In the ultrasonic testing for periodic inspection of nuclear power plants, it is necessary to decide the inspection condition and probe scanning range before the inspection. Especially, ultrasonic propagation analysis was difficult for complex curved component such as nozzle parts. Therefore, we have developed an ultrasonic propagation simulation technique for three-dimensional complex curved objects based on the definition of curved surface functions and virtual scanner. We can examine appropriate ins...
英字タイトル:
Development of Ultrasonic Propagation Simulation Technique for Three-Dimensional Complex Curved Surface Shape

It is necessary to confirm the validity of crack detection by ultrasonic testing through a stainless steel weld in order to reduce a range impossible of detection by ultrasonic testing. Therefore, we performed ultrasonic testing used to specimen with various weld joint types for providing the basic data (probability and measurement accuracy) of ultrasonic testing methods to reflect on JEAC4207.As the result, ultrasonic testing used to longitudinal wave angle beam technique(including phased array techni...
英字タイトル:
Ultrasonic testing through stainless steel welds

It is necessary to confirm whether the feed water nozzle inside corner has crack by eddy current testing, to enable long-term operation of a plant. Therefore, we performed eddy current testing using various types of specimen to collect basic data (probability and length measurement accuracy) of the eddy current testing methods, complying with JEAG4217. As a result, eddy current testing was effective for the inspection of feed water nozzle inside corner. ...
英字タイトル:
Eddy current testing technique for feed water nozzle inside corner of nuclear reactor pressure vessel