ISO/TS 16973:2016
(Main)Respiratory protective devices — Classification for respiratory protective device (RPD), excluding RPD for underwater application
Respiratory protective devices — Classification for respiratory protective device (RPD), excluding RPD for underwater application
ISO/TS 16973:2016 specifies the classification of Respiratory Protective Devices based on their performance. The performance requirements are given in the relevant performance standards.
Appareils de protection respiratoire — Classification pour les APR, à l'exclusion des APR pour application sous-marine
L'ISO/TS 16973:2016 définit la classification des appareils de protection respiratoire compte tenu de leurs performances. Les exigences de performances sont données dans les normes de performance applicables.
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Standards Content (Sample)
TECHNICAL ISO/TS
SPECIFICATION 16973
First edition
Respiratory protective devices —
Classification for respiratory
protective device (RPD), excluding
RPD for underwater application
Appareils de protection respiratoire — Classification pour les APR, à
l’exclusion des APR pour application sous-marine
PROOF/ÉPREUVE
Reference number
©
ISO 2016
© ISO 2016, Published in Switzerland
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ii © ISO 2016 – All rights reserved
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Mode of operation . 1
5 Protection classes (PC) . 2
6 Work rate . 2
7 Respiratory interface class . 3
8 Supplied breathable gas RPD capacity class . 3
9 Filter class. 3
9.1 Particle filter class . 3
9.1.1 Particle filter efficiency . 4
9.1.2 Particle filter work rate class . 4
9.2 Gas filter class . 4
9.2.1 General. 4
9.2.2 Gas filter capacity . 4
10 RPD using standardized connector . 5
11 Special application class . 5
11.1 General . 5
11.2 Firefighting class . 6
11.3 Chemical, biological, radiological and nuclear class . 6
11.4 Marine class . 6
11.5 Mining class . 7
11.6 Abrasive blasting class . 7
11.7 Welding class . 7
11.8 Escape class . 7
12 Sequence of marking information . 8
12.1 Sequence of marking-supplied breathable gas RPD . 8
12.2 Sequence of marking-filtering RPD . 8
12.3 Sequence of marking-filter . 9
12.4 Sequence of marking-respiratory interface using standardized connector. 9
12.5 Sequence of marking-filters using standardized connector . 9
Annex A (normative) Classification and related marking scheme overview .10
Annex B (informative) Examples for ISO classification and related marking.15
Annex C (informative) Special applications .24
Annex D (informative) Protection levels .26
Annex E (informative) Work rate class .31
Annex F (informative) Respiratory interface class .33
Bibliography .35
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information.
ISO/TS 16973 was prepared by Technical Committee ISO/TC 94, Personal safety — Protective clothing
and equipment, Subcommittee SC 15, Respiratory protective devices.
iv PROOF/ÉPREUVE © ISO 2016 – All rights reserved
Introduction
This Technical Specification contains the classification of Respiratory Protective Devices (RPD) and the
related marking in accordance with the requirements of the performance standards.
The basic classification, which applies to all RPD, will be marked in the following order:
a) protection class;
b) work rate class;
c) respiratory interface class.
Some examples for marking of commonly known RPD are included in Annex B.
For Supplied Breathable Gas RPD, the classification also includes gas capacity class.
For Filtering RPD, the classification also includes a particle filter class and/or the gas filter types and
classes.
RPD designated to be used for Special Applications are further classified accordingly.
The special applications identified are
— firefighting,
— chemical, biological, radiological and nuclear (CBRN),
— marine,
— mining,
— abrasive blasting,
— welding, and
— escape.
Each RPD will have an individual classification based on its performance specified in the relevant
performance standards.
Explanations of the classification and examples of the classification of RPD are given in the Annexes.
The following definitions apply in understanding how to implement an ISO International Standard and
other normative ISO deliverables (TS, PAS, IWA):
— “shall” indicates a requirement;
— “should” indicates a recommendation;
— “may” is used to indicate that something is permitted;
— “can” is used to indicate that something is possible, for example, that an organization or individual
is able to do something.
3.3.1 of the ISO/IEC Directives, Part 2 (sixth edition, 2011) defines a requirement as an “expression in
the content of a document conveying criteria to be fulfilled if compliance with the document is to be
claimed and from which no deviation is permitted.”
3.3.2 of the ISO/IEC Directives, Part 2 (sixth edition, 2011) defines a recommendation as an “expression
in the content of a document conveying that among several possibilities one is recommended as
particularly suitable, without mentioning or excluding others, or that a certain course of action is
preferred but not necessarily required, or that (in the negative form) a certain possibility or course of
action is deprecated but not prohibited.”
vi PROOF/ÉPREUVE © ISO 2016 – All rights reserved
TECHNICAL SPECIFICATION ISO/TS 16973:2016(E)
Respiratory protective devices — Classification for
respiratory protective device (RPD), excluding RPD for
underwater application
1 Scope
This Technical Specification specifies the classification of Respiratory Protective Devices based on
their performance. The performance requirements are given in the relevant performance standards.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 16900-1, Respiratory protective devices — Methods of test and test equipment — Part 1: Determination
of inward leakage
ISO 16900-3, Respiratory protective devices — Methods of test and test equipment — Part 3: Determination
of particle filter penetration
ISO 16900-12, Respiratory protective devices — Methods of test and test equipment — Part 12:
Determination of volume-averaged work of breathing and peak respiratory pressures
ISO 16972, Respiratory protective devices — Terms, definitions, graphical symbols and units of measurement
ISO/TS 16976-1, Respiratory protective devices — Human factors — Part 1: Metabolic rates and
respiratory flow rates
ISO 17420-3, Respiratory protective devices — Performance requirements — Part 3: Thread connection
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 16972 apply.
4 Mode of operation
There are two modes of operation that RPD may employ to supply breathable gas to the wearer. These
modes are specified in Table 1.
Table 1 — Mode of operation
Mode of operation Means of providing breathable gas to the wearer Typical examples of RPD
The RPD supplies the wearer with breathable gas Compressed airline breath-
Breathable gas supply from a remote supply of breathable gas or from ing apparatus, self-contained
breathable gas stored in, or regenerated by, the RPD. breathing apparatus (SCBA)
The RPD removes gases, vapours and/or particles
Half mask with gas filter(s)
from the ambient air depending on the air-purifying
Filtration
element (filter) used. These can be assisted or unas-
Filtering facepiece
sisted devices.
Combined RPD are devices which have both filtration and breathable gas supply modes. Combined RPD
can have different classes depending on the operating method being used. An example will be an RPD
which can operate as a compressed airline breathing apparatus and has an auxiliary filter.
Multi-functional RPD are RPD which have different methods of operation within either filtration or
breathable gas supply modes.
Multi-functional RPD can have different classes depending on the operating method being used.
An example would be an RPD which can operate as a compressed airline breathing apparatus with an
auxiliary self-contained breathing apparatus. Another example is an assisted filtering RPD which can
operate as an unassisted filtering RPD when not powered.
The performance requirements for breathable gas supply RPD and filtering RPD are specified in the
relevant performance standards.
5 Protection classes (PC)
RPD shall be classified by Protection Class.
The Protection classes are derived from the results of a laboratory Total Inward Leakage (TIL)
test in accordance with ISO 16900-1 and the relevant performance standards. These classes are
provided in Table 2.
Table 2 — Protection classes
TIL
MAX
Protection Class
%
PC1 20
PC2 5
PC3 1
PC4 0,1
PC5 0,01
PC6 0,001
NOTE TIL is the ratio of the concentration of a test agent in the breathing zone inside the RPD compared
with the concentration outside the RPD, expressed as a percentage. This is the level of total inward leakage of
the RPD as measured in the laboratory under standard defined conditions. TIL levels used in RPD evaluation are
given in Table 2 and Figure A.1.
For further information, see informative Annex D.
6 Work rate
RPD shall be classified by Work rate class, as determined by the RPD manufacturer. The Work rate
classes are derived from the results of a laboratory test, Work of breathing, and the related performance
requirement, in accordance with ISO 16900-12 and the relevant performance standards.
These classes are
— W4, which is equivalent to ISO/TS 16976-1 work class 8 (maximal),
— W3, which encompasses ISO/TS 16976-1 work classes 7 and 6 (extremely heavy and very-very heavy),
— W2 which encompasses ISO/TS 16976-1 work classes 5 and 4 (very heavy and heavy), and
— W1, which encompasses ISO/TS 16976-1 work classes 3, 2 and 1 (moderate and light).
2 PROOF/ÉPREUVE © ISO 2016 – All rights reserved
For further information, see Annex E. RPD designated for special applications may have performance
requirements with minimum work rate classes.
7 Respiratory interface class
Respiratory interfaces shall be classified by coverage area [see Figure F.1, a) to e)].
Respiratory interfaces shall be further classified by type: tight fitting; those that form a seal with the
wearer’s skin, and loose fitting, those that have a partial seal or no seal with the skin of the wearer. See
Table 3, Figure A.1 and Figure F.1.
Table 3 — Respiratory interface classes
RI Class RI area Type
eL e - more than head, up to complete body L-Loose fitting
eT e - more than head, up to complete body T-Tight fitting
dL d - Head L-Loose fitting
dT d - Head T-Tight fitting
cL c - Face L-Loose fitting
cT c - Face T-Tight fitting
bL b - Nose and mouth L-Loose fitting
bT b - Nose and mouth T-Tight fitting
aL a - Mouth only L-Loose fitting
aT a - Mouth only T-Tight fitting
8 Supplied breathable gas RPD capacity class
Supplied breathable gas RPD that have a fixed volume of breathable gas (self-contained) shall be
classified by the volume of breathable gas available for respiration and shall be designated by the
letter “S” followed by the gas capacity in litres rounded down to increments of 150 l up to 900 l and
increments of 300 l above 900 l.
Supplied breathable gas RPD that have an external supply of breathable gas shall be classified and
marked “SY”.
Gas Capacity classification of these devices is shown in Table 4 and Figure A.2.
Table 4 — Supplied breathable gas capacity
Gas capacity
Class
l
Sxxxx Where xxxx is the available breathable gas volume for respiration
SY Air supply from an external source (air line supplied)
9 Filter class
9.1 Particle filter class
Particle filters shall be classified by their efficiency and work rate.
9.1.1 Particle filter efficiency
Five classes of particle filter efficiency are defined ranging from very low efficiency to extremely high
efficiency. Table 5 and Figure A.3 list the filter classes and their minimum filter efficiency as determined
in laboratory filter efficiency tests in accordance with ISO 16900-3 by testing at the relevant flowrate in
accordance with the work rate class.
Table 5 — Particle filter class
Particle filter efficiency
Class
%
F1 ≥80,00
F2 ≥95,00
F3 ≥99,00
F4 ≥99,90
F5 ≥99,99
9.1.2 Particle filter work rate class
Particle filters are classified by work rate and are also marked with a lower case “w” and the work rate
class number, i.e. “w1”, “w2”, “w3” or “w4” after the efficiency and/or capacity class.
9.2 Gas filter class
9.2.1 General
A gas filter shall be classified by type (kind of gases), class (based on gas capacity) and work rate.
A given gas filter can be of one type only or a multiple type.
9.2.2 Gas filter capacity
A gas filter is classified by its capacity to remove the contaminants and is tested at different
concentrations depending on the class (1, 2, 3, and 4) and different flows depending on the work rate.
Some filters are for many contaminants within a category, e.g. organic vapours, and others for specific
gases or vapours, e.g. Arsine. Up to four capacity classes are defined depending on the filter type as
shown in Table 6, Table 7 and Figure A.3. Gas filter work rate class.
Gas filters are classified by work rate and are also marked with a lower case “w” and the work rate class
number, i.e. “w1”, “w2”, ”w3” or “w4”, after the efficiency and/or capacity class.
Table 6 — Gas filter types and classes
Type Classes Type description Typical contaminants
C H (Toluene)
7 8
OV 1, 2, 3 or 4 Organic vapour
C H (Cyclohexane)
6 12
C H O (Acetone)
3 6
Organic gas
OG 1 C H (Isobutane)
4 10
(low boiling, i.e. below 65 °C)
C H O (Dimethylether)
2 6
Cl (Chlorine)
H S (Hydrogen sulphide)
AC 1, 2, 3 or 4 Acidic compounds
HCl (Hydrogen chloride)
SO (Sulfur dioxide)
4 PROOF/ÉPREUVE © ISO 2016 – All rights reserved
Table 6 (continued)
Type Classes Type description Typical contaminants
NH , (Ammonia)
BC 1, 2, 3 or 4 Basic compounds
CH NH (Methylamine)
3 2
NOX 1, 2, or 3 Nitrogen oxides NO (Nitrogen oxides)
x
Table 7 — Specific gas filter types and classes
Type Classes Gas or vapour
ND 1, 2 or 3 Nitrogen dioxide (NO )
HG 1, 2 or 3 Mercury (Hg)
OZ 1 Ozone (O )
HCN 1, 2, 3 or 4 Hydrogen Cyanide (HCN)
AH 1 Arsine (AsH )
HF 1, 2 or 3 Hydrogen fluoride (HF)
CD 1 Chlorine dioxide (ClO )
ETO 1 or 2 Ethylene oxide ((CH ) O)
2 2
FM 1, 2 or 3 Formaldehyde (CH O)
MB 1, 2 or 3 Methylbromide (CH Br)
Three classes based on time
CO Carbon monoxide (CO)
(20 min, 60 min or 180 min)
PH 1 or 2 Phosphine (PH )
10 RPD using standardized connector
Some complete RPD include respiratory interfaces and filters with standardized connectors in
accordance with ISO 17420-3, to allow interchangeability. Limitations to classes apply as specified in
the relevant performance standard.
A respiratory interface and filter with standardized connector is marked with their classification, also
as specified in the relevant performance standard. The symbol for Standardized connector, ⊚, is added
to the marking. Filters with standardized connectors are validated for work rate class w1 or w2.
11 Special application class
11.1 General
Special applications specify different areas of RPD use with specific performance requirements.
Minimum Protection class (PC) and Work rate class (W) are set in accordance with the relevant
performance standards and are specified in 11.2 to 11.8. These classes shall be met in order to be
classified for the special application. Higher PC and W classes are not excluded.
Special applications include
— firefighting,
— CBRN,
— marine,
— mining,
— abrasive blasting,
— welding, and
— escape.
Special application devices are designated by alpha-numeric designation.
RPD to be used in special applications will be required to comply with additional performance
requirements (e.g. additional resistance to heat and flame for RPD intended for use in firefighting).
11.2 Firefighting class
RPD for Firefighting are designated by the respective RPD classifications followed by FF and the
numeric designation for specific firefighting application. These specific applications are wildland
firefighting, rescue, hazardous materials and structural firefighting. See Table 8 and Figure A.4.
Table 8 — Firefighting classes
Minimum Minimum work
Class Application
protection class rate class
a
FF5 Structural firefighting Type R2 PC5 W4
FF4 Structural firefighting Type R1 PC5 W3
FF3 Hazardous materials PC5 W3
FF2 Rescue PC4 W3
FF1 Wildland firefighting PC3 W2
a
Type R2 includes higher level of thermal exposure than Type R1 according to ISO 11999-1.
11.3 Chemical, biological, radiological and nuclear class
RPD for CBRN are designated by the respective RPD classifications followed by and the numeric
designation for specific CBRN application. See Table 9 and Figure A.4.
Table 9 — Chemical, biological, radiological and nuclear classes
Class Application Minimum protection class Minimum work rate class
CBRN 3 First on-scene responder PC5 W3
Responder
CBRN 2 PC5 W1
(known threat environment)
CBRN 1 Receiver/first receiver PC4 W1
11.4 Marine class
RPD for Marine are designated by the respective RPD classifications followed by MA and the numeric
designation for specific Marine application. These specific applications are firefighting and hazardous
materials. See Table 10 and Figure A.4.
Table 10 — Marine classes
Minimum protection Minimum work rate
Class Application
class class
MA2 Marine firefighting W4
PC5
MA1 Hazardous materials W3
6 PROOF/ÉPREUVE © ISO 2016 – All rights reserved
11.5 Mining class
RPD for Mining are designated by the respective RPD classifications followed by MN followed by the
numeric designation for specific Mining application. These specific applications are: Underground non-
explosive atmosphere, Underground explosive atmosphere and Firefighting. See Table 11 and Figure A.4.
Table 11 — Mining classes
Minimum protection Minimum work
Class Application
class rate class
a
MN4 Mining Firefighting and Rescue Type R2 PC5 W4
MN3 Mining Firefighting and Rescue Type R1 PC4 W2
MN2 Underground mining explosive
PC1 W2
MN1 Underground mining non-explosive
a
Type R2 includes higher level of thermal exposure than Type R1 according to ISO 11999-1.
11.6 Abrasive blasting class
RPD for abrasive blasting are designated by the respective RPD classifications followed by AB followed
by the numeric designation for specific abrasive blasting application. Currently, only one numeric
designation has been identified. See Table 12 and Figure A.4.
Table 12 — Abrasive blasting class
Minimum protection Minimum work
Class Application
class rate class
AB Abrasive blasting PC3 W1
11.7 Welding class
RPD for welding are designated by the respective RPD classifications followed by WE. See Table 13
and Figure A.4.
Table 13 — Welding class
Minimum protection Minimum work
Class Application
class rate class
WE Welding PC1 W1
11.8 Escape class
RPD for escape only are designated by the respective RPD classifications followed by ES and the specific
application and the duration in minutes. Escape RPD can be filtering or supplied breathable gas devices.
Escape general Filtering RPD are designated by ES followed the gas filter type, e.g. ES OV (t).
Escape general, supplied breathable gas RPD, are not designated for a specific contaminant. See
Table 14, Table 15 and Figure A.4.
Table 14 — Escape classes
Minimum
Minimum work
Class Application Duration protection
rate class
class
ES MN t Mining Escape
ES MA t Marine Escape
ES CBRN t CBRN Escape
b
t PC3 W1
ES FF t Escape from fire
a
ES XX t Escape general filtering RPD
ES t Escape general supplied breathable gas RPD
a
XX is the type of gas filter.
b
The “t” values in the table above are listed in Table 15.
Table 15 — Designated durations
“t” - Designated duration (minutes) Steps
5 to 30 (5, 10,15, 20, 25, 30) 5 min
30 to 60 (40, 50, 60) 10 min
60 to 120 (90, 120) 30 min
120 and above (180, 240…) 60 min
12 Sequence of marking information
12.1 Sequence of marking-supplied breathable gas RPD
The sequence of classification marking is as follows:
— protection class;
— work rate;
— respiratory interface;
— supplied breathable gas capacity;
— special application.
For examples of marking, see Annex B.
12.2 Sequence of marking-filtering RPD
The sequence of classification marking is as follows:
— protection class;
— work rate;
— respiratory interface;
— particle filter, if applicable;
— gas filter, if applicable;
— special application, if applicable.
8 PROOF/ÉPREUVE © ISO 2016 – All rights reserved
For examples of marking, see Annex B.
12.3 Sequence of marking-filter
The sequence of classification marking is as follows:
— particle filter, if applicable;
— gas filter, if applicable;
— work rate in lower case w;
— special application, if applicable.
For examples of marking, see Annex B.
12.4 Sequence of marking-respiratory interface using standardized connector
The sequence of classification marking is as follows:
— standardized connector symbol;
— protection class;
— work rate;
— respiratory interface.
For examples of marking, see Annex B.
12.5 Sequence of marking-filters using standardized connector
The sequence of classification marking is as follows:
— standardized connector symbol;
— particle filter, if applicable;
— gas filter, if applicable;
— work rate class in lower case w.
For examples of marking, see Annex B.
Annex A
(normative)
Classification and related marking scheme overview
Each RPD shall have an individual classification based on its performance specified in the relevant
performance standards. Figure A.1 to Figure A.4 give an overview of all the possible RPD classes.
All RPD shall have a basic classification consisting of a Protection Class, Work rate class, and Respiratory
interface class in accordance with Figure A.1
Supplied Breathable gas RPD shall be classified in accordance with Figure A.1 followed by the supplied
breathable gas capacity class in accordance with Figure A.2.
Filtering RPD shall be classified in accordance with Figure A.1 followed by the filter type and class
classification in accordance with Figure A.3.
RPD designated for Special Application shall be classified in accordance with Figure A.1 and Figure A.2
or Figure A.3, followed by the Special applications classification in accordance with Figure A.4.
10 PROOF/ÉPREUVE © ISO 2016 – All rights reserved
PC6
(0,001 % TILmax)
T
Tight
PC5 e
(0,01% TILmax) Body
L
Loose
T
W4
Tight
PC4 d
Maximal
(0,1 % TIL ) Head
max
L
(135 l/min and lower)
Loose
T
W3
Tight
PC3 c
Extremely heavy
(1 % TILmax) Face
L
(105 l/min and lower)
Loose
T
W2
Tight
PC2 b
Very heavy and lower
(5 % TILmax) Mouth and nose
L
(65l/min and lower)
Loose
T
W1
Tight
PC1 a
Moderate
[20% TIL ) Mouth only
max
L
(35l/min and lower)
Loose
Respiratory interface
Protection ClassWork rate Class
Class
Basic Classiication for all RPD
Figure A.1 — Basic classification for all RPD
Sxxxx
Breathable Gas Supply of xxxx litres designated in increments
of 150l up to 900l and increments of 300l above 900 l.
SY
Air supply from an external source (airline RPD)
Class
(Capacity of breathable gas)
Supplied Breathable Gas capacity classiication
Figure A.2 — Supplied breathable gas capacity classification
12 PROOF/ÉPREUVE © ISO 2016 – All rights reserved
Chemical symbol
Undeined speciic
substance
3 3
HG PH
Mercury Phosphine
2 2
1 1
NOX
3 3
F5 FM ETO
Nitrous
(99,99 %) Formaldehyde Ethylene Oxide
2 2 2
Oxides
1 1 1
MB
3 3
F4 OG CO
Methyl
(99,9%) Organic gases Carbon Monoxide
2 2
Bromide
1 1 1
4 4
HCN
3 3
F3 AC CD
Hydrogen
(99%) Acidic Chlorine Dioxide
2 2
Cyanide
1 1 1
3 3
F2 BC OZ HF
(95%) Basic Ozone Hydrogen Fluoride
2 2
1 1 1
ND
3 3
F1 OV AH
Nitrogen
(80%) Organic Vapours Arsine
2 2
Dioxide
1 1 1
Class
(Minimum
Type Type
particle
Gas ilter Speciic gas ilter
ilter
eficiency)
Filter classiication
NOTE Filters are also classified by work rate and are marked with a lower case w and the work rate class
number, i.e. “w1”, “w2”, ”w3” or “w4”, after the efficiency and/or capacity class.
Figure A.3 — Filter classification
Class
Class
NOTE Each Special Application RPD may have a minimum Protection Class (PC) and minimum Work rate
Class (W).
Figure A.4 — RPD classification for Special application
14 PROOF/ÉPREUVE © ISO 2016 – All rights reserved
ES MN t
Mining Escape
FF5
ES MA t
Structural Fireighting
Marine Escape
R2
FF4
MN4 ES CBRN t
Structural Fireighting
Fireighting R2 CBRN Escape
R1
CBRN3
FF3 MN3 ES FF t
First on-scene
Hazardous Materials Fireighting R1 Escape from ire
responder
CBRN2
MN2 ES XX t
Responder
FF2 MA2
Underground explosive Escape General Filtering
Rescue Fireighting
(known threat
atmosphere (xx is gas ilter type)
environment)
CBRN1
MA1 MN1 AB ES t
FF1 Gas WE
Hazardous Underground non- Abrasive Escape General Supplied
Wildland Fireighting Receiver/First Welding
Materials explosive atmosphere Blasting breathable gas
Receiver
Class
Class Class
Chemical, Class
Class Marine Class Class Escape
Biological, Abrasive
Fireighting (Shipboard and Mining Welding (Nominal service life in
Radiological and Blasting
Offshore) t min)
Nuclear
RPD Classiication for Special Application
Annex B
(informative)
Examples for ISO classification and related marking
B.1 General
The following are examples of today’s RPD converted into the corresponding ISO terminology.
B.1.1 Example A
A positive pressure compressed air breathing apparatus with a full face mask with a total inward leakage
<0,001 % and validated for ISO work rate 4. Available breathable gas capacity: 1 260 l. See Table B.1.
Table B.1 — Example A
Performance Class
Protection class PC6
Work rate W4
Respiratory Interface cT
Supplied breathable gas capacity S1200
ISO RPD classification and marking: PC6 W4 cT S1200
B.1.2 Example B
A filtering facepiece protecting the wearer against harmful particles, with a total inward leakage of
<20 %, being validated for ISO work rate 1 and having a minimum filter efficiency of 99 %. See Table B.2.
Table B.2 — Example B
Performance Class
Protection class PC1
Work rate W1
Respiratory Interface bT
Particle Filter Efficiency F3w1
ISO RPD classification and marking: PC1 W1 bT F3
B.1.3 Example C
A powered air purifying respirator with a respiratory interface (loose fitting hood) and organic vapour
filters with class I capacity tested and validated at ISO work rate 2. The RPD protects the wearer against
contaminants with a total inward leakage of <1 %. See Table B.3.
Table B.3 — Example C
Performance Class
Protection class PC3
Work rate W2
Respiratory Interface dL
Gas filter type/class OV1 w2
ISO RPD classification and marking: PC3 W2 dL OV1
B.1.4 Example D
A tight fitting full face mask air purifying respirator with organic vapours, acidic gas, basic gas, Class 3
and particle filters with >99,99 % efficiency, which is validated at ISO work rate 1 with a total inward
leakage of <0,1 %. The example in Table B.4 includes a combination filter.
Table B.4 — Example D
Performance Class
Protection class PC4
Work rate W1
Respiratory interface cT
Combination filter type/class F5 OV3 AC3 BC3 w1
ISO RPD classification and marking: PC4 W1 cT F5 OV3 AC3 BC3
B.1.5 Example E
A tight fitting half face mask air purifying respirator with organic vapours, Class 2 gas filters and
particle filters with >95 % efficiency, which is validated at ISO work rate 1 with a total inward leakage
of <5,0 %. The example in Table B.5 includes individual particle and gas filters.
Table B.5 — Example E
Performance Class
Protection class PC2
Work rate W1
Respiratory Interface bT
Particle filter class F2 w1
Gas filter type/class OV2 w1
ISO RPD classification and marking: PC2 W1 bT F2 OV2
B.1.6 Example F
Particle filter with >99,99 % efficiency and a standardized connector tested and validated at the work
rate given in the information supplied by the RPD manufacturer, ISO work rate 2. See Table B.6.
NOTE Filters and respiratory interfaces using a connector in accordance with ISO 17420-3, include the
marking by this symbol (⊚).
16 PROOF/ÉPREUVE © ISO 2016 – All rights reserved
Table B.6 — Example F
Performance Class
Particle filter class F5 w2
ISO filter marking: ⊚ F5 w2
B.1.7 Example G
Replaceable gas filter organic vapours, class 3 without a standardized connector tested and validated at
the work rate given in the information supplied by the RPD manufacturer, ISO work rate 2. See Table B.7.
Table B.7 — Example G
Performance Class
Gas filter class OV3 w2
ISO filter marking: OV3 w2
B.1.8 Example H
Combination filter with >99 % efficiency particle filter and a basic gas filter, class 2, with a standardized
connector tested and validated at the work rate given in the information supplied by the RPD
manufacturer, ISO work rate 1. See Table B.8.
Table B.8 — Example H
Performance Class
Combination filter class F3 BC2 w1
Combination filter marking: ⊚ F3 BC2 w1
B.1.9 Example I
A tight fitting full face mask with a Standardized Connector tested and validated for ISO work rate 2
having an inward leakage of <0,01 %. See Table B.9.
Table B.9 — Example I
Performance Class
Protection class PC5
Work rate W2
Respiratory interface cT
Full face mask class PC5 W1 cT
Full face mask marking: ⊚ PC5 W2 cT
B.1.10 Example J
A tight-fitting full face mask air purifying respirator with standardized connector and organic vapours,
acidic gas, basic gas, class 3 and particle filters with >99,99 % efficiency, which is validated at ISO work
rate 2 with a total inward leakage of <0,1 %. Since the respiratory interface and filter with standardized
connector shall be marked with their classification and this symbol (⊚) for standardized connector, it
is included and precedes the filter classification mark. See Table B.10.
Table B.10 — Example J
Basic Performance Characteristic Class
Protection class PC4
Work rate W2
Respiratory Interface cT
Combination Filter Class F5 OV3 AC3 BC3 w2
ISO RPD classification: PC4 W2 cT F5 OV3 AC3 BC3
ISO Respiratory Interface marking: ⊚ PC4 W2 cT
ISO Filter marking: ⊚ F5 OV3 AC3 BC3 w2
B.1.11 Example K
Supplied airline continuous flow with respiratory interface (loose fitting, more than head covering, up
to complete body, a suit) with combination filter organic vapour, acidic gas class 2 and >95 % particle
filter validated at ISO work rate 1 and an inward leakage <0,001 % in the supplied air mode and <0,1 %
in the filtering mode. See Table B.11.
Table B.11 — Example K
Basic Performance Characteristic Breathable gas supply Class Filtering Class
Protection class PC6 PC4
Work rate W1 W1
Respiratory Interface eL eL
Supplied breathable gas capacity SY —
Combination Filter — F2 OV2 AC2 w1
ISO RPD classification and marking: PC6 W1 eL SY / PC4 W1 eL F2 OV2 AC2
B.1.12 Example L
A general escape hood (respirator interface tight fitting, 20 min duration, with combination filter for
Organic Vapours, Acidic gases, Carbon monoxide, hydrogen cyanide gas filter, all class 1 and >95 %
efficient particle filter with a total inward leakage of <5 % validated at a ISO work rate 1. See Table B.12.
Table B.12 — Example L
Basic Performance Characteristic Class
Protection class PC2
Work rate W1
Respiratory interface dT
Combination Filter F2 OV1 AC1 HCN1 CO20 w1
Special application - Escape ES20
ISO RPD classification and marking: PC2 W1 dT F2 OV1 AC1 HCN1 CO20 ES20
B.1.13 Example M
A tight-fitting full face mask combined device for general escape including a supplied airline validated
at ISO work rate 4 and an inward leakage <0,001 % with a 5 min escape cylinder. See Table B.13.
18 PROOF/ÉPREUVE © ISO 2016 – All rights reserved
Table B.13 — Example M
Basic Performance Characteristic Breathable gas supply class Escape class
Protection class PC6 PC6
Work rate W4 W1
Respiratory interface cT cT
Supplied breathable gas capacity SY
Special application - Escape - ES5
ISO RPD classification and marking: PC6 W4 cT SY/PC6 W1 cT ES5
B.1.14 Example N
An escape device with respiratory interface (tight fitting hood) for marine escape a duration of 15 min
(validated at ISO work rate 1), having a total inward leakage of <0,01 % and validated at ISO work rate 2.
See Table B.14.
Table B.14 — Example P
Basic Performance Characteristic Breathable gas supply class
Protection class PC5
Work rate W2
Respiratory interface dT
Special application - Escape Marine ES MA15
ISO RPD classification and marking: PC5 W2 dT ES MA15
B.1.15 Example O
A mouth bit escape device for mining escape with a duration of 180 min validated at ISO work rate 2,
having a total inward leakage of <0,01 % See Table B.15.
Table B.15 — Example O
Basic Performance Characteristic Class
Protection class PC5
Work rate W2
Respiratory Interface aT
Gas filter CO180
Special application -Escape mining ES MN180
ISO RPD classification and marking: PC5 W2 aT CO180 ES MN180
Examples B.1.16 and B.1.17 are typical of the information that a manufacturer may provide with RPD or
with RPD components in case of multiple configurations.
B.1.16 Example P — Number of assisted filtering RPD using various respiratory
interfaces and various filters
20 PROOF/ÉPREUVE © ISO 2016 – All rights reserved
Table B.16 — Configuration matrix assisted filtering RPD
CONFIGURATION MATRIX ASSISTED FILTERING RPD
1 2 3 4 5 6 9
OP-
SELECTA- TION-
COMBINA-
BLE COM- BASIC UNIT RESPIRATORY INTERFACES (RI) PARTICLE FILTERS GAS FILTERS HOSES AL
TION FILTERS
PONENT ACCES-
SORIES
Hood
Turbo Turbo
HM FFM Helmet TF F4 EPDM- IIR-
Blow- Blow- HM FFM AC2 EPDM- IIR-
DESCRIP- 3300 3500 LF 5000 AC2 Hose Hose Pre-fil-
er A er B 3300 3300 F2 F3 F4 OV3 OV3 F4OV3 Hose Hose
a
TION medi- medi- 3100 fit for OV3 Hel- Hel- ter
(400 l/ (200 l/ small large AC3 RI Hood
um um small all AC2 met met
min) min)
sizes
234 234 234 234 234 234 234 234 234 234 234 234 234 234 234 234 234 234 234 234
Identifica-
b
Classification 570 570 567 567 568 568 568 568 569 569 569 568 568 568 568 569 570 570 570 570
a
tion No.
3 4 8 9 0 1 2 3 5 6 7 4 5 7 6 9 0 1 2 7
PC2 W4 bT F2 X X X X X
PC2 W4 cT F2
X X X X X
PC3 W4 bT F3 X X X X X X
PC3 W4 cT F3
X X X X X X
PC2 W4 dL F2 X X X X X X X
PC2 W4 dL F3
X X X X X X X X
PC5 W2 cT F4 X X X X X
PC3 W4 bT F4 X X X X X
PC5 W2 cT OV3 X X X X X
PC4 W2 cT OV3 X X X X X X X X
PC4 W2 dL OV3 X X X X X X X
PC3 W2 bT OV3 X X X X X X X X
PC3 W2 cT OV3 X X X X X X X X
PC3 W2 dL OV3 X X X X X X X X
PC4 W3 F4 OV3 X X X X X X
PC4 W2 F4 OV3 X X X X X X X
PC3
...
TECHNICAL ISO/TS
SPECIFICATION 16973
First edition
2016-04-01
Respiratory protective devices —
Classification for respiratory
protective device (RPD), excluding
RPD for underwater application
Appareils de protection respiratoire — Classification pour les APR, à
l’exclusion des APR pour application sous-marine
Reference number
©
ISO 2016
© ISO 2016, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
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ii © ISO 2016 – All rights reserved
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Mode of operation . 1
5 Protection classes (PC) . 2
6 Work rate . 2
7 Respiratory interface class . 3
8 Supplied breathable gas RPD capacity class . 3
9 Filter class. 3
9.1 Particle filter class . 3
9.1.1 Particle filter efficiency . 3
9.1.2 Particle filter work rate class . 4
9.2 Gas filter class . 4
9.2.1 General. 4
9.2.2 Gas filter capacity . 4
9.2.3 Gas filter work rate class . 5
10 RPD using standardized connector . 5
11 Special application class . 5
11.1 General . 5
11.2 Firefighting class . 6
11.3 Chemical, biological, radiological and nuclear class . 6
11.4 Marine class . 6
11.5 Mining class . 6
11.6 Abrasive blasting class . 7
11.7 Welding class . 7
11.8 Escape class . 7
12 Sequence of marking information . 8
12.1 Sequence of marking-supplied breathable gas RPD . 8
12.2 Sequence of marking-filtering RPD . 8
12.3 Sequence of marking-filter . 9
12.4 Sequence of marking-respiratory interface using standardized connector. 9
12.5 Sequence of marking-filters using standardized connector . 9
Annex A (normative) Classification and related marking scheme overview .10
Annex B (informative) Examples for ISO classification and related marking.15
Annex C (informative) Special applications .24
Annex D (informative) Work rate class .26
Annex E (informative) Respiratory interface class .28
Bibliography .30
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information.
ISO/TS 16973 was prepared by Technical Committee ISO/TC 94, Personal safety — Protective clothing
and equipment, Subcommittee SC 15, Respiratory protective devices.
iv © ISO 2016 – All rights reserved
Introduction
This Technical Specification contains the classification of Respiratory Protective Devices (RPD) and the
related marking in accordance with the requirements of the performance standards.
The basic classification, which applies to all RPD, will be marked in the following order:
a) protection class;
b) work rate class;
c) respiratory interface class.
Some examples for marking of commonly known RPD are included in Annex B.
For Supplied Breathable Gas RPD, the classification also includes gas capacity class.
For Filtering RPD, the classification also includes a particle filter class and/or the gas filter types and
classes.
RPD designated to be used for Special Applications are further classified accordingly.
The special applications identified are
— Firefighting,
— Chemical, Biological, Radiological and Nuclear (CBRN),
— Marine,
— Mining,
— Abrasive blasting,
— Welding, and
— Escape.
Each RPD will have an individual classification based on its performance specified in the relevant
performance standards.
Explanations of the classification and examples of the classification of RPD are given in the Annexes.
The following definitions apply in understanding how to implement an ISO International Standard and
other normative ISO deliverables (TS, PAS, IWA):
— “shall” indicates a requirement;
— “should” indicates a recommendation;
— “may” is used to indicate that something is permitted;
— “can” is used to indicate that something is possible, for example, that an organization or individual
is able to do something.
3.3.1 of the ISO/IEC Directives, Part 2 (sixth edition, 2011) defines a requirement as an “expression in
the content of a document conveying criteria to be fulfilled if compliance with the document is to be
claimed and from which no deviation is permitted.”
3.3.2 of the ISO/IEC Directives, Part 2 (sixth edition, 2011) defines a recommendation as an “expression
in the content of a document conveying that among several possibilities one is recommended as
particularly suitable, without mentioning or excluding others, or that a certain course of action is
preferred but not necessarily required, or that (in the negative form) a certain possibility or course of
action is deprecated but not prohibited.”
vi © ISO 2016 – All rights reserved
TECHNICAL SPECIFICATION ISO/TS 16973:2016(E)
Respiratory protective devices — Classification for
respiratory protective device (RPD), excluding RPD for
underwater application
1 Scope
This Technical Specification specifies the classification of Respiratory Protective Devices based on
their performance. The performance requirements are given in the relevant performance standards.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 16900-1, Respiratory protective devices — Methods of test and test equipment — Part 1: Determination
of inward leakage
ISO 16900-3, Respiratory protective devices — Methods of test and test equipment — Part 3: Determination
of particle filter penetration
ISO 16900-12, Respiratory protective devices — Methods of test and test equipment — Part 12:
Determination of volume-averaged work of breathing and peak respiratory pressures
ISO 16972, Respiratory protective devices — Terms, definitions, graphical symbols and units of
measurement
ISO/TS 16976-1, Respiratory protective devices — Human factors — Part 1: Metabolic rates and respiratory
flow rates
ISO 17420-3, Respiratory protective devices — Performance requirements — Part 3: Thread connection
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 16972 apply.
4 Mode of operation
There are two modes of operation that RPD may employ to supply breathable gas to the wearer. These
modes are specified in Table 1.
Table 1 — Mode of operation
Mode of operation Means of providing breathable gas to the wearer Typical examples of RPD
The RPD supplies the wearer with breathable gas Compressed airline breath-
Breathable gas supply from a remote supply of breathable gas or from ing apparatus, self-contained
breathable gas stored in, or regenerated by, the RPD. breathing apparatus (SCBA)
The RPD removes gases, vapours and/or particles
Half mask with gas filter(s)
from the ambient air depending on the air-purifying
Filtration
element (filter) used. These can be assisted or unas-
Filtering facepiece
sisted devices.
Combined RPD are devices which have both filtration and breathable gas supply modes. Combined RPD
can have different classes depending on the operating method being used. An example will be an RPD
which can operate as a compressed airline breathing apparatus and has an auxiliary filter.
Multi-functional RPD are RPD which have different methods of operation within either filtration or
breathable gas supply modes.
Multi-functional RPD can have different classes depending on the operating method being used.
An example would be an RPD which can operate as a compressed airline breathing apparatus with an
auxiliary self-contained breathing apparatus. Another example is an assisted filtering RPD which can
operate as an unassisted filtering RPD when not powered.
The performance requirements for breathable gas supply RPD and filtering RPD are specified in the
relevant performance standards.
5 Protection classes (PC)
RPD shall be classified by Protection Class.
The Protection classes are derived from the results of a laboratory Total Inward Leakage (TIL) test in
accordance with ISO 16900-1 and the relevant performance standards. These classes are provided in
Table 2.
Table 2 — Protection classes
TIL
MAX
Protection Class
%
PC1 20
PC2 5
PC3 1
PC4 0,1
PC5 0,01
PC6 0,001
NOTE TIL is the ratio of the concentration of a test agent in the breathing zone inside the RPD compared
with the concentration outside the RPD, expressed as a percentage. This is the level of total inward leakage of
the RPD as measured in the laboratory under standard defined conditions. TIL levels used in RPD evaluation are
given in Table 2 and Figure A.1.
6 Work rate
RPD shall be classified by Work rate class, as determined by the RPD manufacturer. The Work rate
classes are derived from the results of a laboratory test, Work of breathing, and the related performance
requirement, in accordance with ISO 16900-12 and the relevant performance standards.
These classes are
— W4, which is equivalent to ISO/TS 16976-1 work class 8 (maximal),
— W3, which encompasses ISO/TS 16976-1 work classes 7 and 6 (extremely heavy and very-very heavy),
— W2 which encompasses ISO/TS 16976-1 work classes 5 and 4 (very heavy and heavy), and
— W1, which encompasses ISO/TS 16976-1 work classes 3, 2 and 1 (moderate and light).
For further information, see Annex D. RPD designated for special applications may have performance
requirements with minimum work rate classes.
2 © ISO 2016 – All rights reserved
7 Respiratory interface class
Respiratory interfaces shall be classified by coverage area [see Figure E.1, a) to e)].
Respiratory interfaces shall be further classified by type: tight fitting; those that form a seal with the
wearer’s skin, and loose fitting, those that have a partial seal or no seal with the skin of the wearer. See
Table 3, Figure A.1 and Figure E.1.
Table 3 — Respiratory interface classes
RI Class RI area Type
eL e - more than head, up to complete body L-Loose fitting
eT e - more than head, up to complete body T-Tight fitting
dL d - Head L-Loose fitting
dT d - Head T-Tight fitting
cL c - Face L-Loose fitting
cT c - Face T-Tight fitting
bL b - Nose and mouth L-Loose fitting
bT b - Nose and mouth T-Tight fitting
aL a - Mouth only L-Loose fitting
aT a - Mouth only T-Tight fitting
8 Supplied breathable gas RPD capacity class
Supplied breathable gas RPD that have a fixed volume of breathable gas (self-contained) shall be
classified by the volume of breathable gas available for respiration and shall be designated by the
letter “S” followed by the gas capacity in litres rounded down to increments of 150 l up to 900 l and
increments of 300 l above 900 l.
Supplied breathable gas RPD that have an external supply of breathable gas shall be classified and
marked “SY”.
Gas Capacity classification of these devices is shown in Table 4 and Figure A.2.
Table 4 — Supplied breathable gas capacity
Gas capacity
Class
l
Sxxxx Where xxxx is the available breathable gas volume for respiration
SY Air supply from an external source (air line supplied)
9 Filter class
9.1 Particle filter class
Particle filters shall be classified by their efficiency and work rate.
9.1.1 Particle filter efficiency
Five classes of particle filter efficiency are defined ranging from very low efficiency to extremely high
efficiency. Table 5 and Figure A.3 list the filter classes and their minimum filter efficiency as determined
in laboratory filter efficiency tests in accordance with ISO 16900-3 by testing at the relevant flowrate in
accordance with the work rate class.
Table 5 — Particle filter class
Particle filter efficiency
Class
%
F1 ≥80,00
F2 ≥95,00
F3 ≥99,00
F4 ≥99,90
F5 ≥99,99
9.1.2 Particle filter work rate class
Particle filters shall be additionally classified by work rate and are also marked with a lower case “w”
and the work rate class number, i.e. “w1”, “w2”, “w3” or “w4” after the efficiency and/or capacity class.
9.2 Gas filter class
9.2.1 General
A gas filter shall be classified by type (kind of gases), class (based on gas capacity) and work rate.
A given gas filter can be of one type only or a multiple type.
9.2.2 Gas filter capacity
A gas filter is classified by its capacity to remove the contaminants and is tested at different
concentrations depending on the class (1, 2, 3, and 4) and different flows depending on the work rate.
Some filters are for many contaminants within a category, e.g. organic vapours, and others for specific
gases or vapours, e.g. Arsine. Up to four capacity classes are defined depending on the filter type as
shown in Table 6, Table 7 and Figure A.3.
Table 6 — Gas filter types and classes
Type Classes Type description Typical contaminants
C H (Toluene)
7 8
OV 1, 2, 3 or 4 Organic vapour
C H (Cyclohexane)
6 12
C H O (Acetone)
3 6
Organic gas
OG 1 C H (Isobutane)
4 10
(low boiling, i.e. below 65 °C)
C H O (Dimethylether)
2 6
Cl (Chlorine)
H S (Hydrogen sulphide)
AC 1, 2, 3 or 4 Acidic compounds
HCl (Hydrogen chloride)
SO (Sulfur dioxide)
NH , (Ammonia)
BC 1, 2, 3 or 4 Basic compounds
CH NH (Methylamine)
3 2
NOX 1, 2, or 3 Nitrogen oxides NO (Nitrogen oxides)
x
4 © ISO 2016 – All rights reserved
Table 7 — Specific gas filter types and classes
Type Classes Gas or vapour
ND 1, 2 or 3 Nitrogen dioxide (NO )
HG 1, 2 or 3 Mercury (Hg)
OZ 1 Ozone (O )
HCN 1, 2, 3 or 4 Hydrogen Cyanide (HCN)
AH 1 Arsine (AsH )
HF 1, 2 or 3 Hydrogen fluoride (HF)
CD 1 Chlorine dioxide (ClO )
ETO 1 or 2 Ethylene oxide ((CH ) O)
2 2
FM 1, 2 or 3 Formaldehyde (CH O)
MB 1, 2 or 3 Methylbromide (CH Br)
Three classes based on time
CO Carbon monoxide (CO)
(20 min, 60 min or 180 min)
PH 1 or 2 Phosphine (PH )
9.2.3 Gas filter work rate class
Gas filters shall be additionally classified by work rate and are also marked with a lower case “w” and
the work rate class number, i.e. “w1”, “w2”, ”w3” or “w4”, after the efficiency and/or capacity class.
10 RPD using standardized connector
Some complete RPD include respiratory interfaces and filters with standardized connectors in
accordance with ISO 17420-3, to allow interchangeability. Limitations to classes apply as specified in
the relevant performance standard.
A respiratory interface and filter with standardized connector is marked with their classification, also
as specified in the relevant performance standard. The symbol for Standardized connector, ⊚, is added
to the marking. Filters with standardized connectors are validated for work rate class w1 or w2.
11 Special application class
11.1 General
Special applications specify different areas of RPD use with specific performance requirements.
Minimum Protection class (PC) and Work rate class (W) are set in accordance with the relevant
performance standards and are specified in 11.2 to 11.8. These classes shall be met in order to be
classified for the special application. Higher PC and W classes are not excluded.
Special applications include
— Firefighting,
— CBRN,
— Marine,
— Mining,
— Abrasive blasting,
— Welding, and
— Escape.
Special application devices are designated by alpha-numeric designation.
RPD to be used in special applications will be required to comply with additional performance
requirements (e.g. additional resistance to heat and flame for RPD intended for use in firefighting).
11.2 Firefighting class
RPD for Firefighting are designated by the respective RPD classifications followed by FF and the
numeric designation for specific firefighting application. These specific applications are wildland
firefighting, rescue, hazardous materials and structural firefighting. See Table 8 and Figure A.4.
Table 8 — Firefighting classes
Minimum Minimum work
Class Application
protection class rate class
a
FF5 Structural firefighting Type R2 PC5 W4
FF4 Structural firefighting Type R1 PC5 W3
FF3 Hazardous materials PC5 W3
FF2 Rescue PC4 W3
FF1 Wildland firefighting PC3 W2
a
Type R2 includes higher level of thermal exposure than Type R1 according to ISO 11999-1.
11.3 Chemical, biological, radiological and nuclear class
RPD for CBRN are designated by the respective RPD classifications followed by and the numeric
designation for specific CBRN application. See Table 9 and Figure A.4.
Table 9 — Chemical, biological, radiological and nuclear classes
Class Application Minimum protection class Minimum work rate class
CBRN 3 First on-scene responder PC5 W3
Responder
CBRN 2 PC5 W1
(known threat environment)
CBRN 1 Receiver/first receiver PC4 W1
11.4 Marine class
RPD for Marine are designated by the respective RPD classifications followed by MA and the numeric
designation for specific Marine application. These specific applications are firefighting and hazardous
materials. See Table 10 and Figure A.4.
Table 10 — Marine classes
Minimum protec- Minimum work
Class Application
tion class rate class
MA2 Marine firefighting W4
PC5
MA1 Hazardous materials W3
11.5 Mining class
RPD for Mining are designated by the respective RPD classifications followed by MN followed by the
numeric designation for specific Mining application. These specific applications are: Underground
non-explosive atmosphere, Underground explosive atmosphere and Firefighting. See Table 11 and
Figure A.4.
6 © ISO 2016 – All rights reserved
Table 11 — Mining classes
Minimum protection Minimum work
Class Application
class rate class
a
MN4 Mining Firefighting and Rescue Type R2 PC5 W4
MN3 Mining Firefighting and Rescue Type R1 PC4 W2
MN2 Underground mining explosive
PC1 W2
MN1 Underground mining non-explosive
a
Type R2 includes higher level of thermal exposure than Type R1 according to ISO 11999-1.
11.6 Abrasive blasting class
RPD for abrasive blasting are designated by the respective RPD classifications followed by AB followed
by the numeric designation for specific abrasive blasting application. Currently, only one numeric
designation has been identified. See Table 12 and Figure A.4.
Table 12 — Abrasive blasting class
Minimum protection Minimum work
Class Application
class rate class
AB Abrasive blasting PC3 W1
11.7 Welding class
RPD for welding are designated by the respective RPD classifications followed by WE. See Table 13 and
Figure A.4.
Table 13 — Welding class
Minimum protection Minimum work
Class Application
class rate class
WE Welding PC1 W1
11.8 Escape class
RPD for escape only are designated by the respective RPD classifications followed by ES and the specific
application and the duration in minutes. Escape RPD can be filtering or supplied breathable gas devices.
Escape general Filtering RPD are designated by ES followed the gas filter type, e.g. ES OV (t).
Escape general, supplied breathable gas RPD, are not designated for a specific contaminant. See
Table 14, Table 15 and Figure A.4.
Table 14 — Escape classes
Minimum
Minimum work
Class Application Duration protection
rate class
class
ES MN t Mining Escape
ES MA t Marine Escape
ES CBRN t CBRN Escape
b
t PC3 W1
ES FF t Escape from fire
a
ES XX t Escape general filtering RPD
ES t Escape general supplied breathable gas RPD
a
XX is the type of gas filter.
b
The “t” values in the table above are listed in Table 15.
Table 15 — Designated durations
“t” - Designated duration (minutes) Steps
5 to 30 (5, 10,15, 20, 25, 30) 5 min
30 to 60 (40, 50, 60) 10 min
60 to 120 (90, 120) 30 min
120 and above (180, 240…) 60 min
12 Sequence of marking information
12.1 Sequence of marking-supplied breathable gas RPD
The sequence of classification marking is as follows:
— protection class;
— work rate;
— respiratory interface;
— supplied breathable gas capacity;
— special application.
For examples of marking, see Annex B.
12.2 Sequence of marking-filtering RPD
The sequence of classification marking is as follows:
— protection class;
— work rate;
— respiratory interface;
— particle filter, if applicable;
— gas filter, if applicable;
— special application, if applicable.
For examples of marking, see Annex B.
8 © ISO 2016 – All rights reserved
12.3 Sequence of marking-filter
The sequence of classification marking is as follows:
— particle filter, if applicable;
— gas filter, if applicable;
— work rate in lower case w;
— special application, if applicable.
For examples of marking, see Annex B.
12.4 Sequence of marking-respiratory interface using standardized connector
The sequence of classification marking is as follows:
— standardized connector symbol;
— protection class;
— work rate;
— respiratory interface.
For examples of marking, see Annex B.
12.5 Sequ
...
SPÉCIFICATION ISO/TS
TECHNIQUE 16973
Première édition
2016-04-01
Appareils de protection
respiratoire — Classification pour
les APR, à l’exclusion des APR pour
application sous-marine
Respiratory protective devices — Classification for respiratory
protective device (RPD), excluding RPD for underwater application
Numéro de référence
©
ISO 2016
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2016, Publié en Suisse
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ii © ISO 2016 – Tous droits réservés
Sommaire Page
Avant-propos .iv
Introduction .v
1 Domaine d’application . 1
2 Références normatives . 1
3 Termes et définitions . 1
4 Mode de fonctionnement . 1
5 Classes de protection (PC) . 2
6 Rythme de travail . 3
7 Classe d’interface respiratoire . 3
8 Classe de capacité des APR alimentés en gaz respirable . 3
9 Classe de filtre . 4
9.1 Classe de filtre à particules . 4
9.1.1 Efficacité du filtre à particules . 4
9.1.2 Classe de rythme de travail des filtres à particules . 4
9.2 Classe de filtre anti-gaz . 4
9.2.1 Généralités . 4
9.2.2 Capacité des filtres anti-gaz . 4
9.2.3 Classe de rythme de travail des filtres anti-gaz . 5
10 APR utilisant un raccordement normalisé . 5
11 Classe des applications particulières. 6
11.1 Généralités . 6
11.2 Classe de lutte contre l’incendie . 6
11.3 Classe des risques chimiques, biologiques, radiologiques et nucléaires (CBRN) . 6
11.4 Classe maritime . 7
11.5 Classe d’applications minières . 7
11.6 Classe de projection d’abrasifs . 7
11.7 Classe de soudage . 8
11.8 Classe d’évacuation . 8
12 Séquence de marquage des informations . 8
12.1 Séquence de marquage des APR alimentés en gaz respirable . 8
12.2 Séquence de marquage des APR filtrants . 9
12.3 Séquence de marquage des filtres . 9
12.4 Séquence de marquage des interfaces respiratoires utilisant un raccordement normalisé 9
12.5 Séquence de marquage des filtres utilisant un raccordement normalisé . 9
Annexe A (normative) Présentation du schéma de classification et de marquage associé .11
Annexe B (informative) Exemples de classification ISO et marquage associé .16
Annexe C (informative) Applications particulières .25
Annexe D (informative) Classe de rythme de travail .27
Annexe E (informative) Classe d’interface respiratoire .29
Bibliographie .31
Avant-propos
L’ISO (Organisation internationale de normalisation) est une fédération mondiale d’organismes
nationaux de normalisation (comités membres de l’ISO). L’élaboration des Normes internationales est
en général confiée aux comités techniques de l’ISO. Chaque comité membre intéressé par une étude
a le droit de faire partie du comité technique créé à cet effet. Les organisations internationales,
gouvernementales et non gouvernementales, en liaison avec l’ISO, participent également aux travaux.
L’ISO collabore étroitement avec la Commission électrotechnique internationale (IEC) en ce qui
concerne la normalisation électrotechnique.
Les procédures utilisées pour élaborer le présent document et celles destinées à sa mise à jour sont
décrites dans les Directives ISO/IEC, Partie 1.Il convient, en particulier de prendre note des différents
critères d’approbation requis pour les différents types de documents ISO. Le présent document a été
rédigé conformément aux règles de rédaction données dans les Directives ISO/IEC, Partie 2 (voir www.
iso.org/directives).
L’attention est appelée sur le fait que certains des éléments du présent document peuvent faire l’objet de
droits de propriété intellectuelle ou de droits analogues. L’ISO ne saurait être tenue pour responsable
de ne pas avoir identifié de tels droits de propriété et averti de leur existence. Les détails concernant
les références aux droits de propriété intellectuelle ou autres droits analogues identifiés lors de
l’élaboration du document sont indiqués dans l’Introduction et/ou dans la liste des déclarations de
brevets reçues par l’ISO (voir www.iso.org/brevets).
Les appellations commerciales éventuellement mentionnées dans le présent document sont données
pour information, par souci de commodité, à l’intention des utilisateurs et ne sauraient constituer un
engagement.
Pour une explication de la signification des termes et expressions spécifiques de l’ISO liés à
l’évaluation de la conformité, ou pour toute information au sujet de l’adhésion de l’ISO aux principes
de l’OMC concernant les obstacles techniques au commerce (OTC), voir le lien suivant: Avant-propos —
Informations supplémentaires.
L’ISO/TS 16973 a été élaborée par le comité technique ISO/TC 94, Sécurité individuelle — Vêtements et
équipements de protection, sous-comité SC 15, Appareils de protection respiratoire.
iv © ISO 2016 – Tous droits réservés
Introduction
La présente Spécification technique contient la classification des appareils de protection respiratoire
(APR) et les marquages associés, conformément aux exigences des normes de performance.
La classification de base, qui s’applique à tous les APR, sera marquée dans l’ordre suivant:
a) classe de protection;
b) classe de rythme de travail;
c) classe d’interface respiratoire.
Quelques exemples de marquage d’APR généralement connus figurent dans l’Annexe B.
Pour les APR alimentés en gaz respirable, la classification couvre également une classe de capacité en gaz.
Pour les APR filtrants, la classification comprend également une classe de filtre à particules et/ou les
types et classes de filtres anti-gaz.
Les APR désignés pour des applications particulières sont également classés en conséquence.
Les applications particulières identifiées sont les suivantes:
— lutte contre l’incendie;
— applications chimiques, biologiques, radiologiques et nucléaires (CBRN);
— applications maritimes;
— applications minières;
— projection d’abrasifs;
— soudage; et
— évacuation.
Chaque APR aura une classification individuelle compte tenu de ses performances spécifiées dans les
normes de performance applicables.
Des explications et exemples de classifications des APR sont donnés en annexes.
Les définitions suivantes permettent de comprendre la manière dont les Normes internationales et les
autres documents normatifs ISO (Spécification technique, Spécification publiquement disponible ou
Accord international d’atelier) doivent être appliqués:
— le verbe «devoir» indique une exigence;
— l’expression «il convient de» indique une recommandation;
— en anglais, l’auxiliaire «may» («pouvoir» en français) est utilisé pour indiquer que quelque chose est
autorisé; et
— l’auxiliaire «can» (également « pouvoir » en français) est employé pour indiquer que quelque chose est
possible, par exemple, qu’une organisation ou qu’un individu est susceptible de faire quelque chose.
Le paragraphe 3.3.1 des Directives ISO/IEC, Partie 2 (sixième édition, 2011) définit une exigence comme
une «expression dans le contenu d’un document formulant les critères à respecter afin de prétendre à la
conformité avec le document, et avec lesquels aucun écart n’est permis».
Le paragraphe 3.3.2 des Directives ISO/IEC, Partie 2 (sixième édition, 2011) définit une recommandation
comme une «expression dans le contenu d’un document formulant qu’entre plusieurs possibilités, une
est particulièrement appropriée, sans pour autant mentionner ou exclure les autres, ou qu’une certaine
manière de faire est préférée sans être nécessairement exigée, ou encore (à la forme négative) qu’une
certaine possibilité ou manière de faire est déconseillée, mais non interdite».
vi © ISO 2016 – Tous droits réservés
SPÉCIFICATION TECHNIQUE ISO/TS 16973:2016(F)
Appareils de protection respiratoire — Classification pour
les APR, à l’exclusion des APR pour application sous-marine
1 Domaine d’application
La présente Spécification technique définit la classification des appareils de protection respiratoire
compte tenu de leurs performances. Les exigences de performances sont données dans les normes de
performance applicables.
2 Références normatives
Les documents ci-après, dans leur intégralité ou non, sont des références normatives indispensables à
l’application du présent document. Pour les références datées, seule l’édition citée s’applique. Pour les
références non datées, la dernière édition du document de référence s’applique (y compris les éventuels
amendements).
ISO 16900-1, Appareils de protection respiratoire — Méthodes d’essai et équipement d’essai — Partie 1:
Détermination des fuites vers l’intérieur.
ISO 16900-3, Appareils de protection respiratoire — Méthodes d’essai et équipement d’essai — Partie 3:
Détermination de la pénétration d’un filtre à particules.
ISO 16900-12, Appareils de protection respiratoire — Méthodes d’essai et équipement d’essai — Partie 12:
Détermination du travail respiratoire en fonction du volume respiratoire et des pics de pressions
respiratoires.
ISO 16972, Appareils de protection respiratoire — Termes, définitions, symboles graphiques et unités
de mesure.
ISO/TS 16976-1, Appareils de protection respiratoire — Facteurs humains — Partie 1: Métabolismes
énergétiques et régimes des débits respiratoires.
ISO 17420-3, Appareils de protection respiratoire — Exigences de performances — Partie 3: Raccord
normalisé.
3 Termes et définitions
Pour les besoins du présent document, les termes et définitions donnés dans l’ISO 16972 s’appliquent.
4 Mode de fonctionnement
Les APR peuvent employer deux modes de fonctionnement pour alimenter le porteur en gaz respirable.
Ces modes sont décrits dans le Tableau 1.
Tableau 1 — Mode de fonctionnement
Mode de fonctionne- Méthodes d’acheminement de gaz respirable
Exemples types d’APR
ment jusqu’au porteur
L’appareil de protection respiratoire (APR) alimente
Appareil respiratoire à adduc-
Alimentation en gaz le porteur en gaz respirable à partir d’une source
tion d’air comprimé, appareil
respirable d’alimentation distante ou grâce au gaz respirable
respiratoire autonome (ARA)
stocké ou régénéré par l’APR.
L’APR filtre les gaz, vapeurs et/ou particules conte-
Demi-masque avec filtre(s)
nus dans l’air ambiant en fonction de l’élément de
anti-gaz
Filtration
purification d’air (filtre) utilisé. Il peut s’agir d’appa-
Pièce faciale filtrante
reils assistés ou non assistés.
Les APR combinés sont des appareils pouvant fonctionner à la fois en mode filtrant et en mode
d’alimentation en gaz respirable. Les APR combinés peuvent être associés à différentes classes en
fonction du mode de fonctionnement utilisé. Par exemple: un APR muni d’un filtre auxiliaire et qui est
également capable de fonctionner comme un appareil respiratoire à adduction d’air comprimé.
Les APR multi-fonctionnels sont des APR présentant différentes méthodes de fonctionnement en mode
filtrant ou en mode d’alimentation en gaz respirable.
Les APR multi-fonctionnels peuvent être associés à différentes classes en fonction du mode de
fonctionnement utilisé.
Par exemple: un APR capable de fonctionner comme un appareil respiratoire à adduction d’air
comprimé avec un appareil respiratoire autonome auxiliaire. Ou encore: un APR filtrant assisté capable
de fonctionner comme un APR filtrant sans assistance (sans alimentation électrique).
Les exigences de performance des APR à alimentation en gaz respirable et des APR filtrants sont
spécifiées dans les normes de performance applicables.
5 Classes de protection (PC)
L’APR doit être catégorisé par sa classe de protection.
Les classes de protection sont dérivées des résultats d’un essai de fuite totale vers l’intérieur en
laboratoire, conformément à l’ISO 16900-1 et aux normes de performance applicables. Ces classes sont
décrites dans le Tableau 2.
Tableau 2 — Classes de protection
TILMAX
Classe de protection
%
PC1 20
PC2 5
PC3 1
PC4 0,1
PC5 0,01
PC6 0,001
NOTE La fuite totale vers l’intérieur (ou TIL) représente le ratio de concentration d’un agent d’essai dans la
zone respiratoire par rapport à la concentration à l’extérieur de l’APR, exprimé en pourcentage. Il s’agit du niveau
de fuite totale vers l’intérieur de l’APR mesuré en laboratoire dans des conditions normales définies. Les niveaux
TIL utilisés dans l’évaluation des APR sont donnés au Tableau 2 et dans la Figure A.1.
2 © ISO 2016 – Tous droits réservés
Tableau 2 (suite)
6 Rythme de travail
L’APR doit être classé par sa classe de rythme de travail, classe déterminée par le fabricant de l’APR.
Les classes de rythme de travail sont dérivées des résultats d’un essai en laboratoire sur le travail
respiratoire et des exigences de performances associées, conformément à l’ISO 16900-12 et aux normes
de performance applicables.
Ces classes sont:
— W4, qui équivaut à la classe de travail 8 (maximal) de l’ISO/TS 16976-1;
— W3, qui englobe les classes de travail 7 et 6 (extrêmement lourd et très très lourd) de l’ISO/TS 16976-1;
— W2 qui englobe les classes de travail 5 et 4 (très lourd et lourd) de l’ISO/TS 16976-1; et
— W1, qui englobe les classes de travail 3, 2 et 1 (modéré et léger) de l’ISO/TS 16976-1.
Pour toute information complémentaire, voir l’Annexe D. Les APR désignés pour des applications
particulières peuvent avoir des exigences de performances associées à des classes de rythme de travail
minimales.
7 Classe d’interface respiratoire
Les interfaces respiratoires doivent être classées par zone de couverture [voir Figure E.1, a) à e)].
Les interfaces respiratoires doivent être de plus classées par type: ajustement serré (qui confèrent
une étanchéité à la peau du porteur) et ajustement lâche (qui forment une jonction partielle ou qui ne
forment aucune jonction avec la peau du porteur). Voir Tableau 3, Figure A.1 et Figure E.1.
Tableau 3 — Classes d’interface respiratoire
Classe d’interface res-
Zone d’interface respiratoire Type
piratoire
eL e - plus que la tête, jusqu’à l’ensemble du corps L-Ajustement lâche
eT e - plus que la tête, jusqu’à l’ensemble du corps T-Ajustement serré
dL d - Tête L-Ajustement lâche
dT d - Tête T-Ajustement serré
cL c -Visage L-Ajustement lâche
cT c -Visage T-Ajustement serré
bL b - Nez et bouche L-Ajustement lâche
bT b - Nez et bouche T-Ajustement serré
aL a - Bouche uniquement L-Ajustement lâche
aT a - Bouche uniquement T-Ajustement serré
8 Classe de capacité des APR alimentés en gaz respirable
Les APR alimentés en gaz respirable disposant d’un volume fixe de gaz respirable (autonomes) doivent
être classés en fonction du volume de gaz respirable disponible. Ils doivent être désignés par la lettre
«S» suivie de la capacité en gaz, exprimée en litres et arrondie par incréments de 150 litres jusqu’à
900 litres et par incréments de 300 litres au-delà de 900 litres.
Les APR alimentés en gaz respirable disposant d’une source externe de gaz respirable doivent être
classés et marqués «SY».
La classification de capacité en gaz de ces appareils est indiquée au Tableau 4 et à la Figure A.2.
Tableau 4 — Capacité en gaz respirable fourni
Capacité en gaz
Classe
en litres
Sxxxx Où xxxx représente le volume de gaz respirable disponible
SY Alimentation en air provenant d’une source externe (à adduction d’air)
9 Classe de filtre
9.1 Classe de filtre à particules
Les filtres à particules doivent être classés par efficacité et par rythme de travail.
9.1.1 Efficacité du filtre à particules
On distingue cinq classes d’efficacité du filtre à particules, allant d’une très faible efficacité à une
efficacité extrêmement élevée. Le Tableau 5 et la Figure A.3 répertorient les classes de filtre et
l’efficacité minimale du filtre, telles que définies au cours des essais d’efficacité des filtres en laboratoire,
conformément à l’ISO 16900-3, au débit applicable compte tenu de la classe de rythme de travail.
Tableau 5 — Classe de filtre à particules
Efficacité du filtre à particules
Classe
%
F1 ≥ 80,00
F2 ≥ 95,00
F3 ≥ 99,00
F4 ≥ 99,90
F5 ≥ 99,99
9.1.2 Classe de rythme de travail des filtres à particules
Les filtres à particules doivent être, en outre, classés par rythme de travail et sont également marqués
par un «w» en lettre minuscule suivi du numéro de la classe de rythme de travail, à savoir «w1», «w2»,
«w3» ou «w4» à la suite de la classe d’efficacité et/ou de capacité.
9.2 Classe de filtre anti-gaz
9.2.1 Généralités
Les filtres anti-gaz doivent être classés par type (nature du gaz), par classe (en fonction de la capacité
en gaz) et par rythme de travail.
Un filtre anti-gaz peut être d’un ou plusieurs types.
9.2.2 Capacité des filtres anti-gaz
Un filtre anti-gaz est classé par sa capacité à éliminer les contaminants et est testé à différentes
concentrations en fonction de sa classe (1, 2, 3 et 4) et à différents débits en fonction de son rythme de
travail. Certains filtres couvrent de nombreux contaminants d’une même catégorie, par exemple les
vapeurs organiques, et d’autres des gaz ou vapeurs spécifiques tels que l’arsine. En fonction du type de
filtre, jusqu’à quatre classes de capacité sont définies (voir Tableau 6, Tableau 7 et Figure A.3).
4 © ISO 2016 – Tous droits réservés
Tableau 6 — Types et classes de filtres anti-gaz
Type Classes Description du type Contaminants types
C H (toluène)
7 8
OV 1, 2, 3 ou 4 Vapeur organique
C H (cyclohexane)
6 12
Gaz organique C H O (acétone)
3 6
OG 1 (faible point d’ébullition, C H (isobutane)
4 10
c’est-à-dire inférieur à 65 °C) C H O (éther diméthylique)
2 6
Cl (chlore)
H S (sulfure d’hydrogène)
AC 1, 2, 3 ou 4 Composés acides
HCl (chlorure d’hydrogène)
SO (dioxyde de soufre)
NH , (ammoniac)
BC 1, 2, 3 ou 4 Composés basiques
CH NH (méthylamine)
3 2
NOX 1, 2 ou 3 Oxydes d’azote NO (oxydes d’azote)
x
Tableau 7 — Types et classes spécifiques de filtres anti-gaz
Type Classes Gaz ou vapeur
ND 1, 2 ou 3 Dioxyde d’azote (NO )
HG 1, 2 ou 3 Mercure (Hg)
OZ 1 Ozone (O )
HCN 1, 2, 3 ou 4 Acide cyanhydrique (HCN)
AH 1 Arsine (AsH )
HF 1, 2 ou 3 Fluorure d’hydrogène (HF)
CD 1 Dioxyde de chlore (ClO )
ETO 1 ou 2 Oxyde d’éthylène ((CH ) O)
2 2
FM 1, 2 ou 3 Formaldéhyde (CH O)
MB 1, 2 ou 3 Bromure de méthyle (CH Br)
Trois classes en fonction du temps (20 min,
CO Monoxyde de carbone (CO)
60 min ou 180 min)
PH 1 ou 2 Phosphine (PH )
9.2.3 Classe de rythme de travail des filtres anti-gaz
Les filtres anti-gaz doivent être, en outre, classés par rythme de travail et sont également marqués par
un «w» en lettre minuscule suivi du numéro de la classe de rythme de travail, à savoir «w1», «w2»,
«w3» ou «w4» à la suite de la classe d’efficacité et/ou de capacité.
10 APR utilisant un raccordement normalisé
Pour faciliter l’interchangeabilité, certains APR comprennent des interfaces respiratoires et des filtres
avec des raccordements normalisés conformément à l’ISO 17420-3. Les classes sont soumises aux
restrictions spécifiées dans la norme de performance adéquate.
Une interface respiratoire et un filtre avec raccordement normalisé sont marqués par leur
classification, également spécifiée dans la norme de performance adéquate. Le symbole correspondant
au raccordement normalisé, ⊚, est ajouté au marquage. Les filtres à raccordements normalisés sont
validés pour la classe de rythme de travail w1 ou w2.
11 Classe des applications particulières
11.1 Généralités
Les applications particulières spécifient différentes zones d’utilisation des APR associées à des
exigences de performances distinctes. Les classe de protection (PC) et classe de rythme de travail (W)
minimales sont établies conformément aux normes de performance adéquates, et sont spécifiées aux
paragraphes 11.2 à 11.8. Ces classes doivent être satisfaites pour obtenir la classification correspondant
à l’application particulière. Les classes PC et W supérieures ne sont pas exclues.
Les applications particulières incluent:
— lutte contre l’incendie;
— CBRN;
— applications maritimes;
— applications minières;
— projection d’abrasifs;
— soudage; et
— évacuation.
Les appareils pour applications particulières sont référencés par leur désignation alphanumérique.
Les APR destinés aux applications particulières devront satisfaire aux exigences de performances
supplémentaires (par exemple, résistance supplémentaire à la chaleur et aux flammes pour les APR
destinés à la lutte contre l’incendie).
11.2 Classe de lutte contre l’incendie
Les APR de lutte contre l’incendie sont désignés par les classifications d’APR respectives suivies des
lettres FF et de la désignation numérique correspondant à une application de lutte contre l’incendie
spécifique, à savoir: lutte contre les feux de forêt, sauvetage, matières dangereuses et lutte contre les
feux de bâtiment. Voir Tableau 8 et Figure A.4.
Tableau 8 — Classes de lutte contre l’incendie
Classe de protection Classe de rythme de
Classe Application
minimale travail minimale
a
FF5 Lutte contre les feux de bâtiment type R2 PC5 W4
FF4 Lutte contre les feux de bâtiment type R1 PC5 W3
FF3 Matières dangereuses PC5 W3
FF2 Sauvetage PC4 W3
FF1 Lutte contre les feux de forêt PC3 W2
a
Le type R2 inclut un niveau d’exposition thermique supérieur à celui du type R1 conformément à l’ISO 11999-1.
11.3 Classe des risques chimiques, biologiques, radiologiques et nucléaires (CBRN)
Les APR destinés aux applications CBRN sont désignés par les classifications d’APR respectives suivies
des lettres CBRN et de la désignation numérique correspondant à l’application CBRN spécifique. Voir
Tableau 9 et Figure A.4.
6 © ISO 2016 – Tous droits réservés
Tableau 9 — Classes des applications chimiques, biologiques, radiologiques et nucléaires (CBRN)
Classe de protection Classe de rythme de
Classe Application
minimale travail minimale
CBRN 3 1er intervenant sur les lieux PC5 W3
Intervenant
CBRN 2 PC5 W1
(contexte de menace connu)
CBRN 1 Destinataire/1er destinataire PC4 W1
11.4 Classe maritime
Les APR destinés aux applications maritimes sont désignés par les classifications d’APR respectives
suivies des lettres MA et de la désignation numérique correspondant à une application maritime
spécifique, à savoir: lutte contre l’incendie et matières dangereuses. Voir Tableau 10 et Figure A.4.
Tableau 10 — Classes maritimes
Classe de protection Classe de rythme de
Classe Application
minimale travail minimale
MA2 Lutte contre les incendies maritimes W4
PC5
MA1 Matières dangereuses W3
11.5 Classe d’applications minières
Les APR destinés aux applications minières sont désignés par les classifications d’APR respectives
suivies des lettres MN et de la désignation numérique correspondant à une application minière
spécifique, à savoir: atmosphère souterraine non explosive, atmosphère souterraine explosive et lutte
contre l’incendie. Voir Tableau 11 et Figure A.4.
Tableau 11 — Classes d’applications minières
Classe de protection Classe de rythme de
Classe Application
minimale travail minimale
Lutte contre les incendies miniers et sauve-
MN4 PC5 W4
a
tage type R2
Lutte contre les incendies miniers et sauve-
MN3 PC4 W2
tage type R1
Atmosphères explosives de mines souter-
MN2
raines
PC1 W2
Atmosphères non explosives de mines
MN1
souterraines
a
Le type R2 inclut un niveau d’exposition thermique supérieur à celui du type R1 conformément à l’ISO 11999-1.
11.6 Classe de projection d’abrasifs
Les APR destinés à la projection d’abrasifs sont désignés par les classifications d’APR respectives suivies
des lettres AB et de la désignation numérique correspondant à une application de projection d’abrasifs
spécifique. À ce jour, une seule désignation numérique a été identifiée. Voir Tableau 12 et Figure A.4.
Tableau 12 — Classe de projection d’abrasifs
Classe de protection Classe de rythme de
Classe Application
minimale travail minimale
AB Projection d’abrasifs PC3 W1
11.7 Classe de soudage
Les APR destinés au soudage sont désignés par les classifications d’APR respectives suivies des lettres
WE. Voir Tableau 13 et Figure A.4.
Tableau 13 — Classe de soudage
Classe de protection Classe de rythme de
Classe Application
minimale travail minimale
WE Soudage PC1 W1
11.8 Classe d’évacuation
Les APR destinés uniquement à l’évacuation sont désignés par les classifications d’APR respectives
suivies des lettres ES, de l’application spécifique et de la durée en minutes. Les APR d’évacuation
peuvent être de type filtrants ou alimentés en gaz respirable.
Les APR filtrants d’évacuation générale sont désignés par les lettres ES suivies du type de filtre anti-
gaz, par exemple ES OV (t).
Les APR d’évacuation générale alimentés en gaz respirable ne sont pas désignés pour un contaminant
spécifique. Voir Tableau 14, Tableau 15 et Figure A.4.
Tableau 14 — Classes d’évacuation
Classe de Classe de rythme
Classe Application Durée protection de travail mini-
minimale male
ES MN t Évacuation d’environnements miniers
ES MA t Évacuation en environnements maritimes
ES CBRN t Évacuation en environnements CBRN
b
t PC3 W1
ES FF t Évacuation de lieux d’incendie
a
ES XX t APR filtrants d’évacuation générale
APR d’évacuation générale alimentés en gaz
ES t
respirable
a
XX désigne le type de filtre anti-gaz.
b
Les valeurs «t» du tableau ci-dessus sont répertoriées dans le Tableau 15.
Tableau 15 — Durées désignées
«t» - Durée désignée (en minutes) Paliers
5 à 30 (5, 10, 15, 20, 25, 30) 5 min
30 à 60 (40, 50, 60) 10 min
60 à 120 (90, 120) 30 min
120 et plus (180, 240, .) 60 min
12 Séquence de marquage des informations
12.1 Séquence de marquage des APR alimentés en gaz respirable
La séquence de marquage de classification est la suivante:
— classe de protection;
— rythme de travail;
8 © ISO 2016 – Tous droits réservés
— interface respiratoire;
— capacité en gaz respirable fourni;
— application particulière.
Voir les exemples de marquage à l’Annexe B.
12.2 Séquence de marquage des APR filtrants
La séquence de marquage de classification est la suivante:
— classe de protection;
— rythme de travail;
— interface respiratoire;
— filtre à particules, le cas échéant;
— filtre anti-gaz, le cas échéant;
— application particulière, le cas échéant.
Voir les exemples de marquage à l’Annexe B.
12.3 Séquence de marquage des filtres
La séquence de marquage de classification est la suivante:
— filtre à particules, le cas échéant;
— filtre anti-gaz, le cas échéant;
— rythme de travail avec la lettre w en minuscule;
— application particulière, le cas échéant.
Voir les exemples de marquage à l’Annexe B.
12.4 Séquence de marquage des interfaces respiratoires uti
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