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Section §180.605: Requirements for periodic testing, inspection and repair of portable 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 180.605 on the ECFR website

Interpretation Responses

Ref ID Date Company Name Individual Name Response Document
22-0005 Desert Isle Inc., Lahaina Air Conditioning, Ltd. Peter Faulkner View
22-0004 OSM, LLC Ann Fukunaga View
21-0020 Transport Canada, Ontario Region Brent Grice View
06-0280 ExxonMobil Chemical Company Mr. Ronald J. Stokes View
09-0180 Burdette & Associates, Inc. Mr. Michael Burdette View
14-0033 Canyon State Oil Mr. Jason Delto View
11-0104 Transport Canada, Ontario Region Mr. Jasbir Grover View
03-0246 Degussa Corporation Mr. John Foglio View
04-0007 Peldev Mr. D.E. Williams View
04-0250 FMC Corporation Mr. Michael Jones View
07-0069 Manager Transportation Regulations and Security Mr. Mark Connolly  View
16-0063 The Dow Chemical Company Mr. John Jeater View
08-0140 Burdette & Associates, Inc. Michael Burdette, P.E. View