# North American Automotive Hazardous Materials Action Committee — Hazardous Materials Safety Interpretation

- **operation:** document
- **citation:** 12-0107
- **title:** North American Automotive Hazardous Materials Action Committee — Hazardous Materials Safety Interpretation
- **source type:** guidance
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** guidance
- **official:** true
- **published on:** 2012-08-31
- **effective on:** Not available
- **summary:** 12-0107 response to North American Automotive Hazardous Materials Action Committee concerning 173.166.
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/phmsa-interpretation-12-0107.json
- **markdown:** https://regulus.evalyn.ai/document/phmsa-interpretation-12-0107.md
- **app url:** https://regulus.evalyn.ai/document/phmsa-interpretation-12-0107
- **source url:** https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretations/2012/120107.pdf
**body:**

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U.S. Department
of Transportation
Pipeline and Hazardous
Materials Safety
Administration
AUG 1 p 2m2
I
Mr. Dave! Madsen
North A~erican Automotive Hazardous Materials Action Committee
3350 Airlj)ort Road
I
Ogden, U~ 84405
Referencd No.: 12-0107
i
Dear Mr. Madsen:
1200 New Jersey Avenue SE
Washmgton. DC 20590
This is in ;response to your May 22, 20 12 letter requesting clarification of the Hazardous
Materials:Regulations (HMR; 49 CFR Parts 171-180) as they pertain to exceptions for air
bags and seat-belt pretensioners. You ask ifthe exception provided in§ 173.166(d)(1)
applies to shipments described as Class 9, UN 3268 and those described as Class 1.40
UN 0431 air bags and seat-belt pretensioners.
The answ~r to your question is no. The exceptions provided in § 173 .166( d)( 1) are
applicabl~ only to shipments of Class 9 UN 3268 air bag modules or seat-belt
pretensioljlers. The exceptions are provided in § 173.166 which is assigned in the
hazardou~ materials table (HMT) to the proper shipping names Air bag inflators or Air bag
modules ~r Seat-belt pretensioners. No link to § 173.166 for air bag modules or seat-belt
pretensioliers is provided in the exceptions column of the HMT for shipments described as
Aricles, P:yrotechnic UN 0431. As you mentioned in your letter, proposals have been
made addressing this issue in the HM-254 Notice of Proposed Rule Making.
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'
I trust thi~ satisfies your inquiry. Please contact us if we can be of further assistance.
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I
Sin erelyj
i
I •
~~
Delmer Blllings
Senior R~gulatory Advisor
Standard~ and Rulemaking Division

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May 22, 2012
Mr. Charles Betts
Director, Standards & Rulemaking
US Department of Transportation- PHMSA
1200 New Jersey Ave. SE
East Building- 211
d Floor
Washington, DC 20590-0001
Re: Request for Interpretation- 173.166(d)!l)
Hello, Mr. Betts.
It was a pleasure talking with you during the COSTHA conference. As Julie Smith mentioned to you,
the Supplier Regulatory Workgroup of NAAHAC (North American Automotive Hazmat Action
Committee) has a question regarding 173.166(d)(1). Specifically, does 173.166(d)(l) currently apply
to both Class 9 I UN3268 air bags I pretensioners and 1.4G Articles, pyrotechnic I UN0431 air bags I
pretensioners?
This section currently reads as follows:
(d} Exceptions. (1) An air bag module or seat-belt pretensioner that has been approved by the
Associate Administrator and is installed in a motor vehicle, aircraft, boat or other transport
conveyance or its completed components, such as steering columns or door panels, is not subject to
the requirements of this subchapter.
Some of the group interpret that this relief is only offered for the Class 9 I UN3268 devices, but the
recent publication of HM-254 and some of the language in the preamble of HM-254 have caused us to
question this. The proposed language of 173.166(d)(1} in HM-254 very clearly specifies that the relief
is offered to both the Class 9 and the 1.4G devices. "(d) Exceptions. (1) An air bag module or seat-belt
pretensioner that is classed as a Class 9 {UN3268) and is installed in a motor vehicle, aircraft, boat or
other transport conveyance or its completed components, such as steering columns or door panels, is
not subject to the requirements of this subchapter. An air bag module or seat-belt pretensioner that
has been classed as a Division 1.4G and approved by the Associate Administrator and is installed in a
motor vehicle, aircraft, boat or other transport conveyance or its completed components, such as
steering columns or door panels, is not subject to the requirements of this subchapter."
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NAAHAC

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And the preamble states "In this NPRM, PHMSA proposes to clarify that a safety restraint device that is
installed in a vehicle or vehicle component is not subject to the HMR. This change makes it clear that
the exception will continue to apply to Class 9, UN3268 materials that are not approved by the
Associate Administrator." This wording appears to indicate that the current regulation applies to both
Class 9 and lAG. While we realize that the issue will be resolved with the finalization of HM-254 and
its effective date, we would like to better understand the current regulation to ensure compliance
between now and then.
To summarize- our question is ({Does 173.166(d)(l) currently apply to both Class 9/ UN3268 air bags
I pretensioners and 1.4G Articles, pyrotechnic I UN0431 air bags l pretensioners?"
We thank you in advance for your assistance in this matter. If you need additional information
regarding our inquiry, you can contact either me I 801-612-5665} or
Julie Smith I 586-232-7744). We look forward to your response.
Sincerely,
I
Dave Madsen
Chair, Supplier Regulatory Workgroup
NAAHAC
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