American Society of Mechanical Engineers

·  ASME Section I Requirements for Power boilers. Part PW lists the Requirements for Boilers Fabricated By Welding. The rules in Part PW are applicable to boilers and component parts thereof, including piping constructed under the provisions of this Section that are fabricated by welding and shall be used in conjunction with the generalrequirements of Part PG as well as with the specific requirements in the applicable Parts of this Section that pertain to the type of boiler under consideration.