Passive techniques for long-term reactor cooling

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United States of America Patent

PATENT NO 11355253
APP PUB NO 20200350084A1
SERIAL NO

16933498

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Abstract

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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.

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Patent Owner(s)

Patent OwnerAddress
BWXT MPOWER INC11525 N COMMUNITY HOUSE RD SUITE 600 CHARLOTTE NC 28277

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ales, Matthew W Puyallup, US 35 131
Bingham, Billy E Lynchburg, US 12 126
Boyle, Sean M Charlotte, US 4 9
Inman, James B Forest, US 27 139
Malloy,, III John D Goode, US 18 51
Watson, Ronald C Forest, US 12 53
Williams, Jason G Concord, US 4 1

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