How many recertifications are allowed for a DOT (ICC) Steel or Aluminum cylinder if it passes inspection?

A DOT (Department of Transportation) steel or aluminum cylinder, once it passes inspection, is allowed unlimited recertifications. This means that as long as the cylinder continues to meet the safety standards and inspection requirements, it can be recertified indefinitely. This recertification process ensures that the cylinder remains safe for continued use, as rigorous inspections are performed to assess its integrity and functionality regularly.

The concept of unlimited recertifications reflects the durable nature of these cylinders when maintained correctly. This aspect is crucial for professionals handling LP gas, as it allows for long-term usage and compliance with safety regulations, which is vital in preventing accidents associated with gas storage and handling.

In contrast, the other options suggest limitations on the number of recertifications, which do not align with the regulations governing the inspection process for these cylinders.