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§ 192.115 Temperature derating factor (<em>T</em>) for steel pipe.

49 CFR 192.115

Citation49 CFR 192.115
CorpusDaily eCFR
Displayed edition2026-09-30
Last updated2026-09-30

§ 192.115 Temperature derating factor (T) for steel pipe.

The temperature derating factor to be used in the design formula in § 192.105 is determined as follows:

Gas temperature in degrees
Fahrenheit (Celsius)		Temperature
derating factor (T)
250 °F (121 °C) or less1.000
300 °F (149 °C)0.967
350 °F (177 °C)0.933
400 °F (204 °C)0.900
450 °F (232 °C)0.867
For intermediate gas temperatures, the derating factor is determined by interpolation.

[35 FR 13257, Aug. 19, 1970, as amended by Amdt. 192-85, 63 FR 37502, July 13, 1998]