Device for protection of a metal catodica structure at sea by means of the anodes sacrificaveis

摘要

Apparatus and system for cathodic protection of a metal structure in the sea by sacrificial anodes. The apparatus has at least one anode of a first type for which the current flow is greater than 10 Amperes/meter2, with potentials on the order of -900 mV/ECS and has at least one anode of a second type for which the current flow is less than 6 Amperes/meter2, with potentials in the order of -900 mV/ECS, the absolute values of the decomposition potential under load of the anodes of the first and of the second type being greater (more negative) than the absolute value of the potential of the protected structure. Such a system can assure the protection of a metal structure in the sea for several dozen years.