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Interpretation Response #06-0105 ([Volvo Aero Services (Seattle) LLC] [Mr. Ronnie Hamblin])

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

Interpretation Response Details

Response Publish Date:

Company Name: Volvo Aero Services (Seattle) LLC

Individual Name: Mr. Ronnie Hamblin

Location State: WA Country: US

View the Interpretation Document

Response text:

Jul 3, 2006


Mr. Ronnie Hamblin                 Reference No. 06-0105
Volvo Aero Services (Seattle) LLC
18516 8th Avenue South
Kent, Washington 98032

Dear Mr. Hamblin:

This responds to your letter regarding periodic retest of compressed gas cylinders under the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180).

Specifically, you ask whether a charged compressed gas cylinder (oxygen, etc.,) that is beyond its requalification/retest interval, may be transported via any mode from its place of origin to another facility, to a requalification/retest facility, or be stored indefinitely in a warehouse environment without being requalified/retested.

The answer is yes. A cylinder may be requalified at any time during or before the month and year that the requalification is due. A cylinder filled (i.e., charged) before the requalification becomes due may remain in service until it is emptied, and a commercial enterprise may transport those cylinders in commerce by highway, rail, air, or vessel in compliance with the HMR (see § 180.205).

I hope this information is helpful. If we can be of further assistance, please contact us.


John A. Gale
Chief, Standards Development
Office of Hazardous Materials Standards


Regulation Sections

Section Subject
180.205 General requirements for requalification of specification cylinders