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Title: Passive containment cooling system

A passive containment cooling 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 and is vented to the drywell. An isolation pool is disposed above the GDCS pool and includes an isolation condenser therein. The condenser has an inlet line disposed in flow communication with the drywell for receiving the non-condensable gas along with any steam released therein following a loss-of-coolant accident (LOCA). The condenser also has an outlet line disposed in flow communication with the drywell for returning to the drywell both liquid condensate produced upon cooling of the steam and the non-condensable gas for reducing pressure within the containment vessel following the LOCA.
 [1];  [1];  [1]
  1. (San Jose, CA)
Issue Date:
OSTI Identifier:
General Electric Company (San Jose, CA) OAK
Patent Number(s):
US 5282230
Contract Number:
Research Org:
General Electric Co
Country of Publication:
United States
passive; containment; cooling; vessel; surrounding; reactor; pressure; defining; drywell; therein; containing; non-condensable; gas; enclosed; wetwell; pool; disposed; inside; gravity; driven; gdcs; vented; isolation; condenser; inlet; line; flow; communication; receiving; steam; released; following; loss-of-coolant; accident; loca; outlet; returning; liquid; condensate; produced; reducing; gdcs pool; inlet line; outlet line; isolation condenser; wetwell pool; reactor pressure; containment vessel; pressure vessel; flow communication; containment cooling; passive containment; disposed inside; non-condensable gas; therein containing; isolation pool; steam released; vessel surrounding; gravity driven; enclosed wetwell; driven cooling; liquid condensate; drywell therein; coolant accident; /376/