Induced nuclear reactions: processes – systems – and elements – With control of reactor – By movement of control element or by release of neutron...
Patent
1992-07-02
1995-04-11
Walsh, Donald P.
Induced nuclear reactions: processes, systems, and elements
With control of reactor
By movement of control element or by release of neutron...
376353, 376230, 376370, G21C 706
Patent
active
054065976
ABSTRACT:
A boiling water reactor includes a pressure vessel containing a reactor core, chimney, steam separator assembly, and steam dryer assembly therein, with the vessel being filled with reactor water to a normal water level through the steam separator assembly. A plurality of control rod drives extend downwardly from the bottom of the pressure vessel and are operatively joined to control rods extending downwardly into the reactor core. The chimney includes a plurality of channels disposed above the core and laterally spaced apart to define guide slots for receiving the control rods as they are selectively translated upwardly out of the core by the control rod drives. The chimney has a vertical height for increasing the normal water level above the reactor core and for providing a space for the control rods withdrawn from the reactor core by the bottom-mounted control rod drives. The control rods are selectively withdrawn upwardly from the core and inserted downwardly into the core by the control rod drives, which also are effective for selectively releasing the control rods for allowing gravity to insert the control rods into the core.
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Challberg Roy C.
Dillmann Charles W.
Fawcett Russell M.
Fennern Larry E.
Hucik Steven A.
General Electric Company
McGinness J. E.
Voss Frederick H.
Walsh Donald P.
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