# Transmission lines: Permanent field repair of imperfections and damages.

- **operation:** document
- **citation:** 49 CFR 192.713
- **title:** Transmission lines: Permanent field repair of imperfections and damages.
- **source type:** regulation
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** current
- **official:** true
- **published on:** Not available
- **effective on:** 2026-08-18
- **summary:** (a) Each imperfection or damage that impairs the serviceability of pipe in a steel transmission line operating at or above 40 percent of SMYS must be—

(1) Removed by cutting out and replacing a cylindrical piece of pipe; or

(2) Repaired by a method that reliable engineering tests and analyses show
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- **markdown:** https://regulus.evalyn.ai/document/49-cfr-192-713.md
- **app url:** https://regulus.evalyn.ai/document/49-cfr-192-713
- **source url:** https://www.ecfr.gov/on/2026-08-18/title-49/section-192.713
**body:**

(a) Each imperfection or damage that impairs the serviceability of pipe in a steel transmission line operating at or above 40 percent of SMYS must be—

(1) Removed by cutting out and replacing a cylindrical piece of pipe; or

(2) Repaired by a method that reliable engineering tests and analyses show can permanently restore the serviceability of the pipe.

(b) Operating pressure must be at a safe level during repair operations.

[Amdt. 192-88, 64 FR 69665, Dec. 14, 1999]
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- **body characters:** 474