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タイトル
和文: 
英文:Simulation Study on CANDLE Burnup Applied To Block-Type High Temperature Gas Cooled Reactor 
著者
和文: Yasunori Ohoka, Takashi Watanabe, 関本 博.  
英文: Yasunori Ohoka, Takashi Watanabe, Hiroshi Sekimoto.  
言語 English 
掲載誌/書名
和文: 
英文:Progress in Nucl. Energy 
巻, 号, ページ Vol. 47    No. 1-4    pp. 292-299
出版年月 2005年 
出版者
和文: 
英文: 
会議名称
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開催地
和文: 
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DOI https://doi.org/10.1016/j.pnucene.2005.05.028
アブストラクト The CANDLE burnup is a new reactor burnup concept, where the distributions offuel nuclide densities, neutron flux, and power density move with the same constantspeed along the core axis from bottom to top (or from top to bottom) of the core andwithout any change in their shapes. It can be applied easily to a block-type hightemperature gas cooled reactor (HTGR) using an appropriate burnable poison witha high neutron absorption cross section mixed with uranium oxide fuel. In this study,natural gadolinium is used as burnable poison. In the present paper, the simulationof the burnup for the steady state and the startup is performed.For the steady state simulation with direct solutions of steady state nuclidedensities as inputs, the difference between the results of the steady state analysisand the simulation analysis is very small. It confirms that the steady state analysis iscorrect. When the initial core is constructed from easily available nuclides, thesimulation result gives a reactivity change of 1.7% at a burnup time of 0.7 years.© 2005 Elsevier Ltd. All rights reserved

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