[1I01-06] Fundamental property

[1I03] Partitioning of Cs and Mo in steam environment

*Thi Mai Dung Do¹, Supamard Sujatanond², Toru Ogawa³ (1. Nagaoka University of Technology, 2. Thammasat University, 3. Japan Atomic Energy Agency)

Keywords:Severe accident, CsOH, Cs2MoO4-MoO3, thermodynamics

The effect of steam on the partitioning of Cs and Mo was calculated at temperature ranging from 1200-2600 K was calculated at total pressures of 75 and 3.5 bar, which correspond to those before and after RPV depressurization. The reaction of Cs₂MoO₄ (g) with steam was better described by taking into account the participation of Cs₂Mo₂O₇.