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Standard
ISO 19885-1
First edition
Gaseous hydrogen — Fuelling
2024-05
protocols for hydrogen-fuelled
vehicles —
Part 1:
Design and development process for
fuelling protocols
Reference number
ISO 19885-1:2024(en) © ISO 2024
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ISO 19885-1:2024(en)
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Published in Switzerland
© ISO 2024 – All rights reserved
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ISO 19885-1:2024(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Abbreviations and symbols . 7
5 General description of the fuelling protocol design and development process . 8
6 Definition of fuelling protocol requirements for dispensing . 9
6.1 Definition of basic requirements for the fuelling protocol .9
6.2 Definition of the fuelling envelope .9
6.2.1 Fuelling requirements based on vehicle regulations and standards .9
6.2.2 Additional information for vehicle requirements when regulatory requirements
and standards are not available .10
6.2.3 Requirements based on dispenser design and operating characteristics .11
6.3 Dispenser application considerations .11
7 Fuelling protocol design and definition .12
7.1 Fuelling protocol design . 12
7.2 Communications between the vehicle and dispensing system . 12
7.3 Risk assessment and fault management . 13
8 Development and verification of the fuelling protocol . 14
8.1 Verification of the fuelling protocol .14
8.2 Documentation and standardization of the fuelling protocol .
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