EICS
Impressed Current Anti Fouling (ICAF)
FromEICS
Water used for cooling, evaporators, firefighting, and other ancillary systems. Marine growth (algae, mussels, barnacles, etc.) can quickly reproduce and grow in the warm conditions. Without an effective solution to prevent bio-fouling, these systems will run at abnormally high temperatures, resulting in unnecessary increased fuel consumption, lower performance and higher wear and tear of the vessel’s engine(s), making failures more likely to occur.
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Carbon steel
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 alloys
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.