Overview of ICCP hull impressed current cathodic protection devices

Overview of ICCP hull impressed current cathodic protection devices

(1) Protected area Submerged hull area (estimated) 1814.32m2 Propeller area 16.36m2 rudder area 20.04m2

(2) Impressed current cathodic protection design parameters protection area: the hull surface below the waterline (the sacrifice anode should still be installed in the submarine door as usual, not included).

Protection potential: underwater surface of hull 0.75~0.95V (relative to Ag/AgCl reference electrode, same below); Protection current density: hull, 45mA/m2; Propeller, 600mA/m2; Rudder, 150 ma/m2.

2.3 Main components of impressed current cathodic protection system (Specifications and Quantity) one potentiostat, input 380V/50Hz, output 100A/16V; 2 ruthenium-titanium auxiliary anodes type B, each with a maximum output of 50A, 2 watertight enclosures; Two silver/silver chloride reference electrodes and two watertight enclosures; Anodic shield layer, 8910 coating a and b components each 3 barrels, total weight of 41.4kg).

2. Suggestions for use ICCP hull impressed current cathodic protection

Commissioning and installation of ICCP system as soon as possible after the completion of installation and construction: all lines of the device should be checked to confirm that the laying is correct; Potentiostat, energized, debugged with simulated load to confirm normal (this equipment has been debugged with simulated load before delivery); The auxiliary anode shall be checked to confirm that it is not short-circuited with the hull by means of measuring potential or resistance; Reference electrode, the method of measuring potential with a high impedance digital voltmeter, to confirm normal. Commissioning of the wharf is completed and everything is normal before sailing.

(1) Commissioning for the first voyage after installation and maintenance of the hull impressed current Cathodic protection system for navigation  Maintenance price of the hull impressed current Cathodic protection system  Maintenance manufacturer of the hull Impressed current Cathodic protection system  Hull outside...

When a ship is at sea:

(1) Measuring hull self-potential with hull mounted reference electrodes: using a high impedance digital voltmeter; Test every 1 ~ 2 hours, continuous test three times, normal hull self-potential -0.4 ~ -0.6V; Keep records.

② After the hull self-potential test is completed, the potentiostat shall be enabled according to the requirements of the "Potentiostat Operation Manual". Read the instruction book carefully before starting the machine and use according to the instruction book.

(3) The control potential is set at 50mV higher than the spontaneous potential, and then gradually increases until the hull potential is within the protective range (for instruments using silver/silver chloride reference electrodes, the shown reference potential should be 0.75V ~ 0.95V).

(4) Establish the operation log of the device and insist on recording the daily working conditions. ICCP hull impressed current cathodic protection device record format.

The present invention provides a Marine stereo anode impressed current cathodic protection device, its characteristic is that, including anode bed, watertight cover and watertight cover flange, watertight cover at one end of the sealing flange connection watertight cover, the other end of the sealing connection anode bed, anode and anode bed with terminal, with anode anode block, terminal connects to the anode, and the other end of the show from the anode bed and set up In the water tight cover, the anode and the terminal column constitute an anode system, and an electrical insulation structure and a sealing structure are arranged between the anode system and the anode bed, and the side wall of the water tight cover is sealed to connect the cable thread pipe interface flange pipe. The anode has a three-dimensional structure. The invention adopts a three-dimensional structure anode body design, which effectively increases the working area of the anode system, reduces the installation size of the anode system and greatly improves the space efficiency of the anode system within a specific working size range.

The effective method to prevent corrosion of underwater part of hull is the combination of paint coating and impressed current cathodic protection. The applied current system consists of an anode assembly with or without an anode screen (лута-1 system), a reference electrode, a brush contact device, a power supply and a switchboard. The anode assembly mounted on the outside of the hull consists of an anode and an insulating carrier. The effect and life of impressed current cathodic protection system mainly depend on the reliability and life of the anode assembly, which should be close to the life of the ship. The anode assembly must be ensured in the impressed current system ICCP hull for impressed current cathodic protection

Design and layout should be based on the size of the protected area. Both the auxiliary anode and the reference electrode should pass through the hull in order to form a loop and obtain an accurate potential difference.