UST systems with impressed current cathodic protection systems must be inspected at least every how many days?

The requirement for inspecting underground storage tank (UST) systems with impressed current cathodic protection systems at least every 60 days is based on the need to ensure the effective protection of metal components from corrosion. Impressed current cathodic protection systems actively protect the UST and its associated piping from corrosion by applying a direct current, which helps to mitigate electrochemical reactions that cause degradation.

Routine inspections every 60 days help identify any issues with the system, such as a malfunctioning power supply or degraded anodes that could compromise protection levels. These frequent checks are critical for maintaining the integrity of the UST system and preventing potential leaks, which could lead to environmental contamination and regulatory non-compliance.

In contrast, inspection intervals shorter than 60 days may not be necessary under certain operational conditions, while longer intervals could risk unmonitored corrosion and system failure. Therefore, the established requirement emphasizes timely oversight and proactive maintenance for optimal performance and safety.