Open Cooling Water Systems
MME’s system is based on using impressed current to produce small quantities of copper ions which, at very low concentrations, are efficient against marine fouling. By adding aluminium or soft iron (depending on the material of the cooling water system), a corrosion-suppressing film is achieved.
By passing a direct current between a copper anode and the sea chest or cooling water system, copper ions flow through the system, creating an environment in which microorganisms do not adhere to the surface, but are carried straight through. For cathodic protection of the systems, aluminium or iron ions are added.
The ideal functioning of the system partly depends on the flow and composition of the seawater. MME’s systems can communicate with vessel’s management systems to provide an intelligent solution to the problem of marine growth and corrosion in the cooling water system. By using the latest technologies, copper release is reduced to an absolute minimum, allowing for longer maintenance intervals and reduced costs.
Carbon Steel Piping Systems
When a direct current is passed through anodically polarised aluminium, the aluminium will breakdown in highly voluminous but poorly soluble aluminium hydroxide. While carried downstream, the hydroxide transports the copper ions and deposits them on the internal surfaces of the pipelines.
Cupronickel and other copper alloyed systems
To reduce the risk of corrosion in cupronickel cooling water systems, iron ions, released from an activated iron anode, are added to the flow by the same system. These ions assist the cupronickel alloy in maintaining its protective oxide layer.