Liquid metal cooled fast breeder nuclear reactors

Details Liquid metal cooled fast breeder nuclear reactors Liquid metal cooled fast breeder nuclear reactors

1978-11-28

1980-05-13

Behrend, Harvey E.

176 40, 176 61, G21C 1500

Patent

active

042027268

ABSTRACT:
A liquid metal cooled fast breeder nuclear reactor of the kind wherein the fuel assembly is submerged in a pool of liquid metal coolant in a primary vessel which is housed in a concrete vault. The fuel assembly, which comprises a multiplicity of elongate fuel pins, is sub-divided into a plurality of elongate sub-assembly constructions which upstand side-by-side. The fuel assembly has an inner zone comprised mainly of fissile material and a surrounding outer zone comprised mainly of breeder material. The sub-assemblies in the outer zone include electro-magnetic braking devices for regulating the flow of coolant through the sub-assemblies and the magnetic fields of the electro-magnetic braking devices are temperature sensitive being arranged so that as the power output of the breeder sub-assemblies increases the electro-magnetic resistance to coolant flow is reduced thereby maintaining the temperature of the coolant outlets from the sub-assemblies substantially constant.

REFERENCES:
patent: 3208913 (1965-09-01), Hennig
patent: 3971698 (1976-07-01), Wolff et al.
patent: 4032398 (1977-06-01), Cross et al.

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