Tank sacrificial anode plans

api tank; sacrificial anodes plan. The interior surface of a vessel containing fresh water or formation water is susceptible to corrosion attack. the use of coatings is the first measure to adopt to combat corrosion; Since the coatings are not perfect, cathodic protection must be used as a complement. all coatings can deteriorate over time; therefore their use is not sufficient to ensure proper corrosion control. cathodic protection is effective in controlling corrosion only on surfaces wetted by the electrolyte.