Boiling water reactors

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Y02E30/31

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YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS Y02Climate change prevention Y02EREDUCTION OF GREENHOUSE GASES [GHG] EMISSION, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION Y02E30/00Energy generation of nuclear origin

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Y02E30/31Boiling water reactors

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Patents Grantslast 30 patents

Information Patent Grant
Steam separator and nuclear boiling water reactor including the same
- Patent number 10,847,273
- Issue date Nov 24, 2020
- GE-Hitachi Nuclear Energy Americas LLC
- Phillip Glen Ellison
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Fuel assembly for a nuclear power boiling water reactor
- Patent number 10,726,958
- Issue date Jul 28, 2020
- Thor Energy AS
- Klara Insulander Björk
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Grant
Core plate assembly, and a method of performing work on a core plat...
- Patent number 10,665,352
- Issue date May 26, 2020
- Westinghouse Electric Sweden AB
- Sven Perzon
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Grant
Core catcher and boiling water nuclear plant using the same
- Patent number 10,497,481
- Issue date Dec 3, 2019
- Kabushiki Kaisha Toshiba
- Takashi Sato
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Sealing device for jet pump slip joints
- Patent number 10,436,227
- Issue date Oct 8, 2019
- Framatome Inc.
- Kenneth Wade Markham
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Fuel assembly for a nuclear boiling water reactor
- Patent number 10,395,780
- Issue date Aug 27, 2019
- Westinghouse Electric Sweden AB
- Uffe Bergmann
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Grant
Method and system for external alternate suppression pool cooling f...
- Patent number 10,395,784
- Issue date Aug 27, 2019
- GE-Hitachi Nuclear Energy Americas LLC
- Robert J. Ginsberg
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Grant
Nuclear plant with a containment shell and with a pressure relief s...
- Patent number 10,304,574
- Issue date May 28, 2019
- Framatome GmbH
- Sebastian Buhlmann
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Grant
Control rod drive mechanism
- Patent number 10,242,759
- Issue date Mar 26, 2019
- Hitachi - GE Nuclear Energy, Ltd.
- Takahiro Tsuchiya
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Floating filter screen in a lower tie plate box of a nuclear fuel a...
- Patent number 10,176,897
- Issue date Jan 8, 2019
- Yousef M. Farawila
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Feedwater temperature control methods and systems
- Patent number 10,163,532
- Issue date Dec 25, 2018
- GE-Hitachi Nuclear Energy Americas LLC
- Stephan Craig Moen
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Steam separation system and nuclear boiling water reactor including...
- Patent number 10,049,775
- Issue date Aug 14, 2018
- GE-Hitachi Nuclear Energy Americas LLC
- Bulent Alpay
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Grant
Method and apparatus for a BWR jet pump inlet mixer compliant stop
- Patent number 10,024,338
- Issue date Jul 17, 2018
- GE-Hitachi Nuclear Energy Americas LLC
- Robin D. Sprague
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Grant
Moderating fuel rods including metal hydride and methods of moderat...
- Patent number 9,922,732
- Issue date Mar 20, 2018
- Global Nuclear Fuel -- Americas, LLC
- John Christopher Hannah
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Grant
Containment vent system with passive mode for boiling water reactor...
- Patent number 9,922,734
- Issue date Mar 20, 2018
- GE-Hitachi Nuclear Energy Americas LLC
- Robert Henry Cowen
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Grant
Device for closing a drive casing pipe
- Patent number 9,922,735
- Issue date Mar 20, 2018
- Areva GmbH
- Erhard Müller
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Grant
Swirler, steam separator including the swirler, and nuclear boiling...
- Patent number 9,916,909
- Issue date Mar 13, 2018
- GE-Bitachi Nuclear Energy Americas LLC
- Adrian M. Mistreanu
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
BWR feedwater sparger end bracket pin clamp
- Patent number 9,887,016
- Issue date Feb 6, 2018
- AREVA Inc.
- Fred C. Nopwaskey
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Grant
Method for protecting components of a primary system of a boiling w...
- Patent number 9,879,351
- Issue date Jan 30, 2018
- AREVA Inc.
- Bernhard Stellwag
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Reactor internal structure and method of manufacturing the same
- Patent number 9,850,581
- Issue date Dec 26, 2017
- Kabushiki Kaisha Toshiba
- Akio Sayano
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Method of storing a chimney assembly of a reactor pressure vessel d...
- Patent number 9,721,687
- Issue date Aug 1, 2017
- GE-Hitachi Nuclear Energy Americas LLC
- Robin D. Sprague
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Grant
Nuclear fuel assembly having varying spacing between fuel rods
- Patent number 9,666,311
- Issue date May 30, 2017
- AREVA NP
- Robert Koch
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Grant
Natural-circulation boiling water reactor and chimney therefor
- Patent number 9,666,312
- Issue date May 30, 2017
- Hitachi - GE Nuclear Energy, Ltd.
- Sho Kuroita
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Grant
Control rod
- Patent number 9,490,036
- Issue date Nov 8, 2016
- Westinghouse Electric Sweden AB
- Sture Helmersson
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Grant
BWR nuclear fuel assembly with non-retained partial length fuel rods
- Patent number 9,484,118
- Issue date Nov 1, 2016
- AREVA NP
- Jens Schäfer
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Grant
Low pressure reactor safety systems and methods
- Patent number 9,460,818
- Issue date Oct 4, 2016
- GE-Hitachi Nuclear Energy Americas LLC
- Mark A. Bergman
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Nuclear reactor assembly having a connection between a control rod...
- Patent number 9,362,011
- Issue date Jun 7, 2016
- Areva GmbH
- Andreas Lemm
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Reactor containment vessel and boiling water reactor power plant
- Patent number 9,318,225
- Issue date Apr 19, 2016
- Kabushiki Kaisha Toshiba
- Takashi Sato
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Control rod for a nuclear power light water reactor
- Patent number 9,230,696
- Issue date Jan 5, 2016
- Westinghouse Electric Sweden AB
- Per Seltborg
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Condensation chamber cooling system
- Patent number 9,194,629
- Issue date Nov 24, 2015
- Westinghouse Electric Germany GmbH
- Wolfgang Tietsch
- F28 - HEAT EXCHANGE IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
METHODOLOGY FOR THE ANALYSIS OF MSLB AND TSV ACOUSTIC TRANSIENTS IN...
- Publication number 20140278293
- Publication date Sep 18, 2014
- Westinghouse Electric Company LLC
- Gianluca Longoni
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Application
FEEDWATER TEMPERATURE CONTROL METHODS AND SYSTEMS
- Publication number 20140226776
- Publication date Aug 14, 2014
- GE-HITACHI NUCLEAR ENERGY AMERICAS LLC
- Stephan Craig MOEN
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Application
CONTAINMENT VENT SYSTEM WITH PASSIVE MODE FOR BOILING WATER REACTOR...
- Publication number 20140185729
- Publication date Jul 3, 2014
- Phillip Glen ELLISON
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Application
NUCLEAR REACTOR ASSEMBLY HAVING A CONNECTION BETWEEN A CONTROL ROD...
- Publication number 20140169514
- Publication date Jun 19, 2014
- AREVA GMBH
- ANDREAS LEMM
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Application
CONTROL ROD FOR NUCLEAR REACTOR AND METHOD OF MANUFACTURING CONTROL...
- Publication number 20140098925
- Publication date Apr 10, 2014
- KABUSHIKI KAISHA TOSHIBA
- Yuuji SAITO
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Application
METHOD AND SYSTEM FOR AN ALTERNATIVE BWR CONTAINMENT HEAT REMOVAL S...
- Publication number 20140072089
- Publication date Mar 13, 2014
- GE-HITACHI NUCLEAR ENERGY AMERICAS LLC
- Robert J. GINSBERG
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Application
METHOD AND SYSTEM FOR EXTERNAL ALTERNATE SUPPRESSION POOL COOLING F...
- Publication number 20140072088
- Publication date Mar 13, 2014
- GE-HITACHI NUCLEAR ENERGY AMERICAS LLC
- Robert J. GINSBERG
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Application
METHOD FOR PROTECTING COMPONENTS OF A PRIMARY SYSTEM OF A BOILING W...
- Publication number 20130272476
- Publication date Oct 17, 2013
- Bernhard Stellwag
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
LOW PRESSURE REACTOR SAFETY SYSTEMS AND METHODS
- Publication number 20130251085
- Publication date Sep 26, 2013
- Mark A. Bergman
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Application
METHOD AND APPARATUS FOR AN ALTERNATIVE SUPPRESSION POOL COOLING FO...
- Publication number 20130156145
- Publication date Jun 20, 2013
- GE-HITACHI NUCLEAR ENERGY AMERICAS LLC
- Robert Joseph Ginsberg
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Application
Condensation Chamber Cooling System
- Publication number 20130140005
- Publication date Jun 6, 2013
- Westinghouse Electric Germany GmbH
- Wolfgang Tietsch
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Application
Nuclear Reactor Vibration Monitoring Apparatus and Method of Monito...
- Publication number 20130121451
- Publication date May 16, 2013
- Hitachi-GE NUCLEAR ENERGY, LTD.
- Masahiro HIRATSUKA
- G01 - MEASURING TESTING
Information Patent Application
SAFETY/RELIEF VALVE DISCHARGE LINE HEADER IN A BOILING WATER REACTOR
- Publication number 20130094623
- Publication date Apr 18, 2013
- Institute of Nuclear Energy Research Atomic Energy Council, Executive Yuan
- JIN-SEN CHUNG
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Application
CONTROL ROD FOR A NUCLEAR POWER LIGHT WATER REACTOR
- Publication number 20130051510
- Publication date Feb 28, 2013
- Westinghouse Electric Sweden AB
- Per Seltborg
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Application
CONTROL ROD
- Publication number 20130039454
- Publication date Feb 14, 2013
- Westinghouse Electric Sweden AB
- Sture Helmersson
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Application
CONTROL ROD BLADE EXTENSION FOR A NORDIC NUCLEAR REACTOR
- Publication number 20130016803
- Publication date Jan 17, 2013
- GE-HITACHI NUCLEAR ENERGY AMERICAS, LLC
- Dennis S. Nelson
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Application
BOILING WATER REACTOR CORE AND FUEL ASSEMBLIES THEREFOR
- Publication number 20130003908
- Publication date Jan 3, 2013
- Renzou Takeda
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Application
METHOD AND APPARATUS FOR A BWR JET PUMP INLET MIXER COMPLIANT STOP
- Publication number 20120288053
- Publication date Nov 15, 2012
- GE-HITACHI NUCLEAR ENERGY AMERICAS LLC
- Robin D. Sprague
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
CONTROL ROD FOR BOILING WATER REACTOR AND METHOD OF MANUFACTURING C...
- Publication number 20120243653
- Publication date Sep 27, 2012
- Hitachi-GE Nuclear Energy, Ltd.
- Yu Kuwada
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
BWR NUCLEAR FUEL ASSEMBLY WITH NON-RETAINED PARTIAL LENGTH FUEL RODS
- Publication number 20120243652
- Publication date Sep 27, 2012
- AREVA NP
- Jens Schäfer
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
VIBRATION REDUCTION TECHNIQUES FOR JET PUMP SLIP JOINTS
- Publication number 20120219103
- Publication date Aug 30, 2012
- AREVA NP INC.
- John Joseph Lynch
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Method and apparatus for a jet pump inlet mixer integral slip joint...
- Publication number 20120170703
- Publication date Jul 5, 2012
- GE-HITACHI NUCLEAR ENERGY AMERICAS LLC
- Robin D. Sprague
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
METHOD AND APPARATUS FOR A JET PUMP THREE POINT SLIP JOINT CLAMP
- Publication number 20120170704
- Publication date Jul 5, 2012
- GE-HITACHI NUCLEAR ENERGY AMERICAS LLC
- Robin D. Sprague
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
METHOD AND APPARATUS FOR A RISER PIPE REPAIR WITH COMPRESSION
- Publication number 20120155598
- Publication date Jun 21, 2012
- GE-HITACHI NUCLEAR ENERGY AMERICAS LLC
- Bruce J. Lentner
- F22 - STEAM GENERATION
Information Patent Application
METHOD AND APPARATUS FOR AN EXPANDING SPLIT BUSHING PIPE PLUG ASSEMBLY
- Publication number 20120155599
- Publication date Jun 21, 2012
- GE-HITACHI NUCLEAR ENERGY AMERICAS LLC
- Robin D. Sprague
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
FLOW TRIPPING DEVICE
- Publication number 20120155601
- Publication date Jun 21, 2012
- Global Nuclear Fuel - Americas, LLC
- Mason D. Makovicka
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
BOILING WATER REACTOR FUEL SUPPORT CASTING FLOW LIMITER
- Publication number 20120152382
- Publication date Jun 21, 2012
- GE-HITACHI NUCLEAR ENERGY AMERICAS LLC
- Khaled M. Ewida
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Application
PROTECTION OF REACTOR CORES FROM UNSTABLE DENSITY WAVE OSCILLATIONS
- Publication number 20120140864
- Publication date Jun 7, 2012
- Yousef M. FARAWILA
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
BWR JET PUMP INLET-MIXER MAIN WEDGE WITH INSERTS
- Publication number 20120112036
- Publication date May 10, 2012
- Robin D. Sprague
- E21 - EARTH DRILLING MINING
Information Patent Application
METHOD AND APPARATUS FOR A JET PUMP SLIP JOINT INTERNAL SEAL
- Publication number 20120057992
- Publication date Mar 8, 2012
- GE-HITACHI NUCLEAR ENERGY AMERICAS LLC
- Robin D. Sprague
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Boiling water reactors

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Steam separator and nuclear boiling water reactor including the same

Fuel assembly for a nuclear power boiling water reactor

Core plate assembly, and a method of performing work on a core plat...

Core catcher and boiling water nuclear plant using the same

Sealing device for jet pump slip joints

Fuel assembly for a nuclear boiling water reactor

Method and system for external alternate suppression pool cooling f...

Nuclear plant with a containment shell and with a pressure relief s...

Control rod drive mechanism

Floating filter screen in a lower tie plate box of a nuclear fuel a...

Feedwater temperature control methods and systems

Steam separation system and nuclear boiling water reactor including...

Method and apparatus for a BWR jet pump inlet mixer compliant stop

Moderating fuel rods including metal hydride and methods of moderat...

Containment vent system with passive mode for boiling water reactor...

Device for closing a drive casing pipe

Swirler, steam separator including the swirler, and nuclear boiling...

BWR feedwater sparger end bracket pin clamp

Method for protecting components of a primary system of a boiling w...

Reactor internal structure and method of manufacturing the same

Method of storing a chimney assembly of a reactor pressure vessel d...

Nuclear fuel assembly having varying spacing between fuel rods

Natural-circulation boiling water reactor and chimney therefor

Control rod

BWR nuclear fuel assembly with non-retained partial length fuel rods

Low pressure reactor safety systems and methods

Nuclear reactor assembly having a connection between a control rod...

Reactor containment vessel and boiling water reactor power plant

Control rod for a nuclear power light water reactor

Condensation chamber cooling system

Patents Applicationslast 30 patents

METHODOLOGY FOR THE ANALYSIS OF MSLB AND TSV ACOUSTIC TRANSIENTS IN...

FEEDWATER TEMPERATURE CONTROL METHODS AND SYSTEMS

CONTAINMENT VENT SYSTEM WITH PASSIVE MODE FOR BOILING WATER REACTOR...

NUCLEAR REACTOR ASSEMBLY HAVING A CONNECTION BETWEEN A CONTROL ROD...

CONTROL ROD FOR NUCLEAR REACTOR AND METHOD OF MANUFACTURING CONTROL...

METHOD AND SYSTEM FOR AN ALTERNATIVE BWR CONTAINMENT HEAT REMOVAL S...

METHOD AND SYSTEM FOR EXTERNAL ALTERNATE SUPPRESSION POOL COOLING F...

METHOD FOR PROTECTING COMPONENTS OF A PRIMARY SYSTEM OF A BOILING W...

LOW PRESSURE REACTOR SAFETY SYSTEMS AND METHODS

METHOD AND APPARATUS FOR AN ALTERNATIVE SUPPRESSION POOL COOLING FO...

Condensation Chamber Cooling System

Nuclear Reactor Vibration Monitoring Apparatus and Method of Monito...

SAFETY/RELIEF VALVE DISCHARGE LINE HEADER IN A BOILING WATER REACTOR

CONTROL ROD FOR A NUCLEAR POWER LIGHT WATER REACTOR

CONTROL ROD

CONTROL ROD BLADE EXTENSION FOR A NORDIC NUCLEAR REACTOR

BOILING WATER REACTOR CORE AND FUEL ASSEMBLIES THEREFOR

METHOD AND APPARATUS FOR A BWR JET PUMP INLET MIXER COMPLIANT STOP

CONTROL ROD FOR BOILING WATER REACTOR AND METHOD OF MANUFACTURING C...

BWR NUCLEAR FUEL ASSEMBLY WITH NON-RETAINED PARTIAL LENGTH FUEL RODS

VIBRATION REDUCTION TECHNIQUES FOR JET PUMP SLIP JOINTS

Method and apparatus for a jet pump inlet mixer integral slip joint...

METHOD AND APPARATUS FOR A JET PUMP THREE POINT SLIP JOINT CLAMP

METHOD AND APPARATUS FOR A RISER PIPE REPAIR WITH COMPRESSION

METHOD AND APPARATUS FOR AN EXPANDING SPLIT BUSHING PIPE PLUG ASSEMBLY

FLOW TRIPPING DEVICE

BOILING WATER REACTOR FUEL SUPPORT CASTING FLOW LIMITER

PROTECTION OF REACTOR CORES FROM UNSTABLE DENSITY WAVE OSCILLATIONS

BWR JET PUMP INLET-MIXER MAIN WEDGE WITH INSERTS

METHOD AND APPARATUS FOR A JET PUMP SLIP JOINT INTERNAL SEAL