EN ISO 20475:2020

SLOVENSKI STANDARD
01-februar-2021
Plinske jeklenke - Snopi jeklenk - Periodični pregledi in preskusi (ISO 20475:2018)
Gas cylinders - Cylinder bundles - Periodic inspection and testing (ISO 20475:2018)
Gasflaschen - Flaschenbündel - Wiederkehrende Inspektion und Prüfung (ISO
20475:2018)
Bouteilles à gaz - Cadres de bouteilles - Contrôles et essais périodiques (ISO
20475:2018)
Ta slovenski standard je istoveten z: EN ISO 20475:2020
ICS:
23.020.35 Plinske jeklenke Gas cylinders
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 20475
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2020
EUROPÄISCHE NORM
ICS 23.020.35
English Version
Gas cylinders - Cylinder bundles - Periodic inspection and
testing (ISO 20475:2018)
Bouteilles à gaz - Cadres de bouteilles - Contrôles et Gasflaschen - Flaschenbündel - Wiederkehrende
essais périodiques (ISO 20475:2018) Inspektion und Prüfung (ISO 20475:2018)
This European Standard was approved by CEN on 13 December 2020.

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
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 20475:2020 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
The text of ISO 20475:2018 has been prepared by Technical Committee ISO/TC 58 "Gas cylinders” of
the International Organization for Standardization (ISO) and has been taken over as EN ISO 20475:2020
by 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 June 2021, and conflicting national standards shall be
withdrawn at the latest by June 2021.
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.
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 20475:2018 has been approved by CEN as EN ISO 20475:2020 without any modification.

INTERNATIONAL ISO
STANDARD 20475
First edition
2018-02
Gas cylinders — Cylinder bundles —
Periodic inspection and testing
Bouteilles à gaz — Cadres de bouteilles — Contrôles et essais
périodiques
Reference number
ISO 20475:2018(E)
©
ISO 2018
ISO 20475:2018(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.
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Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
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Published in Switzerland
ii © ISO 2018 – All rights reserved

ISO 20475:2018(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Procedures for periodic inspections and tests . 4
4.1 General . 4
4.2 Periodic inspection and tests . 4
5 Inspections and tests. 5
5.1 General . 5
5.2 Identification of cylinders/bundles and preparation for inspections and tests. 5
5.3 Depressurization of manifold and individual cylinders . 5
5.4 Disassembly of the bundle . 6
5.5 Periodic inspection and testing of cylinders . 6
5.6 Inspection of the frame, manifold and valve condition . 6
5.6.1 General. 6
5.6.2 Frame . 6
5.6.3 Manifolds . 6
5.6.4 Valves and fittings . 6
5.7 Bundle reassembly and testing . 7
6 Stamp marking . 7
7 Documentation . 7
Annex A (normative) Additional requirements for the periodic inspection and testing of
acetylene bundles . 9
Bibliography .11
ISO 20475:2018(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 Technical Committee ISO/TC 58, Gas cylinders, Subcommittee SC 4,
Operational requirements for gas cylinders.
iv © ISO 2018 – All rights reserved

ISO 20475:2018(E)
Introduction
The principal aim of a periodic inspection and testing procedure is that, at the completion of the test,
the cylinder bundles may be reintroduced into service for a further period of time.
Periodic inspection and testing of cylinder bundles is carried out in conjunction with the retest period
of the cylinders within the bundle in order to comply with national and regional transport regulations.
If there are any doubts, inspectors should consult the bundle/cylinder's manufacturer so that the
manufacturer's current recommendations are taken into account.
This document is intended to be used under a variety of national regulatory regimes, but has been
[10]
written so that it is suitable for the application of the UN Model Regulations .
In International Standards, weight is equivalent to a force, expressed in Newton. However, in common
parlance (as used in terms defined in this document), the word “weight” continues to be used to mean
mass, although this practice is deprecated (see ISO 80000-4).
INTERNATIONAL STANDARD ISO 20475:2018(E)
Gas cylinders — Cylinder bundles — Periodic inspection
and testing
CAUTION — Some of the tests specified in this document involve the use of processes which
could lead to a hazardous situation.
1 Scope
This document specifies the requirements for the periodic inspection and testing of cylinder bundles
containing compressed, liquefied and dissolved gas.
NOTE Additional requirements for acetylene cylinder bundles are provided in Annex A.
This document also establishes general principles for the maintenance of cylinder bundles.
This document is not applicable to acetylene bundles with solvent-free acetylene cylinders.
This document excludes the requirements for cylinder bundles when they are a part of a battery vehicle.
For some specific ap
...