公开(公告)号：US12033764B2

公开(公告)日：2024-07-09

申请号：US17083582

申请日：2020-10-29

Applicant: Holtec International

Inventor： Krishna P. Singh ,  Stephen J. Agace

IPC: G21C19/07 ,  G21F5/012 ,  G21F5/00 ,  G21F5/005 ,  G21F5/008 ,  G21F5/10 ,  G21F5/12

CPC classification number: G21C19/07 ,  G21F5/012 ,  G21F5/00 ,  G21F5/005 ,  G21F5/008 ,  G21F5/10 ,  G21F5/12

Abstract: A fuel rack comprises a base plate and vertically-extending hexagonal tubes. Each tube defines a cell. A top surface of the base plate forms a floor of each cell. Adjustable height pedestals can be connected to a bottom surface of the base plate. Each pedestal includes a tool engagement portion in a top surface of a peg. Rotation of the peg causes pedestal height adjustment. Each peg is aligned with a hole in a cell floor. A tool can extend through the hole to adjust the height of the pedestal. Vertically elongated spacing rods are positioned in gaps between adjacent hexagonal tubes to maintain the gaps. Each spacing rod is plug welded to a corner edge of three adjacent hexagonal tubes at a juncture via holes located in the corner edges of each of the three adjacent hexagonal tubes.

公开(公告)号：US11881325B2

公开(公告)日：2024-01-23

申请号：US17073712

申请日：2020-10-19

Applicant: Medtronic, Inc.

Inventor： Andreas Fenner ,  David A. Ruben ,  Anna J. Malin ,  Paul F. Gerrish ,  Bruce C. Fleischhauer ,  Larry E. Tyler

IPC: G21H1/02 ,  G21C19/07 ,  G21H1/04 ,  G21H1/06

CPC classification number: G21H1/02 ,  G21C19/07 ,  G21H1/04 ,  G21H1/06 ,  Y10T29/49117

Abstract: Various embodiments of a nuclear radiation particle power converter and method of forming such power converter are disclosed. In one or more embodiments, the power converter can include first and second electrodes, a three-dimensional current collector disposed between the first and second electrodes and electrically coupled to the first electrode, and a charge carrier separator disposed on at least a portion of a surface of the three-dimensional current collector. The power converter can also include a hole conductor layer disposed on at least a portion of the charge carrier separator and electrically coupled to the second electrode, and nuclear radiation-emitting material disposed such that at least one nuclear radiation particle emitted by the nuclear radiation-emitting material is incident upon the charge carrier separator.

公开(公告)号：US11834839B2

公开(公告)日：2023-12-05

申请号：US17049649

申请日：2019-02-25

Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.

Inventor： Takao Ito ,  Hayao Kurono ,  Shuhei Dobara

IPC: E04F13/08 ,  G21C19/07 ,  E04B1/16 ,  B65D90/04 ,  B65D90/08

CPC classification number: E04F13/0862 ,  B65D90/043 ,  B65D90/08 ,  E04B1/167 ,  E04F13/0889 ,  G21C19/07

Abstract: A lining method includes fixing a backing strip in a frame shape to a concrete surface of already-placed concrete so that the backing strip protrudes from the concrete surface; disposing a filler inside a frame of the backing strip; making edges of a plurality of lining plates butt against each other at a position of the backing strip to cover the backing strip and the concrete surface; and joining the edges of the lining plates by seal welding.

公开(公告)号：US20230366719A1

公开(公告)日：2023-11-16

申请号：US18029191

申请日：2021-09-27

Applicant: KOREA HYDRO & NUCLEAR POWER CO., LTD.

Inventor： Seung Chan LEE ,  Duk-joo YOON ,  Yo-Han KIM

IPC: G01F23/296 ,  G01D11/30 ,  G21C19/07

CPC classification number: G01F23/2961 ,  G01D11/30 ,  G21C19/07

Abstract: A water level measurement system according to an embodiment of the present invention includes a support pipe installed in a water tank filled with a fluid to measure a water level and extending in a depth direction of the water tank, a support rod disposed in an inner space of the support pipe and extending in the depth direction of the water tank, a plurality of ultrasonic probes attached to the support rod and generating ultrasonic waves, and a water level calculator connected to the plurality of ultrasonic probes and calculating the water level in the water tank, wherein the water level calculator calculates the water level of the water tank by using an order of the ultrasonic probes disposed at a highest position among the plurality of ultrasonic probes that detect a signal of a reflected wave reflected from the support pipe.

公开(公告)号：US20180144835A1

公开(公告)日：2018-05-24

申请号：US15822704

申请日：2017-11-27

Applicant: SMR INVENTEC, LLC

Inventor： Krishna P. SINGH ,  P. Stefan ANTON ,  Peter STEFANOVIC

IPC: G21C3/30 ,  G21C1/06 ,  G21C3/32 ,  G21C5/14 ,  G21C11/06

CPC classification number: G21C3/30 ,  G21C1/06 ,  G21C3/32 ,  G21C3/3315 ,  G21C5/06 ,  G21C5/14 ,  G21C11/06 ,  G21C19/07 ,  G21C19/18 ,  G21C19/32 ,  G21F5/008 ,  G21F5/012 ,  G21F5/12 ,  G21F5/14 ,  Y02E30/40 ,  Y10T29/49947

Abstract: A portable nuclear fuel cartridge comprising a unitary support structure and a plurality of nuclear fuel assemblies that collectively form a nuclear fuel core. The nuclear fuel core is integrated into the unitary support structure to collectively form a self-supporting assemblage than can be lifted as a single unit. In another aspect, the invention is a method of fueling and/or defueling a nuclear reactor utilizing a nuclear fuel cartridge that is loaded and/or unloaded from the nuclear reactor as a single unit. In another aspect, a nuclear reactor core is provided that comprises a nuclear fuel core comprising: a plurality of first nuclear fuel assemblies, each of the plurality of first nuclear fuel assemblies having a first transverse cross-sectional configuration; and a plurality of second nuclear fuel assemblies, each of the plurality of second nuclear fuel assemblies having a second transverse cross-sectional configuration that is different than the first transverse cross-sectional configuration.

公开(公告)号：US09916910B2

公开(公告)日：2018-03-13

申请号：US14620465

申请日：2015-02-12

Applicant: SMR Inventec, LLC

Inventor： Krishna P. Singh ,  Joseph Rajkumar

IPC: G21C15/18 ,  G21C19/07 ,  G21C19/04 ,  G21C13/02 ,  G21C11/00

CPC classification number: G21C15/18 ,  G21C11/00 ,  G21C13/02 ,  G21C19/04 ,  G21C19/07 ,  Y02E30/40

Abstract: A passively-cooled spent nuclear fuel pool system comprising: a spent nuclear fuel pool comprising a body of liquid water having a surface level, at least one spent nuclear fuel rod submerged therein that heats the water; a lid covering the spent nuclear fuel pool to create a hermetically sealed vapor space between the surface level and the lid; and a passive heat exchange sub-system including a riser conduit comprising first and second riser inlet sections and a primary riser section that receives water vapor therefrom. Each riser inlet section has a respective inlet positioned in a respective section of the vapor space. A downcomer receives and condenses water vapor from the primary section forming condensed water vapor. A return conduit fluidly coupled to the downcomer and having an outlet located in the body of liquid water returns the condensed water vapor thereto.

公开(公告)号：US20180061511A1

公开(公告)日：2018-03-01

申请号：US15612743

申请日：2017-06-02

Applicant: TerraPower, LLC

Inventor： Peter W. Gibbons ,  Stephen W. Hiller ,  Calen Kaneko ,  Owen Dean Nelson ,  Ashok Odedra ,  P. Harley Park

IPC: G21C7/10 ,  G21C17/04 ,  G21C1/02 ,  G21C19/50 ,  G21C7/32

CPC classification number: G21C7/10 ,  G21C1/026 ,  G21C7/08 ,  G21C7/32 ,  G21C7/34 ,  G21C17/042 ,  G21C19/065 ,  G21C19/07 ,  G21C19/205 ,  G21C19/50 ,  Y02E30/34

Abstract: A rod transfer assembly has an outer rotating plug. A pick-up arm assembly extends from the outer rotating plug and includes a pivoting arm. An inner rotating plug is disposed off-center from and within the outer rotating plug and is rotatable independent of a rotation of the outer rotating plug. An access port rotating plug is disposed off-center from and within the inner rotating plug and is rotatable independent of rotation of the outer and inner rotating plugs. A pull arm extends from the access port rotating plug.

公开(公告)号：US20180047469A1

公开(公告)日：2018-02-15

申请号：US15729376

申请日：2017-10-10

Applicant: SMR Inventec, LLC

Inventor： Krishna P. Singh ,  Joseph Rajkumar

IPC: G21C15/18 ,  G21C9/012 ,  G21C13/02 ,  G21C11/02

CPC classification number: G21C15/12 ,  G21C9/012 ,  G21C11/02 ,  G21C11/088 ,  G21C13/02 ,  G21C15/18 ,  G21C15/26 ,  G21C19/07 ,  Y02E30/40

Abstract: A component cooling water system for a nuclear power plant. In one embodiment, the system includes an inner containment vessel housing a nuclear reactor and an outer containment enclosure structure. An annular water reservoir is formed between the containment vessel and containment enclosure structure which provides a heat sink for dissipating thermal energy. A shell-less heat exchanger is provided having an exposed tube bundle immersed in water held within the annular water reservoir. Component cooling water from the plant flows through the tube bundle and is cooled by transferring heat to the annular water reservoir. In one non-limiting embodiment, the tube bundle may be U-shaped.

公开(公告)号：US09786396B2

公开(公告)日：2017-10-10

申请号：US13488437

申请日：2012-06-04

Applicant: Claudio Filippone

Inventor： Claudio Filippone

IPC: G21C19/07 ,  G21D5/02

CPC classification number: G21C19/07 ,  G21D5/02

Abstract: Various embodiments of a decay heat conversion to electricity system and related methods are disclosed. According to one exemplary embodiment, a decay heat conversion to electricity system may include a spent fuel rack configured to pressurize spent fuel bundles to obtain superheated vapor to drive a turbine-driven pump and fast alternator all submerged with the spent fuel rack and positioned at the bottom of the spent fuel pool for conversion of electricity distributed outside of the spent fuel pool via cables without impairing spent fuel pool operations.

公开(公告)号：US20170047133A1

公开(公告)日：2017-02-16

申请号：US15306324

申请日：2015-04-23

Applicant: CERADYNE, INC.

Inventor： Kevin S. Cook ,  Beth D. Bosley

IPC: G21C19/07 ,  G21C19/40

CPC classification number: G21C19/07 ,  G21C19/40

Abstract: A method of storing nuclear fuel is described. In some cases, the method includes submerging at least a portion of a nuclear fuel rod in a storage pool containing an aqueous solution including at least one of polyhedral boron hydride anions or carborane anions. In some cases, the method includes adding a salt having a polyhedral boron hydride anion or carborane anion to a storage pool containing water and at least a portion of a nuclear fuel rod submerged in it. The method may include both of these. A storage pool is also described. The storage pool includes an aqueous solution having at least one of polyhedral boron hydride anions or carborane anions with at least a portion of a nuclear fuel rod submerged in the aqueous solution. A method of servicing a nuclear reactor core is also described.

Abstract translation: 描述了存储核燃料的方法。 在一些情况下，该方法包括将核燃料棒的至少一部分淹没在包含多面体硼氢化物阴离子或碳硼烷阴离子中的至少一种的水溶液的储存池中。 在一些情况下，该方法包括向含有水的储存池和浸没在其中的核燃料棒的至少一部分添加具有多面体硼氢化物阴离子或碳硼烷阴离子的盐。 该方法可以包括这两者。 还描述了一个存储池。 储存池包括具有多面体硼氢化物阴离子或碳硼烷阴离子中的至少一种的水溶液，其中至少一部分核燃料棒浸没在水溶液中。 还描述了维修核反应堆堆芯的方法。