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

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

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§ 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:

Expand Table
Gas temperature in degrees
Fahrenheit (Celsius) 		Temperature
derating factor (T)
250 °F (121 °C) or less 1.000
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]


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