[1D01-05] Chemistry of Cesium

[1D05] Study on the influence of microorganism on fuel debris degradation

(1)Disintegration of simulant fuel debris by widespread bacteria

*Jiang LIU¹, Yuma DOTSUTA¹, Toru KITAGAKI¹, Naofumi KOZAI¹, Toshihiko OHNUKI^1,2 (1. Japan Atomic Energy Agency, 2. Tokyo Institute of Technology, Laboratory for Advanced Nuclear Energy)

Keywords:fuel debris, microorganism, corrosion mechanism

After severe accident, some microorganisms have been found coexisting with damaged fuel debris in nuclear power plant. It is accepted that the microbial reaction might affect fuel debris, such as degradation and dissolution into water. By batch culture of widespread bacteria with simulant fuel debris, it was found that these bacteria would promote the disintegration of fuel debris in this study.