Thermochemical Prediction of Chemical Form Distributions of Fission Products in LWR Oxide Fuels Irradiated to High Burnup.
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- MORIYAMA Kouki
- Department of Nuclear Engineering, Faculty of Engineering, Kyushu University
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- FURUYA Hirotaka
- Department of Nuclear Engineering, Faculty of Engineering, Kyushu University
Bibliographic Information
- Other Title
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- Thermochemical Prediction of Chemical F
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Abstract
<BR>Based on the result of micro-gamma scanning of a fuel pin irradiated to high burnup in a commercial PWR, the radial distribution of chemical forms of fission products (FPs) in LWR fuel pins was theoretically predicted by a thermochemical computer code SOLGASMIX-PV. The absolute amounts of fission products generated in the fuel was calculated by ORIGEN-2 code, and the radial distributions of temperature and oxygen potential were calculated by taking the neutron depression and oxygen redistribution in the fuel into account. <BR>A fuel pellet was radially divided into 51 sections and chemical forms of FPs were calculated in each section. In addition, the effects of linear heat rating (LHR) and average O/U ratio on radial distribution of chemical form were evaluated. <BR>It was found that approximately 13mole% of the total amount of Cs compounds exists as CsI and virtually remaining fraction as Cs2MoO4 under the operation condition of LHR below 400W/cm. On the other hand, when LHR is beyond 400W/cm under the transient operation condition, its distribution did not change so much from the one under normal operation condition.
Journal
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- Journal of Nuclear Science and Technology
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Journal of Nuclear Science and Technology 34 (9), 900-908, 1997
Atomic Energy Society of Japan
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Details
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- CRID
- 1390001204095800064
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- NII Article ID
- 10002078068
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- NII Book ID
- AA00703720
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- COI
- 1:CAS:528:DyaK2sXnt1ags7c%3D
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- ISSN
- 18811248
- 00223131
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- NDL BIB ID
- 4307551
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed