Temperature Derating Factor (T) for Steel Pipe [49 CFR 192.115]

(A)A. The temperature derating factor to be used in the design formula in §905 is determined as follows.#

Gas Temperature in Degrees Fahrenheit (Celsius)#

Temperature Derating Factor (T)#

250F (121C) or less#

1. 000#

300F (149C)#

0. 967#

350F (177C)#

0. 933#

400 F (204C)#

0. 900#

450F (232C)#

0. 867#

(B)B. For intermediate gas temperatures, the derating factor is determined by interpolation. [49 CFR 192.115]#

AUTHORITY NOTE: Promulgated in accordance with R.S. 501 et seq.#

HISTORICAL NOTE: Promulgated by the Department of Natural Resources, Office of Conservation, LR 9:222 (April 1983), amended LR 10:514 (July 1984), LR 20:444 (April 1994), LR 27:1538 (September 2001), LR 30:1231 (June 2004).#