CRDM designs with separate SCRAM latch engagement and locking

DeSantis, Paul K.; Stambaugh, Kevin J.; Goodyear, Brett T.; Edwards, Michael J.; Ales, Matthew W.

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A - human necessities
A01 - agriculture
A21 - baking
A22 - butchering
A23 - foods or foodstuffs
A24 - tobacco
A41 - wearing apparel
A42 - headwear
A43 - footwear
A44 - haberdashery
A45 - hand or travelling articles
A46 - brushware
A47 - furniture
A61 - medical or veterinary science
A62 - life-saving
A63 - sports
A99 - subject matter not otherwise provided for in this section
B - performing operations
B01 - physical or chemical processes or apparatus in general
B02 - crushing, pulverising, or disintegrating
B03 - separation of solid materials using liquids or using pneumatic tables or jigs
B04 - centrifugal apparatus or machines for carrying-out physical or chemical processes
B05 - spraying or atomising in general
B06 - generating or transmitting mechanical vibrations in general
B07 - separating solids from solids
B08 - cleaning
B09 - disposal of solid waste
B21 - mechanical metal-working without essentially removing material
B22 - casting
B23 - machine tools
B24 - grinding
B25 - hand tools
B26 - hand cutting tools
B27 - working or preserving wood or similar material
B28 - working cement, clay, or stone
B29 - working of plastics
B30 - presses
B31 - making articles of paper, cardboard or material worked in a manner analogous to paper
B32 - layered products
B33 - additive manufacturing technology
B41 - printing
B42 - bookbinding
B43 - writing or drawing implements
B44 - decorative arts
B60 - vehicles in general
B61 - railways
B62 - land vehicles for travelling otherwise than on rails
B63 - ships or other waterborne vessels
B64 - aircraft
B65 - conveying
B66 - hoisting
B67 - opening, closing {or cleaning} bottles, jars or similar containers
B68 - saddlery
B81 - microstructural technology
B82 - nanotechnology
B99 - subject matter not otherwise provided for in this section
C - chemistry
C01 - inorganic chemistry
C02 - treatment of water, waste water, sewage, or sludge
C03 - glass
C04 - cements
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C09 - dyes
C10 - petroleum, gas or coke industries
C11 - animal or vegetable oils, fats, fatty substances or waxes
C12 - biochemistry
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C14 - skins
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C22 - metallurgy
C23 - coating metallic material
C25 - electrolytic or electrophoretic processes
C30 - crystal growth
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D - textiles
D01 - natural or man-made threads or fibres
D02 - yarns
D03 - weaving
D04 - braiding
D05 - sewing
D06 - treatment of textiles or the like
D07 - ropes
D10 - indexing scheme associated with sublasses of section d, relating to textiles
D21 - paper-making
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E01 - construction of roads, railways, or bridges
E02 - hydraulic engineering
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F02 - combustion engines
F03 - machines or engines for liquids
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F05 - indexing schemes relating to engines or pumps in various subclasses of classes f01-f04
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F16 - engineering elements and units
F17 - storing or distributing gases or liquids
F21 - lighting
F22 - steam generation
F23 - combustion apparatus
F24 - heating
F25 - refrigeration or cooling
F26 - drying
F27 - furnaces
F28 - heat exchange in general
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F42 - ammunition
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G - physics
G01 - measuring
G02 - optics
G03 - photography
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G06 - computing
G07 - checking-devices
G08 - signalling
G09 - education
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Title: CRDM designs with separate SCRAM latch engagement and locking

Abstract

A control rod drive mechanism (CRDM) includes a lifting rod supporting a control rod and a holding mechanism comprising an electromagnetic circuit with magnetic poles drawn together when the electromagnetic circuit is energized to hold the lifting rod. The hold is released upon de-energizing the electromagnetic circuit. A translation mechanism linearly translates the lifting rod held by the holding mechanism. The holding mechanism may include a non-magnetic spacer between the magnetic poles that defines a gap between the drawn together magnetic poles. The translation mechanism may include latches configured to engage an upper end of the lifting rod, and the holding mechanism draws the magnetic poles together to hold the latches engaged with the upper end of the lifting rod. A four-bar cam assembly may be used to cam the latches closed in response to a vertical actuation force applied to the cam bars.

Inventors:: DeSantis, Paul K.; Stambaugh, Kevin J.; Goodyear, Brett T.; Edwards, Michael J.; Ales, Matthew W.

Issue Date:: 2019-09-10

Research Org.:: BWXT mPower, Inc., Charlotte, NC (United States); BWXT Nuclear Operations Group, Lynchburg, VA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1576350

Patent Number(s):: 10410755

Application Number:: 14/255,201

Assignee:: BWXT mPower, Inc. (Charlotte, NC); BWXT Nuclear Operations Group, Inc. (Lynchburg, VA)

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
G21C7/117 - Clusters of control rods
G21C7/14 - Mechanical drive arrangements
G21C9/02 - Means for effecting very rapid reduction of the reactivity factor under fault conditions, e.g. reactor fuse

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

Show less

DOE Contract Number:: NE0000583

Resource Type:: Patent

Resource Relation:: Patent File Date: 2014 Apr 17

Country of Publication:: United States

Language:: English

Citation Formats


                    DeSantis, Paul K., Stambaugh, Kevin J., Goodyear, Brett T., Edwards, Michael J., and Ales, Matthew W. CRDM designs with separate SCRAM latch engagement and locking.  United States: N. p., 2019. 
        Web.

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                    DeSantis, Paul K., Stambaugh, Kevin J., Goodyear, Brett T., Edwards, Michael J., & Ales, Matthew W. CRDM designs with separate SCRAM latch engagement and locking.  United States.

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                    DeSantis, Paul K., Stambaugh, Kevin J., Goodyear, Brett T., Edwards, Michael J., and Ales, Matthew W. Tue .  
        "CRDM designs with separate SCRAM latch engagement and locking".  United States.  https://www.osti.gov/servlets/purl/1576350.

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@article{osti_1576350,

  title        = {CRDM designs with separate SCRAM latch engagement and locking},

  author       = {DeSantis, Paul K. and Stambaugh, Kevin J. and Goodyear, Brett T. and Edwards, Michael J. and Ales, Matthew W.},

  abstractNote = {A control rod drive mechanism (CRDM) includes a lifting rod supporting a control rod and a holding mechanism comprising an electromagnetic circuit with magnetic poles drawn together when the electromagnetic circuit is energized to hold the lifting rod. The hold is released upon de-energizing the electromagnetic circuit. A translation mechanism linearly translates the lifting rod held by the holding mechanism. The holding mechanism may include a non-magnetic spacer between the magnetic poles that defines a gap between the drawn together magnetic poles. The translation mechanism may include latches configured to engage an upper end of the lifting rod, and the holding mechanism draws the magnetic poles together to hold the latches engaged with the upper end of the lifting rod. A four-bar cam assembly may be used to cam the latches closed in response to a vertical actuation force applied to the cam bars.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2019},

  month        = {9}

}

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Similar Records

Title: CRDM designs with separate SCRAM latch engagement and locking

Abstract

Citation Formats

Single-step multiple repositionings of control rod cluster assembly during each nuclear reactor fuel cycle patent, November 1991

Multi-function magnetic jack control drive mechanism patent, July 1986

Resiliently loaded lateral supports for cantilever-mounted rod guides of a pressurized water reactor patent, October 1989

Nuclear Reactor Internal Hydraulic Control Rod Drive Mechanism Assembly patent-application, June 2012

Automatic controller for magnetic jack type control rod drive mechanism patent, May 1987

Nuclear Reactor Control Rod Spider Assembly patent-application, October 2008

Spectral shift-producing subassembly for use in a nuclear fuel assembly patent, April 1993

Apparatus with linear movement patent, February 1987

Control Arrangement for Self-Closing Control Rod Latches patent, October 1973

Linear motion device and method for inserting and withdrawing control rods patent, November 1984

Nuclear Reactor Control Rod Drive Mechanism patent-application, June 2012

Hydraulic latch scram release mechanism patent, February 1980

Method and apparatus for preventing relative rotation of tube members in a control rod drive mechanism patent, August 2001

Nuclear reactor control apparatus patent, November 1983

Apparatus for handling constituent elements of reactor core patent, December 1989

Rod cluster having improved vane configuration patent, September 1989

Regulating rod drive of nuclear reactor patent, November 1978

Gripper Type Linear Motion Device patent, November 1964

Control element assembly position system patent, July 2000

Device for the automatic disconnection of a control rod and a nuclear reactor absorber cluster patent, February 1997

Hybrid nuclear reactor grey rod to obtain required reactivity worth patent, November 1991

CRDM with Separate Scram Latch Engagement and Locking patent-application, September 2014

Tool for handling a cluster of rods of consumable poison patent, July 1993

Reconstitutable control assembly having removable control rods with detachable split upper end plugs patent, August 1992

Segmented coil assembly for control rod drive patent, April 1994

Nuclear Reactor Having Control-Rod Retaining Means patent, December 1974

Method and system for monitoring control rod element assembly position patent, May 2001

System and method for testing the free fall time of nuclear reactor control rods patent, November 1998

Reconstitutable control assembly having removable control rods with detachable split upper end plugs patent, February 1991

Advanced gray rod control assembly patent, August 2008

Device for Controlling and Shutting-Down Pressurized-Water Nuclear Reactor patent, May 1973

Nuclear Reactor Internal Electric Control Rod Drive Mechanism Assembly patent-application, June 2012

Rod assembly for nuclear reactors patent-application, May 2009

Control rod driveline and grapple patent, December 1987

Reconstitutable control assembly having removable control rods with detachable split upper end plugs patent, December 1989

Monitoring control rod element assembly position patent, July 2002

Curvilinear translating latch and linkage arrangement in a control rod drive mechanism of a nuclear reactor patent, April 1991

Layout Decomposition Based on Partial Intensity Distribution patent-application, February 2012

Nuclear reactor control apparatus patent, October 1983

Method of repairing a nuclear fuel rod assembly with damaged fuel rod and a damaged spacer patent, April 1997

Control Rod Drive Mechanism for Nuclear Reactor patent-application, December 2010

Electromagnetic safety device of a screw/nut type patent, October 1986

Drive mechanism nuclear reactor control rod patent, November 1978

Control rod drive mechanism for a nuclear reactor patent, November 1976

Drive Mechanism for Control Elements patent, September 1971

Control rod drive mechanism patent, July 1998

Gripper Device patent, December 1974

Traveling Crane Head Subassemby for Atomic Reactor Fuel Cells patent, September 1972

Operating devices for control rods in a nuclear reactor patent, September 1984

Internal control rod drive for a BWR patent, November 1994

Compactable control element assembly for a nuclear reactor patent, May 1976

Control Rod Drive Mechanism for Nuclear Reactor patent-application, September 2011

Frictionally loaded top end supports for cantilever-mounted rod guides of a pressurized water reactor patent, August 1989

Single-step multiple repositionings of control rod cluster assembly during each nuclear reactor fuel cycle
patent, November 1991

Multi-function magnetic jack control drive mechanism
patent, July 1986

Resiliently loaded lateral supports for cantilever-mounted rod guides of a pressurized water reactor
patent, October 1989

Nuclear Reactor Internal Hydraulic Control Rod Drive Mechanism Assembly
patent-application, June 2012

Automatic controller for magnetic jack type control rod drive mechanism
patent, May 1987

Nuclear Reactor Control Rod Spider Assembly
patent-application, October 2008

Spectral shift-producing subassembly for use in a nuclear fuel assembly
patent, April 1993

Apparatus with linear movement
patent, February 1987

Control Arrangement for Self-Closing Control Rod Latches
patent, October 1973

Linear motion device and method for inserting and withdrawing control rods
patent, November 1984

Nuclear Reactor Control Rod Drive Mechanism
patent-application, June 2012

Hydraulic latch scram release mechanism
patent, February 1980

Method and apparatus for preventing relative rotation of tube members in a control rod drive mechanism
patent, August 2001

Nuclear reactor control apparatus
patent, November 1983

Apparatus for handling constituent elements of reactor core
patent, December 1989

Rod cluster having improved vane configuration
patent, September 1989

Regulating rod drive of nuclear reactor
patent, November 1978

Gripper Type Linear Motion Device
patent, November 1964

Control element assembly position system
patent, July 2000

Device for the automatic disconnection of a control rod and a nuclear reactor absorber cluster
patent, February 1997

Hybrid nuclear reactor grey rod to obtain required reactivity worth
patent, November 1991

CRDM with Separate Scram Latch Engagement and Locking
patent-application, September 2014

Tool for handling a cluster of rods of consumable poison
patent, July 1993

Reconstitutable control assembly having removable control rods with detachable split upper end plugs
patent, August 1992

Segmented coil assembly for control rod drive
patent, April 1994

Nuclear Reactor Having Control-Rod Retaining Means
patent, December 1974

Method and system for monitoring control rod element assembly position
patent, May 2001

System and method for testing the free fall time of nuclear reactor control rods
patent, November 1998

Reconstitutable control assembly having removable control rods with detachable split upper end plugs
patent, February 1991

Advanced gray rod control assembly
patent, August 2008

Device for Controlling and Shutting-Down Pressurized-Water Nuclear Reactor
patent, May 1973

Nuclear Reactor Internal Electric Control Rod Drive Mechanism Assembly
patent-application, June 2012

Rod assembly for nuclear reactors
patent-application, May 2009

Control rod driveline and grapple
patent, December 1987

Reconstitutable control assembly having removable control rods with detachable split upper end plugs
patent, December 1989

Monitoring control rod element assembly position
patent, July 2002

Curvilinear translating latch and linkage arrangement in a control rod drive mechanism of a nuclear reactor
patent, April 1991

Layout Decomposition Based on Partial Intensity Distribution
patent-application, February 2012

Nuclear reactor control apparatus
patent, October 1983

Method of repairing a nuclear fuel rod assembly with damaged fuel rod and a damaged spacer
patent, April 1997

Control Rod Drive Mechanism for Nuclear Reactor
patent-application, December 2010

Electromagnetic safety device of a screw/nut type
patent, October 1986

Drive mechanism nuclear reactor control rod
patent, November 1978

Control rod drive mechanism for a nuclear reactor
patent, November 1976

Drive Mechanism for Control Elements
patent, September 1971

Control rod drive mechanism
patent, July 1998

Gripper Device
patent, December 1974

Traveling Crane Head Subassemby for Atomic Reactor Fuel Cells
patent, September 1972

Operating devices for control rods in a nuclear reactor
patent, September 1984

Internal control rod drive for a BWR
patent, November 1994

Compactable control element assembly for a nuclear reactor
patent, May 1976

Control Rod Drive Mechanism for Nuclear Reactor
patent-application, September 2011

Frictionally loaded top end supports for cantilever-mounted rod guides of a pressurized water reactor
patent, August 1989