[2P18-21] Source Term

[2P19] Effects of Boron on the chemical behavior of Cesium and Iodine in the Reactor Coolant System condition during LWR severe accident

(1) Evaluation of chemical bahavior of cesium iodide under steam condition

*Naoya Miyahara¹, Shuhei Miwa¹, Melany Gouello², Masahiko Osaka¹ (1. JAEA, 2. VTT)

Keywords:Fission Product, Chemistry, Cesium iodide, Boron, Reactor coolant system

Chemical behavior of cesium iodide (CsI) under steam condition was investigated by a reproductive experiment of the CsI transpot behavior in Reactor Coolant System. The results show that Cs compounds other than CsI and gaseous iodine was formed as a result of chemical reactions of CsI with steam.