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Code of Federal Regulations Title 46. Shipping § 46.154.660 Pipe welding

Current as of January 02, 2025 | Updated by Findlaw Staff

(a) Pipe welding must meet Part 57 of this chapter.

(b) Longitudinal butt welds, in piping that does not meet a standard or specification under § 56.60–1 of this chapter, and girth butt welds must meet the following:

(1) Butt welds of pipes made from carbon, carbon manganese, or low alloy steels must meet § 56.50–105 of this chapter, including the requirements for post-weld heat treatment.

(2) Except for piping inside an independent cargo tank type A, B, or C, butt welds must be 100% radiographically tested if the design temperature is lower than –10° C (14° F), and:

(i) The wall thickness is greater than 10 mm (0.394 in.);  or

(ii) The nominal pipe diameter is greater than 100 mm (nominal 4 in.).

(3) If Table 4 references this section, butt welds for deck cargo piping exceeding 75 mm (3 in.) in diameter must be 100% radiographically tested.

(4) Butt welds of pipes not meeting paragraph (b)(2) or (b)(3) of this section must meet the non-destructive testing requirements under Subpart 56.95 of this chapter.

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Cite this article: FindLaw.com - Code of Federal Regulations Title 46. Shipping § 46.154.660 Pipe welding - last updated January 02, 2025 | https://codes.findlaw.com/cfr/title-46-shipping/cfr-sect-46-154-660/

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