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Section §173.309: Fire extinguishers

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 173.309 on the ECFR website

Interpretation Responses

Ref ID Date Company Name Individual Name Response Document
23-0036 National Association of Fire Equipment Distributors Mr. David A. Pelton View
21-0069 UL LLC Mr. Blake Shugarman View
21-0084 Koorsen Fire & Security Brick Keltner View
19-0052 GSI Training Services, INc. Sam Burton View
17-0087 Safecraft Inc. Steven Baker View
11-0196 Integrated Support Services Mr. Chuck Kimball View
98-0584 Amerex Corporation Mr. Fred B. Goodnight View
14-0018 URS Corporation Mr. Andy N. Romach View
06-0101 Buckeye Fire Equipment Company Mr. John Classic  View
99-0322 Firetrace Systems International, Inc. Mr. Len Seebaluck, P.Eng. View
12-0213 Senior Mechanical Engineer Mr. Mark Fazzio View
07-0139 Strike First Corporation Ms. Angie Williams View
13-0190 T-Aerospace, LLC Mr. Patrick Miller View
08-0218 First Alert BRK Brands, Inc. Mr. Brian J. Strasma View
15-0118 National Association of Fire Equipment Distributors Mr. Norbert Makowka View
12-0016 View
12-0075 Broward Fire Equipment and Service Inc. Mr. John A. Gioseffi View
16-0059 Ningbo Zhengxin Fire Fighting Equipment Co., Ltd Mr. Jacky Xie View
17-0052 Kidde Residential and Commercial Division Mr. Ronald Mauney View
13-0236 Komatsu America Corporation Ms. Roxanna Marchand View
08-0218R First Alert BRK Brands, Inc. Mr. Brian J. Strasma View
09-0242 DGD Inc. Mr. Luis Lopez View
07-0070 Fire Protection Certification Mr. Edward O"Brien View
10-0143 URS Corporation Mr. Andrew Romach View
12-0160 Donovan Marine, Inc. Mr. Keith Mauer View
04-0202 Safecraft Safety Equipment Mr. Donald E. Warren View
12-0231 SIEMENS Industry, Inc. Mr. Damien Belot View
08-0255 Tyco Safety Products Mr. Richard Seaburg View
00-0085 Safecraft Fire Protection Systems Mr. Donald E. Warren View