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Takase, Kazuyuki; Yoshida, Hiroyuki; Ose, Yasuo*; Akimoto, Hajime
Proceedings of 2005 ASME International Mechanical Engineering Congress and Exposition (CD-ROM), 8 Pages, 2005/11
no abstracts in English
Nagashima, Hedeaki; Shibamoto, Hiroshi; Inoue, Kazuhiko; kasahara, Naoto; Sadahiro, Daisuke*
Proceedings of 2005 ASME International Mechanical Engineering Congress and Exposition (CD-ROM), 0 Pages, 2005/08
Focusing on the cover layer materials (as the Radon Barrier Materials), which could have the effect to restrain the radon from scattering into the air and the effect of the radiation shielding, we produced the radon barrier materials with crude bentonite on an experimental basis, using the rotary type comprehensive unit for grinding and mixing, through which we carried out the evaluation of the characteristics thereof.
Shibamoto, Hiroshi; Nagashima, Hedeaki; Inoue, Kazuhiko; Kasahara, Naoto; Jimbo, Masakazu*; Furuhashi, Ichiro*
Proceedings of 2005 ASME International Mechanical Engineering Congress and Exposition (CD-ROM), 0 Pages, 2005/08
Focusing on the cover layer materials (as the Radon Barrier Materials), which could have the effect to restrain the radon from scattering into the air and the effect of the radiation shielding, we produced the radon barrier materials with crude bentonite on an experimental basis, using the rotary type comprehensive unit for grinding and mixing, through which we carried out the evaluation of the characteristics thereof.
Kasahara, Noto; Kimura, Nobuyuki; Kamide, Hideki
Proceedings of 2005 ASME International Mechanical Engineering Congress and Exposition (CD-ROM), 0 Pages, 2005/08
None
Kitamura, Seiji; Shigeki, Okamura; Kenji, Takahashi
Proceedings of 2005 ASME International Mechanical Engineering Congress and Exposition (CD-ROM), 0 Pages, 2004/07
Several kinds of three-dimensional seismic isolation system for next-generation nuclear power plant such as fast reactors have been studied in recent years. We proposed a structural concept of a vertical component isolation system, assuming a building adopting a horizontal base isolation system. In this concept, a reactor vessel and major primary components are suspended from a large common deck supported by isolation devices consisting of large coned disk springs. In order to verify the isolation performance of the vertical component isolation system, 1/8 series of shaking table tests using a scale model were conducted. The test model was composed of 4 vertical isolation devices, common deck and horizontal load suspension system. For the design earthquake, the system smoothly operated, and sufficient isolation characteristics were shown. The simulation analysis results matched well the test results, so the validity of the design technique was able to be verified. As the result, the prospect that the vertical isolation system applied to the FBR plant could technically realize was obtained.