BS EN 17339:2020 pdf free.Transportable gas cylinders一Fully wrapped carbon composite cylinders and tubes for hydrogen.
BS EN 17339 This document specifies minimum requirements for the materials, design, construction,prototype testing and routine manufacturing inspections of composite gas cylinders and tubes for compressed hydrogen. NOTE1 Unless specified in the text, for the purposes of this document, the word “cylinder” includes tubes. This document applies only to fully wrapped composite cylinders with carbon fibres intended to be permanently mounted in a frame (e.g. bundle or trailer) with a test pressure of not less than 300 bar, with:一non-metallic liners or seamless metallic liners;一a maximum water capacity of3 000 l;一a maximum working pressure of 1 000 bar;一the product of working pressure times water capacity (p x V) not exceeding 1 000 000 bar.l.A glass fibre protective layer is sometimes applied to the external surface of the cylinder.A cylinder with a non-metallic liner shall be designed as if the liner will be non-load sharing. The liner material shall be compatible with hydrogen as determined by EN ISO 11114-2 or demonstrated by suitable testing.Where a metal end boss is used in a non- metallic liner, it shall be considered part of the liner material and shall fulfil the material requirements specified in the relevant standard, as listed in 5.2.1. Other materials are acceptable if hydrogen compatibility is demonstrated by testing according to EN ISO 11114-4 or if it is accepted by design standards (e.g. EN ISO 7866]. The drawing of the liner shall include the specification of the material and material properties of the boss. The following material properties of the boss shall be specified in the design: a] minimum yield stress; b) minimum tensile strength;
c) minimum elongation;d) compatibility with hydrogen as determined by EN ISO 11114-1.The metal end boss bearing the cylinder thread shall be designed to withstand the torque applied
in fitting the valve to the cylinder and the tests specified in Test 13 (for taper threads only, see 6.2.13) and Test 14 (see 6.2.14).BS EN 17339 pdf downlaod.