Systems and methods for underwater impressed current cathodic protection

Abstract

An ICCPS system includes a waterproof transformer or transformer rectifier adapted for underwater placement, an above-water source of AC power, and one or more cables connecting the power source to either a rectifier on the surface and underwater transformer or to a underwater transformer rectifier to deliver high voltage/low amperage DC power or high voltage/low amperage AC power from the source for underwater conversion to low voltage/high amperage DC power for delivery to on underwater anode.

1 . An ICCP system comprises one or more waterproof transformer rectifiers adapted for underwater placement, an above water surface source for AC power, and one or more AC power delivering cables connecting the AC power source to said transformer rectifiers. 
     
     
         2 . An ICCP method comprises delivering high voltage/low amperage AC power from the above water portion of a facility mounted underwater with a portion of the facility above the surface of the water, to a waterproof transformer rectifier grounded underwater to the facility, converting AC power to DC power in the waterproof transformer rectifier, and delivering the DC power to an underwater anode. 
     
     
         3 . An ICCP system comprises one or more waterproof transformers adapted for underwater placement, an above water source for high voltage/low amperage DC power and one or more high voltage/low amperage DC power carrying cables connecting said high voltage/low amperage DC power to said transformers. 
     
     
         4 . An ICCP method comprises delivering high voltage/low amperage DC power from the above water portion of a facility that is mounted underwater with a portion of the facility above the surface of the water, to a waterproof transformer grounded underwater to the facility, converting said high voltage/low amperage DC power to low voltage/high amperage DC power, and delivering the low voltage/high amperage DC power to an underwater anode.