La. Admin. Code tit. 43 § XIII-1715

Current through Register Vol. 50, No. 9, September 20, 2024

Section XIII-1715 - Wrinkle Bends in Steel Pipe [49 CFR 192.315]

A. A wrinkle bend may not be made on steel pipe to be operated at a pressure that produces a hoop stress of 30 percent, or more, of SMYS. [ 49 CFR 192.315(a)]

B. Each wrinkle bend on steel pipe must comply with the following. [ 49 CFR 192.315(b) ]

1. The bend must not have any sharp kinks. [ 49 CFR 192.315(b)(1)]

2. When measured along the crotch of the bend, the wrinkles must be a distance of at least one pipe diameter. [ 49 CFR 192.315(b)(2)]

3. On pipe 16 inches (406 millimeters) or larger in diameter, the bend may not have a deflection of more than 1 1/2^o for each wrinkle. [ 49 CFR 192.315(b)(3)]

4. On pipe containing a longitudinal weld the longitudinal seam must be as near as practicable to the neutral axis of the bend. [ 49 CFR 192.315(b)(4)]

La. Admin. Code tit. 43, § XIII-1715

Promulgated by the Department of Natural Resources, Office of Conservation, LR 9:232 (April 1983), amended LR 10:525 (July 1984), LR 27:1542 (September 2001), LR 30:1246 (June 2004).

AUTHORITY NOTE: Promulgated in accordance with R.S. 30:501 et seq.