{"operation":"document","citation":"HAR 6-77-81","title":"HAR 6-77-81 Nondestructive testing","source_type":"regulation","agency":"Hawaii Public Utilities Commission","status":"current","official":true,"published_on":"1994-04-15","effective_on":"1994-09-03","summary":"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 p","machine_formats":{"json":"https://regulus.evalyn.ai/document/hi-har-har-6-77-81.json","markdown":"https://regulus.evalyn.ai/document/hi-har-har-6-77-81.md"},"app_url":"https://regulus.evalyn.ai/document/hi-har-har-6-77-81","source_url":"https://puc.hawaii.gov/wp-content/uploads/2026/04/HAR-6-77-Transp-of-Gas-03-31-2026.pdf","body":"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 C.F.R. '192.243, October 1, 1990)","truncated":false,"body_characters":1882}