# HAR 6-77-80 Inspection and test of welds

- **operation:** document
- **citation:** HAR 6-77-80
- **title:** HAR 6-77-80 Inspection and test of welds
- **source type:** regulation
- **agency:** Hawaii Public Utilities Commission
- **status:** current
- **official:** true
- **published on:** 1994-04-15
- **effective on:** 1994-09-03
- **summary:** conducted to insure that: (1) The welding is performed in accordance with the welding procedure; and (2) The weld is acceptable under subsection (c); (b) The welds on a pipeline to be operated at a pressure that produces a hoop stress of twenty percent or more of SMYS must be nondestructively tested
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- **source url:** https://puc.hawaii.gov/wp-content/uploads/2026/04/HAR-6-77-Transp-of-Gas-03-31-2026.pdf
**body:**

conducted to insure that: (1) The welding is performed in accordance with the welding procedure; and (2) The weld is acceptable under subsection (c); (b) The welds on a pipeline to be operated at a pressure that produces a hoop stress of twenty percent or more of SMYS must be nondestructively tested in accordance with section 6-77-81, except that welds that are visually inspected and approved by a qualified welding inspector need not be nondestructively tested if: (1) The pipe has a nominal diameter of less than six inches; or (2) The pipeline is to be operated at a pressure that produces a hoop stress of less than forty percent of SMYS and the welds are so limited in number that nondestructive testing is impractical. (c) The acceptability of a weld that is nondestructively tested or visually inspected is determined according to the standards in section 6 of API Standard 1104. [Eff ] (Auth: HRS '269-6) (Imp: 49 C.F.R. '192.241, October 1, 1990)
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