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Section §174.67: Tank car unloading

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 174.67 on the ECFR website

Interpretation Responses

Ref ID Date Company Name Individual Name Response Document
00-0009 Shell Chemical Company Mr. William Reinike View
07-0136 Bolds & Associates, LLC Mr. James J. Bolds      View
10-0104 Wacker Polymers Mr. Edwin McIntyre View
06-0114 Musket Corporation Mr. Doug Lumry  View
02-0065 Glen Gillaspia View
02-0071 View
99-0217 LaRoche Industries Inc. Mr. Carlton W. Hendrix View
99-0279 Georgia-Pacific Corporation Ms. Becky Clark View
99-0153 H.B. Fuller Company Mr. Eugene J. Secor View
99-0185 AMBAR Chemical Mr. Greg Pyle View
02-0199 Shell Chemical LR DavidJ. Mashinski View
04-0009 Air Products and Chemicals, Inc. Mr. Richard J; Lloyd View
04-0087 ATOFINA Chemicals, Inc. Ms. Christina M. Kurtz View
04-0115 Sunoco, Inc. Neville Island Plant Mr. Michael D. Alston View
05-0129 Pace International Union Mr. Randy Johnson View
05-0130 ABC Coke Mr. William R. Mason View
02-0304 PACE International Union Rickie Bearden View
99-0301 Shell Chemical Company Mr. David J. Mashinski View
09-0209 INDSPEC Chemical Corporation Ms. Vicki H. Weightman View
02-0027 Calvert City, KY Emulsions Plant, Air Products & Chemicals A & Joe Campbell View
06-0184 Musket Corporation Mr. Doug Lumry View
06-0198 DuPont Global Logistics Mr. Kevin M. Greene View
08-0288 Kaplan Kirsch & Rockwell LLP Mr. Charles A. Spitulnik View