Seismic Isolation Design for JSFR

This paper describes the seismic design of Japan Sodium-Cooled Fast Reactor (JSFR), which includes the seismic condition, the seismic isolation system, and the seismic evaluation of the primary components. Since the design seismic loading is set out severely than ever since The Niigata-ken Chuetsu-o...

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Bibliographic Details
Published in:Journal of nuclear science and technology 2011-04, Vol.48 (4), p.688
Main Authors: OKAMURA, Shigeki, KAMISHIMA, Yoshio, NEGISHI, Kazuo, SAKAMOTO, Yoshihiko, KITAMURA, Seiji, KOTAKE, Shoji
Format: Article
Language:English
Subjects:
Design engineering
Earthquake dampers
Earthquake design
Isolation systems
Nuclear engineering
Nuclear reactor components
Seismic engineering
Seismic phenomena
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Summary:This paper describes the seismic design of Japan Sodium-Cooled Fast Reactor (JSFR), which includes the seismic condition, the seismic isolation system, and the seismic evaluation of the primary components. Since the design seismic loading is set out severely than ever since The Niigata-ken Chuetsu-oki Earthquake in 2007, an advanced seismic isolation system is aimed to reduce the seismic force loaded on the primary components of JSFR to be less than that of the previous seismic isolation system. The advanced seismic isolation system is developed by optimizing the performance based on the previous seismic isolation system considering the natural frequency of the primary components. The laminated rubber bearings thicker than the previous ones and oil dampers are adopted for the advanced seismic isolation system of SFR. The seismic evaluation of nuclear reactor components applying the advanced seismic isolation system is performed and its feasibility is confirmed.
ISSN:0022-3131
1881-1248
DOI:10.3327/jnst.48.688