Extension of core life-time in fast breeder reactor by introducing inner blanket and doping minor actinides

► Effect of a fertile material of MA which transmuted to 238Pu in a FBR was studied. ► The radial inner blanket was arranged at the center of the FBR core. ► If MA is doped into the inner blanket, the long-life core can be achieved. ► The main fission reaction zone is shifted from the active core to the inner blanket. ► 238Pu worked as a fissile material enabled the long-life core.