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

Patent · Sat Jan 01 00:00:00 EST 1994

OSTI ID:869686

Hill, Paul R ^[1]

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1. Tucson, AZ

A boiling water reactor 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.

• Research Organization: General Electric Co., Boston, MA (United States)
• DOE Contract Number: AC03-90SF18494
• Assignee: General Electric Company (San Jose, CA)
• Patent Number(s): US 5377243
• OSTI ID: 869686
• Country of Publication: United States
• Language: English

Related Subjects

passive
containment
cooling
drywell
pressure
regulation
boiling
water
reactor
regulating
valve
placing
wetwell
flow
communication
intake
duct
subsystem
adjusted
maintain
slightly
below
initial
blowdown
transient
addition
pccs
design
benefit
eliminating
minimizing
steam
leakage
longer-term
post-loca
time
period
minimizes
temperature
difference
reduces
rate
long-term
buildup
extending
reach
limit
temperature difference
water reactor
time period
flow communication
containment cooling
passive containment
boiling water
regulating valve
pressure buildup
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