A New Type Anode for Cathodic Protection of Offshore Engineering Steel Structures

For offshore sacrificial anode cathodic protection systems, the anode weight and initial current density are both requred. In order to achieve the requirements, a big value should be adopted, which may result in the waste of anode. The use of a new anode may improve the ratiod of surface area to volume and current to weight and thus reduce the waste of anode. The conventional configuration anode (long) was compared with a new type (airfoil type) anode through the cathodic protection measurement system to confirm the electrochemical properties and the practical feasibility of the new type anode. The results show that the replacement of new type (airfoil anode) anode to the conventional square strip anode can greatly reduce the weight of anode while the initial current also can be meeted, so as to avoid the waste of the anode.