USA Banner

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation


Section §192.3: Definitions

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 192.3 on the ECFR website

Interpretation Responses

Ref ID Date Company Name Individual Name Response Document
PI-23-0010 B3PE LLC Mr. Brad Bean View
PI-11-0013 New Mexico Gas Company Ms. Deborah Brunt View
PI-21-0003 Pennsylvania Public Utility Commission Ms. Stephanie M. Wimer View
PI-20-0010 Counsel for MarkWest Mr. Keith J. Coyle View
PI-20-0003 Counsel for Markwest Mr. Keith J. Coyle View
PI-16-0013 MarkWest Javelina Pipeline Company, LLC Ms. Leanne M. Meyer View
PI-18-0001 Washington UTC Mr. Sean C. Mayo View
PI-07-0105 CPN Pipeline Company Mr. Scott Vickers View
PI-16-0015 Railroad Commission of Texas Ms. Stephanie Weidman View
PI-17-0002 West Virginia Department of Environmental Protection Ms. Ruth M. Porter View
PI-83-003 Colorado Public Utilities Commission Milt Schneider View
PI-91-0103 Arizona Corporation Commission Mr. Dan H. Weaklend View
PI-05-0100 Atlanta Gas Light Company Mr. Richard Lonn View
PI-74-0104 Mrs. Edward G. Buchholz View
PI-76-082 OPSO Advisory Bulletin View
PI-73-0101 Division of Pipeline Safety State of Nebraska Mr. Harley Minniear View
PI-83-007 Kim R. Henry View
PI-76-031 Indiana Public Service Commission Thomas P. VanArsdel, P.E. View
PI-71-0117 R & G Slaone Manufacturing Co Mr. R. W. McIntosh View
PI-73-0110 Public Works Department Ronald N. Hutton View
PI-70-0109 Columbia Gas System Service Corp Mr. Richard A. Rosan View
PI-74-0124 New Mexico State Corporation Commission Mr. John A. Elliott View
PI-72-0111 Corrosion Engineering Mr. Henry F. Galka View
PI-81-004 Memo: Internal Richard E. Sanders View
PI-01-0114 Gas Pipeline Safety Division Mr. Glynn Blanton View
PI-83-0102 View
PI-01-0111 Sempra Energy Ms. Joyce A. Padleschat Attorney View
PI-73-0111 Arizona Corporation Commission Mr. R. J. Bartol View
PI-75-010 New Jersey Natural Gas Company P. H. Reardon View
PI-84-0100 View
PI-93-057 State of Michigan Department of Labor Bureau of Construction Codes Robert J. Aben Jr. View
PI-74-0134 Gas Pipeline Safety Division Mr. T. K. Spalding View
PI-76-029 Alabama Public Service Commission Larry E. Waldrop View
PI-75-011 Kadlec Associates Joseph P. Kadlec, P.E. View
PI-76-0116 View
PI-73-039 Georgia Public Service Commission J. J. Crudup View
PI-01-0113 Montana Public Service Commission Mr. G. Joel Tierney View
PI-73-0109 Corrosion Associates, Inc Mr. William C. Doll View
PI-92-028 Commonwealth of Virginia Department of Mines, Minerals and Energy O. Gene Dishner View
PI-75-0112 Cox, Castle, Nicholson & Weekes Mr. Lance Jay Robbins View
PI-73-030 James H. Collins View
PI-09-0019 New Mexico Public Regulation Commission Mr. Joe M. Johnson View
PI-07-0103 Kinder Morgan, Inc. Mr. Bruce Hancock View
PI-71-0103 Department of Housing & Urban Development Mr. Robin H. Harbin View
PI-73-0103 Alan H. Smith Consulting Engineers, Inc. Mr. A. Roy Whitelock View
PI-75-0114 Luke Ernst and Associates, Inc. Mr. Luke Ernst View
PI-94-020 Memo: Internal View
PI-07-0100 National Transportation Safety Board Mr. Rod Dyck View
PI-79-013 Memo: Internal View
PI-83-0111 View
PI-01-0102 Washington Utilities and Transportation Commission Mr. Dennis E. Lloyd View
PI-01-002 Tennessee Regulatory Authority Mr. Glynn Blanton View
PI-09-0022 Kansas Corporation Commission Mr. Leo M. Haynos View
PI-92-010 The Public Utilities Commission of Ohio Edward M. Steele View
PI-84-004 Memo: Internal View
PI-01-0107 State of Maine Public Utilities Commission The Honorable Thomas L. Welch View
PI-75-042 Penns Grove Housing Authority Michael J. Maurizio View
PI-10-0014 City of LaGrange Mr. Patrick Bowie View
PI-70-004 American Meter Company H. F. Kruzan View
PI-72-049 NACE Accreditation No. 21 Charles Kirklen View
PI-73-017 Okaloosa County Gas District Jose N. Lozano View
PI-79-0102 View
PI-74-008 Robroy Industries Thomas G. Giles View
PI-09-0020 Illinois Commerce Commission Mr. Darin R. Burk View
PI-99-0105 City of Rolling Meadows Mr. Rodney A. Blane View
PI-72-051 Columbia Gas Service Company Don T. Caffery View
PI-71-0101 Natural Gas Distributing Co Mr. John G. Wilson View
PI-03-0101 Rhode Island Division of Public Utilities & Carriers Mr. Don A. Ledversis View
PI-13-0010 City of Susanville Mr. Craig Platt View
PI-71-0102 Public Service Commission Mr. T. K. Spalding View
PI-98-0103 All American Pipeline Company Mr. Jordan R. Janak View
PI-81-016 City of Wichita Falls Stuart A. Bach View
PI-81-008 Bentley Company Irvin G. Bentley View
PI-78-0110 View
PI-77-0101 View
PI-93-014 Washington Utilities and Transportation Commission Paul Curl View
PI-74-0153 Utah Public Service Commission Mr. Wayne L. Carlson View
PI-74-0121 New Mexico State Corporation Commission Mr. John A. Elliott View
PI-94-005 California Public Utilities Commission Russell W. Copeland View
PI-80-003 Memo: Internal View
PI-76-0118 View
PI-93-027 Memo: Internal View
PI-78-0105 View
PI-09-0009 Marathon Pipe Line L.L.C. Mr. Richard A. Abraham View
PI-77-012 Product Engineering ACF Industries, Inc. Charles C. Partridge View
PI-74-0114 Delmarva Power and Light Company Mr. Walter G. Robbins View