CEN/TC 69/WG 19 - Valves for hydrogen applications and networks
Valves for hydrogen applications and networks
General Information
Frequently Asked Questions
CEN/TC 69/WG 19 is a Working Group within the European Committee for Standardization (CEN). It is named "Valves for hydrogen applications and networks". This committee has published 1 standards.
CEN/TC 69/WG 19 develops CEN standards in the area of Information technology. Currently, there are 1 published standards from this working group.
The European Committee for Standardization (CEN) is a public standards organization that brings together the national standardization bodies of 34 European countries. CEN provides a platform for developing European Standards (ENs) and other technical documents in relation to various products, materials, services, and processes, supporting the European Single Market.
A Working Group in CEN is a specialized group responsible for developing standards or technical work within a defined scope. These bodies bring together international experts to create consensus-based standards that support global trade, safety, and interoperability.
This document applies to industrial metallic valves for hydrogen use. It contains recommendations and additional requirements applicable to material selection, design, manufacture, and final assessment.
This document addresses the following four services/damage mechanisms, which might exist in combinations:
- low temperature applications;
- hydrogen environmental embrittlement (HEE) or hydrogen-induced cracking (HIC);
- high temperature hydrogen attack (HTHA);
- hydrogen service with cyclic loads (fatigue).
The document considers the difference between gaseous hydrogen (GH2) and liquid hydrogen (LH2), where necessary.
The additional provisions set out in this document do not cover corrosion such as electro-chemical corrosion of metals under participation of hydrogen (e.g. sour gas).
This document is based on the requirements contained in the standards specified below:
- applications with a maximum allowable pressure PS greater than 0,5 bar in accordance with the European legislation for pressure equipment, the applicable provisions of EN 16668 apply;
- additional requirements for valves in chemical and petrochemical applications are specified in EN 12569;
- additional requirements for valves in gas distribution systems are specified in EN 13774;
- additional requirements for valves in gas transportation systems are specified in EN 14141.
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