Section 52.05-1 - [Effective until 9/10/2024] General (modifies PW-1 through PW-54)(a) Boilers and component parts, including piping, that are fabricated by welding shall be as indicated in PW-1 through PW-54 of section I of the ASME Boiler and Pressure Vessel Code (incorporated by reference; see 46 CFR 52.01-1 ) except as noted otherwise in this subpart.CGFR 68-82, 33 FR 18815, Dec. 18, 1968, as amended by USCG-2003-16630, 73 FR 65162, Oct. 31, 2008