11:05 〜 11:20
[2F07] Development of ultramicro analysis technology for fuel debris analysis
(19) Dissolution behaviors of uranium simulated debris by using alkaline fusion method
キーワード：simulated nuclear fuel debris, alkali fusion, uranium
Alkaline fusion method is considered to be a method that can efficiently dissolve nuclear fuel debris containing uranium-zirconium solid solutions from the Fukushima Daiichi Nuclear Power Station. The purpose of this study is to explore the dissolution behavior of simulated nuclear fuel debris in 6mol/L nitric acid and hydrochloric acid under the alkali fusion method. This report presents the experimental results using the simulated nuclear fuel debris with a molar ratio 0.65U, 0.10Zr, 0.10Fe, 0.05Gd, 0.05Nd and 0.05Si. The simulated nuclear fuel debris were sintered at 1350℃ for 10 mins with Ar and 5 percentage H2 condition.
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