LAC 33:V.30212. Bending of Pipe [49 CFR 195.212]

A. Pipe must not have a wrinkle bend. [49 CFR 195.212(a)] B. Each field bend must comply with the following: [49 CFR 195.212(b)] 1. a bend must not impair the serviceability of the pipe; [49 CFR 195.212(b)(1)] 2. each bend must have a smooth contour and be free from buckling, cracks, or any other mechanical damage; [49 CFR 195.212(b)(2)] 3. on pipe containing a longitudinal weld, the longitudinal weld must be as near as practicable to the neutral axis of the bend unless: [49 CFR 195.212(b)(3)] a. the bend is made with an internal bending mandrel; or [49 CFR 195.212(b)(3)(i)] b. the pipe is 12-3/4 in. (324 mm.) or less nominal outside diameter or has a diameter to wall thickness ratio less than 70. [49 CFR 195.212(b)(3)(ii)] C. Each circumferential weld which is located where the stress during bending causes a permanent deformation in the pipe must be nondestructively tested either before or after the bending process. [49 CFR 195.212(c)]