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Title: CRDM with separate SCRAM latch engagement and locking

Abstract

A control rod drive mechanism (CRDM) configured to latch onto the lifting rod of a control rod assembly and including separate latch engagement and latch holding mechanisms. A CRDM configured to latch onto the lifting rod of a control rod assembly and including a four-bar linkage closing the latch, wherein the four-bar linkage biases the latch closed under force of gravity.

Inventors:
; ; ; ; ; ; ;
Issue Date:
Research Org.:
BWXT mPower, Inc., Charlotte, NC (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1416329
Patent Number(s):
9865364
Application Number:
14/174,630
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
DOE Contract Number:  
NE0000583
Resource Type:
Patent
Resource Relation:
Patent File Date: 2014 Feb 06
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Dodd, Christopher D., DeSantis, Paul K., Stambaugh, Kevin J., Mackovjak, Allan R., McLaughlin, John P., Goodyear, Brett T., Edwards, Michael J., and Ales, Matthew W.. CRDM with separate SCRAM latch engagement and locking. United States: N. p., 2018. Web.
Dodd, Christopher D., DeSantis, Paul K., Stambaugh, Kevin J., Mackovjak, Allan R., McLaughlin, John P., Goodyear, Brett T., Edwards, Michael J., & Ales, Matthew W.. CRDM with separate SCRAM latch engagement and locking. United States.
Dodd, Christopher D., DeSantis, Paul K., Stambaugh, Kevin J., Mackovjak, Allan R., McLaughlin, John P., Goodyear, Brett T., Edwards, Michael J., and Ales, Matthew W.. Tue . "CRDM with separate SCRAM latch engagement and locking". United States. https://www.osti.gov/servlets/purl/1416329.
@article{osti_1416329,
title = {CRDM with separate SCRAM latch engagement and locking},
author = {Dodd, Christopher D. and DeSantis, Paul K. and Stambaugh, Kevin J. and Mackovjak, Allan R. and McLaughlin, John P. and Goodyear, Brett T. and Edwards, Michael J. and Ales, Matthew W.},
abstractNote = {A control rod drive mechanism (CRDM) configured to latch onto the lifting rod of a control rod assembly and including separate latch engagement and latch holding mechanisms. A CRDM configured to latch onto the lifting rod of a control rod assembly and including a four-bar linkage closing the latch, wherein the four-bar linkage biases the latch closed under force of gravity.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {1}
}

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Drive Mechanism for Control Elements
patent, September 1971


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


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


Gripper Device
patent, December 1974


Regulating rod drive of nuclear reactor
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Drive mechanism nuclear reactor control rod
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Hydraulic latch scram release mechanism
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Nuclear reactor control apparatus
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Multi-function magnetic jack control drive mechanism
patent, July 1986


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


Apparatus with linear movement
patent, February 1987


Control rod driveline and grapple
patent, December 1987


Rod cluster having improved vane configuration
patent, September 1989


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


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


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


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


Internal control rod drive for a BWR
patent, November 1994


Control rod drive mechanism
patent, July 1998


Control element assembly position system
patent, July 2000


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


Advanced gray rod control assembly
patent, August 2008


Control rod drive mechanism for nuclear reactor
patent, August 2014


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


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patent-application, May 2009


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


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


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


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


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


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