The PD Center at the Central Research Institute of Electric Power Industry (CRIE PI) commenced Performance Demonstration examinations for flaw depth sizing of au stenitic stainless steel pipes in March 2006. As of April, 2009, 23 examination courses have been completed and 27 out of 38 candidates passed the examination....
英字タイトル:
Report on Performance Demonstration for depth sizing of austenitic stainless steel pipes

The PD Center at the Central Research Institute of Electric Power Industry (CRIEPI) commenced Performance Demonstra tion examinations for flaw depth sizing of austenitic stainless steel pipes in March 2006. As of April, 2008, 18 ex amination courses have been completed and 22 out of 36 candidates passed the examination. Many candidates failed th e PD examination due to a failure to distinguish between crack tip echo and echo from weld to base-metal interface....
英字タイトル:
Report on Performance Demonstration for depth sizing of austenitic stainless steel pipes

The PD Center at the Central Research Institute of Electric Power Industry (CRIEPI) commenced Performance Demonstrat ion examinations for flaw depth sizing of austenitic stainless steel pipes in March 2006. As of April, 2010, 26 exam ination courses have been completed and 31 out of 43 candidates passed the examination. The average error margin of the successful applicant of the PD examination to the seventh stage was 0.17 mm, and standard deviation was 2.0 mm....
英字タイトル:
Report on Performance Demonstration for depth sizing of SCC flow in austenitic stainless steel pipes

The Japanese PD qualification examination for SCC through wall depth sizing started in March, 2006, and was operated by PD Center of Central Research Institute of Electric Power Industry (CRIEPI). As of March 31, 2009, 23 examination courses have finished and 27 out of 38 candidates passed the examination. The total number of test including retest was 63. Increase in the examination pass rate of retest personnel indicates improvements in the depth sizing technique through PD qualification examination...
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Evaluation of SCC Depth Sizing Candidate and Performance

In the ultrasonic testing (UT) for weld part of austenitic stainless, it is generally recognized that the UT inspection has difficulty due to dispersion, attenuation, and so on. And, in UT results even for defect-free area of austenitic weld metal, echoes originated from root, columnar structure and interface between weld metal and base metal are observed with some continual variation throughout weld line. UT simulation is a very useful technique for understanding the phenomena in the ultrasonic wave ...
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Simulation of UT signal for columnar structure of weld metal of stainless steel piping

Ultrasonic testing (UT) is one of the most appropriate non-destructive testing because of capabilities for flaw detection and flaw height sizing of flaw. Interpretation and analysis of UT data are not easy, to identify and classify relevant indications are sometimes very difficult. UT personnel shall be qualified to an appropriate level in accordance with a code and standard. In addition, personnel should keep and improve their skills. In this paper, an FEM UT simulation was applied to make UT training data...
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Prototype of UT Training Simulator using Large Scale FEM Simulation

Validation of ultrasonic testing (UT) for detecting stress corrosion cracks (SCCs) in the Pressurizer's dissimilar metal weld of nuclear power plant, PWR, was carried out. Appropriate UT methods using probes consist of separate transmit and receive piezo-electric elements with longitudinal wave can detect both axial and circumferential SCCs ranged from 12% to 23% thickness of weld. ...
英字タイトル:
Validation of Ultrasonic Testing for PWR Pressurizer Dissimilar Metal Weld