NEWS

Impress Current Cathodic Protection (ICCP) is an advanced active defense technology used in corrosion protection engineering. It serves as an invisible anti-corrosion shield for ship hulls. By applying a controlled electrical current to the hull surface, the ICCP system establishes a protective electronic barrier that inhibits corrosion reactions in seawater. Unlike traditional sacrificial anode methods, ICCP systems can automatically adjust current output in response to changing environmental conditions—such as variations in salinity and temperature—providing more durable, stable, and adaptive protection.

I. System Composition：

The ICCP (Impressed Current Cathodic Protection) system typically consists of the following main components:

1. DC Power Supply: This is the core of the system, providing the direct current required for protection. It functions to monitor and adjust the output current to the auxiliary anodes in real time.

2. Anode: Usually made of titanium coated with precious metal oxides, it evenly distributes the current into the seawater.

3. Reference Electrode: A precise sensor for the corrosion status of the hull, used to monitor the potential of the protected structure and determine the effectiveness of the protection.

4. Control and Monitoring Equipment: Used to regulate the power output and monitor and record the system's operating parameters.

II. Usage Instructions: Pre-Operation Preparations：

Before operating the ICCP system, the following preparations are required:

1. System Inspection

Check whether the power supply equipment is functioning normally, including whether the voltage and current output are stable.

Check the appearance of the anode to ensure there is no damage or corrosion.

Check if the connection of the reference electrode is secure and whether the electrode is in normal working condition.

2. Environmental Assessment

Understand the environmental conditions of the structure to be protected, such as the corrosiveness of the medium, temperature, humidity, etc.

Assess potential surrounding interference factors, such as stray currents, electromagnetic fields, etc.

3. Personnel Training

Operators should be familiar with the principles, operational procedures, and safety precautions of the ICCP system.

They must complete relevant training and obtain an operation qualification certificate.

III. Operation Steps：

1. System Startup

Connect the power supply, and set the initial output voltage and current according to the device manual.

Observe the operating status of the power supply to ensure stable output.

2. Potential Monitoring

Regularly monitor the potential of the protected structure using a reference electrode.

Adjust the power supply output based on the monitoring results to maintain the potential within the specified protection range.

3. Data Recording

Record key parameters during system operation, such as voltage, current, potential, time, etc.

Establish detailed operational records for subsequent analysis and maintenance.

4. System Maintenance

Regularly inspect the working condition of the anode and clean or replace it if necessary.

Check whether cable connections are secure and undamaged.

Calibrate and maintain the control and monitoring equipment.

Ⅳ. Notes：

1. Safety Protection

Operators should wear necessary protective equipment during operation, such as insulated gloves, safety goggles, etc.

Avoid unnecessary operations in damp or live environments.

2. Interference Handling

If stray currents or other interference factors are detected that affect system operation, prompt measures should be taken to eliminate them.

Interference can be reduced by adjusting anode placement, adding shielding, or employing similar methods.

3. Fault Handling

In the event of system failures, such as power issues or abnormal potentials, operation should be halted immediately, and troubleshooting should be conducted.

Repairs must be performed in accordance with the fault handling guidelines provided by the equipment manufacturer.

4. Regular Testing

Conduct comprehensive periodic testing of the system to evaluate its protection effectiveness.

Adjust system operating parameters or perform necessary maintenance based on the test results.

In summary, proper operation of the ICCP system is essential for ensuring long-term corrosion protection of metal structures. Operators must strictly follow the operational guidelines, closely monitor the system’s operational status, and promptly address any issues that arise, thereby guaranteeing the system’s stable performance and effective protection.