Pressure suppression containment system

Details Pressure suppression containment system Pressure suppression containment system

1993-04-15

1994-03-15

Wasil, Daniel D.

Induced nuclear reactions: processes, systems, and elements

Reactor protection or damage prevention

Pressure suppression and relief

G21C 1518

Patent

active

052951685

ABSTRACT:
A pressure suppression containment system includes a containment vessel surrounding a reactor pressure vessel and defining a drywell therein containing a non-condensable gas. An enclosed wetwell pool is disposed inside the containment vessel, and a gravity driven cooling system (GDCS) pool is disposed above the wetwell pool in the containment vessel. The wetwell pool includes a plenum for receiving the non-condensable gas carried with steam from the drywell following a loss-of coolant-accident (LOCA). The wetwell plenum is vented to a plenum above the GDCS pool following the LOCA for suppressing pressure rise within the containment vessel. A method of operation includes channeling steam released into the drywell following the LOCA into the wetwell pool for cooling along with the non-condensable gas carried therewith. The GDCS pool is then drained by gravity, and the wetwell plenum is vented into the GDCS plenum for channeling the non-condensable gas thereto.

REFERENCES:
patent: 5008069 (1991-04-01), Fredell
patent: 5059385 (1991-10-01), Gluntz et al.
patent: 5082619 (1992-01-01), Sawyer
patent: 5096659 (1992-03-01), Hidaka et al.
patent: 5102617 (1992-04-01), Gluntz et al.
patent: 5169595 (1992-12-01), Cooke
GE Nuclear Energy, "SBWR Technical Description for NRC Staff Presentation," Dec. 1989, pp. cover; 1.0-1; 1.2-16, 17, 19, 20 & 28; 2.3-1 thru 11, 15-18; 2.6-14 & 42.

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