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Title: Passive containment cooling system with drywell pressure regulation for boiling water reactor

Abstract

A boiling water reactor is described having a regulating valve for placing the wetwell in flow communication with an intake duct of the passive containment cooling system. This subsystem can be adjusted to maintain the drywell pressure at (or slightly below or above) wetwell pressure after the initial reactor blowdown transient is over. This addition to the PCCS design has the benefit of eliminating or minimizing steam leakage from the drywell to the wetwell in the longer-term post-LOCA time period and also minimizes the temperature difference between drywell and wetwell. This in turn reduces the rate of long-term pressure buildup of the containment, thereby extending the time to reach the design pressure limit. 4 figures.

Inventors:
Publication Date:
Research Org.:
General Electric Co
OSTI Identifier:
6888311
Alternate Identifier(s):
OSTI ID: 6888311
Patent Number(s):
US 5377243; A
Application Number:
PPN: US 8-138677
Assignee:
General Electric Company, San Jose, CA (United States) OAK; EDB-95-028506
DOE Contract Number:  
AC03-90SF18494
Resource Type:
Patent
Resource Relation:
Patent File Date: 18 Oct 1993
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; BWR TYPE REACTORS; CONTAINMENT SPRAY SYSTEMS; DESIGN; LOSS OF COOLANT; PRESSURE CONTROL; PRESSURE REGULATORS; ACCIDENTS; CONTAINMENT; CONTAINMENT SYSTEMS; CONTROL; CONTROL EQUIPMENT; ENGINEERED SAFETY SYSTEMS; ENRICHED URANIUM REACTORS; EQUIPMENT; POWER REACTORS; REACTOR ACCIDENTS; REACTORS; THERMAL REACTORS; WATER COOLED REACTORS; WATER MODERATED REACTORS 220900* -- Nuclear Reactor Technology-- Reactor Safety; 210100 -- Power Reactors, Nonbreeding, Light-Water Moderated, Boiling Water Cooled

Citation Formats

Hill, P.R. Passive containment cooling system with drywell pressure regulation for boiling water reactor. United States: N. p., 1994. Web.
Hill, P.R. Passive containment cooling system with drywell pressure regulation for boiling water reactor. United States.
Hill, P.R. Tue . "Passive containment cooling system with drywell pressure regulation for boiling water reactor". United States.
@article{osti_6888311,
title = {Passive containment cooling system with drywell pressure regulation for boiling water reactor},
author = {Hill, P.R.},
abstractNote = {A boiling water reactor is described having a regulating valve for placing the wetwell in flow communication with an intake duct of the passive containment cooling system. This subsystem can be adjusted to maintain the drywell pressure at (or slightly below or above) wetwell pressure after the initial reactor blowdown transient is over. This addition to the PCCS design has the benefit of eliminating or minimizing steam leakage from the drywell to the wetwell in the longer-term post-LOCA time period and also minimizes the temperature difference between drywell and wetwell. This in turn reduces the rate of long-term pressure buildup of the containment, thereby extending the time to reach the design pressure limit. 4 figures.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 27 00:00:00 EST 1994},
month = {Tue Dec 27 00:00:00 EST 1994}
}