How long after manufacture can DOT steel or aluminum cylinders be recertified?

The correct interval for recertification of DOT steel or aluminum cylinders is set at 10 years after their manufacture. This timeline applies to both types of cylinders used for transporting compressed gases. The Department of Transportation (DOT) establishes these regulations to ensure safety and proper function during the life of the cylinders.

After this 10-year period, cylinders must undergo an inspection and testing process to confirm their integrity and adherence to safety standards before being put back into service. Understanding the recertification schedule is vital for individuals and organizations involved in the handling and transport of gases, as it helps prevent accidents and ensures compliance with safety regulations.

The choices provided reflect various time intervals, but the key standard enforced by the DOT, which requires the recertification process at the 10-year mark, helps uphold safety and reliability within this industry.