46 C.F.R. § 52.05-30 Minimum requirements for attachment welds (modifies PW–16).
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(a) The location and minimum size of attachment welds for nozzles and other connections shall be as required by PW–16 of the ASME Code except as noted otherwise in this section. (b) When nozzles or couplings are attached to boilers, as shown in Figure PW–16 (a) and (c) of the ASME Code and are welded from one side only, backing strips shall be used unless it can be determined visually or by acceptable nondestructive test methods that complete penetration has been obtained. (c) When attachments as shown in Figure PW–16 (y) and (z) of the ASME Code are employed they shall be limited to 2-inch pipe size for pressure exceeding 150 pounds per square inch.
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PART 52—POWER BOILERS
Subpart 52.05—Requirements for Boilers Fabricated by Welding
§ 52.05-30 Minimum requirements for attachment welds (modifies PW–16).
