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Simulation and Evaluation of ECT Signals From MRPC Probe in Combo Calibration Standard Tube Using Electromagnetic Numerical Analysis  

Yoo, Joo-Young (School of Mechanical Engineering, Sungkyunkwan University)
Song, Sung-Jin (School of Mechanical Engineering, Sungkyunkwan University)
Jung, Hee-Jun (School of Mechanical Engineering, Sungkyunkwan University)
Kong, Young-Bae (School of Mechanical Engineering, Sungkyunkwan University)
Publication Information
Journal of the Korean Society for Nondestructive Testing / v.26, no.2, 2006 , pp. 90-98 More about this Journal
Abstract
Signals captured from a Combo calibration standard tube paly a crucial role in the evaluation of motorized rotating pancake coil (MRPC) probe signals from steam generator (SG) tubes in nuclear power plants (NPPs). Therefore, the Combo tube signals should be consistent and accurate. However, MRPC probe signals are very easily affected by various factors around the tubes so that they can be distorted in their amplitudes and phase angles which are the values specifically used in the evaluation. To overcome this problem, in this study, we explored possibility of simulation to be used as a practical calibration tool far the evaluation of real field signals. For this purpose, we investigated the characteristics of a MRPC probe and a Combo tube. And then using commercial software (VIC-3D) we simulated a set of calibration signals and compared to the experimental signals. From this comparison, we verified the accuracy of the simulated signals. Finally, we evaluated two defects using the simulated Combo tube signals, and the results were compared with those obtained using the actual field calibration signals.
Keywords
ECT; MRPC; Combo Calibration Standard Tube; Simulation; Signal Evaluation;
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  • Reference
1 Electric Power Research Institute, PWR Steam Generator Examination Guidelines: Revision 6, EPRI, Nuclear Power Group, Palo Alto, California, (2002)
2 Sung Jin Song, Chang Hwan Kim, Deok Hyun Lee, Myung Sik Choi, Do Haeng Hur and Jung Ho Han, 'An Automated System for System for Detection of Through-wall Cracks in Steam Generator Tubes,' Key Engineering Materials, Vols. 297-300, pp. 2071-2076, (2005)   DOI
3 VIC-3D User Manual , Victor Technologies, Bloomington, Indianapolis, (2005)
4 W. Scott Dunbar, 'Th e volume integral method of eddy current modeling,' Journal of Nondestructive Evaluation, Vol. 5, No. 1, pp. 9-14, (1985)   DOI   ScienceOn