# Mr. Lawrence W. Bierlein — Hazardous Materials Safety Interpretation

- **operation:** document
- **citation:** 11-0276
- **title:** Mr. Lawrence W. Bierlein — Hazardous Materials Safety Interpretation
- **source type:** guidance
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** guidance
- **official:** true
- **published on:** 2012-03-21
- **effective on:** Not available
- **summary:** 11-0276 concerning 173.56, 173.61.
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- **markdown:** https://regulus.evalyn.ai/document/phmsa-interpretation-11-0276.md
- **app url:** https://regulus.evalyn.ai/document/phmsa-interpretation-11-0276
- **source url:** https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretations/2011/110276.pdf
**body:**

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U.S. Department 1200 New Jersey Avenue, SE
of Transportation Washington, D.C. 20590
Pipeline and Hazardous
Materials Safety
Administration
MAR 2 1 2012
Mr. Lawrence W. Bierlein
1101 30th Street, NW
Suite 500
Washington, DC 20007
Reference No.: 11-0276
Dear Mr. Beirlein:
This responds to your letter requesting clarification of Hazardous Materials Regulations
(HMR; 49 CFR Parts 171-180) applicable to the shipment of lAS explosive devices. In
your letter, you describe a company that holds several lAS explosive device classifications
issued as approvals in accordance with § 173.56. Some of these approvals refer to the
required packaging by Packing Instruction numbers specified in § 173.62, such as PI 142,
while others specify the packaging directly on the face of the approvaL You note that
§ l73.6l(e)(3) allows various lAS classification approvals (other than compatibility groups
A or L), with proper inner and (if required) intermediate packaging to be shipped in the
same required outer packaging, without having to test and seek separate classification
approval for each mixed packaging. You ask if several of these different lAS devices (not
in compatibility groups A or L) may be shipped in the same outer packaging, under the
provisions of § 173.6l(e)(3)?
The answer is yes. Section 173.61(e)(3) allows for lAS explosives to be packaged together
with explosives of any other compatibility group except A or L, and the combined package
may be treated as belonging to any of the package compatibility groups except S. However,
the shipper must ensure that the approved explosives are shipped in accordance with the
prescribed combination packing instructions as required by each explosives approval. This
includes adhering to any specific packing instructions such as ensuring that explosives
packagings requiring orientation arrows are packaged as prescribed. Further, it is the
opinion of this Office that § l73.61(e)(3) indicates an outer packaging is an overpack or
outer packaging that contains the approved combination packaging which follows its
individual specific packing instruction for each approved explosive.
I hope this satisfies your inquiry. Please contact us if we can be of further assistance.
Sincerely,
-7~~~
T. Glenn Foster
Chief, Regulatory Review and Reinvention Branch
Standards and Rulemaking Division

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W. BIERLEIN 1
November 7, 2011
Mr. Charles Betts
Standards Division Director (PHH-IO)
Pipeline & Hazardous Materials Safety Administration
U.S. Department of Transportation
Washington, DC 20590
Re: Interpretation of Sec. 173.61
Dear Mr. Betts:
An issue has arisen as a result ofphone calls through the PHMSA hotline and related telephone
conversations with staff, but not with anyone in Standards. Nothing has been sent to the company in writing by
the agency, although requested, yet the company receiving this oral advice is reluctant to move forward based
upon what they were told.
Specifically, the company holds several l.4S explosive device classifications. These are issued under
Sec. 173.56 in the form ofApprovals identifying the application, prescribing the proper shipping name, UN
number, classification code, EX number, and product designation. Some ofthese Approvals refer to required
packaging by Packing Instruction number in Sec. 173.62, such as PI 142, while others specify the packaging
directly on the face of the Approval.
The question is whether several ofthese different l.4S devices may be shipped in the same outer
packaging, under the provisions of Sec. 173.61 (e )(3). These devices all are classified l.4S and none are in
compatibility groups A or L.
The mixed packaging that is used conforms to the requirements set forth in the PI or on the Approval
itself, i.e., the inner packaging is as prescribed, the proper intermediate packaging ifrequired is used, and the
outer packaging is a UN 4G fiberboard box.
This paragraph ofthe regulations was adopted on June 21, 2001, with the statement in the rulemaking
preamble that, "Based on our own initiative, for Class 1 (explosives) mixed packaging requirements, we are
revising paragraph (e)(3) to allow explosives ofcompatibility group S that are allowed to be packaged with
explosives of all other compatibility groups, except A and L, to be treated as belonging to any ofthe packaged
compatibility groups except S." 66 Fed. Reg. 33326. We know ofno subsequent change to this regulation.
1101 30th Street, NW Suite 500 tel 202-621>8355 www.hazmat·laWyer.com
Washington, DC 20001 mobile 202-631·3222 larfy@hazmat~awyef,com

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The hotline declared that placement of any lAS device in the same packaging with a different
lAS device thereby constituted a new device, requiring fire testing, etc., ofthat particular mixed
packaging. Having multiple products shipped in various numbers per carton based upon customer
requests, such an interpretation would impose a massive financial burden on the company. The burden
would entail the cost oftesting and awaiting Approvals based on the results of each variation ofmixed
packaging, or shipping each device separately in its own pacKaging. In effect, this oral advice nullifies
Sec. 173.61(e)(3).
Please confirm that Sec. 173.6l(e)(3) remains valid, and allows various lAS classification
Approvals (other than compatibility groups A or L), with proper inner and (if required) intermediate
packaging to be shipped in the same required outer packaging, without having to test and to seek a
separate classification Approval of each mixed packaging.
Please contact me ifyou have any questions on this request for an interpretation of Sec. 173.61.
Thank you.
Sincerely,
Lawrence W. Bierlein
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