Cathodic Protection

Cathodic protection is a technique used to prevent metal corrosion, particularly in pipelines and structures submerged in water, such as ships and oil rigs. It works by turning the metal into a cathode in an electrochemical cell. This is achieved either through sacrificial anodes—more reactive metals that corrode first—or impressed current systems that supply a direct electric current. By minimizing corrosion, cathodic protection helps extend the lifespan of metal structures, reducing maintenance costs and preventing leaks or failures that can have significant environmental and safety implications.