This paper discusses numerical methods for modelling cathodic protection (CP) using Boundary Element Methods(BEM) for CP design analysis in comparision with the traditional methods and presents several mathematical models (for CP design in 3-D infinite area) solvable by using BEM with microcomputer. Methods for numerical analysis and computer modelling were developed as practical tools for structural engineers more than 20 years ago. There were similar developments in the last decade in the field ofcorrosion and CP (Schremp, 1982; Cochran, 1982; Munn, 1986; Strommen and Kein, 1986).
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