Reactor containment vessel

Details Reactor containment vessel Reactor containment vessel

1991-07-18

1992-09-22

Wasil, Daniel D.

Induced nuclear reactions: processes, systems, and elements

Reactor protection or damage prevention

Pressure suppression and relief

376299, G21C 1518

Patent

active

051494922

ABSTRACT:
A reactor containment vessel with a cooling system includes a communication pipe having a valve to be connected to either an emergency condenser or suppression chamber in order to improve cooling performance by removing non-condensable gas from heat exchanger tubes when a main steam line is broken. One open end of the communication pipe is opened and positioned at a low position of the dry well. The valve is constantly closed and actuated to be opened in an abnormal condition of a reactor. When the valve is opened, the communication pipe introduces the non-condensable gas existing in the emergency condenser or suppression chamber to the low area of the dry well due to a density differential between steam and non-condensable gas, thus removing the non-condensable gas from the heat exchanger tubes, and improving the cooling performance of the emergency condenser.

REFERENCES:
patent: 5082619 (1992-01-01), Sawyer
patent: 5091144 (1992-02-01), Dillmann et al.
McCandless, R. J. et al., "Simplicity: the key to improved safety, performance and economics," Nuclear Engineering International, Nov., 1989.
Rao, A. S. et al., "SBWR Thermal Hydraulic Performance Analyses and Testing," Fifth Proc. of Nuclear Thermal Hydraulics, ANS Winter Meeting, Nov., 1989.
Otonari, J., Arai, K., et al., "Evaluation of Passive Containment Cooling System Performance for Simplified BWR," Fifth Proc. of Nuclear Thermal Hydraulics, ANS Winter Meeting, Nov., 1989.

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