{"operation":"document","citation":"49 CFR 192.463","title":"External corrosion control: Cathodic protection.","source_type":"regulation","agency":"Pipeline and Hazardous Materials Safety Administration","status":"current","official":true,"published_on":null,"effective_on":"2026-08-18","summary":"(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","machine_formats":{"json":"https://regulus.evalyn.ai/document/49-cfr-192-463.json","markdown":"https://regulus.evalyn.ai/document/49-cfr-192-463.md"},"app_url":"https://regulus.evalyn.ai/document/49-cfr-192-463","source_url":"https://www.ecfr.gov/on/2026-08-18/title-49/section-192.463","body":"(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.\n\n(b) If amphoteric metals are included in a buried or submerged pipeline containing a metal of different anodic potential—\n\n(1) The amphoteric metals must be electrically isolated from the remainder of the pipeline and cathodically protected; or\n\n(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.\n\n(c) The amount of cathodic protection must be controlled so as not to damage the protective coating or the pipe.","truncated":false,"body_characters":936}