USA Banner

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

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

Interpretation Response #11-0041 ([TEN-E Packaging Services, Inc.] [Mr. Robert J. Ten Eyck])

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

Interpretation Response Details

Response Publish Date:

Company Name: TEN-E Packaging Services, Inc.

Individual Name: Mr. Robert J. Ten Eyck

Location State: MN Country: US

View the Interpretation Document

Response text:

March 1, 2011




Mr. Robert J. Ten Eyck

Director, Technical Services

TEN-E Packaging Services, Inc.

1666 County Road 74

Newport, MN 55055

Ref. No. 11-0041

Dear Mr. Ten Eyck:

This responds to your February 16, 2011 letter regarding the proper marking of an approved packaging design having different specifications than those prescribed in the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180). Specifically, you ask whether the letter "W" should immediately follow the packaging identification code "1G" marked on a fiber drum packaging approved under the provisions in § 178.601(h). You state the approval was issued because the fiber drum design did not meet the construction standards prescribed in § 178.508 and did not specifically direct the packaging manufacturer to apply the "W" mark as part of the UN marking.

The answer is yes. A packaging having specifications different from those prescribed in

§§ 178.504-178.523 may be used if approved by the Associate Administrator. Such packagings must be shown to be equally effective as those prescribed. See § 178.601(h). Furthermore, as specified in § 178.503(a)(2), the letter "W" must follow the packaging identification code on such packagings when required by an approval under the provisions of § 178.601(h). Although your client"s approval does not specifically mandate the "W" mark be applied, nothing in the HMR prohibits indicating it in the appropriate position as part of its UN marking.

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


T. Glenn Foster

Chief, Regulatory Review and Reinvention Branch

Standards and Rulemaking Division


Regulation Sections

Section Subject
178.503 Marking of packagings
178.508 Standards for fiber drums
178.523 Standards for composite packagings with inner glass, porcelain, or stoneware receptacles
178.601 General requirements