{"data":{"id":"us/49-cfr-192.463","jurisdiction":"us","citation":"49 CFR 192.463","heading":"External corrosion control: Cathodic protection.","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(b) If amphoteric metals are included in a buried or submerged pipeline containing a metal of different anodic potential—\n(1) The amphoteric metals must be electrically isolated from the remainder of the pipeline and cathodically protected; or\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(c) The amount of cathodic protection must be controlled so as not to damage the protective coating or the pipe.","path":["Title 49—Transportation","Subtitle B—Other Regulations Relating to Transportation","CHAPTER I—PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","SUBCHAPTER D—PIPELINE SAFETY","PART 192—TRANSPORTATION OF NATURAL AND OTHER GAS BY PIPELINE: MINIMUM FEDERAL SAFETY STANDARDS","Subpart I—Requirements for Corrosion Control"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-49.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:34Z","sha256":"3f2050c98756f134c1c335d7d63e72846a116950555231d336179084e96cd236","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-192.461","next":"us/49-cfr-192.465"},"notice":"GroundRules: Original legal text. Not legal advice."}