Feeding Test on Impressed Current Cathodic Protection for City Natural Gas Pipelines

Feeding test on impressed current cathodic protection for natural gas pipeline had been conducted in the urban area of a northwest city. Here were tested the measurement parameters including the pipe/ground natural potential, the pipe/ground polarization potential, pipeline electric potential gradient, ground resistance and non-protected pipeline potential. The minimum current density required by cathodic protection was 10 mA/m². All the results have verified the safety, scientificity and feasibility of using deep well anode technology for city natural gas pipeline.