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Section §192.457: External corrosion control: Buried or submerged pipelines installed before August 1, 1971

Below are the available interpretations and guidance for the given section. To return to the list of parts, use the Parts link above. If you do not see any guidance or interpretation information below, that means there is none available for the given part/section. Return to the search page to browse additional regulations sections.

PHMSA has published several Frequently Asked Questions (FAQ) documents on regulatory topics. Please review our FAQ documents below:

Additionally PHMSA has Hazardous Materials FAQs based on letters of interpretation on the following topics:

This section of the website provides the ability to find regulations information including regulations parts, content of sections, and interpretations for regulations sections. Below is a list of parts, identified by the part number and subject. To browse sections by part, click on the subject link below. You will be taken to the eCFR website to view sections for a part.

A written regulatory interpretation, response to a question, or an opinion concerning a pipeline safety issue may be obtained by submitting a written request to the Office of Pipeline Safety (PHP–30), PHMSA, U.S. Department of Transportation, 1200 New Jersey Avenue SE., Washington, DC 20590–0001 or at the email address: In addition to email address, the requestor must include his or her return address and should also include a daytime telephone number. Requests should be submitted at least 120 days before the time the requestor needs a response.

Note: electronic submission is provided as alternative to the 49 CFR Part 190.11(b) mail-in requirement.

The regulations text of the section can be found on the eCFR website. To view the regulations text, use the link below. For assistance, please send an email to

View section 192.457 on the ECFR website

Interpretation Responses

Ref ID Date Company Name Individual Name Response Document
PI-76-016 Corrosion Associates Richard B. Bender View
PI-79-032 Memo: Internal View
PI-78-034 Gas Pipeline Safety Division Mr. T. K. Spalding View
PI-75-025 State of New York Robert L. Swartwout View
PI-72-022 West Va. Public Service Commission T. K. Spalding View
PI-73-039 Georgia Public Service Commission J. J. Crudup View
PI-76-030 Tennessee Public Service Commission John Searcy View
PI-75-037 Manager Corrosion Services Earl L. Kirkpatrick View
PI-72-025 Maryland Public Service Commission Charles C. Constantine View
PI-71-066 Associated Corrosion Consultants Ltd. H. M. Armstrong, P.E. View
PI-76-033 Transportation Safety Institute Edward J. Ondak View
PI-73-012 West Virginia Public Service Commission Mr. T. K. Spalding View
PI-82-012 Missouri Public Service Commission Dale W. Johansen View
PI-76-038 Jackson, LA Honorable James M. Norsworthy, Jr. View
PI-72-010 Gas Pipeline Safety Division T. K. Spalding View
PI-75-035 State of New York Robert L. Swartwout View
PI-72-0121 View
PI-76-039 City of White Deer Honorable Virgil James View
PI-75-001 Wyoming Public Service Commission Richard L. Valent View
PI-73-004 Cathodic Protection Service E. P. Doremus, P. E View
PI-93-035 West Virginia Public Service Commission Darrell A. McKown View
PI-76-019 West Virginia Public Service Commission T. K. Spalding View
PI-71-073 Citizens Gas & Coke Utility C. E. Kleis View
PI-76-035 View
PI-76-057 Yacht Harbor Mobile Park Sam McNeill View
PI-76-040 City of Three Rivers Raymond C. Black View
PI-76-056 IL Sorrento Mobile Home Park Victor C. Nelson View
PI-73-0117 Cape Cod Gas Company David E. Weber View
PI-76-060 Southview Investment Company David Charness View
PI-74-0103 Cathodic Protection Service Ted L. Canfield View
PI-76-055 City of Coalinga Kenneth H. Valley View
PI-72-033 ADB 72-8 View
PI-76-063 Marshall, Hawks, McKinney & Hendrix William T. Nichols View
PI-75-003 IBEW Local 1400 Richard P. Crawshaw View
PI-76-061 San Francisco Redevelopment Agency Arthur E. Evans View
PI-72-039 Maryland Public Service Commission Charles C. Constantine View
PI-76-071 Arkansas Public Service Commission Anthony Creston View
PI-76-036 Hillsdale Mobile Home Park Dr. Jules Larner View
PI-76-081 Board of the City of Florala Joseph A. Cox View
PI-76-052 M. J. Schiff and Associates M. J. Schiff View
PI-76-073 E. A. Hamilton View
PI-78-028 Memo: Internal View
PI-73-0100 Cathodic Protection Service Mr. E. P. Doremus, P.E. View
PI-76-010 Control Incorporated Earl L. Kirkpatrick View
PI-76-0121 Transportation Safety Institute Mr. Edward J. Ondak View
PI-76-007 Tennessee Public Service Commission John Searcy View
PI-77-025 Florida Public Service Commission Harold E. Janes View
PI-77-029 Memo: Internal View
PI-77-030 Public Service Commission of the District of Columbia Mary E. Brazelton View
PI-76-025 City of Bay City Mildred Nelsen View
PI-82-0105 View
PI-77-010 James A. Long View
PI-89-003 Montana-Dakota Utilities Company Tony J. Finneman View
PI-77-014 G&K Management Co., Inc. Sherman Gardner View