Wisconsin Administrative Code
Public Service Commission
Chapter PSC 135 - Gas Safety
Subchapter II - Additions to 49 CFR Part 192
Section PSC 135.053 - General additions [49 CFR 192.53]

(aw) Some of the materials conforming to specifications approved for use under 49 CFR 192 may not have properties suitable for the lower portion of the temperature band covered by 49 CFR 192. Operators are cautioned to give attention to the low-temperature properties of the materials used for facilities to be exposed to unusually low ground temperatures or low atmospheric temperatures. Twenty inch steel pipe and larger, with a specified minimum yield strength of 52,000 p.s.i. or higher, shall be tested for fracture toughness in accordance with the applicable section of respective API standard under which it was produced, except for small lot purchases of pipe where testing for fracture toughness is impractical.

(dw) When substantial quantities of pipe are acquired certified reports of chemical composition and physical properties shall be obtained; when the quantity of pipe involved is so limited that this requirement would be impractical, a certified statement shall be obtained setting forth the specification under which the pipe was manufactured.