EN ISO 340:2022

SLOVENSKI STANDARD
01-oktober-2022
Nadomešča:
SIST EN ISO 340:2013
Naprave za kontinuirni transport - Trakovi tračnih transporterjev - Laboratorijska
lestvica lastnosti gorljivosti (vnetljivosti) - Zahteve in preskusna metoda (ISO
340:2022)
Conveyor belts - Laboratory scale flammability characteristics - Requirements and test
method (ISO 340:2022)
Fördergurte - Brandverhalten unter Laborbedingungen - Anforderungen und
Prüfverfahren (ISO 340:2022)
Courroies transporteuses - Caractéristiques d'inflammabilité d'échelle de laboratoire -
Exigences et méthode d'essai (ISO 340:2022)
Ta slovenski standard je istoveten z: EN ISO 340:2022
ICS:
13.220.40 Sposobnost vžiga in Ignitability and burning
obnašanje materialov in behaviour of materials and
proizvodov pri gorenju products
53.040.20 Deli za transporterje Components for conveyors
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 340
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2022
EUROPÄISCHE NORM
ICS 13.220.40; 53.040.20 Supersedes EN ISO 340:2013
English Version
Conveyor belts - Laboratory scale flammability
characteristics - Requirements and test method (ISO
340:2022)
Courroies transporteuses - Caractéristiques Fördergurte - Brandverhalten unter Laborbedingungen
d'inflammabilité d'échelle de laboratoire - Exigences et - Anforderungen und Prüfverfahren (ISO 340:2022)
méthode d'essai (ISO 340:2022)
This European Standard was approved by CEN on 26 May 2022.

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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 340:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 340:2022) has been prepared by Technical Committee ISO/TC 41 "Pulleys and
belts (including veebelts)" in collaboration with Technical Committee CEN/TC 188 “Conveyor belts” the
secretariat of which is held by SNV.
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 December 2022, and conflicting national standards
shall be withdrawn at the latest by December 2022.
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 ISO 340:2013.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
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 340:2022 has been approved by CEN as EN ISO 340:2022 without any modification.

INTERNATIONAL ISO
STANDARD 340
Fifth edition
2022-05
Conveyor belts — Laboratory scale
flammability characteristics —
Requirements and test method
Courroies transporteuses — Caractéristiques d'inflammabilité
d'échelle de laboratoire — Exigences et méthode d'essai
Reference number
ISO 340:2022(E)
ISO 340:2022(E)
© ISO 2022
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: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ISO 340:2022(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Requirements . 2
4.1 Periods of afterflame (after removal of the burner) . 2
4.2 Non-reappearance of flame (after applying a current of air) . 2
4.3 Regional requirements . 2
5 Test method . 2
5.1 Health and safety . . 2
5.1.1 Smoke and fumes . 2
5.1.2 Handling, storage and disposal of liquefied petroleum gas containers . 2
5.2 Principle . 3
5.3 Test pieces . . 3
5.3.1 General . 3
5.3.2 Conveyor belting with a textile carcass . 3
5.3.3 Steel cord conveyor belts . 3
5.4 Apparatus . 4
5.5 Location of test . 5
5.6 Conditioning of test pieces . 6
5.7 Procedure . 6
5.8 Expression of results . . 6
6 Test report . 7
Bibliography . 8
iii
ISO 340:2022(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 of 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
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 41, Pulleys and belts (including veebelts),
Subcommittee SC 3, Conveyor belts, in collaboration with the European Committee for Standardization
(CEN) Technical Committee CEN/TC 188, Conveyor belts, in accordance with the Agreement on technical
cooperation between ISO and CEN (Vienna Agreement).
This fifth edition cancels and replaces the fourth edition (ISO 340:2013), which has been technically
revised.
The main changes are as follows:
— normative references updated;
— terminological entry added;
— regional requirements added in Clause 4;
— Clause 5 revised by addition of illustrations, clarifications and tolerances.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
INTERNATIONAL STANDARD ISO 340:2022(E)
Conveyor belts — Laboratory scale flammability
characteristics — Requirements and test method
CAUTION — This method of test is not designed to assess the fire hazard of any given product.
The results may help in the assessment of ignition hazard but should not be used in isolation as
evidence that a product or material is safe.
1 Scope
This document specifies a method for assessing, on a small scale, the reaction of a conveyor belt to an
ignition flame source. It is applicable to conveyor belts having a textile carcass as well as steel cord
conveyor belts.
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 t
...