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Interpretation Response #10-0063 ([Colorado Department of Public Health and Environment, Radioactive Materials Unit] [Mr. Ed Stroud])

Below is the interpretation response detail and a list of regulations sections applicable to this response.

Interpretation Response Details

Response Publish Date:

Company Name: Colorado Department of Public Health and Environment, Radioactive Materials Unit

Individual Name: Mr. Ed Stroud

Location State: CO Country: US

View the Interpretation Document

Response text:

June 29, 2010




Mr. Ed Stroud, Health Physicist

Compliance Lead

Radioactive Materials Unit

Colorado Department of Public

Health and Environment

4300 Cherry Creek Drive South

Denver, Colorado 80246-1530

Ref. No. 10-0063

Dear Mr. Stroud:

This responds to your letter requesting validation of a clarification issued by this office on May 17, 2002 (Reference Number 02-0106), regarding the definition of an overpack under the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180). Specifically, you ask whether an overpack as currently defined under the HMR is an enclosure used by a single consignor to provide protection or convenience in the handling of a package or to consolidate two or more packages. Additionally, you ask for confirmation that the overpack definition does not include transport vehicles.

The answer to both of your questions is yes. An overpack is one or more packages placed in a protective outer packaging such as a box or crate. An overpack must meet the definition in

§ 171.8 and does not include a transport vehicle, also defined in § 171.8 of the HMR. Thus, our previous clarification on this matter remains valid.

I trust this satisfies your inquiry. Please contact us if we can be of further assistance.


Hattie L. Mitchell

Chief, Regulatory Review and Reinvention

Office of Hazardous Materials Standards


Regulation Sections

Section Subject
171.8 Definitions and abbreviations