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HomeKey Engineering MaterialsKey Engineering Materials Vols. 270-273Development of an ECT Technique for Discriminating...

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

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Advances in Nondestructive Evaluation

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Periodical:

Key Engineering Materials (Volumes 270-273)

Pages:

600-605

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.270-273.600

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Online since:

August 2004

Authors:

Deok Hyun Lee, Myung Sik Choi, Do Haeng Hur, Jung Ho Han, Un Chul Lee

Keywords:

Eddy Current Test, Pressurized Water Reactor, PWSCC, Steam Generator Tube, Through-Wall Crack

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© 2004 Trans Tech Publications Ltd. All Rights Reserved

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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: 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).