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Section §192.5: Class locations

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 192.5 on the ECFR website

Interpretation Responses

Ref ID Date Company Name Individual Name Response Document
PI-18-0015 Pacific Energy and Mining Company Mr. Dan Green View
PI-81-001 Memo: Internal Paul Biancardi View
PI-71-047 South Carolina Public Service Comm. Mr. Ray M. Kightlinger View
PI-82-014 Williams Brothers Engineering Company John Suglove View
PI-76-020 BASF Wyandotte Corporation John W. Milroy View
PI-93-044 Federal Energy Regulatory Commission Kevin P. Madden View
PI-95-0100 Algonquin Gas Transmission Company Mr. Donald R. Linger View
PI-71-0104 Office of the City Attorney Mr. Lawrence E. Christenson View
PI-95-0101 Environmental Affairs Columbia Gas Dr. Donald K. Gartman, Ph.D. View
PI-73-024 State Corporation Commission John A. Elliott View
PI-75-0108 Lovaca Gathering Company Mr. Jay C. Eichhorn View
PI-89-012 Memo: Internal View
PI-95-004 D. R. Linger View
PI-04-0106 Natural Resources Engineering Company Mr. Joseph Peterson View
PI-07-0102 Enterprise Products Company Mr. Joel E. Kohler, P.E. View
PI-76-059 Memo: Internal View
PI-91-016 Columbia Gulf Transmission Company Scott Collier View
PI-74-0146 Mr. Richard T. Logan View
PI-76-0103 View
PI-77-0104 View
PI-14-0017 Air Products and Chemicals, Inc. Mr. Jody R. Arner View
PI-10-0024 XTO Energy, Inc. Ms. Alice Ratcliffe View
PI-71-071 Gleason Romans Pipe Line Patrol Company A. E. Purvis View
PI-93-061 Engineering and Construction Terry M. Winter View
PI-76-004 BASF WYANDOTTE Corporation John W. Milroy View
PI-77-017 Williams Brothers Engineering Company Leo R. Kenyon View
PI-95-044 Columbia Gas Donald K. Gartman, Ph.D. View