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kSIST-TS FprCEN ISO/TS 15916:2025

(Main)

Hydrogen technologies - Basic considerations for the safety of hydrogen systems (ISO/DTS 15916:2025)

Hydrogen technologies - Basic considerations for the safety of hydrogen systems (ISO/DTS 15916:2025)

This Technical Specification provides guidelines for the use of hydrogen in its gaseous and liquid forms as well as its storage in either of these or other forms (hydrides). It identifies the basic safety concerns, hazards and risks, and describes the properties of hydrogen that are relevant to safety. Detailed safety requirements associated with specific hydrogen applications are treated in separate International Standards.
“Hydrogen” in this paper means normal hydrogen (1H2), not deuterium (2H2) or tritium (3H2).

Wasserstofftechnologien - Grundsätzliche Betrachtungen zur Sicherheit von Wasserstoffsystemen (ISO/DTS 15916:2025)

Technologies de l'hydrogène - Considérations fondamentales pour la sécurité des systèmes à l'hydrogène (ISO/DTS 15916:2025)

Tehnologija vodika - Osnovni vidiki varnosti sistemov vodika (ISO/DTS 15916:2025)

General Information

Status
Not Published
Public Enquiry End Date
02-Dec-2025
ICS
27.075 - Hydrogen technologies
Technical Committee
DPL - Gas supply
Current Stage
5520 - Unique Acceptance Procedure (UAP) (Adopted Project)
Start Date
24-Sep-2025
Due Date
11-Feb-2026
Ref Project
FprCEN ISO/TS 15916 - Hydrogen technologies - Basic considerations for the safety of hydrogen systems (ISO/DTS 15916:2025)
kSIST-TS FprCEN ISO/TS 15916:2025kSIST-TS FprCEN ISO/TS 15916:2025
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kSIST-TS FprCEN ISO/TS 15916:2025
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Standards Content (Sample)


SLOVENSKI STANDARD
01-november-2025
Tehnologija vodika - Osnovni vidiki varnosti sistemov vodika (ISO/DTS
15916:2025)
Hydrogen technologies - Basic considerations for the safety of hydrogen systems
(ISO/DTS 15916:2025)
Wasserstofftechnologien - Grundsätzliche Betrachtungen zur Sicherheit von
Wasserstoffsystemen (ISO/DTS 15916:2025)
Technologies de l'hydrogène - Considérations fondamentales pour la sécurité des
systèmes à l'hydrogène (ISO/DTS 15916:2025)
Ta slovenski standard je istoveten z: FprCEN ISO/TS 15916
ICS:
27.075 Tehnologija vodika Hydrogen technologies
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

FINAL DRAFT
Technical
Specification
ISO/DTS 15916
ISO/TC 197
Hydrogen technologies — Basic
Secretariat: SCC
considerations for the safety of
Voting begins on:
hydrogen systems
2025-09-18
Voting terminates on:
2025-12-11
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
ISO/CEN PARALLEL PROCESSING 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
ISO/DTS 15916:2025(en) © ISO 2025

FINAL DRAFT
ISO/DTS 15916:2025(en)
Technical
Specification
ISO/DTS 15916
ISO/TC 197
Hydrogen technologies — Basic
Secretariat: SCC
considerations for the safety of
Voting begins on:
hydrogen systems
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 2025
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
ISO/CEN PARALLEL PROCESSING
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
ISO/DTS 15916:2025(en) © ISO 2025

ii
ISO/DTS 15916:2025(en)
Contents Page
Foreword .vi
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Overview of hydrogen applications .13
4.1 Basic hydrogen infrastructure . 13
4.1.1 Categories of infrastructure . 13
4.1.2 Production . 13
4.1.3 Storage and transport. 13
4.1.4 Hydrogen end use applications .14
4.2 Typical hydrogen system components . 15
4.2.1 General . 15
4.2.2 Storage vessels . 15
4.2.3 Fluid delivery lines, piping, joints, and seals . 15
4.2.4 Flow controls . 15
4.2.5 Pressure-relief systems .16
4.2.6 Detection methods .16
4.2.7 Other components .16
4.2.8 Considerations for conditions external to the system .16
4.3 Hydrogen fuel .17
4.4 Environmental effects .17
5 Basic properties of hydrogen . 17
5.1 General properties .17
5.1.1 Atomic and molecular properties .17
5.1.2 Appearance and general characteristics .18
5.2 Selected thermophysical properties .18
5.2.1 General .18
5.2.2 Selected thermophysical properties of gaseous hydrogen .18
5.2.3 Selected thermophysical properties of cryogenic liquid hydrogen .19
5.3 Basic combustion properties .19
5.3.1 General remark on safety characteristics .19
5.3.2 Selected combustion properties of hydrogen . 20
5.3.3 Deflagration . 20
5.3.4 Detonation .21
5.3.5 Explosions .21
5.3.6 Flammability limits . 22
5.3.7 Ignition energy and minimum ignition energy as applied to deflagration . 22
6 Safety considerations for the use of gaseous and liquid hydrogen .23
6.1 General . 23
6.2 Hazards involved as a consequence of the properties of hydrogen .24
6.2.1 General .24
6.2.2 Gaseous hydrogen .24
6.2.3 Liquid hydrogen .24
6.3 Factors involved in combustion hazards . 25
6.3.1 Aspects of combustion . 25
6.3.2 Non-premixed combustion processes . 25
6.3.3 Explosions . 26
6.4 Factors involved in pressure hazards .27
6.4.1 General .27
6.4.2 Gaseous storage .27
6.4.3 Liquid hydrogen .27
6.5 Factors involved in low temperature hazards .27

iii
ISO/DTS 15916:2025(en)
6.6 Factors involved in hydrogen embrittlement hazards . 28
6.6.1 Hydrogen embrittlement . 28
6.6.2 Hydrogen attack . . 28
6.7 Health hazards. 28
6.7.1 Cold burns . 28
6.7.2 High temperature burns . 28
6.7.3 Asphyxiation . 28
6.7.4 Combustion by-products .
...

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