Personal protective equipment - Test methods for footwear (ISO 20344:2011)

ISO 20344:2011 specifies methods for testing footwear designed as personal protective equipment.

Persönliche Schutzausrüstung - Prüfverfahren für Schuhe (ISO 20344:2011)

Diese Internationale Norm legt Prüfverfahren für Schuhe als Persönliche Schutzausrüstung (PSA) fest.

Équipement de protection individuelle - Méthodes d'essai pour les chaussures (ISO 20344:2011)

L'ISO 20344:2011 spécifie des méthodes d'essai pour les chaussures conçues comme des équipements de protection individuelle.

Osebna varovalna oprema - Metode preskušanja obutve (ISO 20344:2011)

Ta mednarodni standard določa metode preskušanja obutve, oblikovane kot osebna varovalna oprema.

General Information

Status
Published
Publication Date
30-Nov-2011
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
01-Dec-2011
Completion Date
01-Dec-2011

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SLOVENSKI STANDARD
SIST EN ISO 20344:2012
01-marec-2012
1DGRPHãþD
SIST EN ISO 20344:2004
SIST EN ISO 20344:2004/A1:2007
SIST EN ISO 20344:2004/AC:2006
Osebna varovalna oprema - Metode preskušanja obutve (ISO 20344:2011)
PPersonal protective equipment - Test methods for footwear (ISO 20344:2011)
Persönliche Schutzausrüstung - Prüfverfahren für Schuhe (ISO 20344:2011)

Équipement de protection individuelle - Méthodes d'essais pour les chaussures (ISO

20344:2011)
Ta slovenski standard je istoveten z: EN ISO 20344:2011
ICS:
13.340.50 Varovanje nog in stopal Leg and foot protection
SIST EN ISO 20344:2012 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 20344:2012
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SIST EN ISO 20344:2012
EUROPEAN STANDARD
EN ISO 20344
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2011
ICS 13.340.50 Supersedes EN ISO 20344:2004
English Version
Personal protective equipment - Test methods for footwear (ISO
20344:2011)

Équipement de protection individuelle - Méthodes d'essai Persönliche Schutzausrüstung - Prüfverfahren für Schuhe

pour les chaussures (ISO 20344:2011) (ISO 20344:2011)
This European Standard was approved by CEN on 30 November 2011.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European

Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national

standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation

under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same

status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,

Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 20344:2011: E

worldwide for CEN national Members.
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SIST EN ISO 20344:2012
EN ISO 20344:2011 (E)
Contents Page

Foreword ..............................................................................................................................................................3

Annex ZA (informative) Relationship between this European Standard and the Essential

Requirements of EU Directive 89/686/EEC ..........................................................................................4

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SIST EN ISO 20344:2012
EN ISO 20344:2011 (E)
Foreword

This document (EN ISO 20344:2011) has been prepared by Technical Committee CEN/TC 161 “Foot and leg

protectors”, the secretariat of which is held by BSI, in collaboration with Technical Committee ISO/TC 94

"Personal safety - Protective clothing and equipment".

This European Standard shall be given the status of a national standard, either by publication of an identical

text or by endorsement, at the latest by June 2012, and conflicting national standards shall be withdrawn at

the latest by June 2012.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN ISO 20344:2004.

This document has been prepared under a mandate given to CEN by the European Commission and the

European Free Trade Association, and supports essential requirements of EU Directive.

For relationship with EU Directive, see informative Annex ZA, which is an integral part of this document.

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following

countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech

Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,

Sweden, Switzerland and the United Kingdom.
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SIST EN ISO 20344:2012
EN ISO 20344:2011 (E)
Annex ZA
(informative)
Relationship between this European Standard and the Essential
Requirements of EU Directive 89/686/EEC

This European Standard has been prepared under a mandate given to CEN by the European Commission

and the European Free Trade Association to provide one means of conforming to Essential Requirements of

the EU Directive 89/686/EEC on PPE.

Once this standard is cited in the Official Journal of the European Union under that Directive and has been

implemented as a national standard in at least one Member State, compliance with the clauses of this

standard, together with the relevant requirements given in the product standards, confers within the limits of

the scope of those standards, a presumption of conformity with the corresponding Essential Requirements of

that Directive and associated EFTA regulations.

WARNING — Other requirements and other EU Directives may be applicable to the product(s) falling

within the scope of this standard.
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SIST EN ISO 20344:2012
INTERNATIONAL ISO
STANDARD 20344
Second edition
2011-12-01
Personal protective equipment — Test
methods for footwear
Équipement de protection individuelle — Méthodes d’essais pour les
chaussures
Reference number
ISO 20344:2011(E)
ISO 2011
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SIST EN ISO 20344:2012
ISO 20344:2011(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2011

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,

electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO’s

member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2011 – All rights reserved
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SIST EN ISO 20344:2012
ISO 20344:2011(E)
Contents Page

Foreword ............................................................................................................................................................................. v

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

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

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

4 Sampling and conditioning ............................................................................................................................... 2

4.1 Sampling ................................................................................................................................................................ 2

4.2 Conditioning ......................................................................................................................................................... 2

4.3 Prerequisites on the testing procedure ......................................................................................................... 2

5 Test methods for whole footwear .................................................................................................................... 5

5.1 Specific ergonomic features ............................................................................................................................ 5

5.2 Determination of upper/outsole and sole interlayer bond strength ...................................................... 6

5.3 Determination of internal toecap length ..................................................................................................... 11

5.4 Determination of impact resistance .............................................................................................................12

5.5 Determination of compression resistance .................................................................................................15

5.6 Behaviour of toecaps and inserts (thermal and chemical) ....................................................................17

5.7 Determination of leakproofness ....................................................................................................................18

5.8 Determination of the dimensional conformity of inserts and the penetration resistance

of the sole ............................................................................................................................................................18

5.9 Determination of the flex resistance of penetration-resistant inserts ................................................22

5.10 Determination of electrical resistance .........................................................................................................22

5.11 Determination of footwear slip resistance .................................................................................................23

5.12 Determination of insulation against heat ....................................................................................................26

5.13 Determination of insulation against cold ....................................................................................................28

5.14 Determination of energy absorption of the seat region ..........................................................................29

5.15 Determination of resistance to water for whole footwear ......................................................................31

5.16 Determination of impact resistance of a metatarsal protective device ..............................................36

5.17 Determination of the shock absorption capacity of ankle protection materials incorporated into

the upper ..............................................................................................................................................................40

6 Test methods for upper, lining and tongue ................................................................................................42

6.1 Determination of thickness of upper ...........................................................................................................42

6.2 Measurement of the height of the upper .....................................................................................................42

6.3 Determination of tear strength of the upper, lining and/or tongue ......................................................43

6.4 Determination of the tensile properties of the upper material ..............................................................43

6.5 Determination of upper flexing resistance .................................................................................................44

6.6 Determination of water vapour permeability (WVP) .................................................................................47

6.7 Determination of water vapour absorption (WVA) ....................................................................................51

6.8 Determination of water vapour coefficient .................................................................................................54

6.9 Determination of pH value ..............................................................................................................................54

6.10 Determination of resistance to hydrolysis of upper ................................................................................54

6.11 Determination of chromium VI content .......................................................................................................54

6.12 Determination of abrasion resistance of lining and insock ...................................................................54

6.13 Determination of water penetration and water absorption for upper..................................................57

6.14 Determination of resistance of upper to cutting .......................................................................................59

7 Test methods for insole and insock .............................................................................................................59

7.1 Determination of insole thickness ................................................................................................................59

7.2 Determination of water absorption and desorption of insole and insock .........................................59

7.3 Determination of abrasion resistance of insole ........................................................................................62

8 Test methods for outsole ................................................................................................................................64

8.1 Determination of outsole thickness .............................................................................................................64

8.2 Determination of tear strength of outsole ..................................................................................................65

8.3 Determination of outsole abrasion resistance ..........................................................................................65

8.4 Determination of flexing resistance of outsole .........................................................................................65

© ISO 2011 – All rights reserved iii
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SIST EN ISO 20344:2012
ISO 20344:2011(E)

8.5 Determination of resistance to hydrolysis of outsole .............................................................................70

8.6 Determination of resistance to fuel oil ........................................................................................................70

8.7 Determination of resistance to hot contact ................................................................................................71

Annex A (normative) Procedure for plasticine calibration ....................................................................................74

Annex B (normative) Assessment of footwear by the laboratory during testing of thermal behaviour ..76

Annex C (informative) Footwear sizes ........................................................................................................................77

Bibliography .....................................................................................................................................................................78

iv © ISO 2011 – All rights reserved
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SIST EN ISO 20344:2012
ISO 20344:2011(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.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International Standards

adopted by the technical committees are circulated to the member bodies for voting. Publication as an

International Standard requires approval by at least 75 % of the member bodies casting a vote.

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.

ISO 20344 was prepared by the European Committee for Standardization (CEN) Technical Committee CEN/TC

161, Foot and leg protectors, in collaboration with ISO Technical Committee ISO/TC 94, Personal safety —

Protective clothing and equipment, Subcommittee SC 3, Foot protection, in accordance with the Agreement on

technical cooperation between ISO and CEN (Vienna Agreement).

This second edition cancels and replaces the first edition (ISO 20344:2004), which has been technically

revised. It also incorporates the Technical Corrigendum ISO 20344:2004/Cor.1:2005 and the Amendment

ISO 20344:2004/Amd.1:2007.
The main differences between this edition and the 2004 edition are:
— Annex A, inclusion of a new procedure for plasticine calibration;
— Annex C, inclusion of a new table for footwear sizing;
— 4.1, Table 1, clarification of the method for sampling;
— 5.1, clarification on testing of ergonomic features;
— 5.4 and 5.5, inclusion of a reference to EN 12568:2010;
— 5.8.3, different test methods for anti-penetration insoles;
— 5.15.2, inclusion of a new test method for water resistance;

— 6.4.2 and 6.5.2, inclusion of test methods (due to the withdrawal of ISO 2023);

— 6.11, replacement of the method for determination of chromium VI by a reference to ISO 17075;

— withdrawal of 5.11, “Determination of the electrical insulation”.
© ISO 2011 – All rights reserved v
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SIST EN ISO 20344:2012
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SIST EN ISO 20344:2012
INTERNATIONAL STANDARD ISO 20344:2011(E)
Personal protective equipment — Test methods for footwear
1 Scope

This International Standard specifies methods for testing footwear designed as personal protective equipment.

2 Normative references

The following referenced documents are indispensable for the application 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 34-1:2010, Rubber, vulcanised or thermoplastic — Determination of tear strength — Part 1: Trouser, angle

and crescent test pieces

ISO 868, Plastics and ebonite — Determination of indentation hardness by means of a durometer (Shore

hardness) (ISO 868:2003)
ISO 1817:2011, Rubber, vulcanised — Determination of the effect of liquids
ISO 3290-1, Rolling bearings — Balls — Dimensions and tolerances

ISO 3376, Leather — Physical and mechanical tests — Determination of tensile strength and percentage

extension

ISO 3377-2, Leather — Physical and mechanical tests — Determination of tear load — Part 2: Double edge

tear
ISO 4045, Leather — Determination of pH

ISO 4643:1992, Moulded plastic footwear — Lined or unlined poly (vinyl chloride) boots for general industrial

use — Specification

ISO 4649:2010, Rubber, vulcanized or thermoplastic — Determination of abrasion resistance using a rotating

cylindrical drum device

ISO 4674-1:2003, Rubber- or plastics-coated fabrics — Determination of tear resistance — Part 1: Constant

rate of tear methods

ISO 5423:1992, Moulded plastic footwear — Lined or unlined polyurethane boots for general industrial use —

Specification

ISO 13287, Personal protective equipment — Footwear — Test method for slip resistance

ISO 17075, Leather — Chemical analysis — Determination of chromium VI
ISO 20345:2011, Personal protective equipment — Safety footwear
ISO 20347, Personal protective equipment — Occupational footwear

ISO 23529:2010, Rubber — General procedures for preparing and conditioning test pieces for physical test

methods
EN 388:2003, Protective gloves against mechanical risks

EN 12568:2010, Foot and leg protectors — Requirements and test methods for toecaps and penetration-

resistant inserts
© ISO 2011 – All rights reserved 1
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SIST EN ISO 20344:2012
ISO 20344:2011(E)
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 20345 and ISO 20347 apply.

4 Sampling and conditioning
4.1 Sampling

The minimum number of samples to be tested in order to check compliance with the requirements specified in

ISO 20345, ISO 20347 and any specific job-related footwear standards (e.g. ISO 17249, Safety footwear with

resistance to chain saw cutting), together with the minimum number of test pieces taken from each sample,

shall be in accordance with Table 1.

Wherever possible and necessary to ensure the essential safety requirements, test pieces shall be taken from

the whole footwear. This paragraph is applicable to all of Table 1.

NOTE 1 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. This should be noted in the test report.

NOTE 2 Footwear sizes are defined in Annex C.

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

size of the footwear under test [indicated as (SML) in Table 1].
4.2 Conditioning

All test pieces shall be conditioned in a standard atmosphere of (23 ± 2) °C and (50 ± 5) % RH 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 not be greater than 10 min, unless otherwise stated in the test method.

4.3 Prerequisites on the testing procedure

When several test pieces are tested, at least the worst results per size shall to be reported.

Footwear shall be tested as it is intended to be used, unless otherwise specified in the test method. For

instance, if there is a removable insock, it shall be left in place to perform the tests.

The uncertainty of measurement for each test method described in this International Standard may 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 ENV 13005.
2 © ISO 2011 – All rights reserved
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SIST EN ISO 20344:2012
ISO 20344:2011(E)
Table 1 — Minimum number of samples and test pieces
Test Type and
Property under test Type and
only on Subclause number of test
(B = basic requirement, number
the final reference pieces per
A = additional requirement) of samples
footwear sample
Specific ergonomic features B yes 5.1 1 pair of shoes 1 pair of shoes
in 3 sizes
Upper/outsole and sole interlayer B yes 5.2 1 shoe from 1 test piece
bond strength each of 3 sizes taken from
(SML) the shoe
Internal toecap length B yes 5.3 1 pair of shoes 1 pair of toecaps
from each of
3 sizes (SML)
Impact resistance B yes 5.4 1 pair of shoes 1 pair of shoes
from each of
3 sizes (SML)
Compression resistance B yes 5.5 1 pair of shoes 1 pair of shoes
from each of
3 sizes (SML)
Behaviour of toecaps and inserts B no 5.6
See Tables 3 and 4
(thermal and chemical)
Leakproofness B yes 5.7 2 shoes from 1 shoe
different sizes
Dimensional conformity and A yes 5.8 1 pair of shoes 1 pair of shoes
penetration resistance of inserts from each of
3 sizes (SML)
Flex resistance of penetration- A no 5.9 1 pair of insert 1 pair of inserts
Whole resistant insert from each of
footwear 3 sizes (SML)
Electrical resistance A yes 5.10 1 pair of shoes 1 pair of shoes
from each of
3 sizes (SML)
Slip resistance B yes 5.11 1 shoe from 1 shoe
each of 3 sizes
(SML)
Insulation against heat A yes 5.12 2 shoes from 1 shoe
different sizes
Insulation against cold A yes 5.13 2 shoes from 1 shoe
different sizes
Energy absorption of seat region A yes 5.14 1 pair of shoes 1 pair of shoes
from each of
3 sizes (SML)
Water resistance A yes 5.15 3 pairs of shoes 1 pair of shoes
(minimum
2 different sizes)
Impact resistance metatarsal A yes 5.16 1 pair of shoes 1 pair of shoes
protective device from each of
3 sizes (SML)
Ankle protection A yes 5.17 1 shoe from 2 test pieces
each of 3 sizes
(SML)
© ISO 2011 – All rights reserved 3
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SIST EN ISO 20344:2012
ISO 20344:2011(E)
Table 1 (continued)
Test Type and
Property under test Type and
only on Subclause number of test
(B = basic requirement, number
the final reference pieces per
A = additional requirement) of samples
footwear sample
Thickness B yes 6.1 1 shoe from 1 test piece
each of 3 sizes
(SML)
Height of the upper B yes 6.2 1 shoe from 1 shoe
each of 3 sizes
(SML)
Tear strength B yes 6.3 shoes from each 3 test pieces
of 3 sizes (SML) per size
Tensile properties B yes 6.4 shoes from each 3 test pieces
of 3 sizes (SML) per size
Flexing resistance B yes 6.5 1 shoe from 1 test piece
each of 3 sizes
(SML)
Water vapour permeability B yes 6.6 1 shoe from 1 test piece
each of 3 sizes
(SML)
Upper lining
Water vapour absorption B yes 6.7 1 shoe from 1 test piece
and tongue
each of 3 sizes
(SML)
pH value B no 6.9 Each leather 2 test pieces
Hydrolysis B yes 6.10 1 shoe from 1 test piece
each of 3 sizes
(SML)
Chromium VI content B no 6.11 Each leather 2 test pieces
Abrasion resistance of lining B no 6.12 shoes or 6 test pieces,
materials wet
6 test pieces, dry
Water penetration and water A no 6.13 shoes or 3 test pieces
absorption materials
Cut resistance A no 6.14 1 pair of shoes 2 test pieces
from each of
3 sizes (SML)
or material
Thickness of insole B no 7.1 1 shoe from 1 test piece
each of 3 sizes
or material
pH value B no 6.9 Each leather 2 test pieces
Water absorption and desorption B no 7.2 1 shoe from 1 test piece
each of 3 sizes
or material
Insole and
Abrasion resistance of insole B no 7.3 1 shoe from 1 test piece
Insock
each of 3 sizes
or material
Chromium VI content B no 6.11 Each leather 2 test pieces
Abrasion resistance of insock B no 6.12 Shoes or 6 test pieces,
materials wet
6 test pieces, dry
4 © ISO 2011 – All rights reserved
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SIST EN ISO 20344:2012
ISO 20344:2011(E)
Table 1 (continued)
Test Type and
Property under test Type and
only on Subclause number of test
(B = basic requirement, number
the final reference pieces per
A = additional requirement) of samples
footwear sample
Thickness B yes 8.1 1 shoe from 1 test piece
each of 3 sizes
(SML)
Tear strength B yes 8.2 1 shoe from 1 test piece
each of 3 sizes
(SML)
Abrasion resistance B yes 8.3 1 shoe from 1 test piece
each of 3 sizes
(SML)
Flexing resistance B yes 8.4 1 shoe from 1 test piece
Outsole each of 3 sizes
(SML)
Hydrolysis B yes 8.5 1 shoe from 1 test piece
each of 3 sizes
(SML)
Resistance to fuel oil B yes 8.6 1 shoe from 2 test pieces
each of 3 sizes
(SML)
Resistance to hot contact A yes 8.7 1 shoe from 1 test piece
each of 3 sizes
(SML)
5 Test methods for whole footwear
5.1 Specific ergonomic features

The specific ergonomic features of the footwear shall be assessed by examining the footwear using wear trials

on three wearers with appropriate foot sizes.

During the trials the wearers, wearing each pair of the correctly fitting footwear, simulate typical tasks likely to

be undertaken in general use.
These tasks are:
— walking normally for 5 min at a speed between 4 and 5 km/h;
— climbing (17 ± 3) stairs and descending (17 ± 3) stairs in 1 min maximum;
— kneeling/crouching down (see Figure 1).

After having completed all tasks, each wearer shall fill in the questionnaire given in Table 2.

© ISO 2011 – All rights reserved 5
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SIST EN ISO 20344:2012
ISO 20344:2011(E)
Figure 1 — Position to adopt during the kneel/crouch down test
Table 2 — Questionnaire for the assessment of ergonomic features

1 Is the inside surface of the footwear free from rough, sharp or hard areas that YES NO

caused you irritation or injury (checked by hand)?

2 Is the footwear free of features that you consider make wearing the footwear YES NO

hazardous?
3 Can the fastening be adequately adjusted (if necessary)? YES NO
4 Can the following activities be performed without problems?
4.1 Walking YES NO
4.2 Climbing stairs YES NO
4.3 Kneeling/crouching down YES NO
5.2 Determination of upper/outsole and sole interlayer bond strength
5.2.1 Principle

The force required to separate the upper from the outsole, or to separate adjacent layers of the outsole, or

to cause tear failure of the upper or the sole is measured. The test is not applicable when the bond has been

made by grindery (using e.g. nails or screws) or stitching.

NOTE In all cases the objective should be to test the bond strength nearest to the edge of the assembly.

5.2.2 Apparatus

5.2.2.1 Tensile machine, with a means of continuously recording load, with a jaw separation rate of

(10
...

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