Phase state estimation of metallic inclusions in simulated corium debris

模擬デブリに含まれる金属介在物の相状態評価

Corium debris which was generated as a result of core meltdown has non-uniform structure consisting of nuclear fuel and other core component material. In this study, samples of simulated corium debris were prepared from (U $_{0.46}$ Pu $_{0.04}$ Zr $_{0.50}$ )O $_{2}$ and Fe $_{2}$ Zr through the powder mixing, compaction, melt and solidified process to observe the phase state of the samples. The result of elementary analysis showed that it consists of three phases such as Fe metal, Fe-Zr arroy and (U,Pu,Zr)O $_{2}$ . The Fe and Fe-Zr existed as metallic inclusions of 5 m in mean diameter in the samples.

使用言語	:	English
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発表会議名	:	Nuclear Materials Conference 2016 (NuMat 2016)
開催年月	:	2016/11
開催都市	:	Montpellier
開催国	:	France
キーワード	:	simulated corium; metallic inclusion; phase state estimation; 福島第一原子力発電所事故; Fukushima Daiichi Nuclear Power Station Accident

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