Preliminary Design for a Dual Purpose Cask Containing 12, 18, or 19 Spent Fuel Assemblies of Bushehr Nuclear Power Plant

The Bushehr nuclear power plant with annual spent fuel production of 21 tons of heavy metals is under commercial operation since 2013. A recently developed dual purpose cask for the dry interim storage and transportation of the spent fuel assemblies of Bushehr nuclear power plant are presented. To design of the fuel basket, materials of borated steel and borated aluminum (BORAL) with different boron content were considered. For the external neutron shielding of the DPC, solid materials such as borated polyethylene were taken into account instead of liquid ones such as ethylene glycol mixed with water.