California Designated Operator Practice Exam

What is the required leak detection capability for a non-volumetric test on the tank?

1. 0.01 gph

2. 0.05 gph

3. 0.1 gph

4. 0.15 gph

The correct answer is: 0.1 gph

The required leak detection capability for a non-volumetric test on a tank is set to ensure that any potential leaks are identified with a high degree of precision. The standard threshold of 0.1 gallons per hour (gph) is significant because it represents a balance between practical testing constraints and regulatory requirements. At this threshold, the testing method is sensitive enough to detect small leaks that could lead to environmental contamination or economic loss, while remaining feasible for implementation across a range of scenarios. This capability reflects industry practices designed to protect both the environment and public safety by ensuring that any leaks are caught early before they result in more significant issues. Non-volumetric tests are preferred in many situations due to their effectiveness in detecting leaks without relying on the flow rates associated with volumetric methods. The chosen threshold aligns with regulatory compliance and best practices in the field of leak detection. Hence, 0.1 gph is recognized as the industry standard for ensuring adequate monitoring of tank integrity.