# Medical Services of America — Hazardous Materials Safety Interpretation

**Citation:** 07-0102  
**Type / status:** guidance / guidance  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2007-06-25

07-0102 response to Medical Services of America concerning 171.8, 172.504.

## Document text

<<<PAGE 1>>>

of Transportation
U.S. Department
200 New Jersey Ave. S
ashington, DC 2059
Pipeline and Hazardous
Materials Safety
JUN 252007
Administration
Mr. Wayne R. Cromley
Ref. No.: 07-0102
Corporate Safety & Risk Management Director
171 Monroe Lane
Medical Services of America
P.O. Box 1928
Lexington, South Carolina 29071
Dear Mr. Cromley:
This is in response to your May 8, 2007 letter requesting clarification of the Hazardous
Materials Regulations (HMR; 49 CFR Parts 171-180). Specifically, you ask for
clarification on the placarding requirements under § 172.504 when transporting a non-
flammable gas such as, "Oxygen, refrigerated liquid (cryogenic liquid), 2.2, UN1073" in a
packaging that has the capacity to hold 200 liters/777 pounds of liquid. Additionally, you
for "bulk packaging" in § 171.8.
ask whether the packaging qualifies as a bulk packaging in accordance with the definition
The answer to both questions is no. As provided by § 172.504(c), except for bulk
packagings and hazardous materials subject to § 172.505, a transport vehicle carrying less
than 454 kg (1,001 pounds) aggregate gross weight (packaging plus contents) of Table 2
hazardous materials need not be placarded. When calculating the 454 kg (1,001 pounds)
aggregate gross weight, only the weight of Table 2 hazardous materials in non-bulk
packaging which has a maximum capacity of 450 L (119 gallons) or less as a receptacle for
packaging needs to be included. A non-bulk packaging, as defined in § 171.8 means a
a liquid. As stated in your letter, your container has a maximum capacity of 200 L (52.8
bulk packaging.
gallons) therefore: your container would be considered a non-bulk packaging and not a
I hope this information is helpful. If you have further questions. please do not hesitate to
contact this office.
Sincerely:
Charles E. Betts
Senior Transportation Specialist
Office of Hazardous Materials Standards
171.8
172.504
070102

<<<PAGE 2>>>

MEDICAL SERVICES OF AMERICA, INC.
MSA
171 Monroe Lane • P.O. Box 1928
[8031 957-0500 • FAX (888) 342-6190
Lexington, South Carolina 29071
Herrera
$172.504
Placarding
May 8, 2007
07-0102
Mr. Edward Mazzullo
Pipeline and Hazardous Materials Safety Administration
U.S. Department of Transportation
1200 New Jersey Avenue, SE East Building, 2nd Floor
Office of Hazardous Materials Safety
Washington, DC 20590
RE:
Letter of Interpretation
Dear Mr. Mazzullo:
In an effort to ensure safety and Hazmat compliance I am asking for written
clarification of the 172.504 General Placarding Requirements.
container will hold 200 liters/777 pounds of liquid. The DOT hazard class and ID# are
Comments/Question: We are going to deliver liquid oxygen in a basic Chevy van. Our
2.2 Non-Flammable, # UN1073. Does this qualify as a HAZMAT bulk and do we need
to placard the van?
When looking at 171.8 it gives a good definition of Bulk Vs Non-Bulk but it does leave
something open to interpretation.
Sincerely,
Wagag
Wayne R. Cromley
Medical Services of America
803-358-6775
Corporate Safety & Risk Management Director

## Provenance

- Official: Yes
- Source: <https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/2007/070102.pdf>
- Source ID: `phmsa`
- SHA-256: `13fe6554303e4dc763d602b51923c659b7d98e8cbaf57a2495d2a87dbaabd055`
- Retrieved: 2026-08-20T00:59:31.977Z
- Exported: 2026-08-22T14:52:49.074Z
- Document slug: `phmsa-interpretation-07-0102`

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