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Maki, Akira; ; Taguchi, Katsuya; ; Shimizu, Ryo; Shoji, Kenji;
JNC TN8410 2001-012, 185 Pages, 2001/04
JNC-TN8410-2001-012.pdf:9.61MB
"The third technological meeting of Tokai Reprocessing plant (TRP)" was held in JNFL Rokkasyo site on March 14
, 2001. The technical meetings have been held in the past two times. The first one was about the present status and future plan of the TRP and second one was about safety evaluation work on the TRP. At this time, the meeting focussed on the corrosion experrience, in-service inspection technology and future maintenance plan. The report contains the proceedings, transparancies and questionnaires of the meeting are contained.
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PNC TJ9602 97-001, 19 Pages, 1997/03
Failure of machine and structure has to be prohibited to avoid the leak of liquid natrium. The technology of detection of pre-existing phenomena before final failure becomes very important. In this basic study, the laser based ultrasonic sensor technique which is one of promising methods was invernstigated to summarize its principle and current status and to know the applicability of this method. Firstly the importance of non-destructive evaluation (NDE) method and the history of laser based NDE were reviewed. The technological basic of the non-contact generation of elastic wave by laser radiation and the non-contact defection of ultrasonic wave by laser interference technique. The difference of two modes of generation of elastic wave, that is, thermal stress mode and ablation mode, was reviewed. The detection methods of ultrasonic wave by laser interference such as homodyne interferometer, time-delay interferometer and confocal Fabry-Perot interferometer were investigated and their principle and characteristics were compared. Finally, examples of application of these methods for rough surface samples and high temperature materials were considered. It was concluded that these laser based NDE techniques were able to be used in practical applications.
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PNC TN9420 92-014, 125 Pages, 1992/11
This report decribes the development of multi-array type probe for FBR steamgenerator tube. We studied integration between three kinds of probes, which were for axial flaw, for circumferential flaw and for wall thickness flaw, detecting method of accuracy locating probe and basic composition of multi-channel detector. It was comfirmed that each devices had object performance in performance test. We shall use this results to study design and manufacture of ultrasonic testing equipment for steamgenerator of FBR Monju.
Nagai, Shuichiro; ; Tobita, Noriyuki; Seki, Masayuki; Tsutagi, Koichi; *;
PNC TN8410 91-010, 49 Pages, 1991/01
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