What is the positive side of the cathodic protection system called?

In a cathodic protection system, the term "cathode" refers to the electrode where the reduction reaction occurs, and it is positively charged in terms of its role in preventing corrosion. The cathodic protection system typically consists of two types of electrodes: the anode, which is the sacrificial component that oxidizes and corrodes instead of the protected metal structure, and the cathode, which is the structure being protected.

When a metal structure, such as a pipeline or storage tank, is connected to a cathodic protection system, the current flows from the anode to the cathode. This flow of electrons provides the cathode with a negative charge, creating a protective layer that helps to reduce corrosion by reversing the electrochemical reactions that cause it. Hence, in terms of nomenclature, the "positive side," which allows for this protective process, is associated with the cathode. Understanding this concept is crucial for those involved in water operations and maintenance, as proper cathodic protection can significantly extend the life and integrity of water infrastructure.