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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 #13-0063 ([Mr. Andrew Walleck])

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

Interpretation Response Details

Response Publish Date:

Company Name:

Individual Name: Mr. Andrew Walleck

Country: US

View the Interpretation Document

Response text:

June 28, 2013

 

Mr. Andrew Walleck

 

Ref. No. 13-0063

Dear Mr. Walleck:

This responds to your March 25, 2013 email requesting clarification on the limited quantity exceptions for air transport under the Hazardous Materials Regulations, (HMR; 49 CFR Parts 171-180).  Specifically, you request clarification on quantity limitations specified in Table 3 of § 173.27(f)(3).

Unless otherwise specified in the HMR, when a limited quantity of hazardous material packaged in a combination packaging is intended for transportation aboard an aircraft, the inner and outer packagings must conform to the quantity limitations set forth in Table 3 of      § 173.27(f)(3). Column five of the table lists authorized materials that are not specifically mentioned in the first four columns, including UN3334. You request clarification on the quantity limitations for UN 3334.  Your questions are paraphrased and answered as follows:

Q1.  Does the maximum authorized net quantity of each outer package up to 30 kg gross weight for “all other authorized Class 9 material” specified in column four of Table 3 in § 173.27(f)(3) include UN 3334?

A1.  Yes.  The 30 kg gross weight for “all other authorized Class 9 material” does include UN3334.  

Q2.  Are there any inner packaging limits for UN3334 that a shipper should be aware of?

A2.   Yes. The maximum authorized net quantity of each inner packaging for UN3334 is 5.0 L for liquids.  Although, this is not indicated in Table 3 in § 173.27(f)(3), the intention was to include UN3334.  This will be addressed in a future rulemaking.  

I hope this answers your inquiry.  If you need additional assistance, please contact this office at 202-366-8553.

Sincerely,

Robert Benedict
Chief, Standards Development Branch
Standards and Rulemaking Division

173.27(f)(3)

Regulation Sections