Comprehensive Evaluation Technology in Corrosion Control System of Buried Pipeline

Conditions monitoring and evaluation for the corrosion control system of buried pipeline are very important to safe operating and service life of pipelines. With self-developed conditions monitors of coating system, the evaluation parameters like corrosion current density, pipe-to-soil potential and coating conditions and the effectiveness of CP system are deeply discussed. Then, a mathematical model contained these parameters has been established. An evaluation software has been developed based on this model, which is very helpful to pipeline operator to make maintenance decision.