HAR 6-77-81
HAR 6-77-81 Nondestructive testing
performed by any process, other than trepanning, that will clearly indicate defects that may affect the integrity of the weld.#
(b)Nondestructive testing of welds must be performed:#
(1)In accordance with written procedures; and#
(2)By persons who have been trained and qualified in the established procedures and with the equipment employed in testing;#
(c)Procedures must be established for the proper interpretation of each nondestructive test of a weld to ensure the acceptability of the weld under section 6-77-80(c).#
(d)When nondestructive testing is required under section 6-77-80(b), the following percentages of each day's field butt welds, selected at random by the operator, must be nondestructively tested over their entire circumference:#
(1)In Class 1 locations, except offshore, at least ten percent;#
(2)In Class 2 locations, at least fifteen percent;#
(3)In Class 3 and Class 4 locations, at crossings of major or navigable rivers, offshore, and within railroad or public highway rights-of-way, including tunnels, bridges, and overhead road crossings, 100 percent unless impracticable, in which case at least ninety percent. Nondestructive testing must be impracticable for each girth weld not tested;#
(4)At pipeline tie-ins, 100 percent.#
(e)Except for a welder whose work is isolated from the principal welding activity, a sample of each welder's work for each day must be nondestructively tested, when nondestructive testing is required under section 6-77-80(b).#
(f)When nondestructive testing is required under section 6-77-80(b), each operator must retain, for the life of the pipeline, a record showing by milepost, engineering station, or by geographic feature, the number of girth welds made, the number nondestructively tested, the number rejected, and the disposition of the rejects. [Eff ] (Auth: HRS '269-6) (Imp: 49#