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

Document Type : Research Paper

Abstract

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.

Keywords


منابع
1] دادخواه س.، دادخواه ا.، تکنولوژی بازرسی جوش، نشر آزاده، 1385]
[2] McMaster R.C., “Nondestructive testing handbook”, 2nd ed., Vol Testing ,1986.
[3] Tian G.Y. & Sophian A, “Defect classification using a new feature for pulsed eddy current sensors”, NDT & E International, Vol. 38(1), pp. 77-82, January 2005.
[4] Safizadeh M.S., Lepine B.A., ForsythVz D.S & Fahr A., "Time-frequency analysis of pulsed eddy current signals", Journal of Nondestructive Evaluation, Vol. 20, No. 2, pp. 73-86, 2001.
[5] Riccardo Scottini Herman J., “Inspection of coated subsea piping and risers quakkelsteijn applus RTD”, American Society for Nondestructive , pp. 4-27, 2007.
[6] Tian GY. & Sophian A., “Reduction of lift-off effects for pulsed eddy current NDT”, NDT & E International, Vol. 38(4), pp. 319-324, 2005.
[7] Giguere S., Lepine B. A. & Dubois J.M.S., “Pulsed eddy current technology: characterizing material loss with gap and lift-off variations”, Res Nondestr Eval, Vol. 43, pp. 119–129, 2001.