During a cathodic protection inspection, which component is primarily checked for functionality?

During a cathodic protection inspection, the rectifier is primarily checked for functionality as it plays a crucial role in the system’s operation. The rectifier converts alternating current (AC) from the power supply into direct current (DC) needed to effectively protect the metal structures from corrosion.

In cathodic protection systems, ensuring that the rectifier is functioning correctly is vital because if it fails, the cathodic protection system may not maintain the required voltage levels, leaving the metal susceptible to corrosion. Regular checks on the rectifier include verifying output voltage and current levels, examining for any signs of damage or overheating, and confirming that it is operating within the manufacturer’s specifications.

Other components, such as anodes, sensors, and monitors, also have important roles in cathodic protection systems but checking their functionality comes secondary to the rectifier during an inspection. Anodes are assessed for consumption and effectiveness, sensors monitor the current and voltage levels, and monitors track the overall health of the system. However, if the rectifier is not operational, these components cannot function properly, underscoring the critical importance of the rectifier in the system's effectiveness.