{"operation":"document","citation":"PI-89-003","title":"Montana-Dakota Utilities Company — Pipeline Safety Interpretation","source_type":"guidance","agency":"Pipeline and Hazardous Materials Safety Administration","status":"guidance","official":true,"published_on":"1989-03-31","effective_on":null,"summary":"PI-89-003 response to Montana-Dakota Utilities Company concerning 192.457, 192.463, 192.755.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-89-003.json","markdown":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-89-003.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-89-003","source_url":"https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Pipeline/1989/PI89003.pdf","body":"<<<PAGE 1>>>\n\nMr. Tony J. Finneman\nMontana-Dakota Utilities Company\n400 North Fourth Street\nBismarck, North Dakota 58501\nDear Mr. Finneman:\nYou have asked whether an operator who voluntarily places a cathodic protection system on a gas\npipeline installed prior to August 1, 1971, with no evidence of active corrosion must provide a\nlevel of protection according to the criteria in Appendix D of Part 192. A corrosion mitigation\nmeasure that is provided as a general maintenance practice would result in these pipelines being\nconsidered \"unprotected\" for purposes of Section 192.463 and the 3-year reevaluation\nrequirement of §192.465(e). The Appendix D criteria apply to cathodic protection that is\nprovided to comply with regulations in Subpart I or Part 192.\nIn determining whether the Federal regulations require cathodic protection in the scenario\noutlined in your letter, you should assure that your program properly addressed all the\nrequirements of the regulations, such as using the definition of active corrosion under\n§192.457(c). Also, in determining whether the electrical survey required by §192.457(b)(3) and\n§192.465(e) is impractical, you must consider all factors that relate to the impracticality, including\npublic safety, not just economics. Copies of related interpretations published in OPS Advisory\nBulletins are enclosed for guidance in implementing your program.\nSincerely,\nRichard L. Beam\nDirector\nOffice of Pipeline Safety\nNOTE: THIS LETTER BELONGS IN APPENDIX \"D\"\nDB\nC:\\WP51\\INTERPRT\\192\\755\\89-03-31\n1","truncated":false,"body_characters":1529}