California Designated Operator Practice Exam

How can product piping be tested if it does not have a line leak detector?

1. By visual inspection

2. Using an annual tightness test

3. By replacing the piping

4. By conducting a groundwater monitor

The correct answer is: Using an annual tightness test

The use of an annual tightness test is an effective method for checking the integrity of product piping that lacks a line leak detector. This testing involves methods that can assess whether any leaks are present in the system without relying on visual inspection or implement the need for invasive monitoring techniques like groundwater monitoring. In an annual tightness test, the system is pressurized, and the rate of pressure change is measured over a specified period. If a leak exists, the pressure will drop outside the acceptable range, indicating that product could be escaping from the piping system. This process is standardized and provides a quantifiable measure of leak detection, ensuring compliance with safety and environmental regulations governing the operation of fuel storage systems. Visual inspection might reveal obvious signs of damage or leaks, but it lacks the thoroughness and reliability necessary for regulatory compliance and cannot detect small, hidden leaks. Replacing the piping could be unnecessary and cost-prohibitive if the leakage issues can be resolved through testing. Conducting groundwater monitoring may help detect leaks after they have occurred but is not a proactive approach to testing the integrity of the piping itself.