We are developing portable non-destructive testing (NDT) X-ray source with X-band linac and low power magnetron. Now, we start the experiment of electron acceleration and X-ray generation using by 950 keV X-band linac NDT system. The 950 keV X-band linac X-ray generator is under development for corrosion wastage of tubes and condition bas ed maintenance of impeller pumps. However, about 1 MeV X-ray source can be only used for thin tubes of about 20 mm thickness. Therefore, we start to design about 4 MeV X-...
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Development of High Energy X-ray NDT System with 3.95 MeV X-band Linac

Abstract: Since more and more bridges built several decades ago in Japan have become aged and dangerous, the non-destructive evaluation of those bridges is really an urgent problem. CT system with portable 3.95MeV linacs for bridge inspection is considered to work on-site, considering the law of Japanese radiation protection allows using linacs up to 4MeV outside radiation controlled area. The system would confirm the internal steel si tuation of bridges and analyze structural strain and stress with 3D mod...
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On-Site Bridge Inspection with Partial CT by 3.95Mev X-Band Linac Source

In situ CT application for NDE of degradation bridges is under development, with portable 950keV/3.95 MeV X-band linac as x-ray source. Collimator is adopted to reduce scattered X-ray noise. Material analysis and erosion estimation through dl-energy CT method is integrated in order to inspect the erosion situation of i nner steel rod. Reconstruction technique with incomplete projection data is studd considering limitation of projection angle range during onsite scanning. Furt hermore, based on 3D model bui...
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Partial Inspection and Dual-energy CT Material Analysis with 950keV/3.95MeV X-Band Linac

The PD Center of Central Research Institute of Electric Power Industry (CRIEPI) commenced performance demonstration examinations (PD examination) for flaw depth sizing of austenitic stainless steel pipes in March 2006. At the end of FY 2015, 44 examination sessions have been completed and 58 candidates have passed the examination. The total number of PD examinee including re-tests and re-certification was 104. Passed candidates can perform depth sizing of SCC flaws with a high level of accuracy during ...
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Implementation report for 10 years after the start of Japanese performance demonstration examination

The PD Center of Central Research Institute of Electric Power Industry (CRIEPI) commenced Per formance Demonstration examinations for flaw depth sizing of austenitic stainless steel pipes n March 2006. At the end of FY 2013, 40 examination sessions have been completed and 49 cand ates have passed the examination. The total number of tests administered including re-tests and re-certification was 95. It was noted that the final call for the crack length (PD examin ation answer) was adopted the phased array m...
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Implementation status for eight years after the start of PD qualification examination in Japan

The PD Center of Central Research Institute of Electric Power Industry (CRIEPI) commenced Performance Demonstration examina tions for flaw depth sizing of austenitic stainless steel pipes in March 2006. As of February, 2011, 29 examination courses have been completed and 38 out of 49 candidates passed the examination including recertification test. The average error mar gin of the successful applicant of the PD examination to the eleventh stage was 0.31 mm, and standard deviation was 1:9 mm....
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Report on Performance Demonstration test for depth sizing of SCC in austenitic stainless steel pipes during five years

The PD Center of Central Research Institute of Electric Power Industry (CRIEPI) commenced Performance Demonstration examin ations for flaw depth sizing of austenitic stainless steel pipes in March 2006As of January, 2012, 34examination courses h ave been completed and 37out of 47candidates passed the examination including recertification test. The average error marg in of the successful applicant of the PD examination to the eleventh stage was 0.32mm, and standard deviation was 1.93mm....
英字タイトル:
Report on Performance Demonstration for depth sizing of SCC in austenitic stainless steel pipes

The PD Center of Central Research Institute of Electric Power Industry (CRIEPI) commenced Performance Demonstration examinations for flaw depth sizing of austenitic stainless steel pipes in March 2006. As of January 2013, 37 examination sessions have been completed and 44 candidates have passed the examination. The total number of tests administered including re-tests and re-certification was 89. It was noted that depth sizing using a phased array plus the manual UT technique was the procedure most use...
英字タイトル:
Report on Japanese Performance Demonstration examinations For depth sizing of SCC in austenitic stainless steel pipes

The PD Center of Central Research Institute of Electric Power Industry (CRIEPI) commenced Performance Demonstration examinations for flaw depth sizing of austenitic stainless steel pipes in March 2006. At the end of FY 2014, 42 examination sessions have been completed and 53 candidates have passed the examination. The total number of tests administered including re-tests and re-certification was 99. Passed candidates can perform depth sizing of IGSCC flaws with a high level of accuracy. For the final d...
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Current status for nine years after the start of PD qualification examination in Japan

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