ISO 21942:2019

INTERNATIONAL ISO
STANDARD 21942
First edition
2019-11
Station uniform for firefighters
Tenue de travail pour les pompiers
Reference number
©
ISO 2019
© ISO 2019
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ii © ISO 2019 – All rights reserved

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 General and design requirements . 3
4.1 General . 3
4.2 Innocuousness . 3
4.3 Station uniform . 3
5 Sampling and pre-treatment . 4
5.1 Sampling . 4
5.2 Pre-treatment . 4
5.3 Conditioning . 5
6 General performance requirements . 5
6.1 General . 5
6.2 Limited flame spread . 6
6.2.1 General. 6
6.2.2 Testing in accordance with ISO 15025, Procedure A . 6
6.3 Heat resistance . 7
6.3.1 Heat resistance at a temperature of (180 + 5/−0) °C . 7
6.3.2 Heat resistance at a temperature of (260 + 5/−0) °C (optional) . 7
6.4 Heat transmission performance requirements (required for level 2 only) . 7
6.4.1 Convective heat . 7
6.4.2 Radiant heat . 7
6.5 Dimensional change of textile materials . 7
6.6 Physical requirements . 8
6.6.1 Tensile strength of woven materials . 8
6.6.2 Tear strength of woven materials. 8
6.6.3 Bursting strength of knitted materials . 8
6.6.4 Structural seam strength . 8
6.6.5 Abrasion resistance (optional) . 8
6.7 Ergonomic and comfort requirements . 8
6.7.1 Thermal resistance . 8
6.7.2 Water vapour resistance . 8
6.8 Electrostatic resistance (optional) . 9
6.9 Colour fastness (optional) . 9
7 Marking . 9
8 Information supplied by the manufacturer . 9
Annex A (informative) Risk assessment .10
Bibliography .11
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
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ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
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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).
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iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 94, Personal safety — Personal protective
clothing , Subcommittee SC 14, Firefighters' personal equipment.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2019 – All rights reserved

Introduction
This document provides two levels of performance requirements for station uniforms that may be
provided by agencies that should be worn under primary protection garments compliant with the
relevant standards.
Level 1 is intended to provide limited protection and minimise harm through no melt and no drip
performance of materials, when exposed to accidental heat or flame.
Level 2 is intended to provide minimum protection in case of flame impingement or heat exposure.
The level 2 garment can also be combined with additional garments to contribute to the primary
protection, such as turn-out-gear described in ISO 11999-3. In this case, level 2 will fulfil the minimum
heat and flame requirements of this document and the level 2 garment in combination with additional
layers will fulfil the requirements of the specific primary protection garment for the specific higher
level standard (e.g. turn out gear standards, wildland).
Station uniforms are intended to provide the highest comfort possible through the use of materials that
meet required performance requirements and ergonomics of design.
This document is largely based on ISO 11612, which has been frequently used as a basis to develop and
specify station wear.
Attention is drawn to ISO/TR 21808, which sets out guidelines for selection, use, care, and maintenance
of protective clothing against heat and flame for firefighters.
The level of protection required should be determined using a risk assessment process (see Annex A).
INTERNATIONAL STANDARD ISO 21942:2019(E)
Station uniform for firefighters
1 Scope
This document sets out minimum performance requirements for station uniforms for firefighters that
are provided by agencies to be worn under primary protective garments compliant with the relevant
standards.
NOTE A station uniform, as defined by this document, is understood to not be a formal uniform or parade
uniform, which are not likely to be worn under primary protective firefighting garments.
Garments developed in accordance with this document complement the performance built into primary
protection firefighting garments in terms of minimising impact on hindrance, metabolic heat and
comfort.
This document specifies two levels of requirements for station uniforms:
— Level 1 specifies minimum no melting nor dripping requirements that provide no additional
protection but ensure the firefighter is not harmed by the melting of station uniform materials in
cases where heat or flames impinge the station uniform.
— Level 2 specifies heat and flame requirements to provide minimum protection. It can be combined
with additional layers or garments to meet the requirements of a standard for a specific primary
protection garment, this combination should provide improved protection and comfort.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 105-B02, Textiles — Tests for colour fastness — Part B02: Colour fastness to artificial light: Xenon arc
fading lamp test
ISO 105-C06, Textiles — Tests for colour fastness — Part C06: Colour fastness to domestic and commercial
laundering
ISO 105-D01, Textiles — Tests for colour fastness — Part D01: Colour fastness to drycleaning using
perchloroethylene solvent
ISO 105-E04, Textiles — Tests for colour fastness — Part E04: Colour fastness to perspiration
ISO 105-X12, Textiles — Tests for colour fastness — Part X12: Colour fastness to rubbing
ISO 3175-2, Textiles — Professional care, drycleaning and wetcleaning of fabrics and garments — Part 2:
Procedure for testing performance when cleaning an
...