Simulation of Boil-off Scenarios in Spent Fuel Pools

The thermo-hydraulic analysis of Spent Fuel Pool accident scenarios is predominantly carried out using one-dimensional codes, based on simplified assumptions for the flow paths around the storage racks and inside the reactor building. Here, CFD is employed to investigate these convective phenomena in order to study their relevance for the cooling of the individual fuel assemblies. A partial exposure of the fuel assemblies is anticipated.