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Title: Nuclear reactor building

A reactor building for enclosing a nuclear reactor includes a containment vessel having a wetwell disposed therein. The wetwell includes inner and outer walls, a floor, and a roof defining a wetwell pool and a suppression chamber disposed there above. The wetwell and containment vessel define a drywell surrounding the reactor. A plurality of vents are disposed in the wetwell pool in flow communication with the drywell for channeling into the wetwell pool steam released in the drywell from the reactor during a LOCA for example, for condensing the steam. A shell is disposed inside the wetwell and extends into the wetwell pool to define a dry gap devoid of wetwell water and disposed in flow communication with the suppression chamber. In a preferred embodiment, the wetwell roof is in the form of a slab disposed on spaced apart support beams which define there between an auxiliary chamber. The dry gap, and additionally the auxiliary chamber, provide increased volume to the suppression chamber for improving pressure margin. 4 figures.
Authors:
; ;
Publication Date:
OSTI Identifier:
5128482
Report Number(s):
US 5301215; A
PPN: US 7-981731
DOE Contract Number:
AC03-90SF18494
Resource Type:
Patent
Resource Relation:
Patent File Date: 25 Nov 1992
Research Org:
General Electric Co
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; CONTAINMENT BUILDINGS; DESIGN; WATER COOLED REACTORS; CONDENSATION CHAMBERS; LOSS OF COOLANT; MITIGATION; PRESSURE SUPPRESSION; STEAM; VAPOR CONDENSATION; ACCIDENTS; BUILDINGS; CONTAINMENT; REACTOR ACCIDENTS; REACTORS 220900* -- Nuclear Reactor Technology-- Reactor Safety; 210100 -- Power Reactors, Nonbreeding, Light-Water Moderated, Boiling Water Cooled; 210200 -- Power Reactors, Nonbreeding, Light-Water Moderated, Nonboiling Water Cooled