SIST EN ISO 11393-2:2019

Protective clothing for users of hand-held chainsaws - Part 2: Performance requirements and test methods for leg protectors (ISO 11393-2:2018)

This document specifies the performance requirements, test methods, design requirements, identification and marking information for leg protectors that offer protection against cutting by hand-held chainsaws.

Schutzkleidung für die Benutzer von handgeführten Kettensägen - Teil 2: Leistungsanforderungen und Prüfmethoden für Beinschützer (ISO 11393-2:2018)

Dieses Dokument legt die Leistungsanforderungen, Prüfverfahren, Gestaltungsanforderungen sowie Anforderungen zu Identifikation und Kennzeichnungsangaben für Beinschützer fest, die Schutz gegen Schnitte von handgeführten Kettensägen bieten.

Vêtements de protection pour utilisateurs de scies à chaîne tenues à la main - Partie 2: Exigences de performance et méthodes d'essai pour protège-jambes (ISO 11393-2:2018)

Le présent document spécifie les exigences de performance, les méthodes d'essai, les exigences de conception, l'identification et les informations de marquage relatives aux protège-jambes qui offrent une protection contre les coupures dues aux scies à chaîne tenues à la main.

Varovalna obleka za uporabnike ročnih verižnih žag - 2. del: Zahtevane lastnosti in preskusne metode za ščitnike nog (ISO 11393-2:2018)

Ta del standarda ISO 11393 opredeljuje zasnovo ter določa zahteve in preskusne metode za ščitnike nog, ki zagotavljajo zaščito pred urezom z ročno verižno žago, vključno z zahtevami za opredelitev, označevanje in informiranje uporabnika.

General Information

• Status: Published
• Public Enquiry End Date: 19-Feb-2017
• Publication Date: 06-Nov-2019
• ICS: 13.340.50 - Leg and foot protection
• Technical Committee: OVP - Personal protecting equipment
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 16-Oct-2019
• Due Date: 21-Dec-2019
• Completion Date: 07-Nov-2019
• Directive: 2016/425 - Regulation (EU) 2016/425 of the European Parliament and of the Council of 9 March 2016 on personal protective equipment and repealing Council Directive 89/686/EEC
• Directive: 89/686/EEC - Council Directive 89/686/EEC of 21 December 1989 on the approximation of the laws of the Member States relating to personal protective equipment
• Mandate: M/031 - Standardization mandate to CEN/CENELEC concerning standards for Personal Protective Equipment
• Ref Project: EN ISO 11393-2:2019 - Protective clothing for users of hand-held chainsaws - Part 2: Performance requirements and test methods for leg protectors (ISO 11393-2:2018)

Relations

• Replaces: SIST EN 381-2:1996 - Protective clothing for users of hand-held chain saws - Part 2: Test methods for leg protectors
• Effective Date: 01-Dec-2019
• Replaces: SIST EN 381-5:1996 - Protective clothing for users of hand-held chain saws - Part 5: Requirements for leg protectors
• Effective Date: 01-Dec-2019

Overview

EN ISO 11393-2:2019 - "Protective clothing for users of hand‑held chainsaws - Part 2: Performance requirements and test methods for leg protectors (ISO 11393-2:2018)" is a CEN-adopted international standard that specifies performance, test methods, design, marking and identification requirements for leg protectors (e.g., trousers, chaps, leggings) intended to reduce injury from cutting by hand‑held chainsaws. The standard replaces earlier EN 381 parts and was prepared by ISO/TC 94 in collaboration with CEN/TC 162. It also maps to EU Regulation (EU) 2016/425 on personal protective equipment.

Key topics and technical requirements

The standard covers the full lifecycle of leg-protector assessment and certification, including:

• Scope and terminology: Definitions for leg protectors and protected zones.
• Performance requirements: Resistance to cutting by chainsaws (including classification by chain speed), durability, and strength of attachment for protective inserts.
• Test methods:
  • Cut‑resistance testing with defined test specimens, apparatus and mounting.
  • Pre‑treatment procedures (cleaning, temperature/spinning effects) and measurement of dimensional and other changes.
  • Measurement of protective coverage for different designs (Trousers, Chaps, Design A/B/C).
  • Tests for strength of attachment of protective inserts and strap attachments.
  • Ergonomic assessment and surface‑condition testing.
• Design and marking:
  • Requirements for sizing, ergonomics, innocuousness of materials (no harmful effects), and maximum user impediment.
  • Mandatory marking, pictograms and manufacturer information for safe use and conformity.
• Documentation: Test reports and requirements for instruction and information to users.

Applications and users

This standard is essential for stakeholders involved in chainsaw safety and PPE:

• PPE manufacturers and designers - to design leg protectors that meet recognized performance and marking requirements.
• Test laboratories and certification bodies - to perform standardized cut‑resistance, attachment strength and ergonomic tests.
• Procurement officers and safety managers - to specify compliant leg protection for forestry workers, arborists, utility crews and land managers.
• Regulatory compliance teams - to demonstrate conformity with EU Regulation (EU) 2016/425 when the standard is referenced in the Official Journal.

Related standards

• Supersedes: EN 381-2:1995 and EN 381-5:1995 (previous European provisions for leg protection).
• Part of the ISO 11393 series on protective clothing for hand‑held chainsaw users; consult other parts for garments beyond leg protectors.

Keywords: EN ISO 11393-2:2019, leg protectors, chainsaw protective clothing, chainsaw cut resistance, PPE test methods, personal protective equipment, performance requirements.

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2019
Nadomešča:
SIST EN 381-2:1996
SIST EN 381-5:1996
Varovalna obleka za uporabnike ročnih verižnih žag - 2. del: Zahtevane lastnosti in
preskusne metode za ščitnike nog (ISO 11393-2:2018)
Protective clothing for users of hand-held chainsaws - Part 2: Performance requirements
and test methods for leg protectors (ISO 11393-2:2018)
Schutzkleidung für die Benutzer von handgeführten Kettensägen - Teil 2:
Leistungsanforderungen und Prüfmethoden für Beinschützer (ISO 11393-2:2018)
Vêtements de protection pour utilisateurs de scies à chaîne tenues à la main - Partie 2:
Exigences de performance et méthodes d'essai pour protège-jambes (ISO 11393-
2:2018)
Ta slovenski standard je istoveten z: EN ISO 11393-2:2019
ICS:
13.340.50 Varovanje nog in stopal Leg and foot protection
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 11393-2
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2019
EUROPÄISCHE NORM
ICS 13.340.10 Supersedes EN 381-2:1995, EN 381-5:1995
English Version
Protective clothing for users of hand-held chainsaws - Part
2: Performance requirements and test methods for leg
protectors (ISO 11393-2:2018)
Vêtements de protection pour utilisateurs de scies à Schutzkleidung für die Benutzer von handgeführten
chaîne tenues à la main - Partie 2: Exigences de Kettensägen - Teil 2: Leistungsanforderungen und
performance et méthodes d'essai pour protège-jambes Prüfmethoden für Beinschützer (ISO 11393-2:2018)
(ISO 11393-2:2018)
This European Standard was approved by CEN on 24 April 2019.

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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11393-2:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of REGULATION (EU) 2016/425 of the European Parliament and of the
Council of 9 March 2016 on personal protective equipment aimed to be covered. 4

European foreword
This document (EN ISO 11393-2:2019) has been prepared by Technical Committee ISO/TC 94
"Personal safety -- Personal protective equipment" in collaboration with Technical Committee CEN/TC
162 “Protective clothing including hand and arm protection and lifejackets” the secretariat of which is
held by DIN.
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 March 2020, and conflicting national standards shall
be withdrawn at the latest by March 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 381-2:1995 and EN 381-5:1995.
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(s).
For the relationship with EU Directive(s) 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, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 11393-2:2018 has been approved by CEN as EN ISO 11393-2:2019 without any
modification.
Annex ZA
(informative)
Relationship between this European Standard and the essential
requirements of REGULATION (EU) 2016/425 of the European Parliament
and of the Council of 9 March 2016 on personal protective equipment aimed
to be covered
This European Standard has been prepared under a Commission’s standardization request to provide
one voluntary means of conforming to essential requirements of Regulation (EU) 2016/425 of the
European Parliament and of the Council of 9 March 2016 on personal protective equipment.
Once this standard is cited in the Official Journal of the European Union under that Regulation (EU)
2016/425, compliance with the normative clauses of this standard given in Table ZA.1 confers, within
the limits of the scope of this standard, a presumption of conformity with the corresponding essential
requirements of that Regulation (EU) 2016/425 and associated EFTA regulations.
Table ZA.1 — Correspondence between this European Standard and Regulation (EU) 2016/425
Essential Requirements of Clause(s)/sub-
Remarks/Notes
Regulation (EU) 2016/425 clause(s) of this EN
1.1.1. Ergonomics 4.4; 4.8.2
1.1.2.1. Optimum level of protection 4.4; 4.8.2
1.1.2.2. Classes of protection
4.7.1
appropriate to different levels of risk
1.2.1. Absence of inherent risks and
4.4; 4.5; 4.6; 4.8.2
other nuisance factors
1.2.1.1. Suitable constituent
4.2
materials
1.2.1.2 Satisfactory surface condition
of all PPE parts in contact with the 4.4
user
1.2.1.3 Maximum permissible user
4.4
impediment
1.3.1. Adaptation of PPE to user
4.4; 4.8.2
morphology
1.3.2. Lightness and strength 4.8.
1.4. Manufacturer’s instructions and
9; 7.
information
2.1 PPE incorporating adjustment
4.4; 4.8.2
systems
2.4. PPE subject to ageing 9
2.12. PPE bearing one or more
identification markings or indicators
8.
directly or indirectly relating to
health and safety
3.3. Protection against mechanical
4.7.2
injuries
WARNING 1 — Presumption of conformity stays valid only as long as a reference to this European
Standard is maintained in the list published in the Official Journal of the European Union. Users of this
standard should consult frequently the latest list published in the Official Journal of the European
Union.
WARNING 2 — Other Union legislation may be applicable to the product(s) falling within the scope of
this standard.
INTERNATIONAL ISO
STANDARD 11393-2
Second edition
2018-09
Protective clothing for users of hand-
held chainsaws —
Part 2:
Performance requirements and test
methods for leg protectors
Vêtements de protection pour utilisateurs de scies à chaîne tenues à
la main —
Partie 2: Exigences de performance et méthodes d'essai pour
protège-jambes
Reference number
ISO 11393-2:2018(E)
©
ISO 2018
ISO 11393-2:2018(E)
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved

ISO 11393-2:2018(E)
Contents Page
Foreword .v
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Requirements . 3
4.1 General . 3
4.2 Innocuousness . 3
4.3 Sizing . 3
4.4 Ergonomics . 3
4.5 Dimensional and other changes . 4
4.5.1 Dimensional change . 4
4.5.2 Other changes as a consequence of cleaning . 4
4.6 Protective coverage . 4
4.6.1 General designs of leg protectors . 4
4.6.2 Design A . 5
4.6.3 Design B (chaps) . 7
4.6.4 Design C . 9
4.7 Resistance to cutting by a chainsaw .10
4.7.1 Classification according to chain speed .10
4.7.2 Requirements for cut resistance .10
4.8 Requirements for strength of attachment of protective insert of trousers, chaps
and strap attachment for chaps .10
4.8.1 Trousers and leggings .10
4.8.2 Chaps .11
5 Test specimens for cut testing .11
6 Test methods .11
6.1 Pre-treatment .11
6.1.1 Cleaning .11
6.1.2 Pre-treatment for testing the effect of temperature and spinning on the
structure of the protective insert .12
6.2 Measurement of dimensional change .12
6.3 Measurement of protective coverage .12
6.3.1 General.12
6.3.2 Procedure for trousers and leggings .12
6.3.3 Procedure for chaps .13
6.4 Testing of resistance to cutting .13
6.4.1 Purpose of testing .13
6.4.2 Test specimens.13
6.4.3 Apparatus .13
6.4.4 Mounting of test specimens .13
6.4.5 Test procedure .13
6.5 Measurement of the strength of the protective insert attachment .15
6.5.1 General.15
6.5.2 Test specimens.15
6.5.3 Apparatus .15
6.5.4 Test procedure .16
6.6 Ergonomic testing .17
6.6.1 Ergonomic assessment .17
6.6.2 Procedures .17
6.6.3 Test for surface conditions .18
6.7 Test report .18
ISO 11393-2:2018(E)
7 Marking .18
8 Pictogram .19
9 Information to be supplied by the manufacturer .19
Annex A (informative) Selection of design A, design B or design C .21
Bibliography .22
iv © ISO 2018 – All rights reserved

ISO 11393-2:2018(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 the European Committee for Standardization (CEN) Technical
Committee CEN/TC 162, Protective clothing including hand and arm protection and lifejackets, in
collaboration with ISO Technical Committee TC 94, Personal safety — Personal protective equipment,
Subcommittee SC 13, Protective clothing, in accordance with the agreement on technical cooperation
between ISO and CEN (Vienna Agreement).
This second edition cancels and replaces the first edition (ISO 11393-2:1999), which has been technically
revised. The main changes compared to the previous edition are as follows:
— in the Introduction, the term “hand-held chainsaws primarily constructed for cutting wood” has
been added;
— the normative references have been updated;
— the terms and definitions 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.9, 3.10, 3.12, 3.14 and 3.17 have been added;
— in Clause 4, subclauses have been added, PPE for users of left-handed chainsaws has been added,
the previous “design B” has been deleted, a new “design B” has been added to describe chaps, the
definition for trousers has been specified and a definition valid for chaps has been added;
— in Clause 5, the definition has been specified;
— in Clause 6, the clause has been completely revised, pre-treatment regulation for testing has been
changed; the definitions in 6.2, 6.3, 6.5 and 6.7 have been specified, a definition valid for chaps has
been added, cuts of the smallest and largest sizes have been added, measuring of chaps has been
added, a test method ergonomic testing has been added;
— in Clause 7, marking requirements have been revised;
— in Clause 9, information requirements have been revised;
— in Clause 9, the definition has been specified.
ISO 11393-2:2018(E)
A list of all parts in the ISO 11393 series can be found on the ISO website.
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.
vi © ISO 2018 – All rights reserved

ISO 11393-2:2018(E)
Introduction
This document forms part of a series concerned with personal protective equipment (PPE) designed
to protect against the risks arising from the use of hand-held chainsaws primarily constructed for
cutting wood.
No PPE can ensure a 100 % protection against cutting from a hand-held chainsaw. Nevertheless,
experience has shown that it is possible to design PPE that offers a certain degree of protection.
Different functional principles may be applied in order to give protection. These include:
a) chain slipping: on contact the chain does not cut the material;
b) clogging: fibres are drawn by the chain into the drive sprocket and block chain movement;
c) chain braking: fibres have a high resistance to cutting and absorb rotational energy, thereby
reducing the chain speed.
Often more than one principle is applied.
INTERNATIONAL STANDARD ISO 11393-2:2018(E)
Protective clothing for users of hand-held chainsaws —
Part 2:
Performance requirements and test methods for leg
protectors
1 Scope
This document specifies the performance requirements, test methods, design requirements,
identification and marking information for leg protectors that offer protection against cutting by hand-
held chainsaws.
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 5077, Textiles — Determination of dimensional change in washing and drying
ISO 7000, Graphical symbols for use on equipment — Registered symbols
ISO 11393-1:2018,Protective clothing for users of hand-held chainsaws — Part 1: Test rig for testing
resistance to cutting by a chainsaw
ISO 13688:2013, Protective clothing — General requirements
ISO 13935-2, Textiles — Seam tensile properties of fabrics and made-up textile articles — Part 2:
Determination of maximum force to seam rupture using the grab method
ISO 17249, Safety footwear with resistance to chain saw cutting
ISO 20345, Personal protective equipment — Safety footwear
3 Terms and definitions
For the purposes of this document, the following terms and definitions 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/
3.1
attachment
connection (usually stitching) between the protective insert and the outer or lining fabric
3.2
attachment force
force that the connection between the protective insert and any structural fabric can withstand,
independent of the way the protective insert is attached to the outer fabric
ISO 11393-2:2018(E)
3.3
chaps
leg protectors (3.11) that cover the front of a leg and fasten around the waist and the back of the leg
3.4
crotch
point between the legs where the two side seams (3.17), which run up the inside of each leg, meet
Note 1 to entry: In cases where the side seams do not lie along the edge of the trousers when they are flattened
out, the theoretical crotch point effectively becomes the point where the two edges of the trousers converge.
3.5
cut-through
any visible change on the underside of the innermost layer of the test sample caused by the saw chain
3.6
damage
condition where some yarns of the protective fabric lose their position in the structure
due to a broken ladder during the pre-treatment (3.12) cycle
Note 1 to entry: The broken ladder is often caused by a broken knitting yarn.
3.7
fly
fastening in the front (3.8) of a pair of trousers
3.8
front
forward 50 % of the leg circumference
3.9
joins
place or line where two or more parts of the protective insert (3.14) are connected or fastened together,
e.g. by seams (3.17) or zippers
3.10
leggings
seat-less trousers
3.11
leg protectors
any type of protective garment that protects at least the specified protective area (3.18) to a specified
level of resistance for the leg
3.12
pre-treatment
standard way of preparing the samples before testing
Note 1 to entry: This might include a number of cleaning cycles, submitting the sample to heat, mechanical action
or any other relevant exposure, and is finished by conditioning.
3.13
protective coverage
area of the garment that is covered by protective material (3.15)
3.14
protective insert
fabric, usually placed between the outer fabric and the lining of a garment, that is able to stop the chain
by clogging, braking or repelling the chain
2 © ISO 2018 – All rights reserved

ISO 11393-2:2018(E)
3.15
protective material
material that is designed to protect the wearer against the cutting effect of a hand-held chainsaw
Note 1 to entry: The protective material may include the outer fabric of the garment.
3.16
rear
backwards 50 % of the leg circumference
Note 1 to entry: Depending upon the design and construction, and due to many layers of clogging material, it can
be difficult to establish the front (3.8) and the rear of a leg protector. It is nevertheless of great importance to
establish the front and the rear before pre-treatment (3.12) and testing.
3.17
seam
join where two or more layers of fabric, leather or other materials are held together with stitches
3.18
specified protective area
minimum required protective coverage (3.13)
4 Requirements
4.1 General
General requirements not specifically covered in this document shall be in accordance with ISO 13688.
Tested samples shall conform to all the requirements of this document.
4.2 Innocuousness
Leg protectors shall not adversely affect the health or hygiene of the user. The materials shall not
release or degrade to release substances generally known to be toxic, carcinogenic, mutagenic, toxic
to reproduction or otherwise harmful in the foreseeable conditions of normal use. The specific
innocuousness requirements of ISO 13688:2013, 4.2, shall be met.
4.3 Sizing
Leg protectors shall be marked with their size in accordance with ISO 13688.
4.4 Ergonomics
The leg protectors shall be designed to minimize discomfort and any impediment to movement while
wearing them. When tested according to 6.6.2, the average score shall be 2 or less. The construction
around the crotch shall facilitate lunges. When tested according to 6.6.2, all adjustment systems shall
not become incorrectly adjusted without the user’s knowledge.
NOTE Lunges means to take a long step forward keeping the trailing foot still while bending the knee of the
leading leg.
When tested according to 6.6.3, the design shall be without any appendages below the knee region,
which can become entangled in machinery or the undergrowth. The only possible exceptions to this
requirement are the fastening points of chaps (design B). The leg protector shall be free of rough
surfaces, sharp edges, sharp points, etc., which could cause excessive irritation or injuries.
ISO 11393-2:2018(E)
4.5 Dimensional and other changes
4.5.1 Dimensional change
After cleaning according to the manufacturer’s instructions, the dimensional change when measured
according to 6.2 shall be not more than 6 % in any direction.
4.5.2 Other changes as a consequence of cleaning
After cleaning according to the manufacturer’s instructions, and after cleaning one sample according
to 6.1.2 at 60 °C and spin-drying, and examining according to 6.4.5.4, there shall be no damage in the
protective material due to cleaning.
4.6 Protective coverage
4.6.1 General designs of leg protectors
This document defines three designs: design A and design C for trousers and leggings, and design B for
chaps. Design A, design B and design C have different specified protective areas as stated in 4.6.2, 4.6.3,
4.6.4, respectively. The protective coverage shall be assessed according to 6.3.
Guidance on selecting design A, design B or design C is given in Annex A.
Between the crotch and the fly, a gap of not more than 10 mm wide is permitted. It is recommended to
keep this gap as small as possible. For zippers, buttons, etc., an opening gap in the centre front of not more
than 10 mm is allowed. Peripheral openings at the right side at the waist region may be up to 30 mm.
Each layer of the protective insert of one garment shall be continuous from the top to the bottom. There
shall be no joins in the protective material within the specified protective area. Designs incorporating
joins down the legs of design C are acceptable according to 4.6.4 c) and e).
The two halves of leggings and chaps shall be joined together from the top of the waistband down to the
point of the crotch at the front.
Braces and belts shall have a minimum width of 30 mm.
4 © ISO 2018 – All rights reserved

ISO 11393-2:2018(E)
4.6.2 Design A
The specified protective area for design A is described under a), b), c), d), and e) and is shown in Figure 1.
It is measured according to 6.3.2.
Dimensions in millimetres
right leg left leg left leg right leg
a) Front b) Rear
Key
1 level of crotch
shaded area is protective material
picture shows trousers in regular position, not turned inside out
Figure 1 — Specified protective area, design A
ISO 11393-2:2018(E)
a) Front: the specified protective area fully covers the front of the garment from a maximum of 50 mm
above the lower end of the legs to a minimum of 200 mm above the crotch. It is permitted to leave
out protective material at the fly. For sizes of leg protectors intended for wearers who have a waist
size smaller than 92 cm, the specified protective area only needs to be a minimum of 160 mm above
the crotch.
b) Rear, left leg: the specified protective area covers, on the outer side of the leg, at least a 50 mm
extension. It begins no more than 50 mm from the bottom of the leg and ends not more than
200 mm below the crotch, and then tapers to zero at a height of a minimum of 200 mm above the
crotch or 160 mm for smaller sizes as described in a).
c) Rear, right leg: the specified protective area covers, on the inner side, an at least 50 mm-wide
extension. It begins no more than 50 mm from the bottom of the leg and ends not more than 50 mm
below the crotch.
d) The gap in the protective insert at the fly shall be not more than 10 mm, measured when the zipper
is closed. Underneath the zipper, the protective material can also have a gap and it shall be not
more than 10 mm.
e) The bottom end of the leg of each garment shall be designed to facilitate easy overlap of protective
material with safety footwear worn by the user.
Design A leg protectors intended for users of left-handed chainsaws shall additionally include the
50 mm-wide strip specified in b) and c) on the rear right-hand side of each leg. This design supports the
use of left-handed chainsaws.
6 © ISO 2018 – All rights reserved

ISO 11393-2:2018(E)
4.6.3 Design B (chaps)
The specified protective area for design B is described under a), b), c), d) and e) and is shown in Figure 2.
It is measured according to 6.3.3.
Dimensions in millimetres
right leg left leg left leg right leg
a) Front b) Rear
Key
1 level of crotch
shaded area is protective material
picture shows trousers in regular position, not turned inside out
Figure 2 — Specified protective area, design B
ISO 11393-2:2018(E)
a) Front: the specified protective area fully covers the front of the garment from a maximum of 50 mm
above the lower end of the legs to a minimum of 200 mm above the crotch. The chaps shall be
sewn together at the front in the fly region, a gap inside the protective area of maximum 10 mm is
allowed. For sizes of leg protectors intended for wearers who have a waist size smaller than 92 cm,
the specified protective area only needs to be a minimum of 160 mm above the crotch.
b) Rear, left leg: the specified protective area covers, on the outer side of the leg, at least a 50 mm
extension. It begins no more than 50 mm from the bottom of the leg and ends not more than
200 mm below the crotch, and then tapers to zero at a height of a minimum of 200 mm above the
crotch or 160 mm for smaller sizes as described in a).
c) Rear, right leg: the specified protective area covers, on the inner side, at least a 50 mm-wide
extension. It begins no more than 50 mm from the bottom of the leg and ends not more than 50 mm
below the crotch.
d) There shall be at least four fastening points around the back of each leg (see Figure 2). The straps
shall not be attached directly to the protective insert.
e) Each fastening shall have a stop at the end determining the maximum length of fastening. It shall
prevent excessive loosening of the fastening.
f) The bottom end of the leg of each garment shall be designed to facilitate easy overlap of protective
material with safety footwear worn by the user.
Design B leg protectors intended for users of left-handed chainsaws shall additionally include the
50 mm-wide strip specified in b) and c) on the rear right-hand side of each leg. This design supports the
use of left-handed chainsaws.
8 © ISO 2018 – All rights reserved

ISO 11393-2:2018(E)
4.6.4 Design C
The specified protective area for design C is described under a), b), c), d) and e) and is shown in Figure 3.
It is measured according to 6.3.2.
Dimensions in millimetres
right leg left leg left leg right leg
a) Front b) Rear
Key
1 level of crotch
shaded area is protective material
picture shows trousers in regular position, not pulled inside out
Figure 3 — Specified protective area, design C
ISO 11393-2:2018(E)
a) Front: the specified protective area fully covers the front of the garment from no more than 50 mm
above the lower end of the legs to at least 200 mm above the crotch. It is permitted to leave out
protective material at the fly. The gap at the fly shall be not more than 10 mm. Underneath the
fly, the protective material can have a gap and it shall be not more than 10 mm. For sizes of leg
protectors intended for wearers who have a waist size smaller than 92 cm, the specified protective
area only needs to be at least 160 mm above the crotch.
b) Rear: the specified protective area fully covers the rear of the garment from no more than 50 mm
above the lower end of the legs up to not more than 50 mm below the crotch on the inner side of
each leg and to the level of the crotch on the outside of each leg.
c) Designs incorporating zippers down the leg are acceptable, provided that they are positioned
outside the protective area covered by design A trousers. A gap in protection at the zipper shall
be not more than 4 mm. The strength of the zipper shall be at least 150 N when tested across the
zipper according to 6.5.4. The zipper slider shall be designed to lock when completely closed to
prevent unintentional opening of the zipper.
d) The bottom end of the leg of each garment shall be designed to facilitate easy overlap of protective
material with safety footwear worn by the user.
e) It is acceptable to incorporate one join down each leg, provided that it is positioned outside the
protective area covered by design A trousers and the gap in protection at the join is not more than
4 mm. The strength of the join shall be at least 150 N when tested across the join according to 6.5.4.
4.7 Resistance to cutting by a chainsaw
4.7.1 Classification according to chain speed
Testing in accordance with this document shall be made at one of the following three speeds with
classes designated as follows:
— class 1: 20 m/s ± 0,2 m/s;
— class 2: 24 m/s ± 0,2 m/s; and
— class 3: 28 m/s ± 0,2 m/s.
4.7.2 Requirements for cut resistance
When tested according to 6.4, no cut-through is allowed in any tested specimen. Any damage caused by
the cutting chain to last layer next to the skin shall be considered as cut-through.
4.8 Requirements for strength of attachment of protective insert of trousers, chaps and
strap attachment for chaps
4.8.1 Trousers and leggings
The protective material shall be permanently attached to the garment in such a way that the protective
function is not impaired. The attachment shall be a line of continuous stitching or groups of stitches no
further apart than 5 cm. When tested according to 6.5.4, the attachment of the protective insert to the
outer fabric shall resist at least a force of 150 N for each test specimen, independent if the protective
insert is fixed directly to the outer fabric or with a lining between. The minimum result of the three
tests according to 6.5.4 shall be used.
For designs C seams joining the protective material in design C leg protectors are subjected to the seam
strength tests according to 6.5.4. If the trouser leg of design C-trousers can be opened by zippers, the
strength of the connection between both sides of the protective insert shall be at least 150 N when
tested across the zipper. The minimum result of the three tests according to 6.5.4 shall be used.
10 © ISO 2018 – All rights reserved

ISO 11393-2:2018(E)
Hook and loop type fasteners are not allowed for leggings.
4.8.2 Chaps
Chaps shall stay in place during use when tested according to 6.6.2. Straps shall be at least 30 mm wide.
Fastenings shall ensure that the clothing remains in an effective functional position. Fastenings with
hooks and loops are not allowed for chaps and leggings. Fasteners shall be of quick release type and
stay fastened unless deliberately unfastened by the wearer, as tested according to 6.6.2.
The attachment strength between the strap and the chap material shall be no less than 150 N, tested
according to 6.5.4. The minimum result of the three tests according to 6.5.4 shall be used.
Straps shall be positioned immediately underneath the crotch, at the bottom of the leg and intermediate
straps shall be positioned so that the distance between any two straps is not more than 200 mm.
5 Test specimens for cut testing
The numbers of test specimens for cut testing are as follows and shall include the smallest, the largest
and medium sizes.
a) Designs A and B:
1) if only cleaned by washing: three pairs of complete leg protectors;
2) if only cleaned by dry-cleaning: three pairs of complete leg protectors;
3) if cleaned both by washing and dry-cleaning: six pairs of complete leg protectors.
It is permitted to use the test specimens used for testing dimensional change for the cut testing.
b) Design C:
1) if only cleaned by washing: five pairs of complete leg protectors;
2) if only cleaned by dry-cleaning: five pairs of complete leg protectors;
3) if cleaned both by washing and dry-cleaning: ten pairs of complete leg protectors.
It is permitted to use the test specimens used for testing dimensional change for the cut testing.
6 Test methods
6.1 Pre-treatment
6.1.1 Cleaning
Before testing according to 6.2, 6.3, 6.4 and 6.5, the test specim
...