Pressurized water nuclear reactor system with hot leg vortex mitigator

Lau, Louis K. S.

Title: Pressurized water nuclear reactor system with hot leg vortex mitigator

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Abstract

A pressurized water nuclear reactor system includes a vortex mitigator in the form of a cylindrical conduit between the hot leg conduit and a first section of residual heat removal conduit, which conduit leads to a pump and a second section of residual heat removal conduit leading back to the reactor pressure vessel. The cylindrical conduit is of such a size that where the hot leg has an inner diameter D.sub.1, the first section has an inner diameter D.sub.2, and the cylindrical conduit or step nozzle has a length L and an inner diameter of D.sub.3 ; D.sub.3 /D.sub.1 is at least 0.55, D.sub.2 is at least 1.9, and L/D.sub.3 is at least 1.44, whereby cavitation of the pump by a vortex formed in the hot leg is prevented.

Inventors:

Lau, Louis K. S. ^[1]

Monroeville, PA

Issue Date:: 1990-01-01

Research Org.:: Westinghouse Electric Corp., Pittsburgh, PA (United States)

OSTI Identifier:: 867527

Patent Number(s):: 4957693

Assignee:: Westinghouse Electric Corp. (Pittsburgh, PA)

Patent Classifications (CPCs):: G - PHYSICS G21 - NUCLEAR PHYSICS G21C - NUCLEAR REACTORS

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

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G - PHYSICS G21 - NUCLEAR PHYSICS G21C - NUCLEAR REACTORS
G21C15/187 - {using energy from the electric grid}

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
Y02E30/30 - Nuclear fission reactors

G - PHYSICS G21 - NUCLEAR PHYSICS G21C - NUCLEAR REACTORS
G21C1/086 - {Pressurised water reactors}
G21C15/18 - Emergency cooling arrangements

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DOE Contract Number:: AC03-86SF16038

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: pressurized; water; nuclear; reactor; hot; leg; vortex; mitigator; form; cylindrical; conduit; section; residual; heat; removal; leads; pump; leading; pressure; vessel; size; inner; diameter; step; nozzle; length; 55; 44; whereby; cavitation; formed; prevented; cylindrical conduit; inner diameter; pressurized water; reactor pressure; pressure vessel; nuclear reactor; residual heat; heat removal; water nuclear; removal conduit; conduit leading; hot leg; vortex mitigator; /376/976/

Citation Formats


                    Lau, Louis K. S. Pressurized water nuclear reactor system with hot leg vortex mitigator.  United States: N. p., 1990. 
        Web.

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                    Lau, Louis K. S. Pressurized water nuclear reactor system with hot leg vortex mitigator.  United States.

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                    Lau, Louis K. S. Mon .  
        "Pressurized water nuclear reactor system with hot leg vortex mitigator".  United States.  https://www.osti.gov/servlets/purl/867527.

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@article{osti_867527,

  title        = {Pressurized water nuclear reactor system with hot leg vortex mitigator},

  author       = {Lau, Louis K. S.},

  abstractNote = {A pressurized water nuclear reactor system includes a vortex mitigator in the form of a cylindrical conduit between the hot leg conduit and a first section of residual heat removal conduit, which conduit leads to a pump and a second section of residual heat removal conduit leading back to the reactor pressure vessel. The cylindrical conduit is of such a size that where the hot leg has an inner diameter D.sub.1, the first section has an inner diameter D.sub.2, and the cylindrical conduit or step nozzle has a length L and an inner diameter of D.sub.3 ; D.sub.3 /D.sub.1 is at least 0.55, D.sub.2 is at least 1.9, and L/D.sub.3 is at least 1.44, whereby cavitation of the pump by a vortex formed in the hot leg is prevented.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1990},

  month        = {1}

}

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