Water quality control at primary cooling system of crud concentration suppressed boiling water reactor. II Evaluation of cobalt-58 behavior in iron crud suppressed BWR.:Evaluation of Cobalt-58 Behavior in Iron Crud Suppressed BWR
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概要
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A possible accumulation mechanism of Ni and radioactive <SUP>58</SUP>Co ions in the reactor water of a low iron crud concentration plant was modeled based on a direct deposition of Ni ion on fuel cladding surfaces as a form of NiO, followed by the solid phase reaction between NiO and iron crud (α-Fe<SUB>2</SUB>O<SUB>3</SUB>) to produce NiFe<SUB>2</SUB>O<SUB>4</SUB>.<BR>The calculated results agreed satisfactorily with measurements in the first Japanese standard BWR, Fukushima 2-2 (1, 100 MWe), These calculations showed that controlling the Fe/Ni corrosion products ratio in the feed water to a value larger than 2 was effective to suppress <SUP>58</SUP>Co activity in the reactor water as well as Ni ion concentration.
- 一般社団法人 日本原子力学会の論文
著者
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Uchida Shunsuke
Energy Research Laboratory Hitachi Ltd.
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Ohsumi Katsumi
Hitachi Works Hitachi Ltd.
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Asakura Yamato
Energy Research Laboratory Hitachi Ltd.
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ASAKURA Yamato
Energy Research Laboratory, Hitachi, Ltd.
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NAGASE Makoto
Energy Research Laboratory, Hitachi Ltd.
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MIKI Minoru
Hitachi Works, Hitachi, Ltd.
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