What is the function of an anode in cathodic protection systems?

The function of an anode in cathodic protection systems is indeed to prevent corrosion of pipelines. In these systems, the anode operates by undergoing oxidation, which means it sacrifices itself to protect the metal structure, such as a pipeline.

When a direct current is applied, the anode produces electrons that travel through the electrolyte (e.g., soil or water) to the cathode, which is the surface of the pipeline. This process helps to mitigate the electrochemical reactions that typically lead to corrosion. As a result, the anode acts as a barrier, reducing the corrosion rate of the metal it is intended to protect.

The role of the anode is crucial for maintaining the integrity and longevity of pipelines, especially those exposed to corrosive environments. The correct understanding of this function is vital for professionals working with pipelines and infrastructure reliant on cathodic protection.