Impressed Current Cathodic Protection System

This makes it possible to protect virtually any structure regardless of size or current requirements using long life anodes and enough appropriately sized power supplies.

Impressed current cathodic protection system. For most impressed current cathodic protection systems a rectifier is an integral component in the system design. Impressed current cathodic protection on ships iccp corrosion by sea water is an electrochemical process in which the ship hull acts as electrode and sea water as electrolyte. Current flows from the anode through the. As you know when two metals having different electrode potentials come into contact in an electrolyte then one will become anode and other act as cathode.

The types and sizes of these components and their positions on the hull are specified according to design parameters which allow for the size of the vessel and fluctuations in the protection current likely to be encountered during sea going service. The impressed current cathodic protection system comprises of several anodes reference electrodes and a transformer rectifier controller power unit. The reference cells measure the underwater electrical protection potential and based on this data the power unit regulates the required output to the anodes. Impressed current cathodic protection systems have the benefit of using an external power supply to drive current.

Impressed current cathodic protection systems are the ultimate state of the art long term solution to corrosion problems and are recognized as a superior alternative to sacrificial anode systems which require frequent replacement. Hazardous product pipelines are routinely protected by a coating supplemented with cathodic protection. Impressed current cathodic protection iccp systems consist of one or more reference electrodes and several iccp anodes which are all connected to a power unit. Impressed current cathodic protection systems use the same elements as the galvanic protection system only the structure is protected by applying a current to it from an anode.

The anode and the structure are connected by an insulated wire as for the galvanic system. Rectifiers are available in a wide range of enclosure types depending on the environment and hazardous area classification of the location. Impressed current cathodic protection iccp is a corrosion protection system consisting of sacrificial anodes connected to an external power source. An impressed current cathodic protection system iccp for a pipeline consists of a dc power source often an ac powered transformer rectifier and an anode or array of anodes buried in the ground the anode groundbed.