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Electronic Code of Federal Regulations
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e-CFR data is current as of March 26, 2020
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Title 49: Transportation
PART 192—TRANSPORTATION OF NATURAL AND OTHER GAS BY PIPELINE: MINIMUM FEDERAL SAFETY STANDARDS
Subpart C—Pipe Design
§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 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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