Control rod drive

Details Control rod drive Control rod drive

1983-08-24

1986-05-06

Jordan, Charles T.

Induced nuclear reactions: processes, systems, and elements

Control component for a fission reactor

Fuse actuated devices

376219, 376232, 376234, 185 33, G21C 902

Patent

active

045870845

ABSTRACT:
A control rod drive uses gravitational forces to insert one or more control rods upwardly into a reactor core from beneath the reactor core under emergency conditions. The preferred control rod drive includes a vertically movable weight and a mechanism operatively associating the weight with the control rod so that downward movement of the weight is translated into upward movement of the control rod. The preferred control rod drive further includes an electric motor for driving the control rods under normal conditions, an electrically actuated clutch which automatically disengages the motor during a power failure and a decelerator for bringing the control rod to a controlled stop when it is inserted under emergency conditions into a reactor core.

REFERENCES:
patent: 685269 (1901-10-01), Fulton
patent: 971482 (1910-09-01), Anthony
patent: 1565031 (1925-12-01), Strout
patent: 3152960 (1964-10-01), Alfred
patent: 3980519 (1976-09-01), Taft
patent: 4073681 (1978-02-01), Glazar et al.
patent: 4221137 (1980-09-01), Futaba
Nuclear Energy Technology, McGraw-Hill Book Co., 1981, p. 308, Knief.

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