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Interpretation Response #09-0152

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

Interpretation Response Details

Response Publish Date: 10-02-2009
Company Name: Fort Wainwright Ammunition Supply Point    Individual Name: Mr. William H. Orth III
Location state: AK    Country: US

View the Interpretation Document

Response text:

October 2, 2009





Mr. William H. Orth III, WL-06
Ammunition Inspector
Fort Wainwright Ammunition Supply Point
1060 Gaffney Road #7000
Fort Wainwright, AK 99703-7000

Ref. No.: 09-0152

Dear Mr. Orth:

This responds to your July 2, 2009 email requesting clarification of requirements for transporting explosives under the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180). Specifically, you ask if you may use fire-retardant tarpaulins to protect explosives transported on a motor vehicle as required by § 177.835(h).

Section 177.835(h) requires explosives to be protected from moisture and sparks and permits the use of fire- and water-resistant tarpaulin. The HMR do not define the terms "fire"resistant" or "fire-retardant." For purposes of compliance with § 177.835(h), any tarpaulin that is manufactured using material that will protect an explosives shipment from moisture or sparks is acceptable. Note that for purposes of this section, the terms "fire-resistant" and "fire-retardant" are synonymous.

I hope this satisfies your inquiry. If we can be of further assistance, please contact us.


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


Regulation Sections

Section Subject
§ 177.835 Class 1 materials