[1C01-04] Severe Accident

[1C04] Development of out of pile experimental method for evaluating the effect of dispersed fuel fragments on the fuel coolability under FFRD condition

*Koichi Ogata¹, Yasunari Shinohara¹, Yuki Shimizu¹, Masaaki Yamato² (1. NDC, 2. MHI)

Keywords:FFRD, fuel fragmentation, fuel dispersal, accumulation of fuel fragments, core coolability, high burnup fuel, LOCA

In order to study FFRD (Fuel Fragmentation, Relocation and Dispersal), we developed an out of pile experimental method that can simulate an accumulation of fuel fragments on the fuel grid and obtain the data concerning the effect of expelled fuel fragments to core coolability using PWR 3x3 fuel rod bundle system.