Cause Analysis and Solution of Abnormal Behavior of Cathodic Protection for Chad Crude Pipeline

The cathodic protection system design, construction and commissioning for Chad crude pipeline were introduced. Abnormal corrosion potential and current leakage in valve station were analyzed in the cathodic protection system commissioning, and above problems were solved by completely disconnecting the temporary sacrificial anodes and increasing an insulation between iutput and output ends of potentiostat.