# Georgia Department of Public Safety — Hazardous Materials Safety Interpretation

**Citation:** 07-0034  
**Type / status:** guidance / guidance  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2007-09-20

07-0034 response to Georgia Department of Public Safety concerning 172.328, 173.315.

## Document text

<<<PAGE 1>>>

.S. Deparmer
f Transportatio
400 Seventh Street, S.W.
Washington, D.C. 20590
pinteria sate Administration
SEP 20 2007
Captain Bruce Bugg
Ref. No. 07-0034
Motor Carrier Compliance Division
jeorgia Department of Public Satet
P.O. Box 1456
Atlanta, GA 30371-1456
Dear Captain Bugg:
This responds to your February 12, 2007 letter requesting clarification on the
applicability of § 172.328(d) of the Hazardous Materials Regulations (HMR; 49 CFR
equipped with remote emergency closures, or only to specification cargo tanks that are
Parts 171-180). Specifically, you ask if this section applies to any cargo tank that is
required to have self-closing internal stop valves.
Section 172.328(d) requires that after October 3, 2005, each on-vehicle manually-
activated remote shutoff device for closure of the internal self-closing stop valve must be
identified by marking "Emergency Shutoff" in letters at least 0.75 inches in height, in a
color that contrasts with its background, and located in an area immediately adjacent to
remote emergency closures. These cargo tanks include MC 330 and MC 331
the means of closure. This requirement applies to any cargo tank that is equipped with
specification cargo tanks under Part 180, Subpart E, as well as non specification cargo
tanks carrying liquefied petroleum gas in accordance with provisions in § 173.315(k).
I hope this answers your inquiry.
Sincerely,
( Chief, Standards Development
Office of Hazardous Materials Standards
172.328 (d).
070034
173.315 (к)

<<<PAGE 2>>>

boothe
1 ago 1 us 1
3172328 (d)
Jarman, Erin <PHMSA>
Cargo Tanks Markings
From:
O.Bruce Bugg [obbugg@gsp.net]
07-0034
Sent:
Monday, February 12, 2007 1:02 PM
To:
INFOCNTR <PHMSA>
Subject: Request for clarification
This e-mail requests a written clarification of the applicability of 49 CFR §172.328(d):
"(d) After October 3, 2005, each on-vehicle manually-activated remote shutoff device for closure of the internal
in a color that contrasts with its background, and located in an area immediately adjacent to the means of
self-closing stop valve must be identified by marking "Emergency Shutoff" in letters at least 0.75 inches in height,
Does this section apply to any cargo tanks which are equipped with remote emergency closures, or only to
Specification Cargo Tanks which are required to have self-closing internal stop valves?
Capt. Bruce Bugg
ЛАЛЛЛАЛАЛЛАЛАЛАЛАЛАЛАЛЛЛ^ЛАЛАЛАЛАЛ^АЛЛАЛАЛАЛА
Motor Carrier Compliance Division
Georgia Department of Public Safety
P.O. Box 1456
Atlanta, GA 30371-1456
Fax: 404.624.7295
Phone: 404.624.7211 or 7210
e-mail: obbugg(at)gsp.net [replace "(at)" with "@"]
2/13/2007

## Provenance

- Official: Yes
- Source: <https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/2007/070034.pdf>
- Source ID: `phmsa`
- SHA-256: `73ce9b22d04990e6cb3b86ce99b107ef9a699364119bd8cd6f75646843ef5f60`
- Retrieved: 2026-08-20T00:59:31.977Z
- Exported: 2026-08-23T13:17:41.016Z
- Document slug: `phmsa-interpretation-07-0034`

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