Applies to piping in gaseous and liquid 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 equipment 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 requirements of Part IP for Industrial Piping and Part PL for Pipelines.