Gas cylinders - High pressure cylinders for the on-board storage of natural gas as a fuel for automotive vehicles - Amendment 1 (ISO 11439:2013/Amd 1:2021)

2019-02-18: WI changed from revision to Amendment further to same change at ISO

Gasflaschen - Hochdruck-Flaschen für die fahrzeuginterne Speicherung von Erdgas als Treibstoff für Kraftfahrzeuge - Änderung 1 (ISO 11439:2013/Amd 1:2021)

No scope available

Bouteilles à gaz - Bouteilles haute pression pour le stockage de gaz naturel utilisé comme carburant à bord des véhicules automobiles - Amendement 1 (ISO 11439:2013/Amd 1:2021)

Plinske jeklenke - Visokotlačne jeklenke za zemeljski plin za pogon motornih vozil, vgrajene na vozilo - Dopolnilo A1 (ISO 11439:2013/Amd 1:2021)

General Information

Status
Published
Public Enquiry End Date
01-Dec-2020
Publication Date
12-Dec-2021
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
08-Dec-2021
Due Date
12-Feb-2022
Completion Date
13-Dec-2021

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SLOVENSKI STANDARD
SIST EN ISO 11439:2013/A1:2022
01-januar-2022

Plinske jeklenke - Visokotlačne jeklenke za zemeljski plin za pogon motornih vozil,

vgrajene na vozilo - Dopolnilo A1 (ISO 11439:2013/Amd 1:2021)

Gas cylinders - High pressure cylinders for the on-board storage of natural gas as a fuel

for automotive vehicles - Amendment 1 (ISO 11439:2013/Amd 1:2021)

Gasflaschen - Hochdruck-Flaschen für die fahrzeuginterne Speicherung von Erdgas als

Treibstoff für Kraftfahrzeuge - Änderung 1 (ISO 11439:2013/Amd 1:2021)

Bouteilles à gaz - Bouteilles haute pression pour le stockage de gaz naturel utilisé

comme carburant à bord des véhicules automobiles - Amendement 1 (ISO
11439:2013/Amd 1:2021)
Ta slovenski standard je istoveten z: EN ISO 11439:2013/A1:2021
ICS:
23.020.35 Plinske jeklenke Gas cylinders
43.060.40 Sistemi za gorivo Fuel systems
SIST EN ISO 11439:2013/A1:2022 en,fr,de

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

---------------------- Page: 1 ----------------------
SIST EN ISO 11439:2013/A1:2022
---------------------- Page: 2 ----------------------
SIST EN ISO 11439:2013/A1:2022
EN ISO 11439:2013/A1
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2021
EUROPÄISCHE NORM
ICS 23.020.35; 43.060.40
English Version
Gas cylinders - High pressure cylinders for the on-board
storage of natural gas as a fuel for automotive vehicles -
Amendment 1 (ISO 11439:2013/Amd 1:2021)

Bouteilles à gaz - Bouteilles haute pression pour le Gasflaschen - Hochdruck-Flaschen für die

stockage de gaz naturel utilisé comme carburant à bord fahrzeuginterne Speicherung von Erdgas als Treibstoff

des véhicules automobiles - Amendement 1 (ISO für Kraftfahrzeuge - Änderung 1 (ISO

11439:2013/Amd 1:2021) 11439:2013/Amd 1:2021)

This amendment A1 modifies the European Standard EN ISO 11439:2013; it was approved by CEN on 15 August 2021.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of

this amendment into the relevant 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 amendment 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

© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11439:2013/A1:2021 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 11439:2013/A1:2022
EN ISO 11439:2013/A1:2021 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

---------------------- Page: 4 ----------------------
SIST EN ISO 11439:2013/A1:2022
EN ISO 11439:2013/A1:2021 (E)
European foreword

This document (EN ISO 11439:2013/A1:2021) 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 May 2022, and conflicting national standards shall be

withdrawn at the latest by May 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.

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 11439:2013/Amd 1:2021 has been approved by CEN as EN ISO 11439:2013/A1:2021

without any modification.
---------------------- Page: 5 ----------------------
SIST EN ISO 11439:2013/A1:2022
---------------------- Page: 6 ----------------------
SIST EN ISO 11439:2013/A1:2022
INTERNATIONAL ISO
STANDARD 11439
Second edition
2013-06-01
AMENDMENT 1
2021-10
Gas cylinders — High pressure
cylinders for the on-board storage of
natural gas as a fuel for automotive
vehicles
AMENDMENT 1
Bouteilles à gaz — Bouteilles haute pression pour le stockage de gaz
naturel utilisé comme carburant à bord des véhicules automobiles
AMENDEMENT 1
Reference number
ISO 11439:2013/Amd.1:2021(E)
© ISO 2021
---------------------- Page: 7 ----------------------
SIST EN ISO 11439:2013/A1:2022
ISO 11439:2013/Amd.1:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021

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
© ISO 2021 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 11439:2013/A1:2022
ISO 11439:2013/Amd.1:2021(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 3,

Cylinder design, in collaboration with the European Committee for Standardization (CEN) Technical

Committee CEN/TC 23, Transportable gas cylinders, in accordance with the Agreement on technical

cooperation between ISO and CEN (Vienna Agreement).

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.
iii
© ISO 2021 – All rights reserved
---------------------- Page: 9 ----------------------
SIST EN ISO 11439:2013/A1:2022
---------------------- Page: 10 ----------------------
SIST EN ISO 11439:2013/A1:2022
ISO 11439:2013/Amd.1:2021(E)
Gas cylinders — High pressure cylinders for the on-board
storage of natural gas as a fuel for automotive vehicles
AMENDMENT 1
Clause 2

Remove the dates from the following normative references in Clause 2 and where they are cited in the

document text:

ASTM D1308, Standard Test Method for Effect of Household Chemicals on Clear and Pigmented Organic

Finishes

ASTM D2794, Standard Test Method for Resistance of Organic Coatings to the Effects of Rapid Deformation

(Impact)
ASTM D3170, Standard Test Method for Chipping Resistance of Coatings

ASTM G154, Standard Practice for Operating Fluorescent Light Apparatus for UV Exposure of Nonmetallic

Materials

NACE/TM 0177, Laboratory Testing of Metals for Resistance to Sulfide Stress Cracking and Stress Corrosion

Cracking in H2S Environments
7.5.2.2 c)
Add a sentence to the end of the paragraph in item c) as follows:

The actual tensile strength of the steel according to A.1 shall not exceed the value obtained by more

than 5 % on the samples tested for sulfide stress cracking resistance.
7.6.2.1
Delete list item 4) and renumber list item 5) as 4).
8.2.3.1
Replace the second paragraph with the following:

The glass transition temperature of the resin material shall be determined in accordance with

ASTM D3418, and shall not be less than 102 °C.
8.5.2.2 c)
Add a sentence to the end of the paragraph in item c) as follows:

The actual tensile strength of the steel according to A.1 shall not exceed the value obtained by more

than 5 % on the samples tested for sulfide stress cracking resistance.
© ISO 2021 – All rights reserved
---------------------- Page: 11 ----------------------
SIST EN ISO 11439:2013/A1:2022
ISO 11439:2013/Amd.1:2021(E)
8.5.2.11
Replace the paragraph with the following:

In designs where glass or aramid fibre has a load sharing application, one cylinder shall be tested in

accordance with A.18.
8.6.2.1
Delete list item b) 4).
9.2.3.1
Replace the final sentence with the following:

The glass transition temperature of the resin material shall be determined in accordance with

ASTM D3418, and shall not be less than 102 °C.
9.4.5

In the first paragraph, correct the name of the test from “acid environment” to “environmental”, as

follows:

The exterior of cylinders shall meet the requirements of the environmental test described in A.14.

9.5.2.2 c)
Add a sentence to the end of the paragraph in item c) as follows:

The actual tensile strength of the steel according to A.1 shall not exceed the value obtained by more

than 5 % on the samples tested for sulfide stress cracking resistance.
9.5.2.11
Replace the paragraph with the following:

In designs where glass or aramid fibre has a load sharing application, one cylinder shall be tested in

accordance with A.18.
9.6.2
Delete list item d).
10.2.2
Replace the second paragraph with the following:

The glass transition temperature of the resin material shall be determined in accordance with

ASTM D3418, and shall not be less than 102 °C.
© ISO 2021 – All rights reserved
---------------------- Page: 12 ----------------------
SIST EN ISO 11439:2013/A1:2022
ISO 11439:2013/Amd.1:2021(E)
10.5.2.10
Replace the paragraph with the following:

In designs where glass or aramid fibre has a load sharing application, one cylinder shall be tested in

accordance with A.18.
A.6
Replace the first paragraph with the following:

Three finished cylinders shall be pressure cycled between less than or equal to 20 bar and greater than

or equal to 1,5 × working pressure, at a rate not exceeding 10 cycles per minute in accordance with A.13.

A.7
Replace list items a), b) and d) with the following:

a) Condition for more than 48 h at zero pressure, 65 °C or higher, and 95 % or greater relative

humidity. The intent of this relative humidity requirement shall be deemed met by spraying with a

fine spray or mist of water in a chamber held at a minimum 65 °C.

b) Hydrostatically pressurize for 500 cycles multiplied by the specified service life in years between

less than or equal to 20 bar and greater than or equal to 260 bar at 65 °C or higher, and 95 % or

greater relative humidity.

d) Pressurize from less than or equal to 20 bar to greater than or equal to 200 bar for 500 cycles

multiplied by the specified service life in years at –40 °C or lower. Adequate recording

instrumentation shall be provided to ensure
...

SLOVENSKI STANDARD
SIST EN ISO 11439:2013/oprA1:2020
01-november-2020

Plinske jeklenke - Visokotlačne jeklenke za zemeljski plin za pogon motornih vozil,

vgrajene na vozilo - Dopolnilo A1 (ISO 11439:2013/DAM 1:2020)

Gas cylinders - High pressure cylinders for the on-board storage of natural gas as a fuel

for automotive vehicles - Amendment 1 (ISO 11439:2013/DAM 1:2020)

Gasflaschen - Hochdruck-Flaschen für die fahrzeuginterne Speicherung von Erdgas als

Treibstoff für Kraftfahrzeuge - Änderung 1 (ISO 11439:2013/DAM 1:2020)

Bouteilles à gaz - Bouteilles haute pression pour le stockage de gaz naturel utilisé

comme carburant à bord des véhicules automobiles - Amendement 1 (ISO
11439:2013/DAM 1:2020)
Ta slovenski standard je istoveten z: EN ISO 11439:2013/prA1
ICS:
23.020.35 Plinske jeklenke Gas cylinders
43.060.40 Sistemi za gorivo Fuel systems
SIST EN ISO 11439:2013/oprA1:2020 en,fr,de

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

---------------------- Page: 1 ----------------------
SIST EN ISO 11439:2013/oprA1:2020
---------------------- Page: 2 ----------------------
SIST EN ISO 11439:2013/oprA1:2020
DRAFT AMENDMENT
ISO 11439:2013/DAM 1
ISO/TC 58/SC 3 Secretariat: BSI
Voting begins on: Voting terminates on:
2020-10-01 2020-12-24
Gas cylinders — High pressure cylinders for the on-board
storage of natural gas as a fuel for automotive vehicles
AMENDMENT 1

Bouteilles à gaz — Bouteilles haute pression pour le stockage de gaz naturel utilisé comme carburant à

bord des véhicules automobiles
AMENDEMENT 1
ICS: 43.060.40; 23.020.35
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 11439:2013/DAM 1:2020(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
---------------------- Page: 3 ----------------------
SIST EN ISO 11439:2013/oprA1:2020
ISO 11439:2013/DAM 1:2020(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: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
---------------------- Page: 4 ----------------------
SIST EN ISO 11439:2013/oprA1:2020
ISO 11439:2013/DAM 1:2020(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 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 3,

Cylinder design.
© ISO 2020 – All rights reserved iii
---------------------- Page: 5 ----------------------
SIST EN ISO 11439:2013/oprA1:2020
---------------------- Page: 6 ----------------------
SIST EN ISO 11439:2013/oprA1:2020
ISO 11439:2013/DAM 1:2020(E)
Gas cylinders — High pressure cylinders for the on-board
storage of natural gas as a fuel for automotive vehicles
AMENDMENT 1
2 Normative references
Eliminating dates on standards so that latest versions are required:

ASTM D522, Standard Test Methods for Mandrel Bend Test of Attached Organic Coatings

ASTM D1308, Standard Test Method for Effect of Household Chemicals on Clear and Pigmented Organic

Finishes

ASTM D2794, Standard Test Method for Resistance of Organic Coatings to the Effects of Rapid Deformation

(Impact)
ASTM D3170, Standard Test Method for Chipping Resistance of Coatings

ASTM G154, Standard Practice for Operating Fluorescent Light Apparatus for UV Exposure of Nonmetallic

Materials

NACE/TM 0177, Laboratory Testing of Metals for Resistance to Sulfide Stress Cracking and Stress Corrosion

Cracking in H2S Environments
7.5.2.2 Material tests for steel cylinders
a) Tensile test

Steel from a finished cylinder shall meet the requirements of the tensile test in A.1.

b) Impact test

Steel from a finished cylinder shall meet the requirements of the impact test in A.2.

c) Sulfide stress cracking resistance test

If the upper limit of the specified tensile strength for the steel exceeds 950 MPa, the steel from a finished

cylinder shall meet the requirements of the sulfide stress cracking resistance test in A.3. The actual tensile

strength of the steel according to A.1, shall not exceed the value obtained by more than 5%, on the samples

tested for SSC resistance.
7.6.2.1 Batch tests
Tests shall be carried out on each batch of cylinders:
a) on one cylinder, one hydrostatic pressure burst test in accordance with A.12.

b) on a further cylinder, or a heat treated witness sample representative of a finished cylinder:

1) a check of the critical dimensions against the design (see 6.4.1);
© ISO 2020 – All rights reserved 1
---------------------- Page: 7 ----------------------
SIST EN ISO 11439:2013/oprA1:2020
ISO 11439:2013/DAM 1:2020(E)

2) one tensile test in accordance with A.1; the test results shall satisfy the requirements of the design

(see 6.4.1);

3) for steel cylinders, three impact tests in accordance with A.2; the test results shall satisfy the

requirements specified in A.2;

4) when a protective coating is a part of the design, a coating batch test in accordance with A.24.

Where the coating fails to meet the requirements of A.24, the batch shall be 100 % inspected to

remove cylinders with similar defective coatings. The coating on all defectively coated cylinders

may be stripped and recoated. The coating batch test shall then be repeated.
8.2.3.1 Resins

The material for impregnation may be thermosetting or thermoplastic resins. Examples of suitable matrix

materials are epoxy, modified epoxy, polyester and vinyl ester thermosetting plastics, and polyethylene and

polyamide thermoplastic material.

The glass transition temperature of the resin material shall be determined in accordance with ASTM D3418,

and shall not be less than 102 °C.
8.5.2.2 Material tests for steel liners
a) Tensile test

Steel from a finished liner shall meet the requirements of the tensile test in A.1.

b) Impact test

Steel from a finished liner shall meet the requirements of the impact test in A.2..

c) Sulfide stress cracking resistance test

If the upper limit of the specified tensile strength for the steel exceeds 950 MPa, the steel from a finished

liner shall meet the requirements of the sulfide stress cracking resistance test in A.3. The actual tensile

strength of the steel according to A.1, shall not exceed the value obtained by more than 5%, on the samples

tested for SSC resistance.
8.5.2.11 High temperature creep test

In designs where glass or aramid fibre has a load sharing application, one cylinder shall be tested in

accordance with A.18.
8.6.3.1 Liner tests
d) on one liner, one hydrostatic pressure burst test in accordance with A.12.
e) on a further liner, or heat treated sample representative of a liner:
1) a check of the critical dimensions against the design (see 6.1.3.1);

2) one tensile test in accordance with A.1; the test results shall satisfy the requirements of the design

(see 6.1.3.1);

3) three impact tests in accordance with A.2; the test results shall satisfy the requirements

specified in A.2;
2 © ISO 2020 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 11439:2013/oprA1:2020
ISO 11439:2013/DAM 1:2020(E)

All liners represented by a batch test that fails to meet the specified requirements shall follow the procedures

specified in 8.9.
9.2.3.1 Resins

The material for impregnation may be thermosetting or thermoplastic resins. Examples of suitable matrix

materials are epoxy, modified epoxy, polyester and vinyl ester thermosetting plastics, and polyethylene

and polyamide thermoplastic material. The glass transition temperature of the resin material shall be

determined in accordance with ASTM D3418, and shall not be less than 102 °C.
9.5.2.2 Material tests for steel liners
a) Tensile test

Steel from a finished cylinder or liner shall meet the requirements of the tensile test in A.1.

b) Impact test

Steel from a finished liner shall meet the requirements of the impact test in A.2.

c) Sulfide stress cracking resistance test

If the upper limit of the specified tensile strength for the steel exceeds 950 MPa, the steel from a finished

liner shall meet the requirements in A.3. The actual tensile strength of the steel according to A.1, shall not

exceed the value obtained by more than 5 %, on the samples tested for SSC resistance.

9.5.2.11 High temperature creep test

In designs where glass or aramid fibre has a load sharing application, one cylinder shall be tested in

accordance with A.18.
9.6.2 Liner tests
On a liner, or heat treated sample representative of a finished liner:
a) a check of the critical dimensions against the design (see 6.1.3.1);

b) one tensile test in accordance with A.1; the test results shall satisfy the requirements of the design (see

6.1.3.1);

c) for steel liners, three impact tests in accordance with A.2; the test results shall satisfy the requirements

specified in A.2;

All liners represented by a batch test that fails to meet the requirements specified shall follow the procedures

specified in 9.9.
10.2.2 Resins

The material for impregnation may be thermosetting or thermoplastic resins. Examples of suitable matrix

materials are epoxy, modified epoxy, polyester and vinyl ester thermosetting plastics, and polyethylene and

polyamide thermoplastic material.

The glass transition temperature of the resin material shall be determined in accordance with ASTM D

3418, and shall not be less than 102 °C.
© ISO 2020 – All rights reserved 3
---------------------- Page: 9 ----------------------
SIST EN ISO 11439:2013/oprA1:2020
ISO 11439:2013/DAM 1:2020(E)
10.5.2.10 High temperature creep test

In designs where glass or aramid fibre has a load sharing application, one cylinder shall be tested in

accordance with A.18.
A.6 Leak-before-break (LBB) test

Three finished cylinders shall be pressure cycled between less than or equal to 20 bar and greater than or

equal to 1.5 × working pressure, at a rate not exceeding 10 cycles per minute in accordance with A.13.

All cylinders shall either fail by leakage or exceed 45 000 pressure cycles.
A.7 Extreme temperature pressure cycling

Finished cylinders, with the composite wrapping free of any protective coating, shall be cycle tested:

a) condition for more than 48 h at zero pressure, 65 °C or higher, and 95 % or greater relative humidity.

The intent of this relative humidity requirement shall be deemed met by spraying with a fine spray or

mist of water in a chamber held at a minimum 65 °C;

b) hydrostatically pressurize for 500 cycles multiplied by the specified service life in years between less

than or equal to 20 bar and greater than or equal to 260 bar at 65 °C or higher, and 95 % or greater

relative humidity;

c) condition the cylinder and fluid at – 40 °C or lower as measured in the fluid and on the cylinder surface;

d) pressurize from less than or equal to 20 bar to greater than or equal to 200 bar for 500 cycles multiplied

by the specified service life in years at – 40 °C or lower. Adequate recording instrumentation shall be

provided to ensure the minimum temperature of the fluid is maintained during the low temperature

cycling. At no time during the pressure cycling shall the fluid be warmer than – 40 °C.

The pressure cycling rate of b) shall not exceed 10 cycles per minute. The pressure cycling rate of d) shall

not exceed 3 cycles per minute unless a pressure transducer is installed directly within the cylinder. All

temperature, pressure, and relative humidity values shall be recorded at least every 6 seconds. Cycles that

fall outside the limits of the pressure, humidity and temperature values, shall be discounted from the total

requirement.

During this pressure cycling, the cylinder shall show no evidence of rupture, leakage or fibre unravelling.

Following pressure cycling at extreme temperatures, cylinders shall be hydrostatically pressured to

failure in accordance with A.12, and achieve a minimum burst pressure of 85 % of the minimum design

burst pressure. For type 4 designs, prior to the hydrostatic burst test the cylinder shall be leak tested in

accordance with A.10.
A.9 Coating tests

These tests are intended to validate a coating system that can be used for the same coating on other designs.

An alternative corrosion test for severe exposure conditions is provided in Annex H.

Coatings shall be evaluated using:

f) Adhesion testing, in accordance with ASTM D3359, using method A or B, as appropriate. The coating

shall exhibit an adhesion rating of either 4A or 4B, as appropriate.
4 © ISO 2020 – All rights reserved
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SIST EN ISO 11439:2013/oprA1:2020
ISO 11439:2013/DAM 1:2020(E)

g) Flexibility, in accordance with ASTM D522-93, using test method B with a 12,7 mm (0,5 in) mandrel at

the specified thickness at - 20 °C. Samples f
...

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