Gas-cooled nuclear reactor plant with a heat exchanger for remov

Details Gas-cooled nuclear reactor plant with a heat exchanger for remov Gas-cooled nuclear reactor plant with a heat exchanger for remov

1991-09-13

1993-11-23

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

Reactor protection or damage prevention

Emergency core coolant systems

376298, 376381, G21C 1518

Patent

active

052651347

ABSTRACT:
If an emergency arises in gas-cooled nuclear reactor plants having a heat exchanger for removing afterheat due to failure of a blower, the afterheat can be only inadequately removed because of the many deflections and restrictions in a primary circulation loop. In order to achieve adequate removal of afterheat solely on the basis of natural draught, a heat exchanger is located above a top reflector and reaches across a part of coolant gas bores in the top reflector. During normal operation of the nuclear reactor plant, there is a flow of cold gas through the heat exchanger in the direction toward the reactor core and in the event of an emergency, there is a flow of hot gas in a direction out of the center of the core of the reactor. A natural draught coolant circulation is established with the return of the cooled gas through the coolant gas bores in the top reflector.

REFERENCES:
patent: 4066499 (1978-01-01), Buthmann
patent: 4642214 (1987-02-01), Zhong
patent: 4689194 (1987-08-01), Wachholz et al.
patent: 4728492 (1988-03-01), Schoening

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