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U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Interpretation Response #00-0304 ([United States Enrichment Corporation] [Dr. M. E. Darrough])

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

Interpretation Response Details

Response Publish Date:

Company Name: United States Enrichment Corporation

Individual Name: Dr. M. E. Darrough

Location State: MD Country: US

View the Interpretation Document

Response text:

March 13, 2001


Dr. M. E. Darrough                      Reference No: 00-0304
Director, Transportation Programs
United States Enrichment Corporation
6903 Rockledge Drive
Bethesda, MD 20817-1818

Dear Dr. Darrough:

This is in response to your letter and telephone conversation with Dr. Fred Ferate, Radioactive Materials Branch, Office of Hazardous Materials Technology, concerning the term “return to service” as used in 49 CFR 173.443(c).

As you were informed by Dr. Ferate, as used in § 173,443(c), the term “return to service”  refers to the point at which a trailer or railcar used to transport a Class 7 exclusive use shipment is determined by the offeror to satisfy the prescribed contamination control limits and is released from exclusive use status and placed back in transportation for general use.

I hope this satisfies your request.



Hattie L. Mitchell
Chief, Regulatory Review and Reinvention
Office of Hazardous Materials Standards



Regulation Sections

Section Subject
173.443 Contamination control