DEVICE FOR MITIGATION OF SERIOUS ACCIDENTS FOR ASSEMBLY OF NUCLEAR FUEL WITH IMPROVED EFFICIENCY

摘要

Passive safety device (104) designed to be placed near the top of a nuclear fuel assembly (102), comprising: a neutron-absorbing material and a material capable of forming a low melting point eutectic with the material forming the cladding of the nuclear fuel rods (8) in the assembly (102), and fused means (28) to retain said materials in the high position in the assembly (102).