ISO/FDIS 11326
(Main)Ships and marine technology — Test procedures for liquid hydrogen storage tank of hydrogen ships
Ships and marine technology — Test procedures for liquid hydrogen storage tank of hydrogen ships
This standard specifies test procedures and requirements for the performance test that shall be conducted in order to confirm the mechanical features of the hydrogen storage tank. These test procedures would be prepared to document the function and safety processes required by classification societies, international standards and/or any administration for hydrogen storage tank of hydrogen ships. Functions that are specific to a manufacturer and any additional tests or specification required by client would not be included. This standard provides a test procedure guideline for ship’s hydrogen storage tank in hydrogen ships.
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FINAL DRAFT
International
Standard
ISO/TC 8/SC 3
Ships and marine technology — Test
Secretariat: ANSI
procedures for liquid hydrogen
Voting begins on:
storage tank of hydrogen ships
2024-07-22
Voting terminates on:
2024-09-16
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 SUPPOR TING DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
FINAL DRAFT
International
Standard
ISO/TC 8/SC 3
Ships and marine technology — Test
Secretariat: ANSI
procedures for liquid hydrogen
Voting begins on:
storage tank of hydrogen ships
Voting terminates on:
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 SUPPOR TING DOCUMENTATION.
© ISO 2024
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
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 Reference number
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 2
5 Inspection and tests . 2
5.1 General .2
5.2 Design appraisal .3
5.3 Material inspection.3
5.4 Welding inspection .3
5.5 Hydrostatic test .3
5.6 Tightness test .4
5.7 Insulation and testing .4
5.8 Cold spot test .4
5.9 Visual inspection .5
6 Marking . . 5
7 Test report . 5
Annex A (informative) General considerations for liquefied hydrogen storage tank . 6
Annex B (informative) Inspection and test procedures .11
Annex C (informative) Example of drawing list applicable to design appraisal .13
Annex D (informative) Examples of test report form . 14
Annex E (informative) Example of concept model for liquefied hydrogen storage tank .18
Bibliography .20
iii
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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
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 8, Ships and marine technology, Subcommittee
SC 3, Piping and machinery.
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
Introduction
Hydrogen offers a reliable way to decarbonise a variety of sectors including the maritime industry, where
it has been historically difficult to meaningfully reduce CO emissions despite the commitments by
governments and the implementation of regulatory measures.
There are technologies available that enable hydrogen to be produced, stored, transported and used as
energy in different ways. Various materials can be produced by hydrogen, including renewable energy,
natural gas, coal and oil. Hydrogen can be transported as a gas by pipelines or in liquid form by ship, much
like liquid natural gas (LNG), and transformed into electric energy to provide homes or industry with power
and also into fuels for cars, trucks, ships and planes.
However, the safe and wide use of hydrogen in marine industry faces several challenges, in particular
the absence of applicable international standards on the safety testing of hydrogen systems. All system
components should be designed and tested for the safety and reliability in handling liquid hydrogen and
thereby the facilitation of decarbonisation with the transition into hydrogen-based clean energy.
In this regard, this document sets up a general test requirement for the liquid hydrogen cargo tank of
hydrogen carrier ships. It is expected that useful information can be provided to the marine industry
stakeholders including ship owners, classification societies and shipyards. Finally, this document aims to
contribute to the growth of relevant industries and benefit all related stakeholders.
v
FINAL DRAFT International Standard ISO/FDIS 11326:2024(en)
Ships and marine technology — Test procedures for liquid
hydrogen storage tank of hydrogen ships
1 Scope
This document specifies general inspection and test requirements for liquid hydrogen cargo tanks on
board hydrogen carrier ships. In the cases of liquefied hydrogen containment systems, the testing activity
depends strictly on the type of storage containment technology identified by the International Code for
[1]
the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk (IGC Code). This document is
applicable to Type C independent metallic double wall type tanks with vacuum insulation having a capacity
of not more than 1 000 cubic metres (m ). It is also applicable to liquid hydrogen cargo tanks which are
designed to transport pure para-hydrogen (not less than 95 % content).
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 11114-4, Transportable gas cylinders — Compatibility of cylinder and valve materials with gas contents —
Part 4: Test methods for selecting steels resistant to hydrogen embrittlement
ISO 17636-1, Non-destructive testing of welds — Radiographic testing — Part 1: X- and gamma-ray techniques
with film
ISO 17636-2, Non-destructive testing of welds — Radiographic testing — Part 2: X- and gamma-ray techniques
with digital detectors
ISO 3452-1, Non-destructive testing — Penetrant testing — Part 1: General principles
ISO 9934-1, Non-destructive testing — Magnetic particle testing — Part 1: General principles
ISO 23208, Cryogenic vessels — Cleanliness for cryogenic service
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
design pressure
pressure used to determine minimum scantlings of the liquefied hydrogen (LH ) (3.3) storage tank
3.2
maximum allowable working pressure
MAWP
maximum pressure of a storage tank determined by the tank design code
Note 1 to entry: MAWP should not be less than the design pressure (3.1).
3.3
liquefied hydrogen
LH
LH2
hydrogen that has been cooled and condensed into liquid form
Note 1 to entry: LH2 is a cryogenic liquid having a temperature typically around −253 ° Celsius under normal
atmospheric pressure.
3.4
para-hydrogen
one of the two isomers of the hydrogen molecule where the nuclear spins of the two atoms are opposed
3.5
independent tank
self-supporting tank that does not form part of the ship’s hull and is not essential to the hull strength
Note 1 to entry: The design basis for type C independent tanks i
...
Formatted: Centered
Style Definition: TOC 2
N 850
Style Definition: zzCopyright
ISO/FDIS 11326:2024(Een)
Formatted: French (Switzerland)
Formatted: French (Switzerland)
ISO TC 8/SC 3/WG 19
Formatted: French (Switzerland)
Secretariat: ANSI
Date: 2024-04-1907-08
Ships and marine technology —Test procedures for liquid hydrogen storage tank of hydrogen
Formatted: Don't adjust space between Latin and
ships Asian text, Don't adjust space between Asian text and
numbers
Formatted: Centered
Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no
Formatted: Default Paragraph Font
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’sISO's member body in the country of the requester.
ISO copyright officeCopyright Office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers
Phone: + 41 22 749 01 11
Email: copyright@iso.org
Email: copyright@iso.org
Website: www.iso.orgwww.iso.org
Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers
Published in Switzerland.
ii © ISO 2024 – All rights reserved
Formatted: Centered
Contents
Foreword . iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Abbreviated terms . 3
5 Inspection and tests . 3
5.1 General . 3
5.2 Design appraisal . 3
5.3 Material inspection . 3
5.4 Welding inspection . 4
5.5 Hydrostatic test . 4
5.6 Tightness test . 4
5.7 Insulation and testing . 5
5.8 Cold spot testing. 5
5.9 Visual inspection . 5
6 Marking . 5
7 Test report . 5
Annex A (informative) General considerations for liquefied hydrogen storage tank . 6
Annex B (informative) Inspection and test procedure . 11
Annex C (informative) Example of drawing list applicable to design appraisal . 13
Annex D (informative) Examples of test report form . 14
Annex E (informative) Example of concept model for liquefied hydrogen storage tank . 18
Bibliography . 20
Foreword . v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Abbreviated terms . 2
5 Inspection and tests . 3
5.1 General . 3
5.2 Design appraisal . 3
5.3 Material inspection . 3
5.4 Welding inspection . 4
5.5 Hydrostatic test . 4
Formatted: Normal, Centered, Space After: 24 pt, Tab
5.6 Tightness test . 5
stops: 487.6 pt, Right
5.7 Insulation and testing . 5
Formatted: Font: 9 pt
iii
5.8 Cold spot test . 5
5.9 Visual inspection . 6
6 Marking . 6
7 Test report . 6
Annex A (informative) General considerations for liquefied hydrogen storage tank . 7
Annex B (informative) Inspection and test procedures . 13
Annex C (informative) Example of drawing list applicable to design appraisal . 15
Annex D (informative) Examples of test report form . 16
Annex E (informative) Example of concept model for liquefied hydrogen storage tank . 23
Bibliography . 26
iv © ISO 2024 – All rights reserved
Formatted: Centered
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
Formatted: Don't adjust space between Latin and
bodies (ISO member bodies). The work of preparing International Standards is normally carried out Asian text, Don't adjust space between Asian text and
through ISO technical committees. Each member body interested in a subject for which a technical numbers
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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of
(a) patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed
patent rights in respect thereof. As of the date of publication of this document, ISO had not received notice
Formatted: Font color: Auto
of (a) patent(s) which may be required to implement this document. However, implementers are
cautioned that this may not represent the latest information, which may be obtained from the patent
database available at www.iso.org/patents.www.iso.org/patents. ISO shall not be held responsible for
identifying any or all such patent rights.
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.
Formatted: English (United Kingdom)
This document was prepared by Technical Committee ISO/TC 8, Ships and marine technology,
Subcommittee SC 3, Piping and machinery.
Any feedback or questions on this document should be directed to the user’s national standards body. A
Formatted: English (United Kingdom)
complete listing of these bodies can be found at www.iso.org/members.html.
Formatted: Don't adjust space between Latin and
Asian text, Don't adjust space between Asian text and
.
numbers
Formatted: English (United Kingdom)
Formatted: Normal, Centered, Space After: 24 pt, Tab
stops: 487.6 pt, Right
Formatted: Font: 9 pt
v
Introduction
Hydrogen offers a reliable way to decarbonise a variety of sectors including the maritime industry, where
it has been historically difficult to meaningfully reduce CO emissions in spite ofdespite the commitments
2 Formatted: Subscript
by governments and the implementation of regulatory measures.
It is noteworthy that There are technologies are already available that enable hydrogen to be produced,
stored, transported and used as energy in different ways. Various materials can be produced by hydrogen,
including renewable energy, natural gas, coal and oil. ItHydrogen can be transported as a gas by pipelines
or in liquid form by ship, much like liquid natural gas (LNG)), and transformed into electric energy to
provide homes or industry with power and also into fuels for cars, trucks, ships and planes.
However, the safe and wide use of hydrogen in marine industry faces several challenges, in particular the
absence of applicable international standards on the safety testing of hydrogen systems. All system
components should be designed and tested for the safety and reliability in handling liquid hydrogen and
thereby the facilitation of decarbonisation with the transition into hydrogen-based clean energy.
In this regard, this document sets up a general test requirement for the liquid hydrogen cargo tank of
hydrogen carrier ships. It is expected that useful information can be provided to the marine industry such
asstakeholders including ship owners, classification societies, and shipyards, etc. Finally, this document
wouldaims to contribute to the growth of relevant industries and benefit all related stakeholders.
vi © ISO 2024 – All rights reserved
FINAL DRAFT INTERNATIONAL ISO/DISFDIS 11326:2023(E2024(en)
STANDARDInternational Standard
Ships and marine technology —Piping and machinery—Test
procedures for liquid hydrogen storage tank of hydrogen ships
1 Scope
This document specifies general inspection and test requirements for liquid hydrogen cargo tanks on
board hydrogen carrier ships. In the cases of liquefied hydrogen containment systems, the testing activity
depends strictly on the type of storage containment technology identified by the International Code for
[1]
the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk (IGC Code).). This document
Formatted: Superscript
is applicable to Type C independent metallic double wall type tanks with vacuum insulation having a
capacity of not more than 1000 1 000 cubic metres (m ). It is also applicable to liquid hydrogen cargo
tanks which are designed to transport pure para-hydrogen (not less than 95 % content).
...
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