Passive containment cooling system

Details Passive containment cooling system Passive containment cooling system

1989-04-21

1991-09-17

Wasil, Daniel D.

Induced nuclear reactions: processes, systems, and elements

Reactor protection or damage prevention

Shield or barrier between radiation or heat source and...

376299, 376305, 376900, G21C 1300

Patent

active

050493531

ABSTRACT:
A containment cooling system utilizes a naturally induced air flow and a gravity flow of water over the containment shell which encloses a reactor core to cool reactor core decay heat in two stages. When core decay heat is greatest, the water and air flow combine to provide adequate evaporative cooling as heat from within the containment is transferred to the water flowing over the same. The water is heated by heat transfer and then evaporated and removed by the air flow. After an initial period of about three to four days when core decay heat is greatest, air flow alone is sufficient to cool the containment.

REFERENCES:
patent: 3168445 (1965-02-01), Ziegler et al.
patent: 3207671 (1965-09-01), Kornbichler
patent: 3666616 (1972-05-01), Schluderberg
patent: 3929567 (1975-12-01), Schabert et al.
patent: 4753771 (1988-06-01), Conway et al.
"Small LMR Cuts Costs and Boosts Safety", NEI, 11/87.
"Enhanced Safety Planned for RBMK and VVER", Nuclear News, 5/88.
S. N. Tower et al., Passive and Simplified Features for the Advanced Westinghouse 600 MWe PWR, 1987, pp. 1-10, Westinghouse Electric Corp., Pittsburgh, PA.

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