This Code is applicable to piping in gaseous and liquld hydrogen service and to pipelines in gaseous hydrogen service. This Code is applicable up to and including the joint connecting the piping to associated pressure vessels and equipment but not to the vessels and equip-ment themselves. It is applicable to the location and type of support elements but not to the structure to which the support elements are attached. The design for pressure and temperature shall be in accordance with the require-ments of Part IP for industrial piping and Part PL for pipe-lines. This Code is presented in the following parts and appendices:
(a) Part GR一General Requirements. Part GR contains requirements applicable to and referenced by other parts.
It contains definitions and requirements for materials,welding. brazing, heat treating. forming. testing inspec-tlon, examination, operation, and maintenance. It also contains quality system topics common to the other parts.
