La. Admin. Code tit. 43 § XIII-2917

Current through Register Vol. 50, No. 11, November 20, 2024

Section XIII-2917 - Transmission Lines: Permanent Field Repair of Leaks [49 CFR 192.717]

A. Each permanent field repair of a leak on a transmission line must be made by: [ 49 CFR 192.717]

1. removing the leak by cutting out and replacing a cylindrical piece of pipe; or [ 49 CFR 192.717(a)]

2. repairing the leak by one of the following methods: [ 49 CFR 192.717(b)]

a. install a full encirclement welded split sleeve of appropriate design, unless the transmission line is joined by mechanical couplings and operates at less than 40 percent of SMYS; [ 49 CFR 192.717(b)(1)]

b. if the leak is due to a corrosion pit, install a properly designed bolt-on-leak clamp; [ 49 CFR 192.717(b)(2)]

c. if the leak is due to a corrosion pit and on pipe of not more than 40,000 psi (276 Mpa) SMYS, fillet weld over the pitted area a steel plate patch with rounded corners, of the same or greater thickness than the pipe, and not more than one-half of the diameter of the pipe in size; [ 49 CFR 192.717(b)(3)]

d. if the leak is on a submerged offshore pipeline or submerged pipeline in inland navigable waters, mechanically apply a full encirclement split sleeve of appropriate design; [ 49 CFR 192.717(b)(4)]

e. apply a method that reliable engineering tests and analyses show can permanently restore the serviceability of the pipe. [ 49 CFR 192.717(b)(5)]

La. Admin. Code tit. 43, § XIII-2917

Promulgated by the Department of Natural Resources, Office of Conservation, LR 9:245 (April 1983), amended LR 10:537 (July 1984), LR 27:1549 (September 2001), LR 30:1268 (June 2004).

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