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Cylinder requalification

Viking Cylinders need to be requalified once every five years via a visual inspection. The information below will help ensure that the process goes smoothly and as required by law.

United States

The approval process is slightly different depending on your facility’s status with the DOT. In all cases, however, the inspection procedure is the same.

DOT approval procedure: for facilities with an existing RIN

Complete this application to visually requalify composite cylinders and submit it to the DOT (approvals@dot.gov). You may then proceed with inspecting composite cylinders.

Note: The DOT will contact you only if there is an issue or question regarding your application.

DOT approval procedure: for facilities without a RIN

Complete this application to obtain a RIN and submit it to the DOT (approvals@dot.gov). It will take two to four weeks for your application to be processed and a RIN to be issued. Once you receive your RIN you may begin inspecting composite cylinders.

Inspection procedure

Use the instructions in the inspection document to inspect the cylinder. After inspection, a recertification sticker must be applied to the fiberglass dome, not the plastic casing.

Download an example of a recertification sticker »

The DOT requires that you apply the recertification sticker using epoxy, which is available at any auto parts store. Place the sticker on the fiberglass dome, then coat it with the epoxy.

Note: There is no need to replace the valve or to pressure-test the cylinder. Viking Cylinders products may be requalified via visual inspection.

Canada

Our Transport Canada equivalency permit number is SU5931—you will see that number embossed on the top ring of our cylinders. This permit requires that our cylinders be requalified using section Q of the equivalency permit document. Use these instructions to visually inspect the cylinder and casing for damage.

After inspection, a recertification sticker must be applied to the fiberglass dome, not the plastic casing.  Apply the recertification sticker using epoxy, which is available at any auto parts store. Place the sticker on the fiberglass dome, then coat it with the epoxy.

The recertification sticker must include the month and year of inspection, as well as your facility number and the letter “E” (to indicate a visual inspection). It must also state that the inspection is good for five years.

Download an example of a recertification sticker »

Note: There is no need to replace the valve or to pressure-test the cylinder. Viking Cylinders products may be requalified via visual inspection.

Lite Cylinders recall

The United States DOT recently issued a recall of all composite cylinders made by Lite Cylinders Company. The recall does not impact Viking Cylinders products. This fact sheet will help you learn more.