California ICC UST Inspector Practice Exam

How often is a tank integrity test required when statistical inventory reconciliation is used?

1. Every year

2. Every 2 years

3. Every 3 years

4. Never

The correct answer is: Every 2 years

When statistical inventory reconciliation (SIR) is utilized, regulatory standards mandate that a tank integrity test be conducted every two years. This requirement is in place to ensure that the integrity of underground storage tanks is monitored regularly, mitigating the risk of leaks that could lead to environmental contamination and regulatory violations. SIR provides a method for detecting potential leaks by analyzing inventory data, but it is not a standalone solution for confirming the physical condition of the tank. Conducting integrity tests at the specified interval helps ensure that any potential issues are identified and addressed promptly, thereby maintaining compliance with safety regulations and protecting the environment. The other time frames suggested would not comply with the regulatory requirements concerning the combination of SIR and physical tank integrity testing, as less frequent testing could increase the risk of undetected leaks.