California ICC UST Service Technician Practice Exam

Which of the following is not an approved method of release detection for single wall tanks?

1. Interstitial monitoring

2. Manual inventory control

3. Automated tank gauging

4. Calculated inventory control

The correct answer is: Interstitial monitoring

The correct identification of an approved method of release detection for single wall tanks is based on the regulations and best practices established by environmental agencies. Interstitial monitoring involves monitoring the space between the inner tank and an outer barrier, which is specifically designed for double-walled tanks to provide an extra layer of leak detection. This method is not applicable to single wall tanks, where there is no interstitial space available for monitoring. In contrast, manual inventory control, automated tank gauging, and calculated inventory control are acceptable methods for release detection in single wall tanks. Manual inventory control involves regular checks on the amount of product in the tank and compares it to what has been dispensed, helping to identify potential leaks through discrepancies. Automated tank gauging uses equipment to continuously monitor the tank levels and can detect sudden drops indicative of a leak. Calculated inventory control is similar to manual control but often involves more sophisticated calculations and monitoring techniques to analyze fluctuations in product levels. Overall, understanding the appropriate detection methods for different types of tanks is crucial for compliance with safety regulations and environmental protection standards.