Induced nuclear reactions: processes – systems – and elements – Reactor protection or damage prevention – Fluid flow reversal protection
Patent
1980-09-22
1983-01-04
Walsh, Donald P.
Induced nuclear reactions: processes, systems, and elements
Reactor protection or damage prevention
Fluid flow reversal protection
376282, 376372, 376402, G21C 900
Patent
active
043671942
ABSTRACT:
A liquid metal cooled fast breeder reactor provided with an emergency core cooling system includes a reactor vessel which contains a reactor core comprising an array of fuel assemblies and a plurality of blanket assemblies. The reactor core is immersed in a pool of liquid metal coolant. The reactor also includes a primary coolant system comprising a pump and conduits for circulating liquid metal coolant to the reactor core and through the fuel and blanket assemblies of the core. A converging-diverging venturi nozzle with an intermediate throat section is provided in between the assemblies and the pump. The intermediate throat section of the nozzle is provided with at least one opening which is in fluid communication with the pool of liquid sodium. In normal operation, coolant flows from the pump through the nozzle to the assemblies with very little fluid flowing through the opening in the throat. However, when the pump is not running, residual heat in the core causes fluid from the pool to flow through the opening in the throat of the nozzle and outwardly through the nozzle to the assemblies, thus providing a means of removing decay heat.
REFERENCES:
patent: 3425907 (1969-02-01), Bonsel
patent: 3912584 (1975-10-01), Rubinstein
patent: 4033814 (1977-07-01), Bregeon
patent: 4035231 (1977-07-01), Ventre
patent: 4280796 (1981-07-01), Reinsch
patent: 4293385 (1981-10-01), Brachet
Glasgow Lyle E.
Schenewerk William E.
The United States of America as represented by the United States
Walsh Donald P.
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