Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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A PERFORMANCE ASSESSMENT OF A BASE ISOLATION SYSTEM FOR AN EMERGENCY DIESEL GENERATOR IN A NUCLEAR POWER PLANT

  • Published : 2008.06.30
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Abstract

This study evaluates the performance of a coil spring-viscous damper system for the vibration and seismic isolation of an Emergency Diesel Generator (EDG) by measuring its operational vibration and seismic responses. The vibration performance of a coil spring-viscous damper system was evaluated by the vibration measurements for an identical EDG set with different base systems - one with an anchor bolt system and the other with a coil spring-viscous damper system. The seismic performance of the coil spring-viscous damper system was evaluated by seismic tests with a scaled model of a base-isolated EDG on a shaking table. The effects of EDG base isolation on the fragility curve and core damage frequency in a nuclear power plant were also investigated through a case study.

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References

  1. J.W. Asher, S.N. Hoskere, R.D. Ewing, R.L. Mayes, M.R. Button, and D.R. Van Volkinburg, 'Performance of Seismically Isolated Structures in the 1994 Northridge and 1995 Kobe Earthquakes,' Proc. ASCE Structures Congress XV, Vol. 2, Portland, Oregon, Apr. 13-16, 1997
  2. P.W. Clark, I.D. Aiken, M. Nakashima, M. Miyazaki, and M. Midorikawa, 'The 1995 Kobe (Hyogo-ken Nanbu) Earthquake as a Trigger for Implementing New Seismic Design Technologies in Japan,' Lessons Learned Over Time, Learning From Earthquakes, Volume III, Earthquake Engineering Research Institute, Oakland, California, 2000
  3. B. Bessason and E. Haflidason, 'Recorded and Numerical Strong Motion Response of a Base-Isolated Bridge,' Earthquake Spectra, 20, 2 (2004)
  4. F. F. Tajirian, 'Base Isolation Design for Civil Components and Civil Structures,' Proc. Structural Engineers World Congress, San Francisco, California, July 18-23, 1998
  5. S. R. Malushte and A. S. Whittaker, 'Survey of Past Base Isolation Applications in Nuclear Power Plants and Challenges to Industry/Regulatory Acceptance,' Trans. 18th Int. Conf.on Structural Mechanics in Reactor Technology (SMiRT 18), Beijing, China, Aug. 7-12, 2005
  6. J. M. Kelly, 'The Influence of Base Isolation on the Seismic Response of Light Secondary Equipment,' UCB/EERC- 81/17, Earthquake Engineering Research Center, University of California (1982)
  7. D. Hall, 'The Use of Base Isolation and Energy-Absorbing Restrainers for the Seismic Protection of a Large Power Plant Component,' EPRI NP-2918, Electric Power Research Institute (1983)
  8. K. Ebisawa, K. Ando, and K. Shibata, 'Progress of a Research Program on Seismic Base Isolation of Nuclear Components,' Nucl. Eng. Des., 198, 1-2 (2000) https://doi.org/10.1016/S0029-5493(99)00272-1
  9. Y. N. Huang, A. S. Whittaker, M. C. Constantinou, and S. Malushte, 'Seismic Protection of Secondary Systems in Nuclear Power Plant Facilities,' Trans. 18th Int. Conf. on Structural Mechanics in Reactor Technology (SMiRT 18), Beijing, China, Aug. 7-12, 2005
  10. Y. S. Choun, I. K. Choi, and J. M. Seo, 'Improvement of Seismic Safety of Nuclear Power Plants by Increase of Equipment Seismic Capacity,' Proc. 13th World Conf. on Earthquake Engineering (WCEE 13), Vancouver, Canada, Aug. 1-6, 2004
  11. Y. S. Choun and I. K. Choi, 'Effect of the Seismic Capacity of Equipment on the Core Damage Frequency in Nuclear Power Plants,' Trans. 18th Int. Conf. on Structural Mechanics in Reactor Technology (SMiRT 18), Beijing, China, Aug. 7-12, 2005
  12. J. B. Evans, 'Vibration Control for a 25 MW Steam-Turbine Generator Installation near Academic Teaching and Research Laboratories,' Proc. 12th Int. Congress on Sound and Vibration, Lisbon, Portugal, July 11-14, 2005
  13. GERB Schwingungsisolierungen GmbH & Co. KG, Vibration Isolation Systems, 10th ed. (2000)
  14. G. K. Huffmann, 'Full Base Isolation for Earthquake Protection by Helical Springs and Viscodampers.' Nucl. Eng. Des., 84, 3 (1985)
  15. V. V. Kostarev, A. V. Petrenko, and P. S. Vasilyev, 'An Advanced Seismic Analysis of NPP Powerful Turbogenerator on Isolation Pedestal,' Trans. 18th Int. Conf. on Structural Mechanics in Reactor Technology (SMiRT 18), Beijing, China, Aug. 7-12, 2005
  16. S.S. Tezcan and A. Civi, 'Efficiency of Helical Springs and Viscodampers in Base Isolation,' Engrg. Struct., 14, 2 (1992) https://doi.org/10.1016/0141-0296(92)90002-8
  17. N. Makris and H.S. Deoskar, 'Prediction of Observed Response of Base-Isolated Structures,' J. Struct. Engrg., ASCE, 122, 5 (1996)
  18. N. Makris and M.C. Constantinou, 'Spring-Viscous Damper Systems for Combined Seismic and Vibration Isolation,' Earthquake Engrg. and Struct. Dyn., 21, 8 (1992)
  19. N. Makris and M.C. Constantinou, 'Fractional-Derivative Maxwell Model for Viscous Dampers,' J. Struct. Engrg., ASCE, 117, 9 (1991)
  20. N. Makris and M.C. Constantinou, 'Models of Viscoelasticity with Complex-Order Derivatives,' J. Engrg. Mech., ASCE, 119, 7 (1993)
  21. N. Makris, G.F. Dargush, and M.C. Constantinou, 'Dynamic Analysis of Generalized Viscoelastic Fluids,' J. Engrg. Mech., ASCE, 119, 8 (1993)
  22. N. Makris, M.C. Constantinou, and G.F. Dargush, 'Analytical Model of Viscoelastic Fluid Dampers,' J. Struct. Engrg., ASCE, 119, 11 (1993)
  23. N. Makris, G.F. Dargush, and M.C. Constantinou, 'Dynamic Analysis of Viscoelastic-Fluid Dampers,' J. Engrg. Mech., ASCE, 121, 10 (1995)
  24. I. K. Choi, Y. S. Choun, and J. M. Seo, 'Development of a Uniform Hazard Spectrum for a Soil Site by Considering the Site Soil Condition,' Trans. Korean Nuclear Society Spring Meeting, Gyeongju, Korea, May 27-28, 2004
  25. Korea Electric Power Research Institute, PSA Notebook for Yonggwang Units 5&6: External Event Analysis (2001)
  26. Korea Electric Power Corporation, Ulchin Units 3&4 Final Probabilistic Safety Assessment Report (1997)
  27. Korea Hydro & Nuclear Power Co., Probabilistic Safety Assessment for Ulchin Units 5&6 (Phase II): External Event Analysis (Final Report) (2002)
  28. Korea Electric Power Research Institute, Probabilistic Safety Assessment for Yonggwang Units 5&6: Level 1 PSA for Internal Events (2000)