Fast breeder reactor

Details Fast breeder reactor Fast breeder reactor

1985-02-21

1988-03-22

Behrend, Harvey E.

Induced nuclear reactions: processes, systems, and elements

Nuclear transmutation

By neutron bombardment

376352, 376365, G21C 1500

Patent

active

047327294

ABSTRACT:
In the fast breeder reactor according to this invention, a medium-pressure plenum and a high-pressure plenum are disposed, in the mentioned order from above in a reactor core. Sodium is filled in the medium- and high-pressure plenums. The pressure in the medium-pressure plenum is lower than that in the high-pressure plenum. The lower ends of the entrance nozzles of a multiplicity of fuel assemblies loaded in the reactor core are supported by a supporting plate which forms a boundary between the medium- and high-pressure plenums. The entrance nozzles of control rod guide pipes disposed among the multiplicity of fuel assemblies are also supported by said supporting plate. The sodium in the medium-pressure plenum is supplied into each control rod guide pipe through a first opening provided in the lateral surface of the entrance nozzle of each control rod guide pipe. The sodium in the high-pressure plenum is supplied into each fuel assembly from the lower end of the entrance nozzle of each fuel assembly through a second opening provided piercing through the supporting plate. The sodium in the high-pressure plenum is supplied to the medium-pressure plenum through a pressure-reducing orifice.

REFERENCES:
patent: 3235465 (1966-02-01), McDaniel et al.
patent: 3318777 (1967-05-01), Kervenoael et al.
patent: 3619367 (1971-11-01), Gumuchian
patent: 3736226 (1973-05-01), Sakurama
patent: 3892625 (1975-07-01), Patterson
patent: 3977439 (1976-08-01), Lambert
patent: 4352778 (1982-10-01), Arnaud et al.

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