ISO 11999-6:2016

PPE for firefighters — Test methods and requirements for PPE used by firefighters who are at risk of exposure to high levels of heat and/or flame while fighting fires occurring in structures — Part 6: Footwear

ISO 11999-6:2016 specifies the minimum design and performance requirements for footwear as part of personal protective equipment [PPE] to be used by firefighters, primarily but not solely to protect against flame and high thermal loads while fighting fires occurring in structures.

Équipement de protection personnelle pour pompiers — Méthodes d'essai et exigences pour les équipements de protection personnelle utilisés par les pompiers qui sont à risque d'une exposition à des niveaux élevés de chaleur et/ou de flamme quand la lutte contre les incendies survient dans les structures — Partie 6: Chaussures

General Information

• Status: Published
• Publication Date: 20-Jul-2016
• ICS: 13.340.10 - Protective clothing
• Technical Committee: ISO/TC 94/SC 14 - Firefighters' personal equipment
• Drafting Committee: ISO/TC 94/SC 14 - Firefighters' personal equipment
• Current Stage: 9092 - International Standard to be revised
• Completion Date: 13-Oct-2020

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 11999-6
First edition
2016-08-01
PPE for firefighters — Test methods
and requirements for PPE used
by firefighters who are at risk of
exposure to high levels of heat and/or
flame while fighting fires occurring in
structures —
Part 6:
Footwear
Équipement de protection personnelle pour pompiers — Méthodes
d’essai et exigences pour les équipements de protection personnelle
utilisés par les pompiers qui sont à risque d’une exposition à des
niveaux élevés de chaleur et/ou de flamme quand la lutte contre les
incendies survient dans les structures —
Partie 6: Chaussures
Reference number
ISO 11999-6:2016(E)
©
ISO 2016

---------------------- Page: 1 ----------------------
ISO 11999-6:2016(E)

COPYRIGHT PROTECTED DOCUMENT
© 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
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. [phone]
Fax [phone]
[e-mail]
www.iso.org
ii © ISO 2016 – All rights reserved

---------------------- Page: 2 ----------------------
ISO 11999-6:2016(E)

Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Classification, design and performance level . 1
4.1 Classification . 1
4.2 Design . 2
4.3 Performance Level . 2
5 Sampling and conditioning . 3
5.1 Sampling . 3
5.2 Conditioning . 3
6 Requirements . 3
6.1 General requirement . 3
6.2 Thermal behaviour . 7
6.2.1 Insulation against heat . 7
6.2.2 Radiant heat . 7
6.2.3 Flame resistance . 7
6.3 Resistance to chemicals . 7
6.3.1 Degradation resistance . . 7
6.3.2 Permeation resistance . 8
6.4 Electrical Properties . 8
6.4.1 General. 8
6.4.2 Electrically insulating footwear . 8
6.4.3 Antistatic footwear . 9
6.5 Water resistance . 9
6.6 Outsole . 9
6.6.1 Cleat design . 9
6.6.2 Cleat height . 9
6.6.3 Cleat height in the waist area . 9
6.6.4 Heel breast . 9
6.7 Zipper (slide fastener) .10
6.7.1 Zipper construction .10
6.7.2 Zipper puller attachment strength .10
6.7.3 Zipper lateral strength .10
7 Test methods .10
7.1 Insulation against heat .10
7.2 Radiant heat .10
7.3 Flame resistance test .11
7.3.1 Conditioning and sampling .11
7.3.2 Procedure .11
7.4 Zipper .12
7.4.1 Puller attachment strength .12
7.4.2 Lateral strength . .12
8 Marking .13
9 Information to be supplied .15
9.1 General .15
9.2 Antistatic footwear .15
9.3 Electrically insulating footwear .16
9.4 Insocks .16
9.5 Information regarding penetration resistant insert .17
© ISO 2016 – All rights reserved iii

---------------------- Page: 3 ----------------------
ISO 11999-6:2016(E)

Annex A (normative) Assessment of the footwear by the laboratory during testing for
resistance to heat and flame .18
Annex B (informative) Assessment of the footwear by the wearer .20
Annex C (informative) Assessment of the performance of the footwear .21
Annex D (informative) Summary of testing methodology used in 6.3 .22
Annex E (informative) Slip resistance .25
Bibliography .28
iv © ISO 2016 – All rights reserved

---------------------- Page: 4 ----------------------
ISO 11999-6:2016(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 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
The committee responsible for this document is ISO/TC 94, Personal safety — Protective clothing and
equipment, Subcommittee SC 14, Firefighters’ personal equipment.
ISO 11999 consists of the following parts, under the general title PPE for firefighters — Test methods and
requirements for PPE used by firefighters who are at risk of exposure to high levels of heat and/or flame
while fighting fires occurring in structures:
— Part 1: General
— Part 2: Compatibility [Technical Specification]
— Part 3: Clothing
— Part 4: Gloves
— Part 5: Helmets
— Part 6: Footwear
— Part 9: Fire hoods
© ISO 2016 – All rights reserved v

---------------------- Page: 5 ----------------------
INTERNATIONAL STANDARD ISO 11999-6:2016(E)
PPE for firefighters — Test methods and requirements for
PPE used by firefighters who are at risk of exposure to high
levels of heat and/or flame while fighting fires occurring in
structures —
Part 6:
Footwear
1 Scope
This part of ISO 11999 specifies the minimum design and performance requirements for footwear
as part of personal protective equipment [PPE] to be used by firefighters, primarily but not solely to
protect against flame and high thermal loads while fighting fires occurring in structures.
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 868, Plastics and ebonite — Determination of indentation hardness by means of a durometer (Shore
hardness)
ISO 6942, Protective clothing — Protection against heat and fire — Method of test: Evaluation of materials
and material assemblies when exposed to a source of radiant heat
ISO 15025, Protective clothing — Protection against heat and flame — Method of test for limited flame spread
ISO 20344:2011, Personal protective equipment — Test methods for footwear
ISO 20345:2011, Personal protective equipment — Safety footwear
EN 13832-1, Footwear protecting against chemicals — Part 1: Terminology and test methods
EN 13832-3, Footwear protecting against chemicals — Part 3: Requirements for footwear highly resistant
to chemicals under laboratory conditions
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 20344, ISO 11999-1 and
EN 13832-1 apply.
4 Classification, design and performance level
4.1 Classification
Footwear shall be classified in accordance with Table 1.
© ISO 2016 – All rights reserved 1

---------------------- Page: 6 ----------------------
ISO 11999-6:2016(E)

Table 1 — Classification of footwear
Classification Description
Class I Footwear made from leather and other materials, excluding
all-rubber or all-polymeric footwear
Class II All-rubber (i.e. entirely vulcanized) or all-polymeric (i.e. entirely
moulded) footwear
4.2 Design
Footwear shall conform to one of the designs C to E given in Figure 1.
Key
A low shoe
B ankle boot
C half-knee boot
D knee-height boot
E thigh boot
a
Variable extension which can be adapted to the wearer.
NOTE 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.
Figure 1 — Design of footwear
4.3 Performance Level
This part of ISO 11999 contains two performance levels, A1 and A2. While many requirements are
common to both performance levels, there are differences. Thermal requirements for each level are
different.
NOTE Other parts of the ISO 11999 series dealing with other items of PPE have been developed with two
levels of thermal protection, A1 and A2. It is important to select items of PPE from this part of ISO 11999 from the
same thermal performance level when they are to be worn together.
2 © ISO 2016 – All rights reserved

---------------------- Page: 7 ----------------------
ISO 11999-6:2016(E)

5 Sampling and conditioning
5.1 Sampling
The minimum number of samples shall be that specified in ISO 20344:2011, Clause 6, together with the
minimum number of test pieces taken from each sample, as given in Table 2.
Wherever possible, test pieces shall be taken from the whole footwear unless otherwise stated in this
part of ISO 11999 or in 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 can 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 not greater 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.
The uncertainty of measurement for each test method described in the present standard can be
assessed. One of the two following approaches should be used:
— a statistical method, e.g. that given in ISO 5725-2;
— a mathematical method, e.g. that given in Reference ENV 13005.
Table 2 — Minimum number of samples and test pieces
Property to be Reference Number of Number of test pieces Test only on the
a
determined samples from each sample final footwear
Radiant heat 6.2.2 one pair See 7.2 Yes
Flame 6.2.3 one pair See 7.3 Yes
Zipper puller attachment 6.7.2 three zippers No
strength
Zipper lateral strength 6.7.3 three zippers No
a
ISO 20344:2011, Table 1 applies.
6 Requirements
6.1 General requirement
Footwear for firefighters shall conform to the requirements specified in Table 3.
© ISO 2016 – All rights reserved 3

---------------------- Page: 8 ----------------------
ISO 11999-6:2016(E)

Table 3 — General requirement
Requirement Reference Classification and Marking
performance level symbol
ISO 20345: This part of Class I Class II
2011 ISO 11999
A1 A2 A1 A2
a a
General Footwear Type and classifica- 4.1
construction tion
a a
 Height of upper 5.2.1
a a
 Specific ergonomic 5.3.4
feature
a
 Leakproofness 5.3.3 N/A
a
 Water resistance 6.5 N/A WR
a a
Seat region Design C and D 5.2.2
a
Design E 5.2.2 N/A
a
Whole Sole perfor- Construction 5.3.1.1 N/A
footwear mance
a
 Upper/outsole bond 5.3.1.2 N/A
strength
 Insulation against 6.2.1 A1 A2 A1 A2 A1 or A2
heat
d d d d

a a
 Slip resistance 5.3.5 SRA SRB
SRC
a a
 Energy absorption of 6.2.4
 seat region
a a
Flame resistance 6.2.3
a a
Penetration resist- 6.2.1 P
ance
a a
Toe protec- General 5.3.2.1
tion
a a
Internal length of 5.3.2.2
toe caps
a a
Impact resistance 5.3.2.3
a a
Compression resist- 5.3.2.4
ance
a a
Corrosion resistance 5.3.2.5.1
of metal toe caps
a a
Non metallic toe caps 5.3.2.5.2
d d
Electrical Electrically insulat- 6.4.2 See
d
property ing footwear EN 50321
5.3
d
Antistatic footwear 6.4.3 A
c c
Resistance to Cold insulation of 6.2.3.2 CI
inimical sole complex
environment
c c
Resistance to chem- 6.3 N/A CH
icals
b b
Accessories Zipper 6.7
c c
Metatarsal protection 6.2.6 M
c c
Ankle protection 6.2.7 AN
4 © ISO 2016 – All rights reserved

---------------------- Page: 9 ----------------------
ISO 11999-6:2016(E)

Table 3 (continued)
Requirement Reference Classification and Marking
performance level symbol
ISO 20345: This part of Class I Class II
2011 ISO 11999
A1 A2 A1 A2
a
Upper Thickness 5.4.2 N/A
a
Tear strength 5.4.3 N/A
a a
Tensile properties 5.4.4
a
Flexing resistance 5.4.5 N/A
a
Water vapour perme- 5.4.6 N/A
ability &coefficient
a
pH value 5.4.7 N/A
a
Hydrolysis 5.4.8 N/A
a
Chromium VI content 5.4.9 N/A
a
Water penetration 6.3.1 N/A
 water absorption
a a
Radiant heat 6.2.2
a a
Flame resistance 6.2.3
c c
Cut resistance 6.2.8 CR
a
Lining Vamp Tear strength 5.5.1 N/A
a
Abrasion resistance 5.5.2 N/A
a
Water vapour perme- 5.5.3 N/A
ability &coefficient
a
pH value 5.5.4 N/A
a
Chromium VI content 5.5.5 N/A
b
Quarter Tear strength 5.5.1 N/A
b
Abrasion resistance 5.5.2 N/A
b
Water vapour perme- 5.5.3 N/A
ability &coefficient
b
pH value 5.5.4 N/A
b
Chromium VI content 5.5.5 N/A
b
Tongue Tear strength 5.6.1 N/A
b
pH value 5.6.2 N/A
b
Chromium VI content 5.6.3 N/A
a b
Insole/insocks See Table 4
a a
Outsole Tear strength 5.8.2
a a
 Abrasion resistance 5.8.3
a a
 Flexing resistance 5.8.4
a a
 Hydrolysis 5.8.5
b b
 Interlayer bond 5.8.6
strength
a a
 Resistance to fuel oil 6.4.2
a a
 Cleated area 5.8.1.2
a a
 Thickness 5.8.1.1
a a
 Cleat design 6.6.1
a a
 Cleat height 6.6.2
© ISO 2016 – All rights reserved 5

---------------------- Page: 10 ----------------------
ISO 11999-6:2016(E)

Table 3 (continued)
Requirement Reference Classification and Marking
performance level symbol
ISO 20345: This part of Class I Class II
2011 ISO 11999
A1 A2 A1 A2
a a
 Cleat height in the 6.6.3
waist area
a a
 Heel breast 6.6.4
a a
 Resistance to hot 6.4.1
contacts
The applicability of requirement to a particular classification is indicated in this table by the following:
a
Means that the requirement has to be met. In some cases, the requirement relates only to particular
materials within the classification, e.g. pH value of leather components. This does not mean that other materials
are precluded from use.
b
Means that if the component parts exists, the requirement shall be met.
c
Means that if the property is claimed, the requirement given in the appropriate clause shall be met.
d
Means that one of the two requirements shall be chosen.
N/A means the requirement is not applicable.
Table 4 — Basic requirements for insoles and/or insocks
Options Compo- Requirements to fulfill in ISO 20345
nent to be
Thick- pH Water Abrasion Chromium
assessed
ness absorption VI
Insole Insock
desorption
a a a a a
1 No insole or Non-remov- Insock N/A
if present able insock
not fulfilling
the require-
ments
a a a a a
2 Insole pres- No insock Insole N/A
ent
Seat sock
present
a a
3 Full insock, Insock and N/A N/A N/A N/A
non-remov- insole
able
a a a
Insock N/A N/A N/A
a a a a a
4 Full insock, Insole N/A
removable
a a a
Insock N/A N/A N/A
and water
permeable
a a a a a
5 Full insock, Insole N/A
removable
a a a a
Insock N/A N/A
not water
permeable
NOTE 1 For removable insocks, see 9.3.
a
Means that the requirement shall be met.
N/A means the requirement is not applicable.
6 © ISO 2016 – All rights reserved

---------------------- Page: 11 ----------------------
ISO 11999-6:2016(E)

6.2 Thermal behaviour
6.2.1 Insulation against heat
When tested in accordance with the method described in 7.1, the footwear shall meet the respective
requirements for A1 or A2 performance level in Table 5 and Table 6.
Table 5 — Insulation against heat: requirements for the temperature inside the footwear
Level of performance for each Performance level A1 Performance level A2
requirements
Sand bath temperature (°C) 250
Inside temperature of the foot- <42 after 10 min
wear (°C)
Table 6 — Insulation against heat: requirements for footwear degradation
Level of performance for each re- Performance level A1 Performance level A2
quirements
Sand bath temperature (°C) 250
Total duration of the test 20 min 40 min
Assessment After testing, the footwear shall conform to A.2.1.
6.2.2 Radiant heat
When tested in accordance with the method described in 7.2, the temperature increase for each material
combination shall be equal or less than 24 °C. After testing, the footwear shall conform to A.2.2.
6.2.3 Flame resistance
When tested in accordance with the method described in 7.3, 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.2.3.
6.3 Resistance to chemicals
6.3.1 Degradation resistance
When tested in accordance with EN 13832-3:2006, 6.2.2, footwear with resistance to chemicals shall
meet the degradation requirement with at least three chemicals from Table 7. Other chemicals can be
used additionally according to the intended use.
The sole and upper shall both be tested with the same chemicals. After degradation, the test pieces
shall be tested according to Table 8.
Samples that are too strongly affected by the degradation test do not need to be tested and shall be
considered to fail the test. For example, when the test pieces
— have holes,
— are swollen and distorted, or
— become brittle.
© ISO 2016 – All rights reserved 7

---------------------- Page: 12 ----------------------
ISO 11999-6:2016(E)

Table 7 — List of chemicals
Letter Chemical CAS-NR Class
code
1 B Acetone 78-93-3 Ketone
2 D Dichloromethane 75-09-2 Chlorinated hydro-
carbon
3 F Toluene 108-88-3 Aromatic hydrocar-
bon
4 G Diethylamine 109-89-7 Amine
5 H Tetrahydrofurane 109-99-9 Heterocyclic ether
6 I Ethyl acetate 141-78-6 Ester
7 J n-Heptane 142-85-5 Saturated hydrocar-
bon
8 K Sodium hydroxide solution 30 % d = 1,33 1310-73-2 Alkali solution
9 L Sulphuric acid 95 % d = 1,84 7664-93-9 Inorganic acid
10 M Nitric acid (65 ± 3) % 7697-37-2 Inorganic acid
11 N Acetic acid (99 ± 1) % 64-19^7 Organic acid
12 O Ammonia solution (25 ± 1) % 1336-21-6 Alkali solution
13 P Hydrogen peroxide (30 ± 1) % v/v 124-43-6 peroxide
14 Q Isopropanol 67-63-0 Aliphatic alcohol
15 R Sodium hypochlorite (13 ± 1) % 7681-52-9 hypochlorite
(of active chloride)
NOTE 1 CAS-NR chemical abstract services = reference number of chemical.
NOTE 2 Letters B to L are identical to those given in EN 374-1:2003, Annex A.
Table 8 — Tests for basic properties of the sole and the upper after degradation
Sole Upper
Test Tear resistance Hardness Tear resistance Elongation at break
Test method ISO 20344:2011, 8.2 ISO 868 ISO 20344:2011, 8.2 ISO 20344:2011, 6.4
Requirement Greater or equal to Minimum : 30 Greater or equal to 6,4 Minimum: 80 % of value
6,4 kN/m shore A kN/m before degradation
Maximum : (value
before degrada-
tion +10) shore A
6.3.2 Permeation resistance
When tested in accordance with EN 13832-3:2006, 6.2.3, footwear uppers shall achieve a permeation
resistance at or above 121 mins with at least three of the chemicals from Table 7. The same chemicals as
used in 6.3.1 shall be used.
6.4 Electrical Properties
6.4.1 General
Electrical properties shall conform to either 6.4.2 or 6.4.3.
6.4.2 Electrically insulating footwear
Electrically insulating footwear shall fulfill the requirements given in ISO 20345:2011, 6.2.2.3.
8 © ISO 2016 – All rights reserved

---------------------- Page: 13 ----------------------
ISO 11999-6:2016(E)

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.)
6.4.3 Antistatic footwear
Footwear shall conform to all the requirements given in ISO 20345:2011, 6.2.2.2.
6.5 Water resistance
When tested in accordance with ISO 20344:2011, 5.15.2, the total wetted area inside the footwear shall
2
not be greater than 3 cm .
6.6 Outsole
6.6.1 Cleat design
The cleat design (excluding waist area) shall be such that there are no continuous linear transverse
valleys across the sol
...