British Standards Institution

Source:: ISO
Committee:: SME/32 - Ships and marine technology - Steering committee
Categories:: Piping systems
Comment period start date:: 25/08/2025
Comment period end date:: 18/10/2025
Number of comments:: 0

Comment by:

18th Oct

Scope

This document specifies the general inspection and test requirements for the factory test of liquid hydrogen valves to be used on hydrogen ships. These test procedures are applicable for liquid hydrogen valves of liquid hydrogen (LH2) carriers or liquid hydrogen (LH2) bunkering vessels. This document applies to all valves in the liquid hydrogen systems, such as gate, globe, check, ball and butterfly valves, and contains the minimum test requirements to be observed. Functions that are specific to a manufacturer and any onboard tests or specification required by client are not included.

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Please email further comments to: debbie.stead@bsigroup.com

Standard timeline

1. Proposal (Complete)

Proposal start date:

2. Draft (Complete)

Draft start date:

05/06/2025

3. Public Comments

Public Comments start date:

25/08/2025

Public Comments end date:

18/10/2025

Learn more about the standards development process

Standards Development

BS ISO 21341 ISO 21341 Ships and marine technology. Test procedures for liquid hydrogen valve of hydrogen ships

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