# Holland & Knight LLP — Hazardous Materials Safety Interpretation

- **operation:** document
- **citation:** 11-0150
- **title:** Holland & Knight LLP — Hazardous Materials Safety Interpretation
- **source type:** guidance
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** guidance
- **official:** true
- **published on:** 2011-08-12
- **effective on:** Not available
- **summary:** 11-0150 response to Holland & Knight LLP concerning 171.25, 173.185, 173.22, 173.220.
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/phmsa-interpretation-11-0150.json
- **markdown:** https://regulus.evalyn.ai/document/phmsa-interpretation-11-0150.md
- **app url:** https://regulus.evalyn.ai/document/phmsa-interpretation-11-0150
- **source url:** https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretations/2011/110150.pdf
**body:**

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U.S. Department 1200 New Jersey Avenue SE
of Transportation Washington. DC 20590
Pipeline and Hazardous
Materials Safety
Administration AtJG 1 22Un
Mr. Jonathan Epstein
Holland & Knight LLP
2099 Pennsylvania Ave, N.W.
Suite 100
Washington, DC 20006
Ref. No.: 11-0150
Dear Mr. Epstein:
This responds to your June 20, 2011 letter requesting clarification of the Hazardous
Materials Regulations (HMR; 49 CFR Parts 171-180) applicable to battery-powered
equipment and lithium batteries.
In your letter, you state that your client, Toro Company (Toro), has designed a new
product that is a commercial grade self-propelled walk behind mower designed to be used
on golf courses. You state that the mower (a.k.a., eFlex) is powered by a 58 volt lithiumion
battery pack that is semi-permanently affixed to the eFlex chassis and would not
normally be removed except for maintenance. You also state that the battery pack is
affixed securely in a battery holder and protected in a manner to prevent short circuit or
damage and housed within a glass filled nylon protective enclosure that is vented to allow
dissipation of heat. You further state that the lithium batteries have been tested to meet
UN test criteria as prescribed in the HMR under § 173.185. Finally, you provide an
attachment of the specifications of the eFlex mower with your letter. Your questions are
paraphrased and answered below. .
01: You ask whether the eFlex mower is properly classified as "UN3171, Batterypowered
equipment" instead of"UN3091, Lithium batteries, contained in
equipment?"
AI: In accordance with § 173.22, it is the shipper's responsibility to properly classify and
describe a hazardous material. This Office does not perform that function. However,
when reviewing the specifications of the eFlex mower you provided, the answer is
yes. In addition, for "UN3171, Battery-powered equipment," Special Provision 134
in § 172.202 states that "this entry only applies to vehicles, machinery and equipment
powered by wet batteries, sodium batteries, or lithium batteries that are transported
with these batteries installed. Examples of such items are electrically-powered cars,
lawn mowers, wheelchairs, and other mobility aids." UN3171 is a proper

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classification for the eFlex mower as it is a battery-powered piece of mechanized
equipment that would normally be powered by an internal combustion engine.
Q2: You ask whether the eFlex mower containing an installed lithium ion battery pack
can be shipped by ground in the U.S. in accordance with the exceptions provided in
§ 173.220?
. A2: The answer is yes. Provided a shipment of eFlex mowers comply with the
requirements in § 173.220, a shipper would be able to utilize the appropriate
exceptions (such as § 173.220(h)(1)).
Q3: You ask whether the eFlex mower can be shipped by vessel as "UN3171, Batterypo~ered
equipment" under the International Maritime Dangerous Goods (lMDG)
Code?
A3: The answer is yes. As specified in § 171.2S(b)(4), any person who offers for
transportation or tram;ports a hazardous material consigned under "UN3166" and
"UN3171" may be prepared in accordance with the IMDG Code or this subchapter.
I trust this satisfies your inquiry. Please contact us if we can be of further assistance.
Sincerely,
~~~~-'-....
T. Glenn Foster
Chief, Regulatory Review and Reinvention Branch
Standards and Rulemaking Division

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Holland & Knight s\13·220
2099 Pennsylvania Avenue, N.W., Suite 100 I Washington, DC 20006 I T 202.955.3000 I F 202.955.5564
Holland & Knight LLP I www.hklaw.com
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Jonathan M, Epstein
(202) 828-1870
jonathan.epstein@hklaw.com
June 20, 2011
VIA: UPS
U.S. Department of Transportation
Attn: PHH-I0
Office of Hazardous Materials Standards
Pipeline and Hazardous Materials Safety Administration
East Building
1200 New Jersey Avenue, SE
Washington, DC 20590-0001
Re: Request for Interpretation - eFLEX Self-Propelled Commercial Mower Powered by a
Lithium Ion Battery under HMR and IMDG Code
Dear SirlMadam:
On behalf of the Toro Company ("Toro"), we hereby submit this request for clarification
ofthe classification and shipping requirements for the Toro eFLEX Lithium Ion battery-powered
mower, pursuant to 49 C.F.R. § 105.20 of the Hazardous Materials Regulations (nHMR").
Based on our review ofthe applicable regulations and discussion with a Pipeline and
Hazardous Materials Agency ("PHMSA") official, 1
we believe that the eFLEX is classifiable as
"Battery-Powered Equipment (UN 3171)" and not as "Lithium Batteries, contained in equipment
(UN 3091)." However, in order to avoid future confusion by logistics providers, we request this
clarification.
A. Description of eFLEX
The eFlex is a new product designed by Toro which will soon be in production. It is a
commercial grade self-propelled walk behind mower designed to be used on golf courses. It is
powered by a 58 Volt Lithium-Ion battery pack that is semi-permanently affixed to the eFLEX
chassis and would not normally be removed except for maintenance. The battery pack is affixed
I Conference of Feb. 7, 2011, between Jonathan M. Epstein, Holland & Knight, and Kevin Leary, PHMSA.
Atlanta I Bethesda I Boston I Chicago I Fort Lauderdale IJacksonville I Lakeland I Los Angeles I Miami I New York
Northern Virginia IOrlando IPortland ISan Francisco ITallahassee ITampa IWashington, D,C, IWest Palm Beach
Abu Dhabi IBeijing I Mexico City

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U.S. Department of Transportation
June 20, 2011
Page 2
securely in a battery holder and protected in a manner to prevent short circuit or damage and
housed within a glass filled nylon protective enclosure that is vented to allow dissipation ofheat.
The lithium batteries have been tested to and met UN test criteria as prescribed in HMR §
173.185. See attached specifications at Enclosure A.
B. Specific Questions
1. Is the eFLEX properly classifiable as "Battery-Powered Equipment (UN 3171)"
rather than as "Lithium Batteries, contained in equipment (UN 3091)"?
The HMR table entry for Battery-Powered Equipment (UN 3171) calls out for the use of
special packing instructions HMR § 173.220 which applies to "[a]n internal combustion engine,
selfpropelled vehicle, mechanized equipment containing an internal combustion engine, a
battery powered vehicle or equipment . .. when transported as cargo . ... /I This table entry also
references special provision 134 (HMR § 173.l02(c)), which states:
This entry only applies to vehicles, machinery and equipment powered by
wet batteries, sodium batteries, or lithium batteries that are transported
with these batteries installed Examples ofsuch items are electricallypowered
cars, lawn mowers. wheelchairs, and other mobility aids . ...
Hence, UN 3171 would appear to be the proper classification for the eFLEX, a batterypowered
piece of mechanized equipment that would otherwise normally be powered by an
internal combustion engine. We understand that the classification Lithium Batteries contained in
equipment is not intended to apply to lithium battery-powered machinery, but rather to lithium
battery-powered electronics such as laptop computers. There are several interpretations by
PHMSA on point. In 2009, PHMSA found that the lithium battery-powered floor scrubber was
classified under lJN 3171, and that it should be packed under HMR § 173.220 rather than
HMR § 173.185.2 There is a similar ruling with respect to the lithium-powered Segway.3
2. May the eFLEX mower containing installed lithium ion battery pack be shipped
by ground in the United States in accordance with HMR exception § 173.220?
If the eFLEX is classifiable under UN 3 171, we presume that, if it meets the technical
criteria for shipment under HMR §173.220, it may be shipped under that provision and exempt
from other provisions ofthe HMR for shipment by ground in accordance with HMR
§ 173.220(g)(1).
2 PHMSA Interpretation No. 09-0197.
3 PHMSA Interpretation No. 05-0076.

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U.S. Department ofTransportation
June 20, 2011
Page 3
3. If Shipped by Sea, the eFlex would be classified as "Battery-Powered Eguipment"
(UN 3171) under the International Maritime Dangerous Goods ('IIMDG") Code
and shipped according to the reguirements set forth in the IMDG?
We understand that the IMDG can now be used for shipping items under UN 3171. On
January 19, 2011, PHMSA published a final rule harmonizing certain HMR provisions, inter
alia, with the IMDG.4 This rule added to HMR § 171.25 (Additional Requirements for the use
of the IMDG code) a new sub-section (b)( 4) that states: "Materials consigned under UN 3166
and UN 3171 (e.g., engines, internal combustion, etc., and Battery-powered equipment) may be
prepared in accordance with the IMDG Code or this Subchapter. 1/ This Rule goes into effect
January 1,2012, but voluntary compliance is allowed beginning January 1,2011. We note that
similar to the HMR, the IMDG Code's Special Provision 240 states that examples of batterypowered
equipment include "lawnmowers. n
Ifyou have any questions or require additional information, please do not hesitate to
contact me at (202) 828-1870, or bye-mail atjonathan.epstein@hkIaw.com.
Sincerely yours,
HOLLAND & KNIGHT LLP
D
athan M. Epstein
Enclosure:
A. Specifications of eFlex
4 PHMSA Final Rule, Hazardous Materials: Harmonization with the United Nations Recommendations,
International Maritime Dangerous Goods Code, and International Civil Aviation Organization Technical
Instructions/or the Safe Transportation o/Dangerous Goods by Air, 76 Fed. Reg. 3308 (Jan. 19,2011).
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