公开(公告)号：US20220344066A1

公开(公告)日：2022-10-27

申请号：US17640278

申请日：2020-09-04

Applicant: BLYKALLA REAKTORER STOCKHOLM AB

Inventor： Peter SZAKALOS ,  Janne WALLENIUS

IPC: G21C15/247 ,  G21C1/03 ,  G21C15/14 ,  G21C1/32

Abstract: A nuclear reactor, in particular a liquid-metal-cooled nuclear reactor, includes a main vessel with a hot leg and a cold leg, the cold leg encompassing the hot leg; a core submerged in the hot leg; at least one heat exchanger; at least one primary fluid circulation pump pressurizing one of the legs; a reactor lid; a gas plenum; and an inner lid provided beneath the reactor lid to cover the pressurized leg.

公开(公告)号：US11355253B2

公开(公告)日：2022-06-07

申请号：US16933498

申请日：2020-07-20

Applicant: BWXT mPower, Inc.

Inventor： John D. Malloy, III ,  Billy E. Bingham ,  Ronald C. Watson ,  Jason G. Williams ,  Matthew W. Ales ,  James B. Inman ,  Sean M. Boyle

IPC: G21C15/18 ,  G21C1/09 ,  G21C1/32 ,  G21C15/26

Abstract: In a pressurized water reactor (PWR), emergency core cooling (ECC) responds to depressurization due to a vessel penetration break at the top of the pressure vessel by draining water from a body of water through an injection line into the pressure vessel. A barrier operates concurrently with the ECC to suppress flow of liquid water from the pressure vessel out the vessel penetration break. The barrier may comprise one or more of: (1) an injection line extension passing through the central riser to drain water into the central riser; (2) openings in a lower portion of a central riser to shunt some upward flow from the central riser into a lower portion of the downcomer annulus; and (3) a surge line providing fluid communication between a pressurizer volume at the top of the pressure vessel and the remainder of the pressure vessel which directs water outboard toward the downcomer annulus.

公开(公告)号：US20220163196A1

公开(公告)日：2022-05-26

申请号：US17527601

申请日：2021-11-16

Applicant: KEPCO ENGINEERING & CONSTRUCTION COMPANY, INC.

Inventor： See Chae JEONG ,  In Ho SONG ,  Myung Jun SONG ,  Jae Young HUH ,  Gyu Cheon LEE

IPC: F22D5/34 ,  G21C1/32 ,  G05B19/05 ,  F22D5/32

Abstract: According to the disclosure, a position of a main control valve and a position of an auxiliary control valve are adjusted. In particular, a position of the auxiliary control valve is adjusted by determining whether a change in the position of the main control valve is in a preset deadband range, thereby preventing a periodic water level fluctuation of a steam generator.

公开(公告)号：US11238998B2

公开(公告)日：2022-02-01

申请号：US16615204

申请日：2018-05-23

Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTE ,  KING ABDULLAH CITY FOR ATOMIC AND RENEWABLE ENERGY

Inventor： Youngin Kim ,  Seungyeob Ryu ,  Joohyung Moon ,  Soojai Shin ,  Seok Kim ,  Hyunjun Cho ,  Juhyeon Yoon ,  Kilsung Kwon

IPC: G21D3/04 ,  F22B35/00 ,  G21C1/32 ,  G21C9/016 ,  G21C15/12 ,  G21C15/18 ,  G21D1/00 ,  G21D5/02

Abstract: An in-vessel cooling and power generation system according to the present disclosure may include a small scale reactor vessel, a heat exchange section provided inside the reactor vessel, and formed to supply supercritical fluid to receive heat from a reactor coolant system in the reactor vessel, an electric power production section comprising a supercritical turbine formed to produce electric energy using the energy of the supercritical fluid whose temperature has increased while receiving heat from the reactor coolant system, a cooling section configured to exchange heat with the supercritical fluid discharged after driving the supercritical turbine to shrink a volume of the supercritical fluid, wherein the supercritical fluid that has received heat from the reactor coolant system in the heat exchange section is formed to circulate through the electric power production section, and the cooling section.

公开(公告)号：US11217352B2

公开(公告)日：2022-01-04

申请号：US16599758

申请日：2019-10-11

Applicant: NuScale Power, LLC

Inventor： Michael Keller ,  Ross I. Snuggerud

IPC: G21C19/07 ,  G21C19/18 ,  G21C1/32 ,  G21C13/02 ,  G21C17/10 ,  G21C19/02 ,  G21C19/32 ,  G21C1/08 ,  G21C19/20

Abstract: An in-core instrumentation system for a reactor module includes a plurality of in-core instruments connected to a containment vessel and a reactor pressure vessel at least partially located within the containment vessel. A reactor core is housed within a lower head that is removably attached to the reactor pressure vessel, and lower ends of the in-core instruments are located within the reactor core. The in-core instruments are configured such that the lower ends are concurrently removed from the reactor core as a result of removing the lower head from the reactor pressure vessel.

公开(公告)号：US11145424B2

公开(公告)日：2021-10-12

申请号：US16264112

申请日：2019-01-31

Applicant: TerraPower, LLC

Inventor： Ryan Abbott ,  Anselmo T. Cisneros ,  Kevin Kramer ,  James A. Roecker ,  Daniel J. Walter ,  Kent E. Wardle

IPC: G21C1/32 ,  G21C3/44 ,  G21C19/04 ,  G21C1/22 ,  G21C7/30 ,  G21C19/28 ,  F22B37/00 ,  G21C1/03 ,  G21C15/18 ,  G21C3/54 ,  G21D1/00 ,  G21D1/04 ,  G21C11/06

Abstract: A molten chloride fast reactor (MCFR) includes a plurality of reflectors defining a central core having a core geometric center. A flow channel fluidically connected to the central core. The flow channel includes an outlet flow channel downstream of the central core and an inlet flow channel upstream from the central core. A primary heat exchanger (PHX) disposed outside the central core and between the outlet flow channel and the inlet flow channel. The MCFR also includes a decay heat heat exchanger (DHHX). At least a portion of the DHHX is disposed above the core geometric center, and a fuel salt is configured to circulate at least partially through the outlet flow channel, the DHHX, the PHX, the inlet flow channel, and the central core.

公开(公告)号：US11101047B2

公开(公告)日：2021-08-24

申请号：US16578364

申请日：2019-09-22

Applicant: TERRESTRIAL ENERGY USA, Inc.

Inventor： John H. Kutsch ,  Anthonius Cornelis Rodenburg

IPC: G21C3/54 ,  G21C1/22 ,  F28D20/00 ,  G21D9/00 ,  G21D5/06 ,  G21C1/32 ,  F28D20/02 ,  F03G6/06

Abstract: The power plant system includes a molten salt reactor assembly, a thermocline unit, phase change heat exchangers, and process heat systems. The thermocline unit includes an insulated tank, an initial inlet, a plurality of zone outlets, and a plurality of gradient zones corresponding to each zone outlet and being stacked in the tank. Each gradient zone has a molten salt portion at a portion temperature corresponding to the molten salt supply from the molten salt reactor being stored in the tank and stratified. The molten salt portions at higher portion temperatures generate thermal energy for process heat systems that require higher temperatures, and molten salt portions at lower portion temperatures generate thermal energy for process heat systems that require lower temperatures. The system continuously pumps the molten salt supply in controlled rates to deliver the heat exchange fluid supply to perform work in the corresponding particular process heat system.

公开(公告)号：US11075013B2

公开(公告)日：2021-07-27

申请号：US16690694

申请日：2019-11-21

Applicant: TerraPower, LLC

Inventor： Ryan Abbott ,  Anselmo T. Cisneros, Jr. ,  Mark R. Werner

IPC: G21C1/32 ,  G21C3/54 ,  G21C5/12 ,  G21C1/04 ,  G21C3/04 ,  G21C5/10 ,  G21C5/16 ,  G21C11/08 ,  G21C1/22

Abstract: This disclosure describes various configurations and components of a molten fuel fast or thermal nuclear reactor in which one or more primary heat exchangers are located above the reactor core of the nuclear reactor.

公开(公告)号：US11056249B2

公开(公告)日：2021-07-06

申请号：US16153289

申请日：2018-10-05

Applicant: BWXT mPower, Inc.

Inventor： Scott J. Shargots

IPC: G21C7/12 ,  G21C7/14 ,  G21C7/16 ,  G21C1/32 ,  G21C7/08 ,  G21C7/36 ,  G21C13/00 ,  G21C15/243 ,  G21C17/116 ,  G21C1/08

Abstract: An apparatus having a nuclear reactor comprising a pressure vessel containing primary coolant water and further containing a nuclear reactor core comprising fissile material, a mounting/electrical distribution plate secured entirely within the pressure vessel and configured to be submerged in the primary coolant, a set of control rod drive mechanism (CRDM) units mounted directly on the mounting/electrical distribution plate, and a plurality of cable modules mounted in receptacles of the mounting/electrical distribution plate wherein each cable module includes mineral insulated (MI) cables connected with one or more of the CRDM units, the cable module including its MI cables being removable as a unit from the receptacle of the mounting/electrical distribution plate.

公开(公告)号：US10910118B2

公开(公告)日：2021-02-02

申请号：US15738411

申请日：2016-06-28

Applicant: SOCIETE TECHNIQUE POUR L'ENERGIE ATOMIQUE

Inventor： Michel Brun

IPC: G21C17/116 ,  G21C13/036 ,  G21C13/028 ,  G21C1/32

Abstract: An electrical penetration assembly for a nuclear reactor vessel, mountable in an aperture of a nuclear reactor vessel, includes a penetration body including first and second ends to be positioned, respectively, inside and outside the vessel; a sealed electrical connector providing a first seal for the electrical penetration assembly, the sealed connector insulating the penetration body at the first end; a feed-through carrier flange having a plurality of unitary electrical feed-throughs, each unitary feed-through allowing a single electrical conductor to pass therethrough, thereby ensuring continuity of the electrical connections, each unitary feed-through being individually insulated by an individual insulator providing a second seal, the unitary feed-throughs insulating the penetration body at the second end; and an anti-ejection device formed by the engagement between a narrowed portion provided at each unitary feed-through and a shoulder that is larger than the narrowed portion and provided on each of the electrical conductors.