Marine ICCP
Core Products
▎Marine Impressed-Current Cathodic Protection System – Type 1
Inlaid ICCP System:
The individual components of the auxiliary anode are encapsulated as a single unit using rubber, with a streamlined overall profile at the edges, enabling secure mounting on the ship’s outer hull surface and thereby effectively reducing hydrodynamic drag.
The rubber on the anode working surface is tightly bonded to the titanium plate, effectively preventing seawater from penetrating into the anode interior through this interface and thereby mitigating the risk of anode short-circuiting.
The anode working surface is equipped with multiple conical seals, which effectively ensure watertightness between the anode and the hull.
Reference electrode:
♦️ The exterior is rubber-encapsulated to ensure water tightness and electrical insulation;
♦️ The electrode is made of high-purity zinc, offering stable performance and a long service life.
Auxiliary anode:
♦️ The overall hull form is streamlined, effectively reducing ship resistance;
♦️ One-piece construction effectively prevents seawater from entering the anode and causing a short circuit;
♦️ The working surface is equipped with multiple conical seals, effectively ensuring watertightness between the anode and the hull.
Multiplex Controller:
♦️ Multi-channel power supply, independently adjustable, and mutually redundant;
♦️ Remote control and local control;
♦️Fault alarm function.
▎Marine Impressed-Current Cathodic Protection System – Type 2
Mixed Metal Oxide Anode:
♦️ Exhibits excellent electrical conductivity, high operating current density, and minimal polarization;
♦️ Exhibits excellent chemical and electrochemical stability in harsh environments, with low consumption rates and long service life;
♦️ Excellent mechanical properties, resistant to damage, and easy to process, manufacture, transport, and install;
♦️ The overall protection cost is low, encompassing the full lifecycle costs of the anode material as well as the installation and operational expenses of the anode assembly.
Tensioned ICCP:
♦️ The load-carrying cable, power supply core conductors, and auxiliary anodes are highly integrated into a single unit. This design not only provides mechanical load-bearing capacity but also enables current transmission for the auxiliary anodes.
♦️ The output current of each integrated auxiliary anode in the composite cable can be independently adjusted to protect the hull structure;
♦️ The composite cable–electrode system is installed on the outer surface of the hull, with auxiliary anodes arranged along the composite cable, thereby minimizing interference with the hull’s structural integrity and ensuring the stability and reliability of the hull structure.
♦️ The composite cable material exhibits excellent resistance to seawater corrosion and outstanding aging resistance;
♦️ Possesses excellent storm-resistance, ensuring adaptability and reliability under the harsh sea conditions of this maritime area.
▎Marine Impressed Current Cathodic Protection System
◎Auxiliary Anode
The titanium auxiliary anode disc and its internal liner are encapsulated and encased in rubber. The encapsulated auxiliary anode disc is then submerged into the flanged tank bottom plate. One terminal post and six securing nuts pass through the bolt holes in the auxiliary anode base plate (which is welded to the flanged tank bottom plate) and extend into the watertight flanged tank compartment, where the bolts are tightened to ensure tight contact between the auxiliary anode’s rubber sleeve and the base plate, thereby maintaining watertight integrity.
Given that naval vessels typically have a service life of more than 25 years, the auxiliary anodes exposed on the hull during this period are subject to a certain degree of damage. To prevent loss of ICCP output current due to accidental damage, our company offers auxiliary anode products that can be replaced underwater. Through coordinated efforts between divers and onboard personnel, damaged auxiliary anodes can be quickly replaced, thereby ensuring that the continuous service life of the auxiliary anodes is no less than 25 years.
The reference electrode is used to measure the potential of the wet surface of the protected structure, providing baseline data for analyzing the cathodic protection status of the hull and preventing both overprotection and underprotection. The multiplex controller issues overprotection or underprotection alarms based on preset thresholds. In potentiostatic mode, the multiplex controller adjusts the output current of the auxiliary anode according to the difference between the measured potential and the set protection potential, thereby ensuring that the potential at the monitoring point reaches the desired protection level. In constant-current mode, the reference electrode is solely used to monitor the hull surface potential.
To prevent accidental damage to the reference electrode from compromising ICCP monitoring and control, KOMMER offers a reference electrode that can be replaced underwater. Through coordinated efforts between divers and onboard personnel, damaged reference electrodes can be swiftly replaced, thereby ensuring that the auxiliary anodes maintain a service life of at least 25 years.
▎Marine Impressed Current Cathodic Protection Technology
High-value, high-end offshore engineering equipment such as large floating offshore platforms and FPSOs incur substantial docking-repair costs; therefore, the adoption of highly reliable corrosion-control technologies for their primary structural components is of paramount importance. To achieve the goal of long-term, continuous production, a long-life ICCP system represents one of the critical foundational requirements.
Currently, the main issues with ICCP system equipment products available in the international market include:
(1) Lacks monitoring and assessment capabilities for the overall corrosion protection status;
(2) The level of system control technology is low, making it impossible to achieve autonomous, fine-grained regulation based on the overall corrosion protection performance. Moreover, although the localization rate of supporting equipment for high-end offshore engineering facilities built in China has been steadily and rapidly increasing, ICCP system equipment remains monopolized by foreign suppliers. Therefore, it is highly necessary to develop and deploy long-life ICCP system equipment for FPSOs that is protected by China’s own intellectual property rights.
Contact Information
Address: Company Headquarters:Building A, Overseas Students’ Entrepreneurship Park, No. 1 Huoju Road, High-tech Industrial Park, Dalian
Experiment–Manufacturing Base: Tangli Industrial Park, Hongqi Subdistrict, Ganjingzi District, Dalian City
Telephone: Corporate Headquarters: 0411-84660668
Experiment-Manufacturing Base: 0411-82646110
Email: info@kingmile.com
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