Potential Measurement at pipeline specific parts under cathodic protection

The result of cathodic protection has direct relationship with buried pipeline s life span and operation safety. Regular method used to evaluate the result of cathodic protection at pipeline specific parts often caused deviation and left some hidden troubles to safety operation. By analyzing the test data, pointed out the reason occurred at the specific parts of the pipeline, which put forward a beneficial supplement and reference for the evaluation method on ground test of pipe-soil potential.