Part 192 Corrosion Enforcement Guidance
Part 192 Corrosion Enforcement GuidanceIntroductionThe materials contained in this document consist of guidance, techniques, procedures and other information forinternal use by the PHMSA pipeline safety enforcement staff. This guidance document describes the practicesused by PHMSA pipeline safety investigators and other enforcement personnel in undertaking their compliance,inspection, and enforcement activities. This document is U.S. Government property and is to be used inconjunction with official duties.The Federal pipeline safety regulations (49 CFR Parts 190-199) discussed in this guidance document containslegally binding requirements. This document is not a regulation and creates no new legal obligations. Theregulation is controlling. The materials in this document are explanatory in nature and reflect PHMSA’scurrent application of the regulations in effect at the time of the issuance of the guidance. In preparing anenforcement action alleging a probable violation, an allegation must always be based on the failure to take arequired action (or taking a prohibited action) that is set forth directly in the language of the regulation. Anallegation should never be drafted in a manner that says the operator “violated the guidance.”Nothing in this guidance document is intended to diminish or otherwise affect the authority of PHMSA tocarry out its statutory, regulatory or other official functions or to commit PHMSA to taking any action that issubject to its discretion. Nothing in this document is intended to and does not create any legal or equitableright or benefit, substantive or procedural, enforceable at law by any person or organization against PHMSA,its personnel, State agencies or officers carrying out programs authorized under Federal law.Decisions about specific investigations and enforcement cases are made according to the specific facts andcircumstances at hand. Investigations and compliance determinations often require careful legal and technicalanalysis of complicated issues. Although this guidance document serves as a reference for the staff responsiblefor investigations and enforcement, no set of procedures or policies can replace the need for active and ongoingconsultation with supervisors, colleagues, and the Office of Chief Counsel in enforcement matters.Comments and suggestions for future changes and additions to this guidance document are invited and shouldbe forwarded to your supervisor.The materials in this guidance document may be modified or revoked without prior notice by PHMSAmanagement.1
Part 192 Corrosion Enforcement GuidanceTable of ContentsPress Ctrl Home keys to return to TOCGlossary . .4§192.451 Scope . 5§192.452 Applicability to converted pipelines Section 192.452(a) . .6§192.452 Applicability to converted pipelines Section 192.452(b). . 8§192.453 General . 10§192.455 External corrosion control: Installed after 7/31/1971 Section 192.455(a). . . .12§192.455 External corrosion control: Installed after 7/31/1971 Section 192.455(b) .14§192.455 External corrosion control: Buried or submerged Section 192.455(c) 16§192.455 External corrosion control: Buried or submerged Section 192.455(d) . 18§192.455 External corrosion control: Buried or submerged Section 192.455(e) . 19§192.455 External corrosion control: Buried or submerged Section 192.455(f) . 20§192.457 External corrosion control: Installed before 8/01/71 Section 192.457(a) . . . 22§192.457 External corrosion control: Installed before 8/01/71 Section 192.457(b) . 24§192.459 External corrosion control: Examination of buried pipeline when exposed. 27§192.461 External corrosion control: Protective coating Section 192.461(a) . 29§192.461 External corrosion control: Protective coating Section 192.461(b) . 31§192.461 External corrosion control: Protective coating Section 192.461(c) . 32§192.461 External corrosion control: Protective coating Section 192.461(d) . 33§192.461 External corrosion control: Protective coating Section 192.461(e) . 34§192.463 External corrosion control: Cathodic protection Section 192.463(a). 35§192.463 External corrosion control: Cathodic protection Section 192.463(b). 38§192.463 External corrosion control: Cathodic protection Section 192.463(c) . 41§192.465 External corrosion control: Monitoring Section 192.465(a) . 43§192.465 External corrosion control: Monitoring Section 192.465(b) . 50§192.465 External corrosion control: Monitoring Section 192.465(c). 56§192.465 External corrosion control: Monitoring Section 192.465(d) . 62§192.465 External corrosion control: Monitoring Section 192.465(e) . 68§192.467 External corrosion control: Electrical isolation Section 192.467(a) . 75§192.467 External corrosion control: Electrical isolation Section 192.467(b) . 78§192.467 External corrosion control: Electrical isolation Section 192.467(c) . 81§192.467 External corrosion control: Electrical isolation Section 192.467(d) . 85§192.467 External corrosion control: Electrical isolation Section 192.467(e) . 88§192.467 External corrosion control: Electrical isolation Section 192.467(f) . 91§192.469 External corrosion control: Test stations . 94§192.471 External corrosion control: Test leads Section 192.471(a). 96§192.471 External corrosion control: Test leads Section 192.471(b). 98§192.471 External corrosion control: Test leads Section 192.471(c) . 99§192.473 External corrosion control: Interference currents Section 192.473(a) . 100§192.473 External corrosion control: Interference currents Section 192.473(b) . 102§192.475 Internal corrosion control: General Section 192.475(a). 104§192.475 Internal corrosion control: General Section 192.475(b). 106§192.475 Internal corrosion control: General Section 192.475(c) . 108§192.476 Internal corrosion control: Design and Construction Section 192.476(a) 110§192.476 Exceptions to Applicability Section 192.476(b) . . 112§192.476 Change to Existing Transmission Lines Section 192.476(c) .1132
§192.476 Records Section 192.476(d) .115§192.477 Internal corrosion control: Monitoring. . 117§192.479 Atmospheric corrosion control: General Section 192.479(a) . 119§192.479 Atmospheric corrosion control: General Section 192.479(b) . 121§192.479 Atmospheric corrosion control: General Section 192.479(c) . 123§192.481 Atmospheric corrosion control: Monitoring Section 192.481(a) . 125§192.481 Atmospheric corrosion control: Monitoring Section 192.481(b) . 127§192.481 Atmospheric corrosion control: Monitoring Section 192.481(c) . 132§192.483 Remedial measures: General Section 192.483(a) . 134§192.483 Remedial measures: General Section 192.483(b) . 136§192.483 Remedial measures: General Section 192.483(c) . 138§192.485 Remedial measures: Transmission lines Section 192.485(a) . 140§192.485 Remedial measures: Transmission lines Section 192.485(b) . 142§192.485 Remedial measures: Transmission lines Section 192.485(c). 144§192.487 Remedial measures: Distribution lines other than cast iron Section 192.487(a) . 146§192.487 Remedial measures: Distribution lines other than cast iron Section 192.487(b) . 148§192.489 Remedial measures: Cast iron and ductile iron pipelines Section 192.489(a). 150§192.489 Remedial measures: Cast iron and ductile iron pipelines Section 192.489(b) .152§192.490 Direct Assessment . . . 154§192.491 Corrosion control records Section 192.491(a) . 156§192.491 Corrosion control records Section 192.491(b) . 158§192.491 Corrosion control records Section 192.491(c). 1593
For a complete “Glossary of Terms” please refer to the following peline/TQGlossary/Glossary.html4
EnforcementGuidanceCORROSION Part 192Revision Date12/7/2015Code Section§192.451Section TitleScopeExisting CodeLanguage(a) This subpart prescribes minimum requirements for the protection of metallicpipelines from external, internal, and atmospheric corrosion.(b) [Reserved]Origin of CodeAuthority: Natural Gas Pipeline Act of 1968 (49 U.S.C. sec. 1671 et seq.), Part Iregulations of Office of the Secretary of Transportation, 49 CFR Part I, anddelegation of authority to Director, Office of Pipeline Safety, 33 FR 16468, unlessotherwise noted.Last AmendmentAmdt. 192–4, 36 FR 12302, June 30, 1971, Amdt. 192–27, 41 FR 34606,Aug.16, 1976; Amdt. 192–33, 43 FR 39389, Sept. 5, otice SummariesOther ReferenceMaterial & SourceGuidanceInformation1. Procedures for controlling corrosion are required by §192.13(c) and§192.605(b)(2) including those for the design, installation, operation andmaintenance of CP systems. This section, §192.451, states that the procedures arerequired for external, internal, and atmospheric corrosion control on metallic (steel,aluminum, copper, cast iron, ductile iron, and other metals, as applicable) pipelines.Criteria for CP are contained in Appendix D to Part 192.Examples of aProbableViolation orInadequateProceduresExamples ofEvidenceOther SpecialNotations5
EnforcementGuidanceCORROSION Part 192Revision Date12/7/2015Code Section§192.452(a)Section TitleHow does this subpart apply to converted pipelines and regulated onshoregathering lines?Existing CodeLanguageConverted Pipelines. Notwithstanding the date the pipeline was installed or anyearlier deadlines for compliance, each pipeline which qualifies for use under this partin accordance with §192.14 must meet the requirements of this subpart specificallyapplicable to pipelines installed before August 1, 1971, and all other applicablerequirements within 1 year after the pipeline is readied for service. However, therequirements of this subpart specifically applicable to pipelines installed after July31, 1971, apply if the pipeline substantially meets those requirements before it isreadied for service or it is a segment which is replaced, relocated, or substantiallyaltered.Origin of CodeLast AmendmentInterpretationSummariesNGPSA of 1968[Amdt. 192-30, 42 FR 60146, Nov. 25, 1977]AdvisoryBulletin/AlertNotice SummariesOther ReferenceMaterial & SourceIndustry StandardsGuidanceInformation1. First, if the line was substantially in compliance with §192.455 prior to conversion,§192.455 still applies and the CP system must be continuously maintained per therequirements of Subpart I.2. Second, if the line was not substantially in compliance with §192.455, the linemust meet the requirements of §192.457 within 1 year of conversion.3. Any pipeline segment that is replaced, relocated, or substantially altered mustalso meet the requirements of §192.455.4. Note: “Substantially” means that if CP was installed and applied to the pipeline,even though records may not be available to demonstrate that all of therequirements of Subpart I were met, the CP system must be maintained and broughtinto compliance with all requirements of Subpart I within 1 year.Examples of aProbableViolation orInadequateProcedures1. The operator has a pipeline that was under CP prior to conversion but did notmaintain the CP per the requirements of §192.455.2. The operator has a pipeline that was not under CP prior to conversion and did notinstall CP within 1 year per the requirements of §192.457.3. The operator replaced, relocated, or substantially altered a pipeline segment thatdoes not meet the CP requirements of § 192.455.6
Depending on the circumstances, some of the examples listed in this section may beinadequate plans and procedures, and not probable violations. Thus, theenforcement tool to address these issues would be a Notice of Amendment and nota Notice of Probable Violation or a Warning Letter. Section 3 of the EnforcementProcedures provides guidance on selecting the appropriate enforcement action.Examples ofEvidence1. Lack of documentation or inadequate field tests and surveys for the pipeline to beconverted to determine whether CP substantially met the requirements of §192.455and to insure that cathodic protection was applied to the pipeline to meet therequirements of Subpart I within 12 months of the conversion. The tests and surveysmay include electrical surveys, pipe examination, coating examination, currentrequirement tests and soil tests. Lack of documentation to demonstrate that thepipeline was evaluated to determine whether CP was required under the provisionsof §192.457. Lack of documentation to demonstrate that CP was applied asrequired by §192.455 to any pipeline segment that was replaced, relocated, orsubstantially altered.Other SpecialNotations7
EnforcementGuidanceCORROSION Part 192Revision Date12/7/2015Code Section§192.452(b)Section TitleHow does this subpart apply to converted pipelines and regulated onshoregathering lines?Existing CodeLanguageRegulated Onshore Gathering Lines. For any regulated onshore gathering lineunder §192.9 existing on April 14, 2006, that was not previously subject to this part,and for any onshore gathering line that becomes a regulated onshore gathering lineunder §192.9 after April 14, 2006, because of a change in class location or increasein dwelling density:(1) The requirements of this subpart specifically applicable to pipelines installedbeforeAugust 1, 1971, apply to the gathering line regardless of the date the pipelinewasactually installed; and(2) The requirements of this subpart specifically applicable to pipelines installed afterJuly 31, 1971, apply only if the pipeline substantially meets those requirements.Origin of CodeNGPSA of 1968Last Amendment[Amdt. 192-30, 42 FR 60146, Nov. 25, 1977; Amdt 192-102, 71 FR 13303, Mar. ertNotice SummariesOther ReferenceMaterial & SourceIndustry Standards, GlossaryGuidanceInformation1. First, If the line was substantially in compliance with §192.455 prior to becoming aregulated onshore gathering line, §192.455 still applies and the CP system must becontinuously maintained per the requirements of Subpart I.2. Second, if the line was not substantially in compliance with §192.455, the linemust meet the requirements of 192.457 within 1 year of becoming a regulatedonshore gathering line.3. Note: “Substantially” means that if CP was installed and applied to the pipeline,even though records may not be available to demonstrate that all of therequirements of Subpart I were met, the CP system must be maintained and broughtinto compliance with all requirements of Subpart I within 1 year.8
Examples of aProbable Violationor InadequateProcedures1. The operator has a pipeline that was under CP prior to becoming a regulatedonshore gathering line but did not maintain the CP per the requirements of 192.455.2. The operator has a pipeline that was not under CP prior to becoming a regulatedonshore gathering line and did not install CP within 1 year per the requirements of192.457.Depending on the circumstances, some of the examples listed in this section may beinadequate plans and procedures, and not probable violations. Thus, theenforcement tool to address these issues would be a Notice of Amendment and nota Notice of Probable Violation or a Warning Letter. Section 3 of the EnforcementProcedures provides guidance on selecting the appropriate enforcement action.Examples ofEvidence1. Lack of documentation or inadequate field tests and surveys for the pipeline tobecome a regulated onshore gathering line to determine whether CP substantiallymet the requirements of §192.455 and to insure that cathodic protection was appliedto the pipeline to meet the requirements of Subpart I within 12 months of theconversion. The tests and surveys may include electrical surveys, pipe examination,coating examination, current requirement tests and soil tests. Lack ofdocumentation to demonstrate that the pipeline was evaluated to determine whetherCP was required under the provisions of §192.457.Other SpecialNotations9
EnforcementGuidanceCORROSION Part 192Revision Date12/7/2015Code Section§192.453Section TitleGeneralExisting CodeLanguageThe corrosion control procedures required by §192.605(b)(2), including those for thedesign, installation, operation, and maintenance of cathodic protection systems,must be carried out by, or under the direction of, a person qualified in pipelinecorrosion control methods.Origin of CodeNGPSA 1968Last Amendment[Amdt. 192-71, 59 FR 6575, Feb. 11, 1994]InterpretationSummariesInterpretation: PI-92-062 Date: November 23, 1992This interpretation clarifies that an operator is in compliance with § 192.463(a) aslong as each point tested under § 192.465(a) meets any one of the Appendix Dcriteria or its equivalent. If further clarifies that no additional test data are requiredprovided one of the criteria of the Appendix D is met. Lastly, the interpretationclarifies that the operator's corrosion control procedures under § 192.453 should, ata minimum, specify the criterion used for each segment of its pipeline.Interpretation: PI-ZZ-066 Date: November 3, 1986Clarifies that Section 192.453 notes that a NACE certification is not specificallyrequired, but would be considered in determining a person’s qualifications.Furthermore, this interpretation clarifies that the Department of Transportation doesnot certify qualified persons.Interpretation: PI -78-017 Date: June 20, 1978Clarifies that Section 192.453 acknowledges that some corrosion contractors are notqualified, but that section 192.453 does not regulate such contractors, and theoperator is ultimately responsible for compliance with section 192.453 Subpart Iregulations. This interpretation also clarifies that
§192.461 External corrosion control: Protective coating Section 192.461(d) . 33 §192.461 External corrosion control: Protective coating Section 192.461(e) . 34 §192.463 External corro
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