Development of an ECT Technique for Discriminating between a Through-Wall/Non Through-Wall Crack in a Steam Generator Tube

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Periodical:

Key Engineering Materials (Volumes 270-273)

Edited by:

Seung-Seok Lee, Dong-Jin Yoon, Joon-Hyun Lee and Sekyung Lee

Pages:

600-605

Citation:

D. H. Lee et al., "Development of an ECT Technique for Discriminating between a Through-Wall/Non Through-Wall Crack in a Steam Generator Tube ", Key Engineering Materials, Vols. 270-273, pp. 600-605, 2004

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August 2004

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[1] S.J. Green and J.P.N. Paine, Nuclear Technology, Vol. 55 (1981), p.10.

[2] C. Lemaignan, Int. J. Pres. Ves. & Piping, Vol. 15, (1984), p.241.

[3] D.H. Lee, M.S. Choi, D.H. Hur and J.H. Han, The Effect of Axial ID Crack Opening and Onset of Leak upon the Eddy Current Signal in Steam Generator Tube, " Proc. Joint EC-IAEA Technical Meeting on Improvement in In-Service Inspection Effectiveness, Petten, The Netherlands, 19-21, November, (2002).

[4] D.H. Hur, M.S. Choi, D.H. Lee, M.H. Song and J. H. Han, Effect of Shot Peening on PrimaryWater Stress Corrosion Cracking of Thermally Treated Alloy 600 Tubes in an Operating PWRPlant, to be published in Nuclear Engineering and Design.

DOI: https://doi.org/10.1016/j.nucengdes.2003.09.002

[5] Saario and J.P.N. Paine, Effect of the Surface Film Electrical Resistance on Eddy Current Detectibility of Surface Cracks in Alloy 600 Tubes, Proceedings of the 7th International Symposium on Environmental Degradation of Materials in Nuclear Power System-Water Reactors, Breckenridge, Colorado, (1995).

2 4 6 8 10 12 -2.

[2] [4] [6] [8] [10] [12] Amplitude Difference between Pancake and Plus Non Through-Wall Length, mm As Cracked(Tight Crack) As Cracked(Re-Test) Opened at 4500psig Opened at 5000psig.

2 4 6 8 10 12 -2.

[2] [4] [6] [8] [10] [12] Through Wall Amplitude Difference between Pancake and Plus Length, mm Leak Tight Crack Leak at 2100psig(1 lph) Leak at 2200psig(3 lph).