During what process is monitoring for gauge failure particularly important?

Monitoring for gauge failure is particularly important during interstitial pressure testing. This testing process involves checking the space between the outer wall of a tank and its inner wall, which is crucial for identifying any potential leaks. If a gauge fails during this process, it could result in undetected leaks that may lead to environmental contamination or safety hazards.

While gauge failure is also a concern during other operations, the stakes are particularly high during interstitial pressure testing because it is directly linked to the integrity of the UST system. Accurate pressure readings are essential to ensure that the tank's structure is sound and that there are no breaches. Without reliable data from the gauges during this testing, the potential for undetected leaks increases significantly, which can have serious consequences for both safety and compliance with regulatory standards.