Impressed Current Cathodic Protection System
Impressed current cathodic protection is also called forced current protection. It provides the required protection current through an external power supply. A method in which a metal to be protected is used as a cathode and a specific material is used as an auxiliary anode to protect the metal to be protected. Impressed current cathodic protection is the use of an external power source to change the potential of the surrounding environment.
Impressed current cathodic protection is also known as forced current protection. It provides the required protective current through an additional power supply. The protected metal is protected by the use of a protective metal as cathode and a specific material as auxiliary anodes.
Impressed current cathodic protection used external power unit to keep the potential of the device under the surrounding environment potential and to make the device as a cathode of the whole environment, so that the device cannot be corroded by the loss of electrons.
The system is suitable for marine vessels, ocean platforms, seawater pipelines, marine wind power piles, coastal power plants, bridges, wharves and other fields of engineering.
The ICCP system produced by the company is composed of the constant potentiometer the auxiliary anode, the reference electrode and the anode shield:
Constant Potential Control Panel
The main function of the constant potential control panel is to output the automatically adjusted protection current to the hull through the auxiliary anode and the seawater medium so that the underwater part of the hull is protected.
The auxiliary anode installed on the shell plating of the hull is made of titanium oxide material, which is connected to the Constant potential control panel. The anode is to transport the protective current to the hull through the seawater medium.
The reference electrode is used to continuously measure the potential of the hull relative to the sea water.The system can adjust the output current automatically through the hull potential which the reference electrode measured.
In order for the current drawn by the auxiliary anode not to short circuit near the anode and to reach the furthest hull, the anode shield must be brushed over a range of areas.