Simulation Mechanism of Corrosion test, and Corrosion Measurement on Unburied Gas Pipeline with Isolation Using Pulsed Eddy Current Technique

Internal corrosion in pipelines is a significant problem in oil and gas transmission systems. Corrosion severely affects pipeline operations, leading to loss of production, unscheduled downtime for maintenance or repair, and even catastrophic failure, which impacts health, environment, and safety. This paper presents pulsed eddy current method as an advanced, non-destructive technique in corrosion detection on unburied gas pipelines.Moreover, this method provides promising results in internal corrosion detection of gas pipelines without removing insulation from the pipe. In this paper, first, the principals of pulse eddy current method are pointed out. Then, the pulsed eddy current test on a pipe is simulated by Maxwell software to obtain test parameters.Finally, corrosion on an isolated gas pipe is measured using pulsed eddy current test and the results obtained are verified.