[1E04-05] Debris Treatment and Cesium Deposition

[1E04] Chlorination of Uranium Oxides - containing Substances by Thermochemical Reaction

*ZhuoRan Ma¹, Tadao YATO², Yoshiya HOMMA², Kenji Konashi², Tatsuya Suzuki¹ (1. Nagaoka Univ. of Tech, 2. Tohoku Univ.)

Keywords:Actinide analysis, Uranium oxides, Nuclear debris, Chemical conversion, Pretreatment

The dissolution of nuclear fuel debris is necessary for the accurate and precise analyses of nuclides. We have proposed the chemical conversion of insoluble nuclear fuel debris into soluble substances by thermochemical reaction. In the present work, the chlorination behaviors of UO₂, U₃O₈, simulated nuclear debris including UO₂ or U₃O₈ by themochemical reaction using CCl₄ were studied, and the converted substances were analyzed by XRD. We found that these substances can be chlorinated at 300℃.