# Silberline Manufacturing Co., Inc. — Hazardous Materials Safety Interpretation

- **operation:** document
- **citation:** 12-0082
- **title:** Silberline Manufacturing Co., Inc. — Hazardous Materials Safety Interpretation
- **source type:** guidance
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** guidance
- **official:** true
- **published on:** 2012-06-21
- **effective on:** Not available
- **summary:** 12-0082 response to Silberline Manufacturing Co., Inc. concerning 171.2, 171.7.
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/phmsa-interpretation-12-0082.json
- **markdown:** https://regulus.evalyn.ai/document/phmsa-interpretation-12-0082.md
- **app url:** https://regulus.evalyn.ai/document/phmsa-interpretation-12-0082
- **source url:** https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretations/2012/120082.pdf
**body:**

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U.S. Department
of Transportation
?ipeline and Hazardous
',1aterials Safety
\dministration
· :~00 New Jersey Avenue, :3E
Nashington, D.C. 20590
JUN 2 1 2012
Mr. Tom Shober
Health, Safety and Environmental Manager
Silberline Manufacturing Co., Inc.
130 Lincoln Drive
Tamaqua, PA 18252
Reference No. 12-0082
Dear Mr. Shober:
This is in response to your e-mail requesting clarification of the Hazardous Materials
Regulations (HMR; 49 CFR 171-180) applicable to tests methods found in the United
Nations (UN) Manual of Tests and Criteria for materials that are potentially readily-
combustible liquids. Your questions are paraphrased and answered below.
Ql. Does the HMR allow a material to be "overclassified"? Specifically, if the results of
Test N.l: "Test method for readily combustible solids," found in the UN Manual of
Tests and Criteria, show a material to be non-regulated, is it acceptable to ship it as a
Class 4.1 dangerous good regardless? If not, what is the penalty for misclassification
of the material on a per day basis?
Al. In accordance with § 171.2( e), no person may offer or accept for transportation in
commerce a hazardous material that is not properly classified. A material that does
not meet the criteria for a Division 4.1 hazardous material may not be represented as
such.
Each person who performs the functions of an offeror (shipper), such as classification
or preparing a hazardous material shipment for transportation in commerce, is
responsible for performing those functions in accordance with the HMR. The shipper
is potentially subject to either the civil or criminal penalty provisions that may result
from non-compliance with the HMR. Determinations of civil or criminal penalties are
handled on a case-by-case basis.
Q2. Has the test methodology specified in Test N.l changed at all since its introduction
into the HMR (via HM-181 (Appendix E to Part 173 of the Federal Register of
12/21/90 (55FR-52402))?
A2. Other than very minor editorial changes made over time, it has not. For your
information, Appendix E to Part 173 was removed and reserved in a final rule [HM-
2158; 62 FR 24690], published in the Federal Register on May 6, 1997. This final

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rule required the classification of readily-combustible solids to be made in accordance
with Test N.l of Section 33 of the UN Manual of Tests and Criteria and was
incorporated by reference in § 171.7 of the HMR.
Q3. Is third party testing for status of a material for Division 4.1 materials required to
properly classify the material, or is self-determination via the administration of the test
in-house sufficient for proper classification?
A3. No, third-party (independent) testing of a readily-combustible solid is not required by
the HMR or the UN Model Regulations. Please note that 33.2.1.2.1 of the UN Manual
of Tests and Criteria requires testing of substances unless it is impracticable (e.g.,
physical form) to perform the tests. Under such circumstances, substances or articles
should be classified by analogy with existing entries prior to being offered for
transportation.
I hope this information is helpful. Please contact this office should you have additional
questions.
Sincerely,
T. Glenn Foster
Chief, Regulatory Review and Reinvention Branch
Standards and Rulemaking Division

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Drakeford, Carolyn (PHMSA)
From: INFOCNTR (PHMSA)
Sent:
To:
Subject: Friday, March 02, 2012 12:07 PM
Drakeford, Carolyn (PHMSA)
FW: Request for a formal letter of interpretation
Hi Carolyn,
We received the following request for a letter of interpretation.
Thanks,
Victoria
Victoria Lehman
Hazmat Information Center (HMIC)
http://phmsa.dot.gov/hazmat/info-center
(2e2) 366-1e35
From: Shober, Tom [mailto:Shobert@silberline.com]
Sent: Friday, March 02, 2012 11:40 AM
To: INFOCNTR (PHMSA)
Subject: Request for a formal letter of interpretation
I'm interested in receiving a formal letter of interpretation for the following questions related to the classification of
materials which are potentially readily combustible solids:
• Is it legal to "overclassify" a material for transport? Specifically, if the results of Test N.1: "Test method for
readily combustible solids", found in the UN Manual of Tests and Criteria, show the material to be non-
regulated, is it acceptable to ship it as a Class 4.1 dangerous good? If not, what is the penalty for
misclassification of the material on a per day basis?
• Has the test methodology specified in Test N. changed at all since its introduction into the USDOT regulations in
the original requirements of HM181 (Appendix E to Part 173 ofthe Federal Register of 12/21/90 (55FR-52402))?
• Is third party testing for status of a material with respect to Class 4.1 required to properly classify the material,
or is self-determination via the administration of the test in-house sufficient for properly classifying it?
Thanks for your help in this matter.
Respectfully,
7'om Sfio6er
Health, Safety and Environmental Manager
Silberline Manufacturing Co., Inc.
130 Lincoln Drive
Tamaqua, P A 18252
570-668-8381
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contain information that is privileged, confidential, or protected by law. If you are
not the intended recipient you are hereby notified that any dissemination, copying or
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distribution of this e-mail or its contents is strictly prohibited. If you have received
this message in error, please notify me immediately by replying to the message and
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This e-mail is intended only for the use of the party to which it is addressed and may
contain information that is privileged, confidential, or protected by law. If you are
not the intended recipient you are hereby notified that any dissemination, copying or
distribution of this e-mail or its contents is strictly prohibited. If you have received
this message in error, please notify me immediately by replying to the message and
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