[2F06-09] Fuel Debris 5

[2F07] Development of ultramicro analysis technology for fuel debris analysis

(19) Dissolution behaviors of uranium simulated debris by using alkaline fusion method

*ZhuoRan Ma¹, Hiroyuki Kazama³, Yoshiya Homma², Kenji Konashi², Tatsuya Suzuki¹ (1. Nagaoka Univ. of Tech., 2. Tohoku Univ., 3. JAEA)

Keywords: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.