| 1. Activity Report of Condition-based Maintenance Technology(CMT)Panel of Japan Society of Maintenology |
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Panel Chair: Mitsuru Uesaka |
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Nuclear Professional School, University of Tokyo |
| 2. Condition Based Maintenance Technology Panel in Japan Society of Maintenology
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Chair: Prof. K. Miya |
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Assesement WG chaired by Dr.A.Yamaguchi |
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Technology WG chaired by M.Uesaka |
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Focused on Pumps containing Bearings now |
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Fracture Test and In-situ Measurements by practical methods of Vibration, AE, Oil and Debris Analysis, and Thermography |
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New Techniques; Guide-wave UT, EMAT, On-site RT, Optical Fiber Brug Peak Measurement. |
| 3. Bearing Experiment |
| 4. Electromagnetic Signal Pick-up for Real Horizontal Circulating at Technical Training Center, Pump by IIU Co. Ltd, Nuclear and Industrial Safety Agency, METI |
| 5. Spectrum of Electromagnetic Signal from Impeller (CH1) |
| 6. FFT Signal (CH3) for Bearing |
| 7. Guided-wave UT method |
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Tokushima University |
| 8. EMAT-EC Multi-probe Institute of Fluid Science, Tohoku University |
| 9. Introduction |
| 10. Comparison with other system |
| 11. Regulation of Radiation Safety in Japan for Electron Linear Accelerators |
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Below 1 MeV |
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Allowed to be used outside radiation controlled area with reasonable local shielding and protection system |
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Below 4 MeV |
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Allowed to be used outside radiation controlled area only for inspection of bridges |
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Over 6 MeV |
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Should be used in radiation controlled area for Medical use and Scientifc and security- applications |
| 12. System configuration |
| 13. Measurement of discrimination ability by using wire type penetrometer |
| 14. Concept of Real-Time Imaging |
| 15. Experimental Setup |
| 16. Results |
| 17. J-PARC Proton Synchrotron and Neutron Spallation Source And Residual Strain/Stress Measurement |
| 18. Summary Subjects |
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Synchronized transmission on-line imaging by 950 keV portable X-ray source has been performed. |
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Practical bearing containing ~0.5 mm defect at impeller plans to be tested. |
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Further, the lifetime evaluation test by vibration, AE, oil and debris analysis and thermography is under way. |
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Residual strain/stress before macroscopic cracks is going to be measured. |
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Reliable lifetime evaluation of bearing using overall high-tech measurements is the final target of the CMT panel. |
JSM 7th Annual Conference at Omaezaki, Shizuoka
Planning and Consideration on SFR R&D Activities in China
