Patents by Inventor Tamas LISZKAI
Tamas LISZKAI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11300236Abstract: In an example, a raised face flange assembly, comprises an upper flange to couple to a lower flange using one or more bolts: wherein the upper flange or the lower flange comprises: a bolting face defining one or more openings for the one or more bolts, respectively; a pair of raised faces including a first raised face and a second raised face to make contact with a mating surface of the other of the upper flange or the lower flange; wherein a distance between an area of the second raised face and a plane corresponding to the bolting face is greater than a distance between an area of the first raised face and the plane to distribute contact force with a mating surface over the area of the second raised face to maintain a seal.Type: GrantFiled: December 14, 2018Date of Patent: April 12, 2022Assignee: NuScale Power, LLCInventor: Tamas Liszkai
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Publication number: 20210343432Abstract: A thermal control system for a reactor pressure vessel comprises a plate having a substantially circular shape that is attached to a wall of the reactor pressure vessel. The plate divides the reactor pressure vessel into an upper reactor pressure vessel region and a lower reactor pressure vessel region. Additionally, the plate is configured to provide a thermal barrier between a pressurized volume located within the upper reactor pressure vessel region and primary coolant located within the lower reactor pressure vessel region. One or more plenums provide a passageway for a plurality of heat transfer tubes to pass through the wall of the reactor pressure vessel. The plurality of heat transfer tubes are connected to the plate.Type: ApplicationFiled: June 17, 2021Publication date: November 4, 2021Inventors: Tamas Liszkai, Seth Cadell, Alex Kruskamp, Matthew Mallet
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Patent number: 11114209Abstract: In some embodiments, a nuclear reactor vessel comprises a containment vessel for a reactor pressure vessel (RPV); a control rod drive mechanism (CRDM) located in the containment vessel, the CRDM including drive motors configured to move control rods into and out of a nuclear reactor core located in the RPV; and a partition extending across a portion of the containment vessel configured to retain the drive motors in a separate fluid-tight barrier region within the containment vessel. Other embodiments may be disclosed and/or claimed.Type: GrantFiled: December 19, 2018Date of Patent: September 7, 2021Assignee: NuScale Power, LLCInventor: Tamas Liszkai
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Patent number: 11062811Abstract: A thermal control system for a reactor pressure vessel comprises a plate having a substantially circular shape that is attached to a wall of the reactor pressure vessel. The plate divides the reactor pressure vessel into an upper reactor pressure vessel region and a lower reactor pressure vessel region. Additionally, the plate is configured to provide a thermal barrier between a pressurized volume located within the upper reactor pressure vessel region and primary coolant located within the lower reactor pressure vessel region. One or more plenums provide a passageway for a plurality of heat transfer tubes to pass fluid through the wall of the reactor pressure vessel. The plurality of heat transfer tubes are connected to the plate.Type: GrantFiled: April 4, 2018Date of Patent: July 13, 2021Assignee: NuScale Power, LLCInventors: Tamas Liszkai, Seth Cadell, Alex Kruskamp, Matthew Mallet
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Patent number: 10964437Abstract: A nuclear reactor seismic isolation assembly includes an enclosure that defines a volume; a plastically-deformable member mounted, at least in part, within the volume; and a stretching member moveable within the enclosure to plastically-deform the plastically-deformable member in response to a dynamic force exerted on the enclosure.Type: GrantFiled: July 17, 2018Date of Patent: March 30, 2021Assignee: NuScale Power, LLCInventor: Tamas Liszkai
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Patent number: 10685752Abstract: A steam generation system may include a plurality of heat transfer tubes configured to circulate a secondary coolant of the steam generation system. The steam generation system may be thermally coupled to a reactor vessel, and the reactor vessel may be configured to house a primary coolant. Heat generated from within the reactor vessel may be transferred from the primary coolant to the secondary coolant. The steam generation system may further include an inclined tube sheet fluidly coupled to the plurality of heat transfer tubes. The inclined tube sheet may be attached to a wall of the reactor vessel in a non-horizontal orientation.Type: GrantFiled: February 10, 2015Date of Patent: June 16, 2020Assignee: NUSCALE POWER, LLCInventor: Tamas Liszkai
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Publication number: 20200096143Abstract: In an example, a raised face flange assembly, comprises an upper flange to couple to a lower flange using one or more bolts: wherein the upper flange or the lower flange comprises: a bolting face defining one or more openings for the one or more bolts, respectively; a pair of raised faces including a first raised face and a second raised face to make contact with a mating surface of the other of the upper flange or the lower flange; wherein a distance between an area of the second raised face and a plane corresponding to the bolting face is greater than a distance between an area of the first raised face and the plane to distribute contact force with a mating surface over the area of the second raised face to maintain a seal.Type: ApplicationFiled: December 14, 2018Publication date: March 26, 2020Applicant: NuScale Power, LLCInventor: Tamas LISZKAI
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Patent number: 10403407Abstract: A nuclear reactor seismic isolation assembly includes an enclosure that defines a volume; a plastically-deformable member mounted, at least in part, within the volume; and a stretching member moveable within the enclosure to plastically-deform the plastically-deformable member in response to a dynamic force exerted on the enclosure.Type: GrantFiled: February 18, 2014Date of Patent: September 3, 2019Assignee: NUSCALE POWER, LLCInventor: Tamas Liszkai
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Patent number: 10395782Abstract: A support structure for attenuating seismic forces in one or more reactor modules housed in a reactor building includes a mounting structure that may be configured to securely connect the support structure to a floor of the reactor building. A receiving area may be sized to receive a lower portion of a reactor module, and the support structure may be configured to at least partially surround the lower portion of the reactor module within the receiving area. The support structure may further include a retention system located near a top surface of the support structure. The retention system may be configured to contact the reactor module during a seismic event, and an upper portion of the reactor module may extend above the retention system without contacting the support structure.Type: GrantFiled: March 18, 2015Date of Patent: August 27, 2019Assignee: NUSCALE POWER, LLCInventors: Tamas Liszkai, Heqin Xu, Matthew Snyder, William Koski
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Patent number: 10354762Abstract: A cooling system for a reactor module includes a reactor pressure vessel that houses primary coolant and a steam generator that lowers a temperature of the reactor pressure vessel by transferring heat from the primary coolant to a secondary coolant. The steam generator releases at least a portion of the secondary coolant as steam. Additionally, the cooling system includes a containment vessel that at least partially surrounds the reactor vessel in a containment region. The containment region is dry during normal operation of the reactor module. A controller introduces a source of water into the containment region in response to a non-emergency shut down of the reactor module. The source of water is located external to the containment vessel, and the water is introduced into the containment region after the steam generator has initially lowered the temperature of the reactor pressure vessel in response to releasing the steam.Type: GrantFiled: October 26, 2015Date of Patent: July 16, 2019Assignee: NUSCALE POWER, LLCInventors: Michael Keller, Ross Snuggerud, Tamas Liszkai
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Publication number: 20190206579Abstract: In some embodiments, a nuclear reactor vessel comprises a containment vessel for a reactor pressure vessel (RPV); a control rod drive mechanism (CRDM) located in the containment vessel, the CRDM including drive motors configured to move control rods into and out of a nuclear reactor core located in the RPV; and a partition extending across a portion of the containment vessel configured to retain the drive motors in a separate fluid-tight barrier region within the containment vessel. Other embodiments may be disclosed and/or claimed.Type: ApplicationFiled: December 19, 2018Publication date: July 4, 2019Applicant: NuScale Power, LLCInventor: Tamas LISZKAI
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Publication number: 20180330833Abstract: A nuclear reactor seismic isolation assembly includes an enclosure that defines a volume; a plastically-deformable member mounted, at least in part, within the volume; and a stretching member moveable within the enclosure to plastically-deform the plastically-deformable member in response to a dynamic force exerted on the enclosure.Type: ApplicationFiled: July 17, 2018Publication date: November 15, 2018Applicant: NuScale Power, LLCInventor: Tamas LISZKAI
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Publication number: 20180226162Abstract: A thermal control system for a reactor pressure vessel comprises a plate having a substantially circular shape that is attached to a wall of the reactor pressure vessel. The plate divides the reactor pressure vessel into an upper reactor pressure vessel region and a lower reactor pressure vessel region. Additionally, the plate is configured to provide a thermal barrier between a pressurized volume located within the upper reactor pressure vessel region and primary coolant located within the lower reactor pressure vessel region. One or more plenums provide a passageway for a plurality of heat transfer tubes to pass through the wall of the reactor pressure vessel. The plurality of heat transfer tubes are connected to the plate.Type: ApplicationFiled: April 4, 2018Publication date: August 9, 2018Applicant: NuScale Power, LLC.Inventors: Tamas LISZKAI, Seth Cadell, Alex Kruskamp, Matthew Mallet
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Patent number: 9997262Abstract: A thermal control system for a reactor pressure vessel comprises a plate having a substantially circular shape that is attached to a wall of the reactor pressure vessel. The plate divides the reactor pressure vessel into an upper reactor pressure vessel region and a lower reactor pressure vessel region. Additionally, the plate is configured to provide a thermal barrier between a pressurized volume located within the upper reactor pressure vessel region and primary coolant located within the lower reactor pressure vessel region. One or more plenums provide a passageway for a plurality of heat transfer tubes to pass through the wall of the reactor pressure vessel. The plurality of heat transfer tubes are connected to the plate.Type: GrantFiled: April 24, 2014Date of Patent: June 12, 2018Assignee: NUSCALE POWER, LLCInventors: Tamas Liszkai, Seth Cadell, Alex Kruskamp, Matthew Mallett
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Patent number: 9897234Abstract: A tube support assembly for a steam generator system is disclosed herein, including a sheet or support bar configured to support a plurality of heat transfer tubes of the steam generator system and a set of projections extending from a surface of the sheet or support bar. A distance that the set of projections extend from the surface of the sheet or support bar may be greater than, or equal to, an external diameter of a heat transfer tube. The adjacent tubes of the plurality of tubes may be separated from each other by one or more projections.Type: GrantFiled: April 25, 2014Date of Patent: February 20, 2018Assignee: NUSCALE POWER, LLCInventors: William Koski, Tamas Liszkai, Alex Kruskamp, Seth Cadell, Weston Pollock
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Patent number: 9881703Abstract: A system for attenuating seismic forces includes a reactor pressure vessel containing nuclear fuel and a containment vessel that houses the reactor pressure vessel. Both the reactor pressure vessel and the containment vessel include a bottom head. Additionally, the system includes a base support to contact a support surface on which the containment vessel is positioned in a substantially vertical orientation. An attenuation device is located between the bottom head of the reactor pressure vessel and the bottom head of the containment vessel. Seismic forces that travel from the base support to the reactor pressure vessel via the containment vessel are attenuated by the attenuation device in a direction that is substantially lateral to the vertical orientation of the containment vessel.Type: GrantFiled: October 30, 2014Date of Patent: January 30, 2018Assignee: NUSCALE POWER, LLCInventors: Tamas Liszkai, Seth Cadell
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Publication number: 20180025795Abstract: A system for attenuating seismic forces includes a reactor pressure vessel containing nuclear fuel and a containment vessel that houses the reactor pressure vessel. Both the reactor pressure vessel and the containment vessel may include a bottom head. Additionally, the system may include a base support that is configured to contact a support surface on which the containment vessel is positioned in a substantially vertical orientation. An attenuation device may be located between the bottom head of the reactor pressure vessel and the bottom head of the containment vessel. Seismic forces that travel from the base support to the reactor pressure vessel via the containment vessel may be attenuated by the attenuation device in a direction that is substantially lateral to the vertical orientation of the containment vessel.Type: ApplicationFiled: October 30, 2014Publication date: January 25, 2018Inventors: Tamas LISZKAI, Seth Cadell
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Publication number: 20180005712Abstract: A thermal control system for a reactor pressure vessel comprises a plate having a substantially circular shape that is attached to a wall of the reactor pressure vessel. The plate divides the reactor pressure vessel into an upper reactor pressure vessel region and a lower reactor pressure vessel region. Additionally, the plate is configured to provide a thermal barrier between a pressurized volume located within the upper reactor pressure vessel region and primary coolant located within the lower reactor pressure vessel region. One or more plenums provide a passageway for a plurality of heat transfer tubes to pass through the wall of the reactor pressure vessel. The plurality of heat transfer tubes are connected to the plate.Type: ApplicationFiled: April 24, 2014Publication date: January 4, 2018Applicant: NuScale Power, LLCInventors: Tamas LISZKAI, Seth Cadell, Alex Kruskamp, Matthew Mallett
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Patent number: 9721682Abstract: A nuclear reactor control rod drive assembly includes a control rod drive mechanism coupled to a drive shaft and operable to bi-directionally urge the drive shaft through a portion of an inner volume of a reactor vessel at a first force; a control rod manifold coupled to the drive shaft; a plurality of control rods coupled to the control rod manifold, the plurality of control rods adjustable among a plurality of positions within the inner volume of the reactor vessel based on operation of the control rod drive mechanism; and at least one variable strength joint positioned between the control rod drive mechanism and the plurality of control rods.Type: GrantFiled: February 18, 2014Date of Patent: August 1, 2017Assignee: NUSCALE POWER, LLCInventors: Eric Paul Young, Tamas Liszkai
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Patent number: RE47965Abstract: A system for attenuating seismic forces includes a reactor pressure vessel containing nuclear fuel and a containment vessel that houses the reactor pressure vessel. Both the reactor pressure vessel and the containment vessel include a bottom head. Additionally, the system includes a base support to contact a support surface on which the containment vessel is positioned in a substantially vertical orientation. An attenuation device is located between the bottom head of the reactor pressure vessel and the bottom head of the containment vessel. Seismic forces that travel from the base support to the reactor pressure vessel via the containment vessel are attenuated by the attenuation device in a direction that is substantially lateral to the vertical orientation of the containment vessel.Type: GrantFiled: April 24, 2018Date of Patent: April 28, 2020Assignee: NUSCALE POWER LLCInventors: Tamas Liszkai, Seth Cadell