Cathodic Protection (CP) for floating structures has to include current drain to mooring systems. Current drain to mooring systems has to be accounted for both on the floating structures and at the anchor side at the sea bottom. The prevailing recommended practices state that current drain to 30 m of the chains both on the floating structures and at the anchor side has to be included in the CP design. In addition for the floating structure the seawater exposed chains down to the fairlead have to be included. Experiences over the last years have given some indications of significantly higher current drain to mooring system both from ICCP system and galvanic system.

Subject
Electric current, Impressed current cathodic protection, Cathodic protection, Oxide layers, Structures, Rolling, Floating, Anchors, Penetration, Current densities, Steel, Electric potential, Impressed current
Keywords:
Current Drain, Mooring Chains, Impressed Current Cathodic Protection
Government work published by the Association for Materials Protection and Performance (AMPP) with permission of the author(s). Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
2009
GOV
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