UNE-EN 17533:2021

This International Standard specifies the requirements for design, manufacture and testing of standalone or manifolded (for some specific tests such as bonfire) cylinders, tubes, and other pressure vessels of steel, stainless steel, aluminium alloys or of non-metallic construction material. These are intended for the stationary storage of gaseous hydrogen of up to a maximum water capacity of 10 000 l and a maximum allowable working pressure not exceeding 110 MPa, of seamless metallic construction (Type 1) or of composite construction (Types 2, 3 and 4), hereafter referred to as pressure vessels. Type 2 and 3 vessels with welded liners are excluded.For an existing design already qualified for other applications (e.g. transportable applications) follow the requirements of Annex B.This International Standard is not intended as a specification for pressure vessels used for solid, liquid hydrogen or hybrid cryogenic-high pressure hydrogen storage applications.This International Standard does not include external piping which can be designed according to a recognized standard (e.g. ISO 15649).