What should be monitored to prevent UST failures?

Monitoring the leakage and structural integrity of underground storage tanks (USTs) is essential for preventing failures because these factors directly impact the safety and environmental compliance of UST systems. Leakage can lead to soil and groundwater contamination, posing serious risks to human health and the environment. Therefore, regular checks for leaks are crucial in identifying potential failures before they escalate into significant problems.

Additionally, assessing the structural integrity of the tanks helps ensure that they can withstand operational stresses and external pressures. This may involve inspecting for corrosion, cracks, or other signs of deterioration that could compromise the tank's function. Comprehensive monitoring in these areas not only aids in compliance with regulatory requirements but also supports proactive maintenance efforts to extend the life of the UST system and mitigate potential environmental impacts.

In contrast, focusing only on the external appearance, environmental factors, or usage rates does not provide a complete picture of the UST’s condition or its safety. These aspects are relevant but do not address the critical internal conditions that can lead to failures and environmental hazards.