Passive containment cooling system with drywell pressure regulation for boiling water reactor
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.
- Research Organization:
- General Electric Co., Boston, MA (United States)
- DOE Contract Number:
- AC03-90SF18494
- Assignee:
- General Electric Company, San Jose, CA (United States)
- Patent Number(s):
- US 5377243; A
- Application Number:
- PPN: US 8-138677
- OSTI ID:
- 6888311
- Resource Relation:
- Patent File Date: 18 Oct 1993
- Country of Publication:
- United States
- Language:
- English
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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