Changes to Propane Requalification Timeframes

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"The rule reduces the initial requalification period for DOT cylinders from 12 years to 10 years from the date of manufacture. It reduces the period from 12 years to 10 years for cylinders requalified using volumetric expansion testing. However, the requalification period for DOT cylinders following a proof pressure test increases from seven years to 10 years. The five-year visual inspection method for cylinder requalification does not change.

NPGA estimates the new rule will affect at least 5 million DOT-specification cylinders, including many that are used for home heating, forklifts and grill cylinders. Additionally, NPGA adds that the rule will likely affect about 3,000 propane marketers."

DOT cylinder requalification rule to impact propane marketers : LP Gas