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Title: Passive techniques for long-term reactor cooling

Abstract

In a pressurized water reactor (PWR), emergency core cooling (ECC) responds to depressurization due to a vessel penetration break at the top of the pressure vessel by draining water from a body of water through an injection line into the pressure vessel. A barrier operates concurrently with the ECC to suppress flow of liquid water from the pressure vessel out the vessel penetration break. The barrier may comprise one or more of: (1) an injection line extension passing through the central riser to drain water into the central riser; (2) openings in a lower portion of a central riser to shunt some upward flow from the central riser into a lower portion of the downcomer annulus; and (3) a surge line providing fluid communication between a pressurizer volume at the top of the pressure vessel and the remainder of the pressure vessel which directs water outboard toward the downcomer annulus.

Inventors:
; ; ; ; ; ;
Issue Date:
Research Org.:
BWXT mPower, Inc., Charlotte, NC (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1735053
Patent Number(s):
10720248
Application Number:
14/215,530
Assignee:
BWXT mPower, Inc. (Charlotte, NC)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
G - PHYSICS G21 - NUCLEAR PHYSICS G21C - NUCLEAR REACTORS
DOE Contract Number:  
NE0000583
Resource Type:
Patent
Resource Relation:
Patent File Date: 03/17/2014
Country of Publication:
United States
Language:
English

Citation Formats

Malloy, III, John D., Bingham, Billy E., Watson, Ronald C., Williams, Jason G., Ales, Matthew W., Inman, James B., and Boyle, Sean M. Passive techniques for long-term reactor cooling. United States: N. p., 2020. Web.
Malloy, III, John D., Bingham, Billy E., Watson, Ronald C., Williams, Jason G., Ales, Matthew W., Inman, James B., & Boyle, Sean M. Passive techniques for long-term reactor cooling. United States.
Malloy, III, John D., Bingham, Billy E., Watson, Ronald C., Williams, Jason G., Ales, Matthew W., Inman, James B., and Boyle, Sean M. Tue . "Passive techniques for long-term reactor cooling". United States. https://www.osti.gov/servlets/purl/1735053.
@article{osti_1735053,
title = {Passive techniques for long-term reactor cooling},
author = {Malloy, III, John D. and Bingham, Billy E. and Watson, Ronald C. and Williams, Jason G. and Ales, Matthew W. and Inman, James B. and Boyle, Sean M.},
abstractNote = {In a pressurized water reactor (PWR), emergency core cooling (ECC) responds to depressurization due to a vessel penetration break at the top of the pressure vessel by draining water from a body of water through an injection line into the pressure vessel. A barrier operates concurrently with the ECC to suppress flow of liquid water from the pressure vessel out the vessel penetration break. The barrier may comprise one or more of: (1) an injection line extension passing through the central riser to drain water into the central riser; (2) openings in a lower portion of a central riser to shunt some upward flow from the central riser into a lower portion of the downcomer annulus; and (3) a surge line providing fluid communication between a pressurizer volume at the top of the pressure vessel and the remainder of the pressure vessel which directs water outboard toward the downcomer annulus.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {7}
}

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