NUCLEAR ROD, NUCLEAR FUEL ASSEMBLY AND FAST REACTOR USING THE SAME

摘要

The present invention relates to a nuclear fuel rod, a nuclear fuel assembly, and a fast reactor using the same. The present invention comprises: a nuclear fuel module which is filled with nuclear fuel slug inside, wherein a cladding tube is formed on the outer circumference surface thereof and liquid metal is filled between the nuclear fuel slug and cladding tube for a thermal bonding between the nuclear fuel slug and cladding tube; a plenum part, formed on the upper side of the nuclear fuel module, into which a gas product generated during nuclear fission flows; a shielding part disposed on the lower part of the nuclear fuel module to prevent the damage to the nuclear fuel module when a fast neutron is irradiated; and an upper reflector which is disposed on the upper part of the nuclear fuel module and has a passage for the liquid metal and the gas product generated during nuclear fission. The upper reflector is formed inside the cladding tube and provides the passage through which the liquid metal and the generated gas product move during nuclear fission.