{"operation":"document","citation":"49 CFR 192.115","title":"Temperature derating factor (T) for steel pipe.","source_type":"regulation","agency":"Pipeline and Hazardous Materials Safety Administration","status":"current","official":true,"published_on":null,"effective_on":"2026-08-18","summary":"The temperature derating factor to be used in the design formula in § 192.105 is determined as follows:\n\nGas temperature in degreesFahrenheit (Celsius) Temperaturederating 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","machine_formats":{"json":"https://regulus.evalyn.ai/document/49-cfr-192-115.json","markdown":"https://regulus.evalyn.ai/document/49-cfr-192-115.md"},"app_url":"https://regulus.evalyn.ai/document/49-cfr-192-115","source_url":"https://www.ecfr.gov/on/2026-08-18/title-49/section-192.115","body":"The temperature derating factor to be used in the design formula in § 192.105 is determined as follows:\n\nGas temperature in degreesFahrenheit (Celsius) Temperaturederating 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\n\nFor intermediate gas temperatures, the derating factor is determined by interpolation.\n\n[35 FR 13257, Aug. 19, 1970, as amended by Amdt. 192-85, 63 FR 37502, July 13, 1998]","truncated":false,"body_characters":474}