ISO 12619-2:2014/Amd 1:2016

INTERNATIONAL ISO
STANDARD 12619-2
First edition
2014-06-15
AMENDMENT 1
2016-05-15
Road vehicles — Compressed gaseous
hydrogen (CGH2) and hydrogen/
natural gas blend fuel system
components —
Part 2:
Performance and general test methods
AMENDMENT 1
Véhicules routiers — Composants des circuits d’alimentation pour
hydrogène gazeux comprimé (CGH2) et mélanges de gaz naturel et
hydrogène —
Partie 2: Performance méthodes d’essai en général
AMENDEMENT 1
Reference number
ISO 12619-2:2014/Amd.1:2016(E)
©
ISO 2016
ISO 12619-2:2014/Amd.1:2016(E)

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ISO 12619-2:2014/Amd.1:2016(E)

Foreword
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The committee responsible for this document is ISO/TC 22, Road vehicles, Subcommittee SC 41, Specific
aspects for gaseous fuels.
ISO 12619 consists of the following parts, under the general title Road vehicles — Compressed Gaseous
Hydrogen (CGH2) and Hydrogen/Natural gas blends fuel system components:
— Part 1: General requirements and definitions
— Part 2: Performance and general test methods
— Part 3: Pressure regulator
— Part 4: Check valve
— Part 5: Manual cylinder valve
— Part 6: Automatic valve
ISO 12619-2:2014/Amd.1:2016(E)
Road vehicles — Compressed gaseous hydrogen
(CGH2) and hydrogen/natural gas blend fuel system
components —
Part 2:
Performance and general test methods
AMENDMENT 1
Page 10, 22.2
Add the following clauses after 22.2:
23 Material requirements
Materials normally in contact with hydrogen shall be determined to be acceptable in hydrogen service,
with consideration of hydrogen embrittlement and hydrogen accelerated fatigue. The performance
tests cannot guarantee that all cases and conditions of hydrogen service will be validated, so it is
still incumbent on the manufacturer to carefully screen materials of construction for their intended
use. Materials and design shall be such that there will be no significant change in the functioning of
the component, deformation or mechanical change in the component, and no harmful corrosion,
deformation, or deterioration of the materials when subject to the service conditions provided in
ISO 12619-1, 4.4.
NOTE Material performance data in hydrogen environments can be found in the Sandia National
Laboratory Technical Reference for Hydrogen Compatibility of Materials or ANSI/AIAA G-095,
ANSI/CSA CHMC 1, ASME B31.12, and SAE J2579, Appendix B.
Non-metallic materials normally in contact with hydrogen shall be determined to be acceptable in
hydrogen service. Consideration shall be given to the fact that hydrogen diffuses through these materials
more easily than through metals; therefore, the suitability of materials shall be verifi
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