PPE ensembles for firefighters undertaking specific rescue activities

ISO 18639-6:2018 provides the principles that govern the development of incident type and/or hazard specific test methods and minimum performance requirements for safety footwear for firefighters while engaged in specific rescue activities. Footwear related to specific rescue activities, e.g. Road Traffic Crash, (RTC) and Urban Search and Rescue, (USAR) is documented in individual subclauses of this document. NOTE For further guidance refer ISO 18639‑1. The purpose of ISO 18639-6:2018 is to ensure minimum performance requirements for incident type and/or hazard specific safety footwear are designated. ISO 18639-6:2018 covers general footwear design, the minimum performance level of the materials used and the methods of test for determining this performance level. ISO 18639-6:2018 does not cover special footwear for use in other high risk situations such as structural firefighting. ISO 18639-6:2018 does not cover protection for the head, torso, arms, hands and legs or protection of the feet against other hazards, e.g. chemical, biological, radiation and electrical hazards, except for limited, accidental exposure to fire ground chemicals and contaminated blood or body fluids. Selection of the appropriate system of Personal Protective Equipment, (PPE), including footwear, is dependent on carrying out an effective risk assessment which identifies the hazard to be faced, evaluates the likelihood of those hazards and provides the means of reducing or eliminating these hazards.

Équipements de protection personnelle pour pompiers entreprenant des activités de sauvetage particulières

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Status
Published
Publication Date
04-Jan-2018
Current Stage
6060 - International Standard published
Start Date
07-Dec-2017
Completion Date
05-Jan-2018
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INTERNATIONAL ISO
STANDARD 18639-6
First edition
2018-01
PPE ensembles for firefighters
undertaking specific rescue
activities —
Part 6:
Footwear
Équipements de protection personnelle pour pompiers entreprenant
des activités de sauvetage particulières —
Partie 6: Chaussures
Reference number
ISO 18639-6:2018(E)
ISO 2018
---------------------- Page: 1 ----------------------
ISO 18639-6:2018(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2018, 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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written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of

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ii © ISO 2018 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 18639-6:2018(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 2

4 Classification and designs ........................................................................................................................................................................... 2

5 Sampling and conditioning ........................................................................................................................................................................ 4

5.1 Sampling ....................................................................................................................................................................................................... 4

5.2 Conditioning .............................................................................................................................................................................................. 4

6 Performance requirements ....................................................................................................................................................................... 4

6.1 General ........................................................................................................................................................................................................... 4

6.2 Summary of requirements and classification of specific rescue activities .......................................... 4

6.3 Thermal requirements ..................................................................................................................................................................... 6

6.3.1 Insulation against heat ............................................................................................................................................... 6

6.3.2 Flame resistance .............................................................................................................................................................. 7

6.4 Mechanical protection requirements .................................................................................................................................. 8

6.4.1 Cut resistance by a hand-held chainsaw ..................................................................................................... 8

6.4.2 Metatarsal Protection .................................................................................................................................................. 8

6.4.3 Ankle Protection ............................................................................................................................................................... 8

6.5 Environmental protection requirements ......................................................................................................................... 8

6.5.1 Water resistance .................. .................................................... ......................................................................................... 8

6.5.2 Electrical properties ..................................................................................................................................................... 8

6.6 Visibility requirements .................................................................................................................................................................... 8

6.7 Biological and chemical requirements ............................................................................................................................... 9

6.7.1 Liquid penetration resistance .............................................................................................................................. 9

7 Marking .......................................................................................................................................................................................................................... 9

8 Information to be supplied ........................................................................................................................................................................ 9

8.1 General ........................................................................................................................................................................................................... 9

8.2 Antistatic footwear ...........................................................................................................................................................................10

8.3 Electrically insulating footwear ............................................................................................................................................11

8.4 Insocks ........................................................................................................................................................................................................11

8.5 Information regarding penetration resistant insert ............................................................................................11

Annex A (normative) Assessment of the footwear by the laboratory during testing for

resistance to heat and flame .................................................................................................................................................................12

Annex B (informative) Assessment of the footwear by the wearer ...................................................................................13

Annex C (informative) The following drawing can be provided with the user information to

assist in assessing the performance of firefighter footwear ................................................................................14

Annex D (informative) Slip resistance .............................................................................................................................................................15

Bibliography .............................................................................................................................................................................................................................18

© ISO 2018 – All rights reserved iii
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ISO 18639-6:2018(E)
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 voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following

URL: www.iso.org/iso/foreword.html.

This document was prepared by Technical Committee ISO/TC 94, Personal safety — Protective clothing

and equipment, Subcommittee SC 14, Fire-fighters' personal equipment.
A list of all the parts in the ISO 18639 series can be found on the ISO website.
iv © ISO 2018 – All rights reserved
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ISO 18639-6:2018(E)
Introduction

ISO 18639 is a series of standards for Personal Protective Equipment (PPE) for firefighters when

engaged in specific rescue activities. It is not possible to provide a standard for PPE to cover all of the

diverse range of rescue scenarios that firefighters are likely to encounter so it is important that risk

assessments are undertaken to determine if the PPE covered by ISO 18639 is suitable for its intended

use and the expected exposure to hazards. For complete protection against exposures, the risk

assessment should include protection of the whole body including the torso, arms and legs, head, face,

hands and feet.

For certain rescue activities, safety ropes and harnesses can be required. For certain rescue situations,

special PPE for use in and on water can be required. In some cases, appropriate respiratory protection

can also be identified as being necessary.

The performance requirements in this document take account of accidental exposure to heat and flame,

but do not cover PPE for firefighting. While this document takes account of accidental exposure to some

common chemicals, it is not intended that PPE to this document should be considered as providing

chemical protection as a primary function. It does not cover PPE to protect against biological, electrical

or radiation hazards. The risk assessment determines whether PPE complying to this document or the

requirements of any other relevant standard is more suitable.

Firefighters should be trained in the use, care and maintenance of the PPE covered by this document,

including an understanding of its limitations.
© ISO 2018 – All rights reserved v
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INTERNATIONAL STANDARD ISO 18639-6:2018(E)
PPE ensembles for firefighters undertaking specific rescue
activities —
Part 6:
Footwear
1 Scope

This document provides the principles that govern the development of incident type and/or hazard

specific test methods and minimum performance requirements for safety footwear for firefighters

while engaged in specific rescue activities.

Footwear related to specific rescue activities, e.g. Road Traffic Crash, (RTC) and Urban Search and

Rescue, (USAR) is documented in individual subclauses of this document.
NOTE For further guidance refer ISO 18639-1.

The purpose of this document is to ensure minimum performance requirements for incident type

and/or hazard specific safety footwear are designated.

This document covers general footwear design, the minimum performance level of the materials used

and the methods of test for determining this performance level.

It does not cover special footwear for use in other high risk situations such as structural firefighting.

This document does not cover protection for the head, torso, arms, hands and legs or protection of the

feet against other hazards, e.g. chemical, biological, radiation and electrical hazards, except for limited,

accidental exposure to fire ground chemicals and contaminated blood or body fluids.

Selection of the appropriate system of Personal Protective Equipment, (PPE), including footwear,

is dependent on carrying out an effective risk assessment which identifies the hazard to be faced,

evaluates the likelihood of those hazards and provides the means of reducing or eliminating these

hazards.
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 18639-1, PPE for firefighters undertaking specific rescue activities — Part 1: General

ISO 13994, Clothing for protection against liquid chemicals — Determination of the resistance of protective

clothing materials to penetration by liquids under pressure

ISO 15025, Protective clothing — Protection against flame — Method of test for limited flame spread

ISO 20344, Personal protective equipment — Test methods for footwear
ISO 20345, Personal protective equipment — Safety footwear

EN 50321, Electrically insulating footwear for working on low voltage installations

© ISO 2018 – All rights reserved 1
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ISO 18639-6:2018(E)
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 18639-1 and ISO 20345 apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
4 Classification and designs
Footwear shall be classified in accordance with Table 1 and Figure 1.
Table 1 — Classification of footwear
Classification Description

Footwear made from leather and other materials, excluding all-rubber or all-polymeric

Class I
footwear

Class II All-rubber (i.e. entirely vulcanized) or all-polymeric (i.e. entirely moulded) footwear

2 © ISO 2018 – All rights reserved
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ISO 18639-6:2018(E)
a) Low shoe — Not allowed b) Ankle boot
c) Half-knee boot d) Knee-height boot
e) Thigh boot

Variable extension which can be adapted to the wearer, see Note 1 for more information.

NOTE 1 Design E can be a knee-height boot (design D) equipped with a thin impermeable material which

extends the upper and which can be cut to adapt the boot to the wearer.

NOTE 2 Class II footwear can be equipped with another material which extends the upper (see

ISO 20345:2011, Annex A).
Figure 1 — Designs of footwear
© ISO 2018 – All rights reserved 3
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ISO 18639-6:2018(E)
5 Sampling and conditioning

Where not directly specified in a clause of this document, the sampling and conditioning of samples

shall satisfy the requirements of 5.1 and 5.2.
5.1 Sampling
The minimum number of samples shall be those specified ISO 20344:2011, Table 1.

Wherever possible, test pieces shall be taken from the whole footwear unless otherwise stated in this

document or ISO 20344.

If it is not possible to obtain a large enough test piece from the footwear, then a sample of the material

from which the component has been manufactured may be used instead and this shall be noted in the

test report.

Where samples are required from each of three sizes, these shall comprise the largest, smallest and a

middle size of the footwear under test.
5.2 Conditioning

All test pieces shall be conditioned in a standard atmosphere of (23 ± 2) °C and (50 ± 5) % relative

humidity for a minimum of 48 h before testing, unless otherwise stated in the test method.

The maximum time which shall elapse between removal from the conditioning atmosphere and the

start of testing shall be less than 10 min, unless otherwise stated in the test method.

Each test piece shall individually satisfy the specific requirement, unless otherwise stated in the

test method.

NOTE The uncertainty of measurement for each test method described in the present document can be

assessed. One of the two following approaches needs to be used:
[1]
— a statistical method, e.g. that given in ISO 5725-2 ;
[3]
— a mathematical method, e.g. that given in ENV 13005 .
6 Performance requirements
6.1 General

Footwear shall meet the requirements of 6.2 appropriate to the rescue activity classification for the

footwear.
6.2 Summary of requirements and classification of specific rescue activities

RTC or USAR footwear shall conform to the respective mandatory requirements (indicated by X and

O) given in Table 2 below. Where additional performance features are claimed (indicated by *), the

footwear shall conform to the requirements in 6.3 to 6.7.
4 © ISO 2018 – All rights reserved
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ISO 18639-6:2018(E)
Table 2 — Summary of requirements
Classification of specific rescue activity RTC USAR
Class Class
This docu- Subclause of
Requirement Marking
ment ISO 20345:2011
I II I II
Design Height of upper (B, C, D, E) 5.2.2 X X X X
Seat region 5.2.3 X X X X
Whole
Sole performance: 5.3.1
footwear
— Construction 5.3.1.1 X N/A X N/A
— Upper/outsole bond strength 5.3.1.2 X N/A X N/A
Toe protection: 5.3.2
— General 5.3.2.1 X X X X
— Internal length of toecaps 5.3.2.2 X X X X
— Impact resistance 5.3.2.3 X X X X
— Compression resistance 5.3.2.4 X X X X
— Behaviour of toecaps 5.3.2.5 X X X X
Leakproofness 5.3.3 N/A X N/A X
Water resistance 6.5.1 X N/A X N/A WR
Specific ergonomic features 5.3.4 X X X X
Slip resistance (for more details, see
5.3.5
Annex D:
— Slip resistance on ceramic tile floor with
5.3.5.4 X X X X
NaLS and on steel floor with glycerine (SRC)
Whole footwear Electrical properties 6.5.2 X X X X
— Electrically insulating footwear
EN 50321:1999,
6.5.2.1
5.3
— Antistatic footwear
6.5.2.2
Cut resistance 6.2.8 X X X X CR
Penetration resistance 6.2.1 X X X X P
Flame resistance 6.3.2 X X * * FR
ISO 17249:2013,
Cut resistance by a hand-held chainsaw 6.4.1 * * * *
Figure 1
Metatarsal protection 6.4.2 * * * * M
Ankle protection 6.4.3 * * X X AN
Upper General 5.4.1 X N/A X N/A
Thickness 5.4.2 N/A X N/A X
Tear strength 5.4.3 X N/A X N/A
Tensile properties 5.4.4 X X X X
Flexing resistance 5.4.5 N/A X N/A X
Water vapour permeability and coefficient 5.4.6 X N/A X N/A
pH value 5.4.7 X N/A X N/A
Hydrolysis 5.4.8 N/A X N/A X
Chromium VI content 5.4.9 X N/A X N/A
Liquid penetration resistance 6.7.1 * * * * LPR
© ISO 2018 – All rights reserved 5
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ISO 18639-6:2018(E)
Table 2 (continued)
Classification of specific rescue activity RTC USAR
Class Class
This docu- Subclause of
Requirement Marking
ment ISO 20345:2011
I II I II
Vamp lining
Tear strength 5.5.1 X O X O
Abrasion resistance 5.5.2 X O X O
Water vapour permeability and coefficient 5.5.3 X O X O
pH value 5.5.4 X O X O
Chromium VI content 5.5.5 X O X O
Quarter
Tear strength 5.5.1 O O O O
lining
Abrasion resistance 5.5.2 O O O O
Water vapour permeability and coefficient 5.5.3 O O O O
pH value 5.5.4 O O O O
Chromium VI content 5.5.5 O O O O
Insole/
Insulation against heat Table 3 X O X O
Insock
Tongue Tear strength 5.6.1 O O O O
pH value 5.6.2 O O O O
Chromium VI content 5.6.3 O O O O
Outsole Design 5.8.1 X X X X
Tear strength 5.8.2 X X X X
Abrasion resistance 5.8.3 X X X X
Flexing resistance 5.8.4 X X X X
Hydrolysis 5.8.5 X X X X
Interlayer bond strength 5.8.6 O O O O
Resistance to hot contact 6.4.1 X X X X HRO
Resistance to fuel oil 6.4.2 X X X X FO
Insulation against heat 6.3.1 X X X X HI

NOTE The applicability of a requirement is indicated in the table by the following:

X means that a requirement shall be met. In some case the requirement relates only to particular materials e.g. pH of leather components. This does not

mean that other materials are precluded.
O means that if a component part exists, the requirement shall be met

* means that if the property is claimed, the requirement given in the appropriate clause shall be met

means that it is obligatory that one of the requirements are met
6.3 Thermal requirements
6.3.1 Insulation against heat

When tested according to the procedure described in ISO 20344:2011, 5.12 the footwear shall meet the

requirements for the temperature inside the footwear (Table 3) and the requirements for resistance to

degradation (Table 4).
Table 3 — Requirement for temperature inside the footwear
Sandbath temperature (°C) 250
Inside temperature of the footwear (°C) <42 after 10 min
6 © ISO 2018 – All rights reserved
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ISO 18639-6:2018(E)
Table 4 — Requirement for resistance to degradation
Sandbath temperature (°C) 250
Test duration 20 min
Assessment After testing footwear shall conform to A.2.1
6.3.2 Flame resistance
6.3.2.1 Sampling and conditioning

All different external materials, including external seams, labels and closing mechanisms, as provided,

as a complete sample of footwear shall be tested in accordance with ISO 15025 as modified in below.

6.3.2.2 Procedure

6.3.2.2.1 Place the burner (see Figure 2) on a flat, horizontal surface with the burner and flame in a

vertical position.

6.3.2.2.2 Clamp the part of the footwear to be tested so that the minimum distance from the top of

the burner to the footwear surface is (17 ± 1) mm and the angle between the sample area to be tested

and the horizontal plane is (45 ± 5)° (see Figure 2). The sample carrier has a square flame application

aperture size of [(50 × 50) ± 1] mm.

NOTE A simple clamp commonly used for holding test tubes on a metal stand or a sample carrier can be used

to hold the footwear.
a) Plan view b) During the test c) Before the test
Key
1 burner
2 sample carrier
3 footwear being tested
4 flame application aperture
Figure 2 — Equipment for flame resistance tests

6.3.2.2.3 Move the burner away from the sample and ignite the burner and preheat it for 2 min and

adjust the flame height in accordance with ISO 15025.
© ISO 2018 – All rights reserved 7
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ISO 18639-6:2018(E)

6.3.2.2.4 Reposition the burner as in 6.3.2.2.2. and apply the flame for (10 ± 1) s to the designated area.

6.3.2.2.5 Remove the flame and measure any after-flame and/or after-glow as defined in ISO 15025.

6.3.2.2.6 Repeat procedures 6.3.2.2.2, 6.3.2.2.3 and 6.3.2.2.4 for at least one test piece of each different

external material used in the construction of the footwear, external seams and closing mechanism.

When tested in accordance with the method described above, the footwear shall neither flame for more

than 2 s (after-flame time) nor glow more than 2 s (after-glow time). After testing, the footwear shall

conform to A.2.2.
6.4 Mechanical protection requirements
6.4.1 Cut resistance by a hand-held chainsaw

When tested against the requirements of ISO 17249, the footwear shall meet the design requirements

and provide level 1 protection or higher.
6.4.2 Metatarsal Protection

The footwear shall conform to all the requirements given in ISO 20345:2011, 6.2.6.

6.4.3 Ankle Protection

The footwear shall conform to all the requirements given in ISO 20345:2011, 6.2.7

6.5 Environmental protection requirements
6.5.1 Water resistance

When tested in accordance with ISO 20344:2011, 5.15.2, the total wetted area inside the footwear shall

not be greater than 3 cm .
6.5.2 Electrical properties
The footwear shall comply with either 6.5.2.1 or 6.5.2.2.
6.5.2.1 Electrically insulating footwear

Electrically insulating footwear shall fulfill the requirements given in ISO 20345:2011, 6.2.2.3.

The test voltages shall be 5 kVrms for the proof test and shall be 10 kVrms for withstand test. (This

relates to Class 0 electrical resistance).
6.5.2.2 Antistatic footwear

Antistatic footwear shall conform to all the requirements given in of ISO 20345:2011 6.2.2.2.

6.6 Visibility requirements
This subclause has no text.
8 © ISO 2018 – All rights reserved
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ISO 18639-6:2018(E)
6.7 Biological and chemical requirements
6.7.1 Liquid penetration resistance

When tested according to ISO 13994, procedure C1, footwear uppers, upper seams and vamp seams

shall show no penetration of the following liquids for 1 h:
— 40 % sodium hydroxide (NaOH) at 20 °C;
— 36 % hydrochloric acid (HCl) at 20 °C;
— 30 % sulfuric acid (H SO ) at 20 °C;
2 4
— 50 % toluene and 50 % iso-octane (V/V).
7 Marking

Each item of safety footwear shall be clearly and permanently marked, e.g. by embossing or branding,

with the following:
a) size;
b) manufacturer's identification mark;
c) manufacturer's unique model/design identification;
d) year and month of manufacture;
e) reference to this document, i.e. ISO 18639-6;

f) reference to the specific rescue activity to which the footwear complies. This reference should be

adjacent to;
i.e. ISO 18639-6 RTC or ISO 18639-6 USAR or ISO 18639-6 RTC USAR;
g) marking symbols for any optional requirements that are met.
8 Information to be supplied
8.1 General

Safety footwear shall be supplied to the customer with information written at least in the official

language(s) of the country of destination. All information shall be unambiguous and shall include the

following.

a) Name and full address of the manufacturer and/or his authorized representative;

b) Name and full address of the authority certifying compliance with this document;

c) Reference to this International Standard, i.e. ISO 18639-6;
d) Explanation of any pictograms, markings and levels of performance;

e) Basic explanation of the tests that have been applied to the footwear, if applicable;

f) Instructions for use:
1) tests to be carried out by the wearer before use, if required;
2) fitting and how to put on and take off the footwear, if relevant;
© ISO 2018 – All rights reserved 9
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ISO 18639-6:2018(E)

3) application (basic information on possible uses and, where detailed information is given, the

source);
4) limitations of use (e.g. temperature range);

5) instructions for storage and maintenance, with maximum periods between maintenance

checks (if important, drying procedures to be defined);
6) instructions for cleaning and/or decontamination;
7) obsolescence deadline or period of obsolescence;

8) if appropriate, warnings against problems likely to be encountered (modifications can

invalidate the type approval, e.g. orthopaedic footwear);
9) if helpful, additional illustrations, part numbers, etc.
g) Reference to accessories and spare parts, if relevant;
h) Type of packaging suitable for transport, if relevant.
8.2 Antistatic footwear

Each pair of antistatic footwear shall be supplied with a leaflet containing the following wording.

Antistatic footwear should be used if it is necessary to minimize electrostatic build-up by dissipating

electrostatic charge, thus avoiding the risk of spark ignition of, for example flammable substances and

eliminated.

ATTENTION — It should be noted, however, that antistatic footwear cannot guarantee an adequate

protection against electric shock as it introduces only a resistance between foot and floor.

If the risk of electric shock has not been completely eliminated, additional measures to avoid this risk

are essential. Such measures, as well as the additional tests mentioned below, should be a routine part

of the accident prevention program at the workplace.

Experience has shown that, for antistatic purposes, the discharge path through a product should

normally have an electrical resistance of less than 1 000 MΩ at any time throughout its useful life. A

value of 100 kΩ is specified as the lowest limit of resistance of a product when new, in order to ensure

some limited protection against dangerous electric shock or ignition in the event of any electrical

app
...

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