§ 52.05-15 — -15 Heat Treatment (modifies Pw-10)

Vessels and vessel parts must be preheated and postweld heat treated in accordance with PW-38 and PW-39 of Section I of the ASME BPVC (incorporated by reference; see § 52.01-1). This includes boiler parts made of pipe material, even though they may be nondestructively examined under § 52.05-20.