Cathodic
Protection &
Corrosion
Monitoring

Cathodic Protection is a major weapon against corrosion but has some costly disadvantages when trying to protect larger steel assets

 

For corrosion to occur, four elements must be present: a host site from which current flows, a destination site where no current flows, a medium capable of conducting current (such as water, concrete, or soil), and a metal path between the host and destination site.

 

Electrochemical corrosion of metals is the process by which ions on the surface of metal are transferred to another substance (a depolarizer, or less active substance or metal). Such depolarizers are oxygen, acids, or cations of more passive metals.

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There are two basic types of cathodic protection