# The Council on Safe Transportation of Hazardous Articles, Inc. — Hazardous Materials Safety Interpretation

- **operation:** document
- **citation:** 09-0221
- **title:** The Council on Safe Transportation of Hazardous Articles, Inc. — Hazardous Materials Safety Interpretation
- **source type:** guidance
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** guidance
- **official:** true
- **published on:** 2010-02-05
- **effective on:** Not available
- **summary:** 09-0221 response to The Council on Safe Transportation of Hazardous Articles, Inc. concerning 175.501, 175.8.
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/phmsa-interpretation-09-0221.json
- **markdown:** https://regulus.evalyn.ai/document/phmsa-interpretation-09-0221.md
- **app url:** https://regulus.evalyn.ai/document/phmsa-interpretation-09-0221
- **source url:** https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretations/2009/090221.pdf
**body:**

<<<PAGE 1>>>

u.s. Department 1200 New Jersey Ave., SE
of Transportation Washington. DC 20590
Pipeline and Hazardous Materials
Safety Administration
FEB 5 2010
Mr. Tom Ferguson
Technical Consultant
The Council on Safe Transportation
of Hazardous Articles, Inc.
7803 Hill House Court
Fairfax Station, VA 22039
Ref. No.: 09-0221
Dear Mr. Ferguson:
This responds to your September 24, 2009 letter regarding requirements for oxidizers and
compressed oxygen when cylinders are transported by air under the Hazardous Materials
Regulations (HMR; 49 CFR Parts 171-180). Specifically, you ask whether oxygen cylinders
transported by an airline for use by cabin crews in the event of smoke or depressurization in
the cabin are eligible for the exceptions provided in § 175.501(e).
The answer is no. Section 175.501(e) applies only to medical-use compressed oxygen that is
either owned or leased by the air carrier for passenger use during flights or offered for
transportation by a passenger needing it for personal medical use at a destination. Oxygen
cylinders transported by an airline to be used in the event of an emergency on board the
aircraft must be transported in accordance with the requirements in § 175.8(a) regarding
airworthiness and items of replacement (company material (COMAT)).
I trust this satisfies your inquiry. Please contact us if we can be of further assistance.
Sincerely,
1~-----
Hattie L. Mitchell
Chief, Regulatory Review and Reinvention
Office of Hazardous Materials Standards

<<<PAGE 2>>>

September 24, 2009
President
Robert Heinr'ich
Novartis Pharmauuticals
Robert.Heinrich@novanis.com
First Vice Presideot
Donald Bossow
JobnsonDiver"Sey,lltc.
donald.bossow@johnoondiversey.com
Second Vice Pr'esidentIT reasurer
John D1Aloia
Mary Kay, Inc.
john.d'alaia@mkcorp.com
Secretary
Jeanne Z-mich
Labelmaster
JEANNEZ@a1c-net.com
Executive Committee Member
Richard Lattimer
Eli Lilly and Company
KLattimer@lilly.oom
Boa .. d ofDirectors
Jeanette DeGennaro
Thermo Fisher Scientific
jeanette.degennaro@fuermofisher.com
Steven Dishion
Procter &: Gamble
dishion.sl@pg.com
David Evans
Purolator Courier Ltd.
devans2@purolator.com
Amy Fischesser
Sun Chemical COl'por'ation
amy.fischesser@na.sunchem.com
Alicia Gaines
Abbott Laboratories
aJicia.gaines@abbott.com
Dave Madsen
Autoliv, Inc.
Dave.Madsen@autoliv.com
ruth Moskowitz
Amel'ican Trucking Association~ Inc.
rmoskowitz@trucking.org
- Christopher Palabl'ica, CPM, CHMM
Mays Oemital Co.
chrisp@mayschem.com
General Counsel
Richard Schweitzer, PLLC
Office of Hazardous Materials Safety
Pipeline and Hazardous Materials Safety Administration
U.S. Department of Transportation •
1200 New Jersey Avenue, SE N I e..keJs
East Building, 2nd Floor ~ 115.g
Washington, DC 20590 ~ f15 . ~() I
Via: infocntr@dot.gov Ii .It f ndet!.., I
~ Oq.. 01.JA-I
The Council on Safe Transportation of Hazardous Articles
(COSTHA) includes within its membership a number of air
carriers that serve both domestic and internationl:ll
destinations. These carriers are subject to both 14 CFR and 49
CFR requirements when transporting or shipping hazardous
materials, including company materials (COMAT). In PHMSA
Docket No. RSPA-04-17664 (HM-224B) Final Rule effective
October 1,2007, amendments were made to Parts 173 and
175, 49 CFR. Among those amendments included the
requirement of specific, performance-based packaging for
oxygen and oxidizer cylinders. As you are aware, commercial
aircraft operate in a pressure-reduced atmosphere when at
altitude. Therefore, many carriers offer medical oxygen for use
by passengers who require it for proper respiratory functions
above 8,000 feet. In addition, carriers are required by the
Federal Aviation Administration (FAA) to maintain additional
oxygen cylinders on board for emergency oxygen for the 'flight
and cabin crew in the case of smoke in the cabin or
depressurization. Thus, this rule has the potential to impact
both passenger medical oxygen as well as a carrier's
emergency medical oxygen programs.
Per 49 CFR 175.8(a){2), oxygen cylinders installed or carried
within the aircraft and used specifically for emergency crew
oxygen are not subject to the Hazardous Materials Regulations
(HMR) because such materials are required under
airworthiness requirements and operating regulations.
Paragraph (a)(3) of 49 CFR 175.8 also details that items of
replacement are subject to HMR, and must be handled and
transported accordingly. However, the HMR does provide
conditions which allow the transportation of oxygen cylinders in
the cabin of the aircraft within 49 CFR 175.501 (e). Specifically,
175.501 (e) states:
The Council on Safe Transportation of Hazardous Articles, Inc.
7803 Hill House Court Fairfax Station, VA 22039 Phone: 703/451-4031 Fax: 703/451-4207
mail@costha.com www.costha.com

<<<PAGE 3>>>

(e) A cylinder containing medical-use compressed oxygen, owned or leased by
an aircraft operator or offered for transportation by a passenger needing it for
personal medical use at destination, may be carried in the cabin of a passengercarrying
aircraft in accordance with the following provisions: ...
The paragraph goes on to specify quantity, size, and minimal packaging standards that
must be met. The definition of medical-use compressed oxygen is of particular
importance given the new requirements of HM-224B. Does oxygen required for
emergency medical use, owned or leased by the air carrier, and transported as
company materials qualify for this exception detailed in 175.510(e)? The wording
"owned or leased by an aircraft operator or offered for transportation by a passenger
needing it for personal medical use at destination [bold and italics added for emphasis]"
suggests that emergency medical oxygen bottles that are subject to the HMR (not
installed for airworthiness requirements) but transported as company materials are
indeed eligible for transport under 175.51 O(e).
Any clarification with this issue would be greatly appreciated by our membership.
Sincerely,
7~'9~
PG, CHMM, DGSA
Technical Consultant
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