SIST EN ISO 10460:2018

SLOVENSKI STANDARD
SIST EN ISO 10460:2018
01-december-2018
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Gas cylinders - Welded aluminium-alloy, carbon and stainless steel gas cylinders -
Periodic inspection and testing (ISO 10460:2018)
Gasflaschen - Geschweißte Gasflaschen aus Aluminiumlegierung, Kohlenstoff- sowie
rostfreiem Stahl - Wiederkehrende Prüfung (ISO 10460:2018)
Bouteilles à gaz - Bouteilles à gaz soudées en alliage d'aluminium, carbone et acier
inoxydable - Contrôles et essais périodiques (ISO 10460:2018)
Ta slovenski standard je istoveten z: EN ISO 10460:2018
ICS:
23.020.35 Plinske jeklenke Gas cylinders
77.150.10 Aluminijski izdelki Aluminium products
SIST EN ISO 10460:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 10460:2018

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SIST EN ISO 10460:2018


EN ISO 10460
EUROPEAN STANDARD

NORME EUROPÉENNE

October 2018
EUROPÄISCHE NORM
ICS 23.020.35
English Version

Gas cylinders - Welded aluminium-alloy, carbon and
stainless steel gas cylinders - Periodic inspection and
testing (ISO 10460:2018)
Bouteilles à gaz - Bouteilles à gaz soudées en alliage Gasflaschen - Geschweißte Gasflaschen aus
d'aluminium, carbone et acier inoxydable - Contrôles et Aluminiumlegierung, Kohlenstoffstahl und Edelstahl -
essais périodiques (ISO 10460:2018) Wiederkehrende Inspektion und Prüfung (ISO
10460:2018)
This European Standard was approved by CEN on 8 September 2018.

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: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 10460:2018 E
worldwide for CEN national Members.

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SIST EN ISO 10460:2018
EN ISO 10460:2018 (E)
Contents Page
European foreword . 3

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SIST EN ISO 10460:2018
EN ISO 10460:2018 (E)
European foreword
This document (EN ISO 10460:2018) 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 April 2019, and conflicting national standards shall be
withdrawn at the latest by April 2019.
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, 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 10460:2018 has been approved by CEN as EN ISO 10460:2018 without any modification.

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SIST EN ISO 10460:2018

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SIST EN ISO 10460:2018
INTERNATIONAL ISO
STANDARD 10460
Third edition
2018-09
Gas cylinders — Welded aluminium-
alloy, carbon and stainless steel gas
cylinders — Periodic inspection and
testing
Bouteilles à gaz — Bouteilles à gaz soudées en alliage d'aluminium,
carbone et acier inoxydable — Contrôles et essais périodiques
Reference number
ISO 10460:2018(E)
©
ISO 2018

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SIST EN ISO 10460:2018
ISO 10460:2018(E)

COPYRIGHT PROTECTED DOCUMENT
© 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: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved

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SIST EN ISO 10460:2018
ISO 10460:2018(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Intervals between periodic inspection and testing . 2
5 Periodic inspection and testing procedures . 2
5.1 General . 2
5.2 Depressurization and devalving procedures . 3
5.2.1 Depressurization . 3
5.2.2 Devalving . 3
5.3 External visual inspection . 3
5.3.1 General. 3
5.3.2 Preparation . 3
5.3.3 Procedure . 4
5.3.4 Inspection result . 4
5.4 Internal visual inspection . 5
5.4.1 General. 5
5.4.2 Preparation . 5
5.4.3 Cleaning . 5
5.4.4 Inspection result . 5
5.5 Cylinder neck inspection . 6
5.5.1 Cylinder-to-valve threads . 6
5.5.2 Other neck surfaces . 6
5.5.3 Neckring and/or collar attachment . 7
5.6 Pressure test . 7
5.6.1 General. 7
5.6.2 Test equipment . 8
5.6.3 Test criteria . 8
5.6.4 Acceptance criteria . 9
5.7 Cylinder repair . 9
5.7.1 General. 9
5.7.2 Major repairs . 9
5.7.3 Minor repairs . 9
5.8 Inspection of valve and other accessories . 9
5.9 Final operations . 9
5.9.1 Drying, cleaning, painting and coating. 9
5.9.2 Cylinder revalving .10
5.9.3 Cylinder tare check .10
5.9.4 Cylinder marking after periodic inspection and testing .10
5.9.5 Reference to next periodic inspection and testing date .11
5.9.6 Reports .11
5.10 Rejection and rendering cylinders unserviceable .11
Annex A (informative) Intervals between periodic inspections and tests .13
Annex B (informative) Gas cylinder periodic inspection date rings .14
Annex C (normative) Description and evaluation of imperfections and conditions for
rejection at visual inspection .15
Annex D (informative) Gases corrosive to carbon steel cylinders .21
Bibliography .22
© ISO 2018 – All rights reserved iii

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SIST EN ISO 10460:2018
ISO 10460:2018(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 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 58, Gas cylinders, Subcommittee SC 4,
Operational requirements of gas cylinders.
This third edition cancels and replaces the second edition (ISO 10460:2005), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— inclusion of text to evaluate welded aluminium-alloy and welded stainless steel cylinders;
— removal of conformity assessment requirements;
— deletion of text on blocked valves as this edition now references a specific standard.
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.
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SIST EN ISO 10460:2018
ISO 10460:2018(E)

Introduction
This document contains requirements that reflect current practice and experience.
This document provides information and procedures for the periodic inspection and testing of welded
cylinders and the condition of the test equipment. The principal aim of periodic inspection and testing
is that at the satisfactory completion of the inspection the cylinders may be reintroduced into service
for a further period of time.
[1]
This document has been written so that it is suitable to be referenced in the UN Model Regulations .
© ISO 2018 – All rights reserved v

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SIST EN ISO 10460:2018

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SIST EN ISO 10460:2018
INTERNATIONAL STANDARD ISO 10460:2018(E)
Gas cylinders — Welded aluminium-alloy, carbon and
stainless steel gas cylinders — Periodic inspection and
testing
CAUTION — Some of the tests and procedures 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 welded aluminium-
alloy, carbon and stainless steel gas cylinders of water capacity from 0,5 l to 150 l intended for
compressed and liquefied gas service under pressure and to verify the integrity of such gas cylinders
for further service.
It also applies, as far as is practical, to cylinders of less than 0,5 l water capacity and greater than 150 l
up to 450 l.
This document does not apply to the periodic inspection and testing of acetylene cylinders or composite
(fully wrapped or hoop-wrapped) cylinders.
It is primarily intended for use with cylinders containing industrial gases other than liquefied
petroleum gas (LPG). This document may also be applicable to LPG. Requirements for LPG applications
are also provided in ISO 10464.
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 10286, Gas cylinders — Terminology
ISO 11114-1, Gas cylinders — Compatibility of cylinder and valve materials with gas contents — Part 1:
Metallic materials
ISO 11114-2, Gas cylinders — Compatibility of cylinder and valve materials with gas contents — Part 2:
Non-metallic materials
ISO 11621, Gas cylinders — Procedures for change of gas service
ISO 13341, Gas cylinders — Fitting of valves to gas cylinders
ISO 13769, Gas cylinders — Stamp marking
ISO 22434, Transportable gas cylinders — Inspection and maintenance of cylinder valves
ISO 25760, Gas cylinders — Operational procedures for the safe removal of valves from gas cylinders
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 10286 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
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SIST EN ISO 10460:2018
ISO 10460:2018(E)

— IEC Electropedia: available at https: //www .electropedia .org/
4 Intervals between periodic inspection and testing
A cylinder shall be due for periodic inspection and testing on its first receipt by a filler following the
expiry of the established interval, e.g., in accordance with national or international regulations or, in
the absence of such regulations, in accordance with the UN Model Regulations (packaging instruction
[1]
P200) . The inspection and test expiry date is based on the last test date stamped on the cylinder.
Annex A provides typical periodic inspection intervals. Annex B provides one example of an existing
system to indicate the next periodic inspection date. Other systems are in use.
Provided there is no evidence that the cylinder has been subjected to abusive and/or abnormal
conditions (e.g. being involved in an accident, being exposed to excessive heat or other severe conditions)
that would render the cylinder unsafe, there is no requirement for the user to return the cylinder for
inspection and test before the contents have been used even though the periodic inspection and testing
interval has lapsed. However, it is recommended that the user be advised by the supplier to return the
cylinder to the supplier once it is empty or if the cylinder is no longer needed by the user.
Shorter periodic inspection intervals than those shown in Annex A may be considered for applications
where the cylinder could be exposed to severe conditions (e.g. marine service).
5 Periodic inspection and testing procedures
5.1 General
This document requires that well-trained and competent inspectors, who consult the cylinder’s
manufacturer if there are any doubts about aspects of the standard, undertake the work as described
in this document so that the cylinder manufacturer's current recommendations are taken into account.
Tests and examinations performed to demonstrate compliance with this document shall be conducted
using instruments calibrated before being put into service and thereafter according to an established
programme.
All cylinders shall undergo periodic inspection and testing. The procedures outlined in 5.2 and 5.3 shall
be performed first and in the order presented. The tests and procedures outlined in 5.4, 5.5, 5.6, 5.7,
5.8 and 5.9 shall be performed after 5.2 and 5.3 and in any order. However, the order of the tests and
procedures presented in this document is recommended.
Some procedures outlined in the following subclauses (e.g. 5.2, 5.3.2) are for preparations prior to but
not part of periodic inspection.
Cylinders that fail a periodic inspection shall be rejected (the requirements set out in 5.10 and Annex C
describe the actions to be taken if a cylinder is rejected).
If the condition of a cylinder that has passed the tests described in 5.2, 5.3, 5.4, 5.5, 5.6 and 5.8 remains
in doubt, additional tests shall be performed to confirm its suitability for continued service or the
cylinder shall be rendered unserviceable in accordance with 5.10.
Depending on the reason for rejection, some cylinders may be returned to service. The requirements
for returning a rejected cylinder to service are provided in 5.7 and Annex C.
The mechanical properties of cylinders meeting the requirements of this document can be affected by
heat. Therefore, the maximum temperature for any operation shall be limited to prevent any adverse
effects on the performance of the cylinder when it is returned to service.
Before any work can be carried out, the relevant cylinder data (e.g. the requirements in ISO 13769), its
contents and its ownership shall be identified and the owner shall authorize the retest. Cylinders with
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SIST EN ISO 10460:2018
ISO 10460:2018(E)

incorrect or illegible markings, unknown gas contents or those that cannot be safely emptied of gas
shall be set aside for special handling.
If the cylinder contents are identified as hydrogen or any other embrittling gas, only those cylinders
manufactured or qualified for hydrogen service shall be used (see ISO 11114-1). It shall be confirmed
that the cylinder is compatible for hydrogen service (e.g. cylinders marked in accordance with
ISO 13769 are stamped H). Cylinders that have been used in hydrogen service but not stamped H shall
be removed from this service and their suitability for continued use shall be evaluated in accordance
with ISO 11621.
5.2 Depressurization and devalving procedures
5.2.1 Depressurization
Before performing any tests, cylinders shall be depressurized and emptied in a safe, controlled manner
(e.g. using a safe and environmentally friendly venting system). Particular attention shall be given to
cylinders containing flammable, oxidizing or toxic gases.
Cylinders that have contained a toxic or flammable gas shall be made safe (e.g. by purging with a
suitable gas) before carrying out any further operations or inspections.
Refrigerant gases (e.g. chlorofluorocarbons) shall not be released to the atmosphere.
5.2.2 Devalving
WARNING — The uncontrolled removal of a valve from a cylinder can lead to serious injury,
death or property damage.
A positive check shall be performed before removing any pressure-retaining accessories (e.g. the
cylinder valve or a flange) to ensure that the cylinder does not contain any gas under pressure. A gas
retention check shall be performed in accordance with ISO 25760.
Cylinders with inoperative or blocked valves shall be handled in accordance with ISO 25760.
After the requirements described in 5.2.1 and 5.2.2 have been met, the cylinder valve can be removed.
5.3 External visual inspection
5.3.1 General
An initial external visual inspection shall be performed on all cylinders before the removal of any paint
or coatings to detect whether the cylinders have been subjected to abusive and/or abnormal conditions
(e.g. being involved in an accident, being exposed to excessive heat or other severe conditions) that
would render them unsafe. If a cylinder appears to be damaged, the damage shall be assessed in
accordance with Annex C.
5.3.2 Preparation
Each cylinder shall be clean and have all loose coatings (e.g. corrosion products, tar, oil or other foreign
matter) removed from its external surface (e.g. by brushing, shot-blasting [under closely controlled
conditions], water jet abrasive cleaning or chemical cleaning). The presence of any corrosion products
on external or internal surfaces of the cylinder should be noted prior to cleaning.
Externally mounted carrying handles or shrouds that interfere with a complete external visual
inspection shall be removed before this inspection is carried out.
The method used to clean the cylinder shall be a validated, controlled process and care shall be taken
at all times to avoid damage to the cylinder or the removal of excess amounts of cylinder wall. When
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SIST EN ISO 10460:2018
ISO 10460:2018(E)

selecting the shot-blasting medium and the process parameters to be used, consider the following to
ensure that as far as practicable only the surface coating or contamination is removed from the cylinder:
— medium hardness and shape;
— medium delivery pressure and volume flow rate;
— angle of impingement of the medium onto the surface of the cylinder;
— the temperature of the process itself, including monitoring the temperature of the cylinder surface
to maintain it within acceptable limits when a heat source is used.
A cylinder coating (e.g. fused nylon, polyethylene) that is either damaged or prevents a complete
external visual inspection shall be removed. If the coating is removed by the application of heat, in no
case shall the temperature of the cylinder exceed:
a) 300 °C for carbon and stainless steel cylinders;
b) 80 °C for aluminium-alloy cylinders manufactured from non-heat-treated alloys (e.g. AA5283). For
temperatures between 70 °C and 80 °C, the exposure time shall be limited to 30 min. If the heat
exposure time exceeds 30 min at temperatures greater than or equal to 70 °C, or if at any time the
temperature exceeds 80 °C, then agreement shall be obtained from the manufacturer regarding
further use of the cylinder;
c) 175 °C for aluminium-alloy cylinders manufactured from AA 6XXX heat-treated alloys (e.g.
AA
...