prEN ISO 340

Conveyor belts - Laboratory scale flammability characteristics - Requirements and test method (ISO/DIS 340:2020)

Fördergurte - Brandverhalten unter Laborbedingungen - Anforderungen und Prüfverfahren (ISO/DIS 340:2020)

Diese Internationale Norm legt ein Prüfverfahren zur Bewertung eines Fördergurts im kleinen Maßstab fest, der einer Flamme als Zündquelle ausgesetzt ist. Dieses ist sowohl bei Textil- als auch bei Stahlseilfördergurten anwendbar.

Courroies transporteuses - Caractéristiques d'inflammabilité d'échelle de laboratoire - Exigences et méthode d'essai (ISO/DIS 340:2020)

Naprave za kontinuirni transport - Trakovi tračnih transporterjev - Laboratorijska lestvica lastnosti gorljivosti (vnetljivosti) - Zahteve in preskusna metoda (ISO/DIS 340:2020)

General Information

• Status: Not Published
• ICS: 13.220.40 - Ignitability and burning behaviour of materials and products
• ICS: 53.040.20 - Components for conveyors
• Technical Committee: CEN/TC 188 - Conveyor belts
• Current Stage: 4599 - Dispatch of FV draft to CMC - Finalization for Vote
• Due Date: 20-Jan-2022
• Completion Date: 20-Jan-2022
• Ref Project: oSIST prEN ISO 340:2021 - Conveyor belts - Laboratory scale flammability characteristics - Requirements and test method (ISO/DIS 340:2020)

RELATIONS

• Revised: EN ISO 340:2013 - Conveyor belts - Laboratory scale flammability characteristics - Requirements and test method (ISO 340:2013)
• Effective Date: 01-Apr-2020

Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN ISO 340:2021
01-februar-2021

Naprave za kontinuirni transport - Trakovi tračnih transporterjev - Laboratorijska

lestvica lastnosti gorljivosti (vnetljivosti) - Zahteve in preskusna metoda (ISO/DIS

340:2020)

Conveyor belts - Laboratory scale flammability characteristics - Requirements and test

method (ISO/DIS 340:2020)
Fördergurte - Brandverhalten unter Laborbedingungen - Anforderungen und
Prüfverfahren (ISO/DIS 340:2020)

Courroies transporteuses - Caractéristiques d'inflammabilité d'échelle de laboratoire -

Exigences et méthode d'essai (ISO/DIS 340:2020)
Ta slovenski standard je istoveten z: prEN ISO 340
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
oSIST prEN ISO 340:2021 en,fr,de

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

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oSIST prEN ISO 340:2021
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oSIST prEN ISO 340:2021
DRAFT INTERNATIONAL STANDARD
ISO/DIS 340
ISO/TC 41/SC 3 Secretariat: SAC
Voting begins on: Voting terminates on:
2020-11-30 2021-02-22
Conveyor belts — Laboratory scale flammability
characteristics — Requirements and test method

Courroies transporteuses — Caractéristiques d'inflammabilité d'échelle de laboratoire — Exigences et

méthode d'essai
ICS: 13.220.40; 53.040.20
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 340:2020(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. ISO 2020
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oSIST prEN ISO 340:2021
ISO/DIS 340:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020

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]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
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oSIST prEN ISO 340:2021
ISO/DIS 340:2020(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 ........................................................................................................................................................... 5

5.7 Procedure .................................................................................................................................................................................................... 6

5.8 Expression of results .......................................................................................................................................................................... 6

6 Test report ................................................................................................................................................................................................................... 6

Bibliography ................................................................................................................................................................................................................................ 7

© ISO 2020 – All rights reserved iii
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oSIST prEN ISO 340:2021
ISO/DIS 340:2020(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.

This fifth edition cancels and replaces the fourth edition (ISO 340:2013), which has been technically

revised.
The main changes compared to the previous edition are as follows:
— Normative references updated
— Definition of “afterglow” 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 © ISO 2020 – All rights reserved
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oSIST prEN ISO 340:2021
DRAFT INTERNATIONAL STANDARD ISO/DIS 340:2020(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 International Standard 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, 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.

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