From: Beltis.K**At_Symbol_Here**TIAXLLC.COM
Subject: Re: [DCHAS-L] Hydrostatic Test Date
Date: Wed, 5 Feb 2014 19:49:10 -0500
Reply-To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Message-ID: OF761DADF3.A97C6328-ON85257C77.0003527D-85257C77.00047FE8**At_Symbol_Here**
In-Reply-To <9C666C16-3D61-44C5-8997-F26CAD80C11D**At_Symbol_Here**>

49 CFR 180.205 (c) does specifically state that "...a cylinder filled before the requalification becomes due may remain in service until it is emptied."

180.205 General requirements for requalification of specification cylinders.
Periodic requalification of cylinders.
Each cylinder bearing a DOT specification marking must be requalified and marked as specified in the Requalification Table in this subpart. Each cylinder bearing a DOT special permit
number must be requalified and marked in conformance with this section and the terms of the applicable special permit. No cylinder may be filled with a hazardous material and offered
for transportation in commerce unless that cylinder has been successfully requalified and marked in accordance with this subpart. A cylinder may be requalified at any time during or
before the month and year that the requalification is due. However, a cylinder filled before the requalification becomes due may remain in service until it is emptied. [emphasis added] A cylinder with a
specified service life may not be refilled and offered for transportation after its authorized service life has expired.                      


Kevin J. Beltis
Director of Health, Safety and Environment

Office: 781.879.1222
FAX: 781.879.1202
Mobile: 508.934.9382
35 Hartwell Avenue
Lexington, MA 02421-3102

TIAX, "Powered by Innovation"


TIAX, LLC is a privately held company at the intersection of business and technology. TIAX builds on a rich heritage based on creating business opportunities and growth through the power of science, technology, and innovation.

From:        "Carlos Rentas Jr." <crentas1**At_Symbol_Here**NYC.RR.COM>
To:        DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU
Date:        02/05/2014 05:30 PM
Subject:        Re: [DCHAS-L] Hydrostatic Test Date
Sent by:        DCHAS-L Discussion List <dchas-l**At_Symbol_Here**MED.CORNELL.EDU>

In my experience, when I encountered a cylinder that upon inspection had an expired hydrostatic date, we would remove the cylinder from service, and return it to be retested and qualified. This is a legal requirement as well as a best practice. (See 49 CFR 180.209 - REQUIREMENTS FOR REQUALIFICATION OF SPECIFICATION CYLINDERS).

Carlos Rentas Jr., DPH CSP CHMM

Certified Safety, Health & Environmental Consultant
(888) 315-2498
Via iPhone 4S

On Feb 5, 2014, at 3:30 PM,
JAKSAFETY**At_Symbol_Here**AOL.COM wrote:

I would be prudent to not use a compressed gas cylinder after its hydrostatic test date has expired.
Jim Kaufman
Laboratory Safety Institute
In a message dated 2/5/2014 12:00:35 A.M. Eastern Standard Time, LISTSERV**At_Symbol_Here** writes:
Date:    Wed, 5 Feb 2014 01:54:50 +0000
From:    Benjamin G Owens <
Subject: Gas Cylinder Hydrostatic Testing


I understand that compressed gas cylinders must have a current hydrostatic test to be filled.  I have read a vendor site that indicates that a cylinder may be transported after the hydrostatic test expiration date if it was filled prior to the expiration date.  If cylinders that have exceeded the hydrostatic test date are considered safe to transport are they considered safe to continue using?  In other words, if a compressed gas cylinder is not empty but has exceeded the hydrostatic test expiration date is it required by regulation or prudent practice to be returned for testing or can it continue to be used?


Ben Owens
Assistant Director, Laboratory Safety
University of Nevada, Reno
EH&S Dept., MS 328
Reno, NV 89557
775-327-5196 (office)
775-843-2113 (cell)

Previous post   |  Top of Page   |   Next post

The content of this page reflects the personal opinion(s) of the author(s) only, not the American Chemical Society, ILPI, Safety Emporium, or any other party. Use of any information on this page is at the reader's own risk. Unauthorized reproduction of these materials is prohibited. Send questions/comments about the archive to
The maintenance and hosting of the DCHAS-L archive is provided through the generous support of Safety Emporium.