PWR decay heat removal system in which steam from the pressurizer drives a turbine which drives a pump to inject water into the reactor pressure vessel

Graham, Thomas G.

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Title: PWR decay heat removal system in which steam from the pressurizer drives a turbine which drives a pump to inject water into the reactor pressure vessel

Abstract

In conjunction with a pressurized water reactor (PWR) and a pressurizer configured to control pressure in the reactor pressure vessel, a decay heat removal system comprises a pressurized passive condenser, a turbine-driven pump connected to suction water from at least one water source into the reactor pressure vessel; and steam piping configured to deliver steam from the pressurizer to the turbine to operate the pump and to discharge the delivered steam into the pressurized passive condenser. The pump and turbine may be mounted on a common shaft via which the turbine drives the pump. The at least one water source may include a refueling water storage tank (RWST) and/or the pressurized passive condenser. A pressurizer power operated relief valve may control discharge of a portion of the delivered steam bypassing the turbine into the pressurized passive condenser to control pressure in the pressurizer.

Inventors:: Graham, Thomas G.

Issue Date:: Tue Mar 16 00:00:00 EDT 2021

Research Org.:: BWXT mPower, Inc., Charlotte, NC (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1805637

Patent Number(s):: 10950358

Application Number:: 16/938,423

Assignee:: BWXT mPower, Inc. (Charlotte, NC)

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

G - PHYSICS G21 - NUCLEAR PHYSICS G21D - NUCLEAR POWER PLANT

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G - PHYSICS G21 - NUCLEAR PHYSICS G21C - NUCLEAR REACTORS
G21C1/09 - Pressure regulating arrangements, i.e. pressurisers
G21C15/182 - {comprising powered means, e.g. pumps}
G21C15/185 - {using energy stored in reactor system}
G21C9/012 - by thermal accumulation or by steam condensation, e.g. ice condensers

G - PHYSICS G21 - NUCLEAR PHYSICS G21D - NUCLEAR POWER PLANT
G21D1/00 - Details of nuclear power plant
G21D3/06 - responsive to faults within the plant

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
Y02E30/00 - Energy generation of nuclear origin
Y02E30/30 - Nuclear fission reactors

Show less

DOE Contract Number:: NE0000583

Resource Type:: Patent

Resource Relation:: Patent File Date: 07/24/2020

Country of Publication:: United States

Language:: English

Citation Formats


                    Graham, Thomas G. PWR decay heat removal system in which steam from the pressurizer drives a turbine which drives a pump to inject water into the reactor pressure vessel.  United States: N. p., 2021. 
        Web.

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                    Graham, Thomas G. PWR decay heat removal system in which steam from the pressurizer drives a turbine which drives a pump to inject water into the reactor pressure vessel.  United States.

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                    Graham, Thomas G. Tue .  
        "PWR decay heat removal system in which steam from the pressurizer drives a turbine which drives a pump to inject water into the reactor pressure vessel".  United States.  https://www.osti.gov/servlets/purl/1805637.

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@article{osti_1805637,

  title        = {PWR decay heat removal system in which steam from the pressurizer drives a turbine which drives a pump to inject water into the reactor pressure vessel},

  author       = {Graham, Thomas G.},

  abstractNote = {In conjunction with a pressurized water reactor (PWR) and a pressurizer configured to control pressure in the reactor pressure vessel, a decay heat removal system comprises a pressurized passive condenser, a turbine-driven pump connected to suction water from at least one water source into the reactor pressure vessel; and steam piping configured to deliver steam from the pressurizer to the turbine to operate the pump and to discharge the delivered steam into the pressurized passive condenser. The pump and turbine may be mounted on a common shaft via which the turbine drives the pump. The at least one water source may include a refueling water storage tank (RWST) and/or the pressurized passive condenser. A pressurizer power operated relief valve may control discharge of a portion of the delivered steam bypassing the turbine into the pressurized passive condenser to control pressure in the pressurizer.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Mar 16 00:00:00 EDT 2021},

  month        = {Tue Mar 16 00:00:00 EDT 2021}

}

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Works referenced in this record:

Submerged Containment Vessel For A Nuclear Reactor
patent-application, May 2009

Reyes, JR., Jose N; Groome, John T.
US Patent Application 11/941024; 20090129531
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20090129531

Small Modular Reactor Safety Systems
patent-application, December 2013

Cronje, Johan M.; Harkness, Alexander W.; Cummins, William Edward
US Patent Application 13/495083; 20130336441
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20130336441

Passive safety system for a pressurized water nuclear reactor
patent, June 1988

Conway, Lawrence E.; Schulz, Terry L.
US Patent Document 4,753,771
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4753771

Passive containment cooling system
patent, January 1994

Billig, Paul F.; Cooke, Franklin E.; Fitch, James R.
US Patent Document 5,282,230
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5282230

Apparatus for removing the residual power of a pressurized nuclear reactor core
patent, September 1994

Gautier, G. Marie
US Patent Document 5,349,617
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5349617

Combined Core Makeup Tank And Heat Removal System For A Small Modular Pressurized Water Reactor
patent-application, December 2013

Memmott, Matthew J.; Harkness, Alexander W.; Cummins, William Edward
US Patent Application 13/495069; 2013033644
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20130336440

Passive Emergency Feedwater System
patent-application, May 2009

Reyes, JR., Jose N.; Groome, John T.
US Patent Application 12/121733; 20090129530
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20090129530

Water cooled nuclear reactors
patent, September 1991

Donaldson, Anthony J.
US Patent Document 5,045,274
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5045274

Safety device protecting a nuclear reactor pressure vessel against overpressure failure
patent, May 1996

Seidelberger, Hartmut; Stockhausen, Horst-Dieter; Hau, Gerhard
US Patent Document 5,517,538
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5517538

Nuclear reactor with emergency cooling water injection device
patent, March 1991

Chevereau, Gerard; Cauquelin, Claude; Falduti, Claude
US Patent Document 5,000,907
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5000907

Containment heat removal system
patent, April 1992

Wade, Gentry E.; Barbanti, Giancarlo; Gou, Perng-Fei
US Patent Document 5,106,571
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5106571

Reactor core isolation cooling system
patent, December 1992

Cooke, Franklin E.
US Patent Document 5,169,595
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5169595

Passive emergency feedwater system
patent, May 2012

Reyes, Jr., Jose N.; Groome, John T.
US Patent Document 8,170,173
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/8170173

Passive emergency water system for water-cooled nuclear reactors
patent, March 1999

Spinks, Norman J.
US Patent Document 5,887,043
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5887043

Passive Emergency Feedwater System
patent-application, July 2012

Reyes, JR., Jose N.; Groome, John T.
US Patent Application 13/425776; 20120177168
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20120177168

Passive containment system
patent, September 1984

Kleimola, Frank W.
US Patent Document 4,473,528
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4473528

Low pressure reactor safety systems and methods
patent, October 2016

Bergman, Mark A.
US Patent Document 9,460,818
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/9460818

Emergency Core Cooling Duct For Emergency Core Cooling Water Injection Of A Nuclear Reactor
patent-application, November 2010

Kwon, Tae-Soon; Euh, Dong Jin; Chu, In-Cheol
US Patent Application 12/499824; 20100278294
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20100278294

Passive containment cooling system
patent, September 1991

Conway, Lawrence E.; Stewart, William A.
US Patent Document 5,049,353
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5049353

Integral PWR with diverse emergency cooling and method of operating same
patent, September 2004

Conway, Lawrence E.; Carelli, Mario D.; Lombardi, Carlo
US Patent Document 6,795,518
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6795518

Full pressure passive emergency core cooling and residual heat removal system for water cooled nuclear reactors
patent, April 1992

Gardner, Frederick J.; Strong, Rodney
US Patent Document 5,102,616
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5102616

Nuclear reactor with makeup water assist from residual heat removal system
patent, December 1993

Corletti, Michael M.; Schulz, Terry L.
US Patent Document 5,268,943
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5268943

Method of operating a nuclear reactor with emergency cooling system economy
patent, April 1994

Klapdor, Hans V.; Metzinger, Josef
US Patent Document 5,301,216
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5301216

System for passively dissipating heat from the interior of a nuclear reactor containment structure
patent, December 1997

Cinotti, Luciano; Proto, Giuseppe
US Patent Document 5,694,442
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5694442

Refueling Water Storage Tank (RWST) with Tailored Passive Emergency Core Cooling (ECC) Flow
patent-application, September 2014

Watson, Ronald C.; Malloy III, John D.
US Patent Application 14/169192; 20140270044
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20140270044

Separate Type Safety Injection Tank And Integral Type Reactor Having The Same
patent-application, February 2014

Kim, Young In; Bae, Young Min; Yoon, Ju Hyeon
US Patent Application 13/958487; 20140050292
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20140050292

Nuclear power facilities
patent, April 1991

Tominaga, Kenji; Miki, Minoru; Takahashi, Tooru
US Patent Document 5,011,652
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5011652

Emergency cooling system and method
patent, January 1994

Oosterkamp, Willem J.; Cheung, Yee Kwong
US Patent Document 5,276,720
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5276720

Compact pressurized water nuclear reactor
patent, December 2006

Gautier, Guy-Marie; Pignatel, Jean-Francois
US Patent Document 7,154,982
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/7154982

Reactor Cooling System
patent, March 1969

Kjemtrup, Jens E.
US Patent Document 3,431,168
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/3431168

Reactor-core isolation cooling system with dedicated generator
patent, June 1992

Nazareno, Edgardo V.; Dillmann, Charles W.
US Patent Document 5,120,494
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5120494

Passive emergency water system for water-cooled nuclear reactors
patent, August 1997

Spinks, Norman J.
US Patent Document 5,661,770
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5661770

Defense in Depth Safety Paradigm for Nuclear Reactor
patent-application, November 2013

Malloy III, John D.
US Patent Application 13/864053; 20130301782
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20130301782

Pressurized water reactor
patent, July 1981

Ailloud, Jean; Monteil, Marcel
US Patent Document 4,278,500
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4278500

Passive nuclear power plant containment system
patent, January 1991

Garabedian, George
US Patent Document 4,986,956
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4986956

Nuclear reactor
patent, January 1990

Sako, Kiyoshi
US Patent Document 4,897,240
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4897240

Heat Removal System and Method for Use with a Nuclear Reactor
patent-application, August 2012

Houghton, Zach James; Biasca, Richard; Arthur, Jonathan James
US Patent Application 13/303408; 20120207260
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20120207260

Passive Emergency Feedwater System
patent-application, November 2012

Reyes, Jose N.; Groome, John T.
US Patent Application 13/453446; 20120294408
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20120294408

Nuclear reactor loss of coolant protection system
patent, March 1986

Loose, Robert A.
US Patent Document 4,576,782
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4576782

Passive shutdown cooling system for nuclear reactors
patent, April 1993

Spinks, Norman J.; Shill, Ronald H.
US Patent Document 5,202,083
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5202083

Passive Safety System of Integral Reactor
patent-application, January 2014

Moon, Joo Hyung; Lee, Won Jae; Kim, Keung Koo
US Patent Application 13/939547; 2014001673
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20140016734

Handling pool and safety water reserve for pressurized water-cooled nuclear reactor
patent, December 1991

Costes, Didier
US Patent Document 5,075,070
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5075070

Nuclear power facilities
patent, February 1992

Tominaga, Kenji; Miki, Minoru; Takahashi, Tooru
US Patent Document 5,087,408
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5087408

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Similar Records

Title: PWR decay heat removal system in which steam from the pressurizer drives a turbine which drives a pump to inject water into the reactor pressure vessel

Abstract

Citation Formats

Submerged Containment Vessel For A Nuclear Reactor patent-application, May 2009

Small Modular Reactor Safety Systems patent-application, December 2013

Passive safety system for a pressurized water nuclear reactor patent, June 1988

Passive containment cooling system patent, January 1994

Apparatus for removing the residual power of a pressurized nuclear reactor core patent, September 1994

Combined Core Makeup Tank And Heat Removal System For A Small Modular Pressurized Water Reactor patent-application, December 2013

Passive Emergency Feedwater System patent-application, May 2009

Water cooled nuclear reactors patent, September 1991

Safety device protecting a nuclear reactor pressure vessel against overpressure failure patent, May 1996

Nuclear reactor with emergency cooling water injection device patent, March 1991

Containment heat removal system patent, April 1992

Reactor core isolation cooling system patent, December 1992

Passive emergency feedwater system patent, May 2012

Passive emergency water system for water-cooled nuclear reactors patent, March 1999

Passive Emergency Feedwater System patent-application, July 2012

Passive containment system patent, September 1984

Low pressure reactor safety systems and methods patent, October 2016

Emergency Core Cooling Duct For Emergency Core Cooling Water Injection Of A Nuclear Reactor patent-application, November 2010

Passive containment cooling system patent, September 1991

Integral PWR with diverse emergency cooling and method of operating same patent, September 2004

Full pressure passive emergency core cooling and residual heat removal system for water cooled nuclear reactors patent, April 1992

Nuclear reactor with makeup water assist from residual heat removal system patent, December 1993

Method of operating a nuclear reactor with emergency cooling system economy patent, April 1994

System for passively dissipating heat from the interior of a nuclear reactor containment structure patent, December 1997

Refueling Water Storage Tank (RWST) with Tailored Passive Emergency Core Cooling (ECC) Flow patent-application, September 2014

Separate Type Safety Injection Tank And Integral Type Reactor Having The Same patent-application, February 2014

Nuclear power facilities patent, April 1991

Emergency cooling system and method patent, January 1994

Compact pressurized water nuclear reactor patent, December 2006

Reactor Cooling System patent, March 1969

Reactor-core isolation cooling system with dedicated generator patent, June 1992

Passive emergency water system for water-cooled nuclear reactors patent, August 1997

Defense in Depth Safety Paradigm for Nuclear Reactor patent-application, November 2013

Pressurized water reactor patent, July 1981

Passive nuclear power plant containment system patent, January 1991

Nuclear reactor patent, January 1990

Heat Removal System and Method for Use with a Nuclear Reactor patent-application, August 2012

Passive Emergency Feedwater System patent-application, November 2012

Nuclear reactor loss of coolant protection system patent, March 1986

Passive shutdown cooling system for nuclear reactors patent, April 1993

Passive Safety System of Integral Reactor patent-application, January 2014

Handling pool and safety water reserve for pressurized water-cooled nuclear reactor patent, December 1991

Nuclear power facilities patent, February 1992

Submerged Containment Vessel For A Nuclear Reactor
patent-application, May 2009

Small Modular Reactor Safety Systems
patent-application, December 2013

Passive safety system for a pressurized water nuclear reactor
patent, June 1988

Passive containment cooling system
patent, January 1994

Apparatus for removing the residual power of a pressurized nuclear reactor core
patent, September 1994

Combined Core Makeup Tank And Heat Removal System For A Small Modular Pressurized Water Reactor
patent-application, December 2013

Passive Emergency Feedwater System
patent-application, May 2009

Water cooled nuclear reactors
patent, September 1991

Safety device protecting a nuclear reactor pressure vessel against overpressure failure
patent, May 1996

Nuclear reactor with emergency cooling water injection device
patent, March 1991

Containment heat removal system
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Reactor core isolation cooling system
patent, December 1992

Passive emergency feedwater system
patent, May 2012

Passive emergency water system for water-cooled nuclear reactors
patent, March 1999

Passive Emergency Feedwater System
patent-application, July 2012

Passive containment system
patent, September 1984

Low pressure reactor safety systems and methods
patent, October 2016

Emergency Core Cooling Duct For Emergency Core Cooling Water Injection Of A Nuclear Reactor
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Integral PWR with diverse emergency cooling and method of operating same
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Full pressure passive emergency core cooling and residual heat removal system for water cooled nuclear reactors
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Method of operating a nuclear reactor with emergency cooling system economy
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