Predictions of Pulse-Echo Ultrasonic Signals from Inner Wall Cracks in BWR Nozzles

Date
1995
Authors
Minachi, A.
Thompson, R. Bruce
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Formation of cracks on the inner walls of nozzles of Boiling Water Reactors would be of great concern for nuclear power industry. These nozzles, which connect the piping to the pressure vessel of the nuclear reactors, are therefore inspected periodically using ultrasound. However, there are complications in ultrasonic inspection of such nozzles due to the curvature of these components. Such curvatures can greatly influence the wave propagation through them. Therefore, there is a need for practical beam models to study such complications in these kinds of geometries.

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