EN ISO 10156:2017

SLOVENSKI STANDARD
01-maj-2018
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SIST EN ISO 10156:2010
SIST EN ISO 10156:2010/AC:2010
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Gas cylinders - Gases and gas mixtures - Determination of fire potential and oxidizing
ability for the selection of cylinder valve outlets (ISO 10156:2017)
Gasflaschen - Gase und Gasgemische - Bestimmung der Brennbarkeit und des
Oxidationsvermögens zur Auswahl von Ventilausgängen (ISO 10156:2017)
Bouteilles à gaz - Gaz et mélanges de gaz - Détermination du potentiel d'inflammabilité
et d'oxydation pour le choix des raccords de sortie de robinets (ISO 10156:2017)
Ta slovenski standard je istoveten z: EN ISO 10156:2017
ICS:
23.020.35 Plinske jeklenke Gas cylinders
71.100.20 Industrijski plini Gases for industrial
application
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 10156
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2017
EUROPÄISCHE NORM
ICS 23.020.35; 71.100.20 Supersedes EN ISO 10156:2010
English Version
Gas cylinders - Gases and gas mixtures - Determination of
fire potential and oxidizing ability for the selection of
cylinder valve outlets (ISO 10156:2017)
Bouteilles à gaz - Gaz et mélanges de gaz - Gasflaschen - Gase und Gasgemische - Bestimmung der
Détermination du potentiel d'inflammabilité et Brennbarkeit und des Oxidationsvermögens zur
d'oxydation pour le choix des raccords de sortie de Auswahl von Ventilausgängen (ISO 10156:2017)
robinets (ISO 10156:2017)
This European Standard was approved by CEN on 19 August 2017.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 10156:2017 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 10156:2017) has been prepared by Technical Committee ISO/TC 58 “Gas
cylinders” in collaboration with Technical Committee CEN/TC 23 “Transportable gas cylinders” the
secretariat of which is held by BSI.
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 February 2018, and conflicting national standards
shall be withdrawn at the latest by February 2018.
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 10156:2010.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
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, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 10156:2017 has been approved by CEN as EN ISO 10156:2017 without any modification.
INTERNATIONAL ISO
STANDARD 10156
Fourth edition
2017-07
Gas cylinders — Gases and gas
mixtures — Determination of fire
potential and oxidizing ability for the
selection of cylinder valve outlets
Bouteilles à gaz — Gaz et mélanges de gaz — Détermination du
potentiel d’inflammabilité et d’oxydation pour le choix des raccords de
sortie de robinets
Reference number
ISO 10156:2017(E)
©
ISO 2017
ISO 10156:2017(E)
© ISO 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
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ii © ISO 2017 – All rights reserved

ISO 10156:2017(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions, symbols and units . 1
4 Flammability of gases and gas mixtures in air . 3
4.1 General . 3
4.2 Test method . 3
4.2.1 Key points concerning safety . 3
4.2.2 Principle . 4
4.2.3 Test apparatus and materials . 4
4.2.4 Procedure for determination of flammability . 5
4.2.5 Procedure for determination of flammability limits . . 5
4.2.6 Results for pure gases . . 5
4.3 Calculation method for flammability of gas mixtures containing n flammable gases
and p inert gases . 8
4.4 Examples .11
4.5 Calculation method for lower flammability limit of gas mixtures .12
4.5.1 General.12
4.5.2 Mixtures of flammable gases and mixtures of flammable gases with
nitrogen and/or air .13
4.5.3 Mixtures of flammable gases with inert gases other than nitrogen and air .13
4.6 Examples .13
4.7 Classification according to the Globally Harmonized System (GHS) .15
5 Oxidizing power of gases and gas mixtures .15
5.1 General .15
5.2 Test method .15
5.2.1 Key points concerning safety .15
5.2.2 Principle .15
5.2.3 Test apparatus .16
5.2.4 Procedure .19
5.2.5 Results .19
5.3 Calculation method .19
5.3.1 Principle .19
5.3.2 C coefficients .20
i
6 Mixtures containing oxygen and flammable gases .21
6.1 General .21
6.2 Basis of flammability classification .22
6.3 Examples .24
Annex A (informative) Classification according to the Globally Harmonized System (GHS) .26
Bibliography .27
ISO 10156:2017(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
des
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