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Code of Federal Regulations (Last Updated: July 5, 2024) |
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Title 49 - Transportation |
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Subtitle B - Other Regulations Relating to Transportation |
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Chapter I - Pipeline and Hazardous Materials Safety Administration, Department of Transportation |
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SubChapter D - Pipeline Safety |
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Part 192 - Transportation of Natural and Other Gas by Pipeline: Minimum Federal Safety Standards |
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Subpart I - Requirements for Corrosion Control |
§ 192.463 - External corrosion control: Cathodic protection.
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§ 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.