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Anti-fouling Protection System |
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| INTRODUCTION Seawater is used to cool machinery and plant on board all types of marine vessels. It is also used in petro-chemical plants, power stations and other land-based industries, where there is access to the ocean. The larvae forms of primary marine life such as barnacles and mussels enter seawater intakes, settle on internal surfaces and develop causing bio-fouling. Where bio-fouling exists, corrosion is accelerated, even on the highly resistant surfaces. The reduced water flow resulting from blocked pipe work can cause excessive wear, overheating and inefficiency throughout the system. Sea life is deterred from settling in environments where the natural level of copper is increased. The anti-fouling system release a controlled amount of copper ions into the sea water to deter such settlement on pipes and cooler surfaces. The actual concentration of copper ions is extremely small and measured in micro grams per liter of sea water. |
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APPLICATION Anti-fouling system has a fully automated control system supplying d.c. current to alloyed anodes installed in the seawater intake or sea chest. It is a dual system, tackling both bio-fouling and corrosion Copper ions released from the copper alloyed anodes prevent the survival of microscopic marine life which would otherwise foul the cooling system Ferrous or Aluminum ions released from the second ferrous or aluminum alloyed anode rebuild and repair areas where protective oxides have worn away or being damaged. |
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