FAST-NEUTRON REACTOR CORE WITH IMPROVED CONFIGURATION

摘要

The present invention relates to a configuration of a liquid-metal-cooled fast-neutron reactor core. The core comprises an assembly of fuel elements comprising a fertile material and/or a fissile material, the assembly of such fuel elements being arranged in the general form of a cylinder. In the context of the invention, a first assembly of fuel elements (C1, C2, C3), arranged in a ring around the periphery of the cylinder, comprises relatively more fissile material than a second assembly of fuel elements (FERT), which is placed at the centre of the cylinder. Such an arrangement advantageously enables a liquid metal draining effect to be reduced and thereby improves the safety of the reactor.