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公开(公告)号：US20240363259A1
公开(公告)日：2024-10-31
申请号：US18681816
申请日：2022-08-11
发明人： Rainer KAULBARSCH , Fabian JATUFF , Stefano CARUSO , Leo ORNOT , Marcel RIEKER , Davide PAPINI
摘要： A device for the calorimetric determination of the decay heat power of fuel elements has a calorimeter container with a coolant inlet and a coolant outlet, a line system with a coolant removal line and a coolant supply line, a feed pump, a flow measuring device, a first temperature measuring device at the coolant inlet, a second temperature measuring device at the coolant outlet, and a closing cover.
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公开(公告)号：US20240347220A1
公开(公告)日：2024-10-17
申请号：US18431787
申请日：2024-02-02
CPC分类号： G21C17/06 , G01L19/086 , G21C19/10 , H04N5/77 , G21C19/07 , G21C19/207 , H04N23/555
摘要： A fuel assembly inspection system that utilizes a pressure transducer mounted to a utility's spent fuel handling tool to detect a relative change in depth of a fuel assembly during fuel inspections. The system then wirelessly transmits the signal to a fuel inspection recording system, which converts the signal to a relative height along the fuel assembly being viewed by a camera, and displays the relative height along with the applicable fuel assembly feature being viewed by the camera (e.g., nozzle, grid, span) via a text overlay on the video image of the inspection.
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公开(公告)号：US20240221966A1
公开(公告)日：2024-07-04
申请号：US18608909
申请日：2024-03-18
发明人： Di Yun , Yiwei Zhao , Jie Qiu , Yi Le , Haibin Mu , Yijia Luo , Xinlu Gu , Shuang Xiang , Wenbo Liu
摘要： The present disclosure provides a method for pre-separating nuclides in spent fuel, comprising steps: S1. generating a temperature of 1200 to 1600° C. in a center of a fuel element, and at the same time introducing a cooling medium to an outer surface of the fuel element, to introduce a temperature difference to heat the fuel element; S2. soaking cooled spent fuel in an ionic liquid to selectively dissolve fission products and transuranic elements, so that the fission products and the transuranic elements are pre-separated from the spent fuel. The method achieves the effect of pre-separating part of the fission products and transuranic elements by physical methods, and solves the problem that homogenization in traditional post-processing technology causes obstacles to nuclide separation.
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公开(公告)号：US20230268090A1
公开(公告)日：2023-08-24
申请号：US17679784
申请日：2022-02-24
发明人： Kevin D. WATTS , Hubert H. HUIE , Aimee Lee LAVIGNE , Vincent Carl VIGLIANO , Mary Bodar CALLAHAN
摘要： A method of measuring moisture carryover (MCO) in a nuclear reactor includes placing a first gamma detector adjacent to a steam conduit configured to transport steam generated by the core. The method additionally includes detecting a first amount of carryover gamma activity of a first quantity of sodium-24 in the steam within the steam conduit with the first gamma detector. The method also includes detecting a second amount of reference gamma activity of a second quantity of sodium-24 in a reference sample of reactor water from the core with a second gamma detector. The method further includes determining a flow rate of liquid water entrained in the steam based on the first amount of carryover gamma activity detected by the first gamma detector and the second amount of reference gamma activity detected by the second gamma detector.
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公开(公告)号：US11335469B2
公开(公告)日：2022-05-17
申请号：US16448706
申请日：2019-06-21
发明人： Jorge V. Carvajal , Justin P. Schmidt , Jeffrey L. Arndt , Paul M. Sirianni , Shawn C. Stafford , Kathryn E. Metzger
IPC分类号： G21C17/06 , G21C17/112 , G08C19/16 , G21C13/093 , G21C13/087 , H04B5/00 , H04B1/04 , H04Q9/00 , G21C17/10
摘要： A dry cask storage system for spent nuclear fuel includes a detection apparatus having a resonant electrical circuit, with resonant electrical circuit being situated within an interior region of a metallic vessel wherein the SNF is situated. The detection apparatus includes a transmitter that generates an excitation pulse that causes the resonant circuit to resonate and to generate a response pulse. The resonant circuit includes an inductor that is formed with a core whose magnetic permeability varies with temperature such that the frequency of the resonant circuit varies as a function of temperature. The response pulse is then used to determine the temperature within the interior of the vessel where the SNF is situated. Pressure detection is also provided.
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公开(公告)号：US20220148746A1
公开(公告)日：2022-05-12
申请号：US17094850
申请日：2020-11-11
申请人： GRANT CHARTERS , SUDESH AGGARWAL
发明人： GRANT CHARTERS , SUDESH AGGARWAL
摘要： Disclosed is a process method and system for upfront sampling and characterization to selectively and representatively sample for activation levels of nuclear reactor core irradiated metal alloy internal components using a specialized robust hard metal reactor bit hollow tungsten carbide sampling head in conjunction with bespoke angled sampling gantry. The invention relates to the field of a nuclear reactor metal alloy vacuum hollow sampling head, sampling gantry, and retrieval system. The nuclear-activated metal alloys are drilled and sampled using a TruProBit® metal cutting drill bit. The long hollow drill bit with a hollow metal sampling head traverses the nuclear reactor metal layers and void spaces to cut and retrieve only metal alloy samples. The dry vacuumed airflow picks up the discrete incremental sample of metal filings, chips, and dust produced by the hollow metal cutting edges of the sampling head into a filter and then analyzed for radionuclides of concern.
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7.发明授权公开(公告)号：US11232876B2
公开(公告)日：2022-01-25
申请号：US16633487
申请日：2017-09-29
发明人： Mun Seog Baik , Gi Bong Kil , Kyung Hun Chang
摘要： Provided is a standard for mobile equipment for measuring structural deformation of a nuclear fuel assembly, the standard including: a fixed frame fixed to one side of measuring equipment accommodated in a container; a standard member configured to be attached to and detached from the fixed frame, to rotate with one end portion of the fixed frame as a center, and to correspond to a nuclear fuel assembly standard specification, wherein an upper plate provided with a coupling means configured to be coupled with a transport device is coupled on one end portion of the standard member, a lower plate configured to be erected upright on and fixed to one side of the measuring equipment is coupled on an opposite end portion of the standard member.
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公开(公告)号：US20210280329A1
公开(公告)日：2021-09-09
申请号：US17152008
申请日：2021-01-19
申请人： PHOENIX LLC
发明人： EVAN R. SENGBUSCH , ARNE V. KOBERNIK , ELI C. MOLL , CHRISTOPHER M. SEYFERT , ROSS F. RADEL , MARK THOMAS , JAKE HECLA
摘要： A system and method for performing active scanning on a nuclear fuel rod are provided. The system includes an electrically-driven neutron generator including an ion source, an accelerator, and a target; a moderator surrounding the neutron generator and configured to moderate neutrons generated by the neutron generator; a fuel rod channel disposed within the moderator, the fuel rod channel configured to receive a nuclear fuel rod and subject the nuclear fuel rod to a predetermined neutron flux; and a plurality of radiation detectors. When the nuclear fuel rod is subjected to the predetermined neutron flux, neutrons induce a secondary radiation of prompt and delayed gamma emissions, neutron emission, or a combination thereof that are detected by the plurality of radiation detectors to determine an amount of fissile material in the nuclear fuel rod and a spatial distribution of the fissile material along a length of the nuclear fuel rod.
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公开(公告)号：US20210118584A1
公开(公告)日：2021-04-22
申请号：US17254480
申请日：2019-06-26
申请人： FRAMATOME
发明人： Pierre WEGELER , Mourad OUNISSI
摘要： An intervention device for carrying out intervention on a nuclear fuel assembly comprises an articulated robotic arm (22) comprising a securing base (26), a terminal member (28) and at least one arm segment (30, 32) connecting the base (26) to the terminal member (28), and an intervention member (24) carried by the terminal member (28). The intervention member (24) is designed to intervene on the nuclear fuel assembly (2).
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公开(公告)号：US20210074441A1
公开(公告)日：2021-03-11
申请号：US16564150
申请日：2019-09-09
摘要： A sensor system for a fuel rod including a fuel pellet stack, the sensor system including a wireless interrogator disposed outside the fuel rod and a passive sensor component disposed within the fuel rod. The passive sensor component includes a receiver structured to receive an interrogation signal and output an excitation signal in response to receiving the interrogation signal, a reference transmitter structured to output a reference signal to the reference receiver in response to the excitation signal, a sensing transmitter structured to output a sensing signal to the sensing receiver in response to the excitation signal, and a core at least partially disposed within the sensing transmitter and coupled to move in conjunction with expansion or contraction of the fuel pellet stack, to move based on changes in pressure within the fuel rod, or to change temperature based on temperature changes within the fuel rod.
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