# Fire Protection Certification — Hazardous Materials Safety Interpretation

**Citation:** 05-0266  
**Type / status:** guidance / guidance  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2005-11-21

05-0266 response to Fire Protection Certification concerning 180.213.

## Document text

<<<PAGE 1>>>

J.S. Departmen
f Transportation
400 Seventh Street, S.W
Washington, D.C. 20590
Pipeline and
Hazardous Materials Safety
Administration
NOT 11
Mr. Edward O'Brien
Reference No.: 05-0266
Fire Protection Certification
8719 Pete Wiles Road
Middletown, MD 21769
Dear Mr. O'Brien:
This responds to your letter concerning the cylinder requalification marking requirements
under the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180). Specifically,
you ask it a pressure sensitive label displaying the requalification markings may be
›laced on the sidewall of a composite (fiber wrapped) cylinder used as a fire
extinguisher.
Section 180.213(c)(1) authorizes a cylinder used as a fire extinguisher to be marked by
using a pressure sensitive label. It is permissible to place the label on the sidewall of a
cylinder. Stamping the markings on the cylinder sidewall or any part of the fiber
wrapped surface is prohibited.
I trust this satisfies your request.
Sincerely,
Hattie L. Mitchell
Chief, Regulatory Review and Reinvention
Office of Hazardous Materials Standards
BUT HAH
180.213
050266

<<<PAGE 2>>>

F
FIRE PROTECTION CERTIFICATION
P
8719 Pete Wiles Road • Middletown, Md. 21769
C
(301) 371-8685 • (888) 670-2965 • Fax: (301) 371-4528
AFPA
LTD
MEMBER
Email: fpcitd@aol.com
Web: www.fpcitd.com
Corbin
$/80.213
Markings
October 12, 2005
05:0266
U.S. Dept. of Transportation
Office of Hazards Materials Standards OHMS
Attn: Edward Mazzullo
400 Seventh Street SW
Washington, DC 20590
Re: interpretation of placement of labels
In section 180.213 b of 49 CFR it states, referencing marking " unless
authorized by cylinder specification, marking on the cylinder sidewall is
prohibited". Section 180.2130 (1) states, a cylinder used as a fire extinguisher
may be marked using a pressure sensitive label. It has been the practice that fiber
wrapped cylinders when requalified are marked with a label that is affixed to the
cylinder sidewall and epoxied.
The request for interpretation is, does the prohibiting of sidewall marking
such as fire extinguishers and fiber wrapped cylinders can be placed on the side
apply to stamping of a cylinder only and that labels attached to requalified cylinders
wall of these cylinders?.
Sincerely
Scondo Broni
Edward O'Brien

## Provenance

- Official: Yes
- Source: <https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/2005/050266.pdf>
- Source ID: `phmsa`
- SHA-256: `11a267c57af1cf9eb02d7cc4ceca56fa75a68af3b6278c3e7063da8a5d609bc8`
- Retrieved: 2026-08-20T00:59:31.977Z
- Exported: 2026-08-23T14:53:29.880Z
- Document slug: `phmsa-interpretation-05-0266`

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