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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 #02-0141 ([The Chlorine Institute, Inc.] [Gary F. Trojak])

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

Interpretation Response Details

Response Publish Date:

Company Name: The Chlorine Institute, Inc.

Individual Name: Gary F. Trojak

Location State: DC Country: US

View the Interpretation Document

Response text:

JUL 10, 2003

Gary F. Trojak                                                             Ref. No. 02-0141
VP Packaging and Technical Services
The Chlorine Institute, Inc.
2001 L Street, N. W.
Washington, D.C. 20036-4919

Dear Mr. Trojak:

This is in response to your letter and subsequent telephone conversation with Sandra Webb of my staff requesting clarification of the requirements in § 173.34 for marking the tare weight on a cylinder under the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180). I regret the delay in responding to your letter and hope it has not caused you any inconvenience.

The requirement was recently moved in a final role published on August 8,2002 under RSPA Docket HM-220D; 67 FRS1652 to § 173.301(b). Your specific question is paraphrased and answered below.

Q: If the cylinder passes inspection and requalification, can the approved testers mark the new tare weight to the right of the original tare weight on the cylinder?
A: The answer is yes. Additional information may be marked on the cylinder provided it does not
affect the required markings prescribed in § 178.35(f) and the applicable specification as specified in § 173.301(b). However, we recommend that you stamp one diagonal line through the obsoleta, original tare weight(s), If present, so that it is still legible for future reference.

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


Susan Gorsky
Senior Transportation Regulations Specialist
Office of Hazardous Materials Standards

Regulation Sections

Section Subject
173.301 General requirements for shipment of compressed gases and other hazardous materials in cylinders, UN pressure receptacles and spherical pressure vessels
178.35 General requirements for specification cylinders