Behavior of YSZ based Rock-Like Oxide Fuels under Simulated RIA Conditions
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概要
- 論文の詳細を見る
Pulse irradiation tests of three types of rock-like oxide (ROX) fuel, i.e. yttria stabilized zirconia (YSZ:ZrO2+Y2O3) single phase, finely mixed two phase composite of YSZ and spinel (MgAl2O4), and the other composite of larger YSZ particles dispersed in spinel matrix, were conducted in the NSRR to investigate their behavior under reactivity-initiated accident (RIA) conditions. The ROX fuel has been developed as an option for utilizing and disposing excess plutonium efficiently in an inert matrix. Owing to their lower melting temperatures than that of UO2, melting of ROX fuel occurred while the cladding was still solid and intact in the accident conditions. Therefore, consequence of the ROX fuel failure was quite different from that of UO2 fuel. When the ROX fuels failed, a considerable amount of the molten fuel was released out to the surrounding coolant water. In spite of the release, no significant mechanical energy generation due to fuel/coolant thermal interaction was observed in the tested enthalpy range below 12 GJ/m3. In terms of the failure threshold, on the other hand, the ROX fuels failed at fuel volumetric enthalpies above 10 GJ/m3, which was comparable to that of UO2 fuel.
- 社団法人 日本原子力学会の論文
- 2003-01-25
著者
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SASAJIMA Hideo
Japan Atomic Energy Agency
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Nakamura T
Japan Atomic Energy Res. Inst. (jaeri) Ibaraki
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YAMASHITA Toshiyuki
Department of Hygienic Chemistry, Faculty of Pharmaceutical Sciences Hokkaido University
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Uetsuka Hiroshi
Surface Chemistry Laboratory Kanagawa Academy Of Science And Technology Ksp East 404
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Uetsuka Hiroshi
Japan Atomic Energy Research Institute
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Uetsuka Hiroshi
Institute Of Materials Science University Of Tsukuba
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Uetsuka Hiroshi
Department Of Reactor Safety Research Japan Atomic Energy Research Institute
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NAKAMURA Takehiko
Department of Reactor Safety Research, Japan Atomic Energy Research Institute
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SASAJIMA Hideo
Department of Reactor Safety Research, Japan Atomic Energy Research Institute
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KUSAGAYA Kazuyuki
Global Nuclear Fuel-Japan Co. , Ltd.
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Uetsuka H
Department Of Reactor Safety Research Japan Atomic Energy Research Institute
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Yamashita Toshiyuki
Department Of Nuclear Energy System Japan Atomic Energy Research Institute
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Nakamura Takehiko
Department Of Reactor Safety Research Japan Atomic Energy Research Institute
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Nakamura Takehiko
Department Of Dermatology Kumamoto National Hospital
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Kusagaya Kazuyuki
Global Nuclear Fuel-japan Co. Ltd.
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Yamashita Toshiyuki
Department Of Hygienic Chemistry Faculty Of Pharmaceutical Sciences Hokkaido University
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UETSUKA Hiroshi
Department of Fuel Safety Research, Japan Atomic Energy Research Institute
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