—the manufacturer-declared duration of protection provided by the RPED for escape once the operational
packaging is opened or removed from an RPED in a ready-to-use configuration.
3.1.23 shall, v—indicates a mandatory requirement.
3.1.24 shelf life, n—duration that an RPED can be stored under proper conditions in its ready-to-use configuration and remain
suitable for use.
4. Performance Requirements
4.1 Carbon Dioxide (CO ) Inhalation—RPED shall be tested for CO levels in the inspired air stream as specified in 7.1 and shall
2 2
not contain CO concentration levels that exceed 2.5 %.
4.2 Donning—RPED shall be tested for donning ability as specified in 7.2. The time needed to don the RPED shall not exceed
30 s.
4.3 Breathing Resistance:
4.3.1 RPED shall be tested for resistance to breathing as specified in 7.3. The maximum inhalation resistance shall be 81.5-mm
water column below ambient pressure from the beginning of the test until its conclusion.
E2952 − 17 (2021)
4.3.2 RPED shall be tested for resistance to breathing as specified in 7.3. The maximum exhalation resistance shall be 30.6-mm
water column above ambient pressure from the beginning of the test until its conclusion.
4.4 Particulate Filtration—RPED shall be tested for the filtration of particles as specified in 7.4. The minimum filtration efficiency
shall be 95 % at any time during the test.
4.5 Total Inward Leakage:
4.5.1 RPED shall be tested for proper fit as specified in 7.5. The maximum total inward leakage of the challenge agent shall be
an average of 2 % of the inhaled air for any of the test subjects in any of the test exercises.
4.5.2 The measured inward leakage shall include the exhalation valve leakage.
4.6 Optical Properties:
4.6.1 Light Transmission—The vision area of the RPED shall be tested for light transmission as specified in 7.6.1. The vision area
shall have minimum light transmission of 20 % and the haze shall not exceed 15 %.
4.6.2 Field of Vision—The field of vision of the RPED shall be tested as specified in 7.6.2 and shall have a score of at least 70.
4.6.3 Fogging—The vision area of the RPED shall be tested for fogging as specified in 7.6.3. The test subject shall be capable
of reading the Snellen eye chart at the 20/100 level.
4.6.4 Ocular Leakage—RPED shall be tested for ocular leakage as specified in 7.6.4. The maximum total ocular leakage of the
challenge agent shall be an average of 20 % of the outside challenge environment for any of the test subjects in any of the test
exercises.
4.7 Operational Packaging Leakage:
4.7.1 RPED shall be tested for leakage in its ready-to-use configuration as specified in 7.7.1.
4.7.2 After immersion, the exterior shall be immediately dried and weighed. There shall be no additional weight gain in excess
of the tolerance of the scale.
4.7.3 RPED shall be tested for burst strength in its ready to use configuration as specified in 7.7.2.
4.7.4 The RPED in the ready-to-use configuration shall not experience a package burst until the internal pressure has been raised
by at least 450 mbar (6.5 psi).
4.8 Chemical Capacity—The RPED shall be tested for gas breakthrough as specified in 7.8. The RPED shall have a minimum gas
life of 15 min for the breakthrough conditions for each of the seven specific gases detailed herein.
4.9 Inhalation Temperature—RPED shall be tested for inspired air temperature as specified in 7.9. The inhalation temperature shall
not exceed 90°C dry bulb or 50°C wet bulb when run at a cyclic flow.
4.10 Soot Particulate:
4.10.1 RPED shall be tested for increased inhalation breathing resistance as a result of soot particulate as specified in 7.10. The
inhalation breathing resistance shall not exceed 204-mm water column.
4.10.2 RPED shall be tested for increased exhalation breathing resistance as a result of soot particulate as specified in 7.10. The
exhalation breathing resistance shall not exceed 153-mm water column.
4.11 Flammability:
E2952 − 17 (2021)
4.11.1 RPED shall be tested for heat and flame resistance as specified in 7.11. Components of the RPED shall not have any after
flame after 5 s.
4.11.2 RPED shall be tested for heat and flame resistance as specified in 7.11. No RPED component shall drip, melt, or develop
a hole that is visible to the unaided eye or be damaged in a manner that exposes eyes or lungs to gas or smoke.
4.11.3 After having been tested for heat and flame, the RPED shall be evaluated for vision as specified in 7.11.8. The 20/100 vision
lines shall be legible.
4.12 Molten Polymeric Drip Resistance:
4.12.1 RPED shall be tested for resistance to molten drips as specified in 7.12. Any after flame shall not exceed 5 s.
4.12.2 RPED shall be tested for resistance to molten drips as specified in 7.12. The decrease in inhalation resistance shall not
exceed 25 %.
4.12.3 RPED shall be tested for resistance to molten drips as specified in 7.12. No component shall drip, melt, or develop a hole
that is visible to the unaided eye.
4.13 Radiant Heat Resistance:
4.13.1 RPED shall be tested for resistance to radiant heat as specified in 7.13. The temperature at the top of the head form and
in the eyepiece shall not exceed 70°C.
4.13.2 RPED shall be tested for resistance to radiant heat as specified in 7.13. RPED shall not become damaged in a manner that
exposes eyes or lungs to gas or smoke.
4.14 Corrosion Resistance:
4.14.1 RPED shall be tested for resistance to corrosion as specified in 7.14 and shall be evaluated for the
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