Replacement of Capastic Material with Sprayable Dielectric Shields for US Navy ICCP Systems

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Traditional trowelable capastic materials installed as dielectric shields around impressed current cathodic protection (ICCP) systems are difficult and time consuming to apply.  These drawbacks often lead to imperfect shielding resulting in poor protection against degradation of the hull coatings immediately surrounding the anode.  Advanced coatings with high dielectric strength have been shown to perform better than traditional trowelable capastic materials when spray applied at high thicknesses in laboratory testing. Field trials of the process are currently underway to determine the efficacy of these coatings on deployed vessels.