Soil resistivity is a crucial factor affecting the effectiveness of a cathodic protection (CP) system for buried pipelines. Soil resistivity measures how well the soil conducts electrical current. A low soil resistivity means the soil conducts electricity easily, while a high soil resistivity means the soil resists the flow of electricity. In a CP system, current must flow from the anode (either a sacrificial anode or an impressed current anode) through the soil to the pipeline to provide cathodic protection. If the soil resistivity is h....
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