Effect of soil resistivity on the design of sacrificial anode cathodic protection system

Abstract

In this research, the effect of soil resistivity on the sacrificial cathodic
protection of a pipeline steel of oil was studied. Sufficient sacrificial cathodic
protection could be obtained at various soil resistivty for different types of
anodes. High current output (2.98, 2.38 and 8.33 Amps) of Zn, Al and Mg
anodes respectively, are obtained at 25 ohms.cm soil resistivity. Simultaneous,
for the same conditions, low numbers and large weights of anodes are required
to satisfy protection