What must be checked regarding gauges before use?

Ensuring the operation and accuracy of gauges before usage is critical for monitoring the levels of liquid within an Underground Storage Tank (UST). Gauges provide essential data about the liquid levels, which is crucial in preventing overfilling, ensuring compliance with safety regulations, and maintaining operational efficiency.

If the gauges are not operating correctly or are inaccurate, they can lead to improper monitoring, which may result in leaks, environmental contamination, or safety hazards. Therefore, a thorough check should be conducted to ascertain that the gauges provide reliable readings and function as intended, supporting safe and compliant operation of the UST system.