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

**Citation:** LAC 43:XIII §915  
**Type / status:** regulation / current  
**Agency:** Louisiana Office of Conservation  
**Effective:** Not stated  
**Published:** Not stated

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. For interme

## Document text

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. 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).

## Provenance

- Official: Yes
- Source: <https://www.doa.la.gov/doa/osr/louisiana-administrative-code/>
- Source ID: `la-osr-lac`
- SHA-256: `60985053528c242462bb965f1dedc76b9ffb6d49b27fcf6ff9223536e6b5a1e5`
- Retrieved: 2026-08-12T05:03:44.627Z
- Exported: 2026-08-23T09:58:26.930Z
- Document slug: `la-lac-43-xiii-915`

### Source metadata

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  "jurisdiction": "US-LA",
  "part": "LAC 43:XIII",
  "section": "915",
  "pipelineScope": "louisiana-pipeline-safety",
  "legalScope": "Louisiana Office of Conservation pipeline-safety rules governing covered transportation of gas, gas reporting, incorporated and modified federal gas-pipeline requirements, drug and alcohol testing, and LNG facilities.",
  "applicabilityCaveat": "Part XIII applies only within the scope of its certification or agreement, jurisdictional and facility limitations, and section-specific exclusions. Determine operator status, commodity, intrastate or interstate jurisdiction, coastal or Outer Continental Shelf location, gathering classification, LNG status, and federal preemption before applying a provision.",
  "incorporationCaveat": "Part XIII incorporates and modifies portions of 49 CFR Parts 40, 191, 192, 193, and 199. Bracketed federal citations identify the source provision, but Louisiana numbering and text control only within the state rule's scope; consult both current Louisiana and applicable federal text.",
  "historicalNote": "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).",
  "authorityNote": "AUTHORITY NOTE: Promulgated in accordance with R.S. 501 et seq.",
  "reserved": false,
  "references": [
    {
      "citation": "49 CFR 192.115",
      "referenceType": "cfr",
      "url": "https://www.ecfr.gov/current/title-49/part-192"
    },
    {
      "citation": "LAC 43:XIII §905",
      "referenceType": "louisiana-administrative-code",
      "url": "https://www.doa.la.gov/doa/osr/louisiana-administrative-code/"
    }
  ],
  "sourceEdition": "December 2025",
  "artifactPath": "data/sources/louisiana/louisiana-lac-title-43-parts-ix-xi-xiii.docx",
  "artifactSha256": "568d6b8b3cc244c67a0c93c040442fa53a1bbdafcb688b253cfa707d84d64259",
  "publicationStatus": "Current state-certified Louisiana Administrative Code compilation; section-level effective dates are not inferred from compilation or monthly history citations.",
  "rights": "The Louisiana Administrative Code is the state-certified publication. Preserve Office of State Register attribution and review Louisiana website terms, agency marks, incorporated standards, and third-party material before redistribution.",
  "region": "LA"
}
```