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公开(公告)号：US20240404716A1
公开(公告)日：2024-12-05
申请号：US18803233
申请日：2024-08-13
Applicant: NuScale Power, LLC
Inventor： Allyson Callaway , Ben Bristol , Kenneth Rooks , Larry Linik
IPC: G21C7/12 , F22B35/00 , G21C1/02 , G21C7/08 , G21C7/22 , G21C7/24 , G21C9/02 , G21C9/033 , G21C13/02 , G21D1/00 , G21D3/02 , G21D3/14 , G21D3/16 , G21D3/18 , G21D5/08
Abstract: A reactor vessel that includes a reactor core mounted within a volume of the reactor vessel, the reactor core comprising one or more nuclear fuel assemblies configured to generate a nuclear fission reaction, a riser positioned above the reactor core, the riser forming a primary coolant flow path, a steam generator thermally coupled to the riser, the steam generator communicatively coupled to a steam turbine through a steam inlet that includes a steam inlet valve, a secondary coolant flow path that extends through the steam generator, the secondary coolant flow path coupled to a coolant pump, and a control system coupled to both the steam inlet valve and the coolant pump, the control system configured to control a power output of the nuclear fission reaction by adjusting one or more parameters of the steam inlet valve or the coolant pump.
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公开(公告)号：US11862354B2
公开(公告)日：2024-01-02
申请号：US18044479
申请日：2021-09-01
Applicant: Ian Richard Scott
Inventor： Ian Richard Scott
CPC classification number: G21C7/22 , G21C7/02 , G21C7/24 , G21C7/32 , G21C1/24 , G21C3/54 , G21C15/247 , G21C15/26
Abstract: A passive nuclear reactor control device. The passive nuclear reactor control device comprises a sealed chamber, which comprises a reservoir and a tube in fluid communication with the reservoir. A molten salt is within the sealed chamber, the molten salt being a eutectic mixture of a monovalent metal halide, and a fluoride or chloride of one or more lanthanides and/or a fluoride or chloride of hafnium. A gas is within the sealed chamber, and the gas does not react with the molten salt.
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公开(公告)号：US11779702B2
公开(公告)日：2023-10-10
申请号：US16621289
申请日：2018-08-28
Applicant: BAYER HEALTHCARE LLC
Inventor： William Barone , Michael Spohn , Chelsea Marsh , Michael McDermott , John Volkar
IPC: A61M5/168 , A61M5/00 , A61M5/14 , A61M5/145 , A61M5/142 , G21C7/10 , G21C7/24 , G21C1/08 , G21C3/07 , G21C3/328 , G21C11/08 , C23C30/00
CPC classification number: A61M5/16827 , A61M5/007 , A61M5/1408 , A61M5/14546 , A61M5/14566 , A61M5/16854 , G21C7/10 , G21C7/24 , A61M2005/14208 , A61M2205/3341 , C23C30/00 , G21C1/08 , G21C3/07 , G21C3/328 , G21C11/08
Abstract: A method for dynamic pressure control during a multiphase injection is described wherein the pressures of fluids in the various reservoirs of a fluid delivery system are controlled to provide desired fluid delivery parameters. The methods include advancing the first drive member to expel the first fluid from the first reservoir into a conduit, wherein the fluid is pressurized to a first fluid pressure; measuring the first fluid pressure to provide a target value; while the second reservoir is in fluid isolation from the conduit, advancing or retracting the second drive member to increase or decrease the fluid pressure of the second fluid in the second reservoir to the target value; placing the second reservoir in fluid communication with the conduit; and advancing the second drive member to expel the second fluid from the second reservoir into the conduit.
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公开(公告)号：US11430578B2
公开(公告)日：2022-08-30
申请号：US16850251
申请日：2020-04-16
Applicant: Westinghouse Electric Company LLC
Inventor： Michael D. Heibel
IPC: G21C17/104 , G21C17/108 , G21D3/00 , G21C9/02 , G21C7/22 , G21C7/24 , G21C19/28
Abstract: A subcritical reactivity monitor that utilizes one or more primarily gamma sensitive (prompt responding) self-powered detector style radiation measurement devices located within the core of a nuclear reactor to determine the amount that the reactor multiplication factor (Keff) is below the reactivity required to achieve or maintain a self-sustaining nuclear chain reaction. This invention utilizes measured changes in the self-powered detectors' current(s) to allow a reactor operator to measure the value of Keff at essentially any desired interval while the reactor is shutdown with a Keff value less than the critical value of 1.0. This invention will enable integration of the output of the value of Keff directly into the Reactor Protection System, which will enable the elimination of the operational and core design analysis constraint costs associated with the current Boron Dilution Accident prevention methodology and enable automatic control of the Chemical Volume Control System.
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公开(公告)号：US10692611B2
公开(公告)日：2020-06-23
申请号：US15444265
申请日：2017-02-27
Applicant: Oklo Inc.
Inventor： Jacob DeWitte , Joshua G. Richard
Abstract: System and methods are disclosed for controlling a nuclear reactor that uses fuel having plutonium-239. The nuclear reactor includes a neutron moderator, such as ZrH1.6, which behaves as an Einstein oscillator and increases the energy of thermal neutrons into the Pu-239 neutron absorption resonance as the temperature of the nuclear reactor increases. A neutron absorbing element with neutron absorption around 0.3 eV is added to the nuclear reactor to suppress any reactivity gain that can occur due to the increase in temperature. The amount of the neutron absorbing element to be added to the nuclear reactor is calculated such that the reactivity gain that may occur at any time during the life of the fuel is suppressed.
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公开(公告)号：US10672522B2
公开(公告)日：2020-06-02
申请号：US14617144
申请日：2015-02-09
Applicant: Westinghouse Electric Company LLC
Inventor： Michael D. Heibel
Abstract: A magneto-rheological filter/reflector that controls the transmissivity of any form of electromagnetic or particulate radiation through the filter by varying discrete electromagnetic fields across a magneto-rheological fluid. In one embodiment, the filter/reflector controls the rate of the nuclear reaction within the core of a reactor without any moving parts.
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公开(公告)号：US20190315498A1
公开(公告)日：2019-10-17
申请号：US15955596
申请日：2018-04-17
Applicant: HARDY ENGINEERING & MANUFACTURING, INC.
Inventor： Richard HARDY , Jonathan HARDY , Anna E. HARDY
IPC: B64G1/40 , F02K9/42 , F02K9/46 , F02K9/64 , F02K9/70 , F02K9/97 , G21C3/60 , G21C7/24 , G21C19/18
Abstract: A fission based nuclear thermal propulsion rocket engine. An embodiment provides a source of fissionable material such as plutonium in a carrier fluid having neutron moderating constituents, such as hydrogen and/or carbon, therein. In various embodiments, the carrier fluid may be methane, or ethane, or a combination thereof. A neutron source is provided, such as from a neutron beam generator. By way of engine design geometry, various embodiments may provide for intersection of neutrons with the fissionable material injected by way of the carrier fluid, while in a reactor provided in the form of a reaction chamber. Impact of neutrons on fissionable material results in a nuclear fission in sub-critical mass reaction conditions in the reactor, resulting in release of heat energy to the materials within the reactor. The reactor is sized and shaped to receive the reactants and an expandable fluids such as hydrogen, and to confine heated and pressurized gases for discharge out through a throat, into a rocket engine expansion nozzle for propulsive discharge. The design provides a rocket engine with a specific impulse in the range of from about eight hundred (800) seconds to about twenty five hundred (2500) seconds.
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公开(公告)号：US20130051510A1
公开(公告)日：2013-02-28
申请号：US13696525
申请日：2011-04-08
Applicant: Per Seltborg , Lars Hallstadius , Björn Rebensdorff
Inventor： Per Seltborg , Lars Hallstadius , Björn Rebensdorff
Abstract: The invention concerns a control rod configured for a nuclear power light water reactor of the BWR or PWR kind. The control rod contains absorber material. At least 50%, with respect to weight, of the absorber material that is in the control rod is in the form of hafnium hydride. The invention also concerns the use of such a control rod during operation in a nuclear power light water reactor of the BWR or PWR kind.
Abstract translation: 本发明涉及一种配置用于BWR或PWR类型的核电轻水反应堆的控制棒。 控制棒包含吸收材料。 对照棒中的吸收材料的重量至少为50重量％为氢化铪的形式。 本发明还涉及在BWR或PWR类型的核电轻水反应堆中操作期间使用这种控制棒。
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公开(公告)号：US07335902B2
公开(公告)日：2008-02-26
申请号：US10918229
申请日：2004-08-13
Applicant: Rengarajan Soundararajan
Inventor： Rengarajan Soundararajan
CPC classification number: G21F9/36 , C08G18/2018 , C08G18/542 , C08G18/7664 , C08K3/08 , C09D175/04 , F23G5/027 , F23G7/003 , F23G2201/301 , F23G2201/302 , F23G2209/18 , G21F1/106 , G21F9/06 , G21F9/30 , G21F9/305 , G21F9/307 , C08L75/04
Abstract: A urethane based polymer composition is provided that exhibits superior shielding properties during and after exposure to high level radiation. The composite is formed by mixing a liquid isocyanate monomer, preferably 4,4′-diisocyanate monomer with a liquid phenolic resin, preferably phenol formaldehyde resin, and a phosphate ester flame retardant. An optional pyridine catalyst may be added to shorten the cure time. The resulting composition cures at room temperature and can be utilized in several manners, including spraying or pouring the composition prior to curing over radioactive material to prevent leakage of radiation. The uncured composite can be sprayed on the walls of a room or container to prevent leakage of radiation and can also be used to contain radiation prior to demolition. The uncured composite can also be molded into bricks or panels for use in construction. In a preferred embodiment, the polymer composition further incorporates radioactive waste, namely depleted uranium oxide, and can be used in conjunction with specially designed containers for storing radioactive material. The resulting polymer/waste composition cures at room temperature and does not deteriorate or suffer structural damage when exposed to higher levels of gamma radiation, nor do the mechanical or chemical properties undergo any detectable change. The composition is resistant to biodegradation and combustion, and does not creep or shrink during thermal cycling.
Abstract translation: 提供了一种聚氨酯基聚合物组合物，其在暴露于高水平辐射期间和之后显示优异的屏蔽性能。 复合材料通过将液体异氰酸酯单体，优选4,4'-二异氰酸酯单体与液体酚醛树脂，优选苯酚甲醛树脂和磷酸酯阻燃剂混合而形成。 可以加入任选的吡啶催化剂以缩短固化时间。 所得组合物在室温下固化并且可以以几种方式使用，包括在固化放射性材料之前喷涂或浇注组合物以防止辐射泄漏。 未固化的复合材料可以喷涂在房间或容器的壁上，以防止辐射泄漏，并且还可以用于在拆除之前容纳辐射。 未固化的复合材料也可以模制成砖或面板用于施工。 在优选的实施方案中，聚合物组合物还包含放射性废物，即贫化铀氧化物，并且可以与用于储存放射性物质的专门设计的容器结合使用。 所得聚合物/废物组合物在室温下固化，并且在暴露于较高水平的γ辐射时不会劣化或遭受结构损伤，机械或化学性质也不会发生任何可检测的变化。 该组合物耐生物降解和燃烧，并且在热循环期间不会蠕变或收缩。
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公开(公告)号：US5754608A
公开(公告)日：1998-05-19
申请号：US314491
申请日：1994-09-28
Applicant: Luc Pillet
Inventor： Luc Pillet
CPC classification number: G21C7/10 , G21Y2002/201 , G21Y2004/10 , Y02E30/39
Abstract: The control cluster is usable for power regulation and for load following. It comprises a spider from which are suspended rods containing a column of neutron-absorbing material. The neutron-absorbing material in at least some rods is stainless steel in lower part of the rod and, in an upper part of the rod having a length equal to 20 and 40% of the height of the column of absorbing material, another material exhibiting an interference neutron absorption which is much higher than that of stainless steel, for instance Ag-In-Cd.
Abstract translation: 控制集群可用于功率调节和负载跟随。 它包括一个蜘蛛，其中是含有一列中子吸收材料的悬挂杆。 至少一些棒中的中子吸收材料在杆的下部是不锈钢，并且在杆的上部具有等于吸收材料柱的高度的20和40％的长度，另外一种材料表现出 干涉中子吸收比不锈钢（例如Ag-In-Cd）高得多。
