# External corrosion control: Cathodic protection.

**Citation:** 49 CFR 192.463  
**Type / status:** regulation / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2026-08-18  
**Published:** Not stated

(a) Each cathodic protection system required by this subpart must provide a level of cathodic protection that complies with one or more of the applicable criteria contained in appendix D of this part. If none of these criteria is applicable, the cathodic protection system must provide a level of cat

## Document text

(a) Each cathodic protection system required by this subpart must provide a level of cathodic protection that complies with one or more of the applicable criteria contained in appendix D of this part. If none of these criteria is applicable, the cathodic protection system must provide a level of cathodic protection at least equal to that provided by compliance with one or more of these criteria.

(b) If amphoteric metals are included in a buried or submerged pipeline containing a metal of different anodic potential—

(1) The amphoteric metals must be electrically isolated from the remainder of the pipeline and cathodically protected; or

(2) The entire buried or submerged pipeline must be cathodically protected at a cathodic potential that meets the requirements of appendix D of this part for amphoteric metals.

(c) The amount of cathodic protection must be controlled so as not to damage the protective coating or the pipe.

## Provenance

- Official: Yes
- Source: <https://www.ecfr.gov/on/2026-08-18/title-49/section-192.463>
- Source ID: `ecfr`
- SHA-256: `725be47904d30f09c07ddc78c32b705a625b9efa0375bd9a50dd0d105e55a1bb`
- Retrieved: 2026-08-20T05:54:34.435Z
- Exported: 2026-08-24T22:49:20.289Z
- Document slug: `49-cfr-192-463`

### Source metadata

```json
{
  "cfrTitle": 49,
  "part": "192",
  "section": "192.463",
  "subpart": "Subpart I—Requirements for Corrosion Control",
  "corpusVersion": "2026-08-18",
  "jurisdiction": "US"
}
```