10:30 AM - 10:45 AM
[2J04] Development of out of pile test equipment to simulate the dispersal and accumulation behavior of fuel fragments under FFRD condition
Keywords:FFRD, fuel fragmentation, fuel dispersal , fragments accumulation, core coolability, high burnup fuel, LOCA
FFRD (Fuel Fragmentation, Relocation and Dispersal)has been widely discussed as one of safety issues for high burnup fuel under LOCA condition. The whole phenomena in reactor core is still unclear, and knowledge and experimental data concerning the effect of expelled fuel fragments on core coolability are insufficient.
In this study, we developed test equipment that enables us to obtain the data concerning the dispersal and the accumulation of fuel fragments on the grid under FFRD condition by means of unirradiated 17×17 PWR full-sized bundle system. This presentation reports the overview and the results of performance verification test of the test equipment.
In this study, we developed test equipment that enables us to obtain the data concerning the dispersal and the accumulation of fuel fragments on the grid under FFRD condition by means of unirradiated 17×17 PWR full-sized bundle system. This presentation reports the overview and the results of performance verification test of the test equipment.