Modeling the Cathodic Protection System for a Marine Platform Jacket

摘要

The influence of a sacrificial anode cathodic protection (CP) system designed for corrosion protection of a marine platform jacket was modeled using the finite element method. A numerical model was applied to calculate the distributions of potential and protective current density (CD) on the jacket and to evaluate anodic CD output from the anodes in the two environments of the Persian Gulf and the Caspian Sea. The optimum design for the CP system was determined. The results indicated uniform potential distribution and mass loss rate of anodes in this optimized design. The modeling results were verified by field measurements.