Preventing the flow of cathodic protection (CP)A technique used to protect pipelines from corrosion. It involves applying an electric current to the metal surface to counteract the corrosive reactions and p… current from reaching the external pipe surface in a location where the coatingLiquid, liquefiable, or mastic composition that, after application to a surface, is converted into a protective adherent film. The coating serves as a barrier b… is disbonded.