The ICCP systems ( Impressed Current Cathodic Protection ) are active cathodic protection methods used to protect metal structures from corrosion.
An impressed current system typically consists of the following elements:
The detection probes monitor the electrochemical potentials in the hull and the measurements obtained are then used by the control unit to determine the current required for effective protection.
To provide this current, the electrodes are connected to a DC power source.
In this way, ICCP systems utilise the current impressed on a titanium electrode coated with a noble material to abate corrosion of metal structures immersed in an electrolyte, thus contributing to their durability and integrity over time.