The duration of a tightness test is defined by which factor?

The duration of a tightness test is defined by which factor?

• A. The duration is fixed by the operator’s local policy.
• B. The duration is defined by the standard in use.
• C. It must always be 60 minutes.
• D. It depends on the color of the tank paint.

Answer: (B)

The duration of a tightness test is defined by the standard in use. Standards specify how long you must carry out the test to reliably detect leaks at the required acceptance criteria, taking into account the testing method, the allowable leak rate, the vessel’s volume, and the test pressure. An operator’s local policy may guide how the test is performed day-to-day, but it cannot override the standard; if a policy conflicts with the standard, the standard governs. The color of the tank paint has no relevance to how long the test should run, and there isn’t a universal 60-minute rule applicable to all situations.

The duration of a tightness test is defined by the standard in use. Standards specify how long you must carry out the test to reliably detect leaks at the required acceptance criteria, taking into account the testing method, the allowable leak rate, the vessel’s volume, and the test pressure. An operator’s local policy may guide how the test is performed day-to-day, but it cannot override the standard; if a policy conflicts with the standard, the standard governs. The color of the tank paint has no relevance to how long the test should run, and there isn’t a universal 60-minute rule applicable to all situations.