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Section §180.405: Qualification of cargo tanks

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 180.405 on the ECFR website

Interpretation Responses

Ref ID Date Company Name Individual Name Response Document
23-0014 Fleener Consulting LLC Mr. Arthur Fleener View
20-0033 Fleener Consulting LLC Mr. Arthur L. Fleener View
19-0006 United Petroleum Transport Randy Decker View
18-0118 HazMat Resources, Inc. Daniel Shelton View
16-0183 HazMat Resources, Inc Daniel Shelton
08-0043 Texas Railroad Commission Mr. James Osterhaus View
14-0072 Federal Motor Carriers Safety Administration (FMCSA) Mr. David Ford View
01-0119 White Tank and Truck Repai Mr. Clay Sutter View
98-0116 Fort Vale Mr. Don Kilgore View
98-0251 National Tank Truck Carriers, Inc Mr. Clifford J. Harvison View
03-0304 Mr. Thomas Lee Bartlett View
04-0174 California Environmental Protection Agency Mr. William V. Loscutoff View
14-0196 Lamb Fuels, Inc. Mr. Jeff Lisowski View