---
kind: "section"
citation: "49 C.F.R. § 192.463"
title: "49"
number: "192.463"
heading: "External corrosion control: Cathodic protection."
url: "https://uscodex.org/cfr/49/192.463"
---

# §192.463. External corrosion control: Cathodic protection.

- (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.

## Notes

### Source

Source: Amdt. 192-4, 36 FR 12302, June 30, 1971, unless otherwise noted.

### Authority

Authority: 30 U.S.C. 185(w)(3), 49 U.S.C. 5103, 60101 et. seq., and 49 CFR 1.97.

### Source

Source: 35 FR 13257, Aug. 19, 1970, unless otherwise noted.