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. The reference cells measure the underwater electrical protection potential and based on this data, the power unit regulates the required output to the anodes
ICCP Immersed Current Cathodic Protection
- Anode System: ICCP systems use sacrificial anodes or impressed current anodes to provide the necessary electrical current for cathodic protection. Sacrificial anodes are made of a metal with a higher electrochemical potential than the structure being protected (often zinc or aluminum), while impressed current anodes are typically made of inert materials such as mixed metal oxide (MMO) coated titanium.
- Power Supply: For impressed current systems, a power supply unit is required to provide the electrical current to the anodes. This power supply can be AC or DC, depending on the specific requirements of the application.
- Reference Electrode: A reference electrode is used to measure the potential of the structure being protected relative to a stable reference point. This information is used to ensure that the correct level of protection is being maintained.
- Control System: Many modern ICCP systems include a control unit that monitors the electrical current output and adjusts it as necessary to maintain optimal protection levels. This control system may also include remote monitoring capabilities for real-time supervision of the cathodic protection system.
- Cabling and Connections: Properly insulated cables are used to connect the anodes to the power supply and reference electrode. These cables must be carefully installed to ensure efficient current delivery and minimize the risk of electrical interference or damage.