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.
NOTE 1 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:
- non-metallic liners or seamless metallic liners
- a maximum water capacity of 3 000 l
- a maximum working pressure of 1 000 bar
- the product of working pressure times water capacity (p × V) not exceeding 1 000 000 bar.l.
NOTE 2 A glass fibre protective layer is sometimes applied to the external surface of the cylinder.