Phase state estimation of metallic inclusions in simulated corium debris

Akashi, Masatoshi ; Morimoto, Kyoichi

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.

Language	:	English
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Meeting title	:	Nuclear Materials Conference 2016 (NuMat 2016)
Held date	:	2016/11
Location (city)	:	Montpellier
Location (country)	:	France
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Keywords	:	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
Research Facility	:	プルトニウム燃料製造施設
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Registration No. : BB20160310
JAEA Abstracts No. :
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