Induced nuclear reactions: processes – systems – and elements – Control component for a fission reactor – Particulate type
Patent
1980-04-28
1982-08-10
Behrend, Harvey E.
Induced nuclear reactions: processes, systems, and elements
Control component for a fission reactor
Particulate type
G21C 716
Patent
active
043437648
ABSTRACT:
The nuclear reactor control column comprises a column disposed within the nuclear reactor core having a variable cross-section hollow channel and containing balls whose vertical location is determined by the flow of the reactor coolant through the column. The control column is divided into three basic sections wherein each of the sections has a different cross-sectional area. The uppermost section of the control column has the greatest cross-sectional area, the intermediate section of the control column has the smallest cross-sectional area, and the lowermost section of the control column has the intermediate cross-sectional area. In this manner, the area of the uppermost section can be established such that when the reactor coolant is flowing under normal conditions therethrough, the absorber balls will be lifted and suspended in a fluidized bed manner in the upper section. However, when the reactor coolant flow falls below a predetermined value, the absorber balls will fall through the intermediate section and into the lowermost section, thereby reducing the reactivity of the reactor core and shutting down the reactor.
REFERENCES:
patent: 3192123 (1965-06-01), Costes et al.
patent: 3228847 (1966-01-01), Parkinson et al.
patent: 3287910 (1966-11-01), Silverstein
patent: 3347747 (1967-10-01), West et al.
patent: 3660231 (1972-05-01), Fox et al.
patent: 4120753 (1978-10-01), Malaval
"Fluidization & Fluid-Particle Systems", Reinhold Pub. Corp., N.Y., Zenz et al., pp. 41-44, (1960).
Behrend Harvey E.
DePaul L. A.
The United States of America as represented by the United States
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