ISO 21266-2:2018

Road vehicles — Compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blends fuel systems — Part 2: Test methods

This document specifies the test methods for checking the minimum safety requirements specified in ISO 21266‑1. It is applicable to the functionality of the fuel systems designed to operate on compressed gaseous hydrogen and hydrogen/natural gas blends of motor vehicles as defined in ISO 3833. For tests of individual components, refer to the parts of ISO 12619, ISO 16380, ISO 17268, ISO 19881[1] and ISO/TS 15869 as applicable [1] Under preparation. Stage at the time of publication: ISO/FDIS 19881.

Véhicules routiers — Systèmes d'alimentation pour hydrogène gazeux comprimé (CGH2) et mélanges d'hydrogène et de gaz naturel — Partie 2: Méthodes d'essai

General Information

• Status: Published
• Publication Date: 25-Sep-2018
• ICS: 43.060.40 - Fuel systems
• Technical Committee: ISO/TC 22/SC 41 - Specific aspects for gaseous fuels
• Drafting Committee: ISO/TC 22/SC 41/WG 7 - General safety requirements for gaseous fuelled vehicles and terminology
• Current Stage: 9060 - Close of review
• Start Date: 04-Mar-2029

Relations

• Consolidated By: ISO 14341:2020 - Welding consumables — Wire electrodes and weld deposits for gas shielded metal arc welding of non alloy and fine grain steels — Classification
• Effective Date: 06-Jun-2022

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 21266-2
First edition
2018-10
Road vehicles — Compressed gaseous
hydrogen (CGH2) and hydrogen/
natural gas blends fuel systems —
Part 2:
Test methods
Véhicules routiers — Systèmes d'alimentation pour hydrogène gazeux
comprimé (CGH2) et mélanges d'hydrogène et de gaz naturel —
Partie 2: Méthodes d'essai
Reference number
ISO 21266-2:2018(E)
©
ISO 2018

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ISO 21266-2:2018(E)

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© ISO 2018
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ii © ISO 2018 – All rights reserved

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ISO 21266-2:2018(E)

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definition . 1
4 Test methods . 2
4.1 Cylinder mounting strength tests . 2
4.1.1 General. 2
4.1.2 Inertia test . 2
4.1.3 Static test . 2
4.1.4 Alternative method . 3
4.1.5 Acceptance criteria . 3
4.2 Leak test . 3
4.3 Functional test . 4
4.3.1 Main shut-off valve test . 4
4.3.2 Receptacle clearance test . 4
4.4 Receptacle mounting tests . 4
Annex A (informative) Engineering experience for the mounting of steel cylinders .5
Bibliography . 9
© ISO 2018 – All rights reserved iii

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ISO 21266-2:2018(E)

Foreword
ISO (the International O
...