California ICC UST Inspector Practice Exam

After completing repairs, tanks and piping must be tested for tightness within how many days?

1. 7 days

2. 30 days

3. 60 days

4. 90 days

The correct answer is: 30 days

The requirement for testing the tightness of tanks and piping after repairs is critical to ensure the integrity of underground storage systems. According to California regulations, once repairs are completed, the systems must undergo tightness testing within a 30-day timeframe. This period is established to minimize the risk of leaks that could potentially harm the environment and public safety. Tightness testing is vital to confirm that the system is still effective at containing the liquids stored and that no breaches have occurred during the repair process. The 30-day limit serves as a regulatory measure, ensuring that any potential issues are addressed promptly, thereby protecting groundwater and other natural resources. The other timeframes mentioned, such as 7, 60, and 90 days, do not align with established regulations in California. Therefore, choosing a period that exceeds the statutory requirement could delay necessary evaluations and possible corrective actions, thereby increasing risks associated with potential leakage.