Release behavior of fission gas from coated fuel particles under irradiation.
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概要
- 論文の詳細を見る
TRISO coated fuel particles for HTGR were irradiated by two sweep gas capsules in order to study the release behavior of the fission gas and try to predict the failure fraction of the particles on the basis of the measurement. For verification of the predicted failure fraction, post irradiation examination was conducted, and failure fraction in a visual inspection and acid leaching fraction were measured. Agreement between the predicted failure fraction and the acid leaching fraction was good for these samples except one. From the release behavior from the intact particles, in-pile diffusion coefficients of Kr in LTI-PyC were estimated and expressed as<BR><I>D</I>=(2.96.0)×10<SUP>-4</SUP>exp(-2.55×10<SUP>5</SUP>/<I>RT</I>) cm<SUP>2</SUP>/s<BR>where <I>R</I> is the gas constant (=8.314 J/K) and <I>T</I> the absolute temperature. It was recognized that the release from failed particles was controlled by diffusion at 1, 600°C and that from intact particles, predominantly by recoil at 1, 400°C.
- 一般社団法人 日本原子力学会の論文
著者
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IKAWA Katsuichi
Division of Nuclear Fuel Research, Japan Atomic Energy Research Institute
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FUKUDA Kousaku
Division of Nuclear Fuel Research, Japan Atomic Energy Research Institute
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OGAWA Touru
Division of Nuclear Fuel Research, Japan Atomic Energy Research Institute
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KASHIMURA Satoru
Division of Nuclear Fuel Research, Japan Atomic Energy Research Institute
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IWAMOTO Kazumi
Division of Nuclear Fuel Examination, JAERI
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YAMAMOTO Katsumune
Division of JMTR Project, JAERI
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ITOH Tadaharu
Division of Research Reactor Operation, JAERI
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MATSUSHIMA Hideo
Division of Research Reactor Operation, JAERI
関連論文
- Coating failure of VHTR reference fuel by irradiation.
- Release behavior of fission gas from coated fuel particles under irradiation.
- Behavior of iodine-131 during rinsing in-pile loop with demineralized water after fission product release experiment.
- Young's Moduli of Compact Matrices for HTGR Fuel
- Strength of silicon-carbide coating layers of fuel particles for high temperature gas-cooled reactors.