Section PSC 135.505 - Strength test requirements for steel pipeline to operate at a hoop stress of 30 percent or more of SMYS addition [49 CFR 192.505] After 49 CFR 192.505(d), insert:
(ew) Except in freezing weather or when water is not available, pipelines or mains larger than 6 inches in diameter, installed in class locations 1, 2, or 3, shall be hydrostatically tested in place to at least 90% of the specified minimum yield strength.Wis. Admin. Code Public Service Commission PSC 135.505
CR Register, October, 1999, No. 526, eff. 11-1-99.Amended by, CR 21-049: am. Register March 2022 No. 795, eff. 4/1/2022