reduced from 60 to 80 percent. On large tanks without coating, larger si
and more expensive anodes, wire, and rectifier units must be used. In
addition, the power consumed by the uncoated tank is far greater. These
additional costs usually exceed the cost of a quality coating system over
10-year period. Corrosion above the water line of a water storage tank i
usually severe because of the corrosive nature of condensation. For this
reason, protective coatings must be used above the water line on both lar
and small water storage tanks to mitigate corrosion.