# Vinson & Elkins — Hazardous Materials Safety Interpretation

- **operation:** document
- **citation:** 06-0049
- **title:** Vinson & Elkins — Hazardous Materials Safety Interpretation
- **source type:** guidance
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** guidance
- **official:** true
- **published on:** 2006-04-06
- **effective on:** Not available
- **summary:** 06-0049 response to Vinson & Elkins concerning 171.1.
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/phmsa-interpretation-06-0049.json
- **markdown:** https://regulus.evalyn.ai/document/phmsa-interpretation-06-0049.md
- **app url:** https://regulus.evalyn.ai/document/phmsa-interpretation-06-0049
- **source url:** https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/2006/060049.pdf
**body:**

<<<PAGE 1>>>

S. Departme
Transportatic
APR 6 2006
Washington, D.C. 20590
400 Seventh Street, S.W.
Pipeline and
Administration
Hazardous Materials Safety
Thomas H. Wilson
Ref. No. 06-0049
Vinson & Elkins
First City Tower
Houston, TX 77002-6760
1001 Fannin Street, Suite 2300
Dear Mr. Wilson:
This is in response to your January 3, 2006 letter and telephone conversation with a
member of my staff requesting clarification regarding the applicability of the Hazardous
Materials Regulations (HMR; 49 CFR Parts 171-180). In your scenario, your client has
cylinders filled with a Division 2.2 non-flammable gas that is used to power a portable
generator. You ask when the requirements of the HMR would apply to these cylinders.
The HMR apply to transportation of hazardous materials in commerce. Transportation in
commerce begins when a carrier takes physical possession of the filled cylinders for
purposes of transporting them and continues until delivery of the cylinders to their
destination as evidenced by the shipping documentation under which the filled cylinders
are moving, such as shipping papers, bills of lading, freight orders, or similar
documentation. The HMR also apply to pre-transportation functions such as selecting an
authorized cylinder, marking and labeling, and preparation of the shipping papers.
I hope this information is helpful.
Sincerely,
Hothe z. Michel
Hattie L. Mitchell, Chief
Regulatory Review and Reinvention
Office of Hazardous Materials Standards
WHIN
171./
060049

<<<PAGE 2>>>

Saterthwaite
8171.1
Applicability
Thomas H. Wilson twilson@velaw.com
Tel 713.758.2042 Fax 713.615.5704
06-0049
January 3, 2006
VIA CMRRR #7003 3119 0033 1955 4957
Mr. Joseph Solomey
Assistant Chief Counsel
U.S. Department of Transportation
A ll:
Pipeline and Hazardous Materials Safety Administration
Office of Chief Counsel
CO
400 Seventh Street, SW
Room 8417
Washington, DC 20590
Dear Mr. Solomey:
On behalf of one of our clients, we request a written interpretation on the applicability
of the federal hazardous materials transportation law, 49 U.S.C. § 5101 et seq. (formerly the
Hazardous Materials Transportation
Act (HMTA)), and!
the Hazardous Materials
Regulations, 49 C.F.R. Parts 171-180, to the use and refilling of compressed gas cylinders as
described below.
Our client is in the development stage of a new product that is intended for sale
throughout the United States. The product uses compressed air to power a small turbine for
mission-critical backup power systems. The client has two options at its disposal for refilling
the gas cylinders, or 2) refill the gas cylinders using a compressor at the point of use.
gas cylinders after a demand event: 1) call a local gas distributor and request replacement ot
Our client believes, and we request your concurrence, that in order to use option 1,
the cylinders must comply with the laws and regulations mentioned above. We also believe,
and request your concurrence, that if our client's customers choose to refill their own
gas cylinders as described herein meets the definition of transport cylinders and does not
other words, we request agreement. with our opinion that the use and refilling of compressed
constitute stationary storage.
Vinson & Elkins LLP Attorneys at Law Austin Beijing Dallas Dubai
Houston Lordon Moscow New Yark Shanghai Tokyo Washington
First City Tower, 1001 Fannin Street, Suite 2300. Houston, TX 77002-6760
Tel 713.758.2222 Fax 713.758.2346 www.velaw.com

<<<PAGE 3>>>

Mr. Joseph Solomey January 3, 2006 Page 2
If you have any questions on this matter, please do not hesitate to contact me. Thank
you in advance for your assistance in this matter.
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