Which is an essential aspect of monitoring a cathodic protection system?

Measuring voltage and current is an essential aspect of monitoring a cathodic protection system because it directly assesses the effectiveness of the corrosion protection being provided to underground storage tanks. Cathodic protection works by using electrical current to counteract the electrochemical reactions that lead to corrosion on the metal surfaces of tanks, pipelines, or other structures.

By measuring the voltage and current, you can determine whether the cathodic protection system is functioning properly and effectively protecting against corrosion. Regular monitoring ensures that the system is providing adequate protection and allows for timely adjustments or maintenance if necessary.

While aspects such as annual soil testing, visual inspection of tanks, and testing for fuel leaks are important for a comprehensive maintenance program, they do not directly evaluate the performance of the cathodic protection system in the same way that measuring voltage and current does. This targeted monitoring is crucial for ensuring long-term integrity and safety of storage systems.