return to safety tip archive index

March, 2002 - Cylinder Requalification Dates

OSHA requires compressed gas cylinders in the workplace to be maintained in accordance with regulations of the US Department of Transportation (DOT). Among DOT requirements for cylinder maintenance is the requirement for periodic requalification for most cylinders. It should be noted that not every type cylinder must undergo periodic requalification, such as DOT 4L vacuum-insulated cryogenic cylinders.

For cylinders that are hydrostatically, ultrasonically, visually or otherwise requalified, a "test date" is marked on the cylinder, indicating the month and year of requalification, interpreted as the last day of the month indicated. The requalification date is not a "use by" date and DOT clearly states that cylinders whose requalification period has expired need not be removed from the workplace and emptied they simply cannot be refilled until they have been again successfully requalified. Therefore, there is no need to return a cylinder to your vendor simply because it is "out of test."

The requirement to periodically requalify cylinders applies to cylinder owners. Even if you own your cylinder(s), your vendor cannot refill them beyond the expiration of their requalification dates.

Important:

This information is offered by the National Welding Supply Association and your local distributor as general guidance only and may not explain all relevant safety precautions or hazards

Mike Lopez, NWSA Safety
Consultant

Copyright © 2000 Prest-O-Sales & Service, Inc.
Web Design by DPC Tech Computer Services, Inc.