# External corrosion control: Examination of buried pipeline when exposed.

**Citation:** 49 CFR 192.459  
**Type / status:** regulation / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2026-08-18  
**Published:** Not stated

Whenever an operator has knowledge that any portion of a buried pipeline is exposed, the exposed portion must be examined for evidence of external corrosion if the pipe is bare, or if the coating is deteriorated. If external corrosion requiring remedial action under §§ 192.483 through 192.489 is fou

## Document text

Whenever an operator has knowledge that any portion of a buried pipeline is exposed, the exposed portion must be examined for evidence of external corrosion if the pipe is bare, or if the coating is deteriorated. If external corrosion requiring remedial action under §§ 192.483 through 192.489 is found, the operator shall investigate circumferentially and longitudinally beyond the exposed portion (by visual examination, indirect method, or both) to determine whether additional corrosion requiring remedial action exists in the vicinity of the exposed portion.

[Amdt. 192-87, 64 FR 56981, Oct. 22, 1999]

## Provenance

- Official: Yes
- Source: <https://www.ecfr.gov/on/2026-08-18/title-49/section-192.459>
- Source ID: `ecfr`
- SHA-256: `9fa9c3106b2d4a82490b5fdaf16d5610d603b1b5c064e09434aff8fd2a5a8a18`
- Retrieved: 2026-08-20T05:54:34.435Z
- Exported: 2026-08-23T10:45:19.597Z
- Document slug: `49-cfr-192-459`

### Source metadata

```json
{
  "cfrTitle": 49,
  "part": "192",
  "section": "192.459",
  "subpart": "Subpart I—Requirements for Corrosion Control",
  "corpusVersion": "2026-08-18",
  "jurisdiction": "US"
}
```