What are the main components of an underground storage tank system?

The main components of an underground storage tank (UST) system play a crucial role in the safe storage and handling of hazardous liquids, particularly fuels. The correct choice, which includes the tank, piping, leak detection system, and spill prevention equipment, encompasses essential elements necessary for compliance with safety regulations and environmental protection.

The tank serves as the primary containment vessel for the fuel or hazardous substance. Piping connects the tank to dispensing locations, allowing for the transfer of product. The leak detection system is vital for identifying any potential leaks in the tank or piping, which helps prevent environmental contamination and ensures compliance with regulatory requirements. Spill prevention equipment, such as containment sumps or dikes, is designed to manage any spills that may occur during delivery or dispensing, further protecting the surrounding environment.

In contrast, the other options include components that are not standard or essential parts of an underground storage tank system. For example, while emergency shut-off systems and fuel pumps may be involved in UST operations, they do not constitute the main components of the UST system itself. Similarly, components like vapor recovery systems and gauges, while thematically relevant, are more details of specific functionalities rather than core components. Understanding the comprehensive function and importance of these primary components helps ensure that storage