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公开(公告)号：US12100525B2
公开(公告)日：2024-09-24
申请号：US18216544
申请日：2023-06-29
申请人： Holtec International
发明人： Krishna P. Singh , P. Stefan Anton
摘要： An apparatus for supporting spent nuclear fuel including a plurality of wall plates arranged in an intersecting manner to define a basket apparatus extending along a longitudinal axis. The basket apparatus may include a plurality of fuel cells and a plurality of flux traps between adjacent fuel cells. A plurality of reinforcement members may be positioned in the flux traps and may extend between opposing ones of the wall plates that form the flux traps. Each of the wall plates may be a slotted wall plate. The slotted wall plates may be interlocked with one another to form the basket apparatus. Each of the slotted wall plates may include an upper edge, a lower edge, and a plurality of plate slots formed in each of the upper and lower edges. The plate slots of the slotted wall plates may receive intersecting slotted wall plates.
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公开(公告)号：US20240212873A1
公开(公告)日：2024-06-27
申请号：US18425329
申请日：2024-01-29
申请人： Holtec International
CPC分类号： G21F5/008 , B23K9/0026 , G21F5/005 , G21F5/10 , G21F5/12 , G21F9/34 , G21F9/36 , B23K2101/12 , B23K2101/125
摘要： A container system for radioactive waste and method for using the same is provided. The system includes a canister configured for holding radioactive waste and a lid system. In one embodiment, the lid system comprises a two-part lid assembly including a confinement lid and a shielded lifting lid. The confinement lid is detachably mounted to the confinement lid. In use, the lifting lid supports the confinement lid for lifting and placement on the canister. The lifting lid further shields operators while the confinement lid is mounted to the canister. Thereafter, the lifting lid is removed and may be reused for confinement lid mountings on other canisters. In one embodiment, the confinement lid is bolted to the canister. The canister may be disposed in a protective overpack for transport and storage.
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公开(公告)号：US20240170169A1
公开(公告)日：2024-05-23
申请号：US18397435
申请日：2023-12-27
IPC分类号： G21C15/257 , G21F5/10 , G21C13/00
CPC分类号： G21C15/257 , G21F5/10 , G21C13/00
摘要： A housing assembly configured to house a reactor is disclosed. The housing assembly includes a plurality of modular walls configured to surround the reactor and a passive temperature control system. The plurality of modular walls includes a first modular wall. The passive temperature control system is coupled to the first modular wall. The passive temperature control system is configured to transfer heat between the reactor and an area around the housing assembly.
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公开(公告)号：US11894152B2
公开(公告)日：2024-02-06
申请号：US17308353
申请日：2021-05-05
IPC分类号： G21C15/257 , G21F5/10 , G21C13/00
CPC分类号： G21C15/257 , G21F5/10 , G21C13/00
摘要： A housing assembly configured to house a reactor is disclosed. The housing assembly includes a plurality of modular walls configured to surround the reactor and a passive temperature control system. The plurality of modular walls includes a first modular wall. The passive temperature control system is coupled to the first modular wall. The passive temperature control system is configured to transfer heat between the reactor and an area around the housing assembly.
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公开(公告)号：US20240013944A9
公开(公告)日：2024-01-11
申请号：US17977342
申请日：2022-10-31
申请人： Holtec International
发明人： Krishna P. SINGH
摘要： A dry storage systems for radioactive nuclear waste materials may include a double-walled canister system. The canister system may include a canister having a tubular inner shell defining an internal cavity for storing nuclear waste material, a first lid sealably welded to a first end of the inner shell, a primary base plate defining a peripheral edge portion and having an annular closure flange, and an annular full thickness butt weld formed at an abutment joint between the annular closure flange and a second end of the inner shell. The inner shell, first lid, and first end closure may collectively define a sealed primary pressure retention barrier. A tubular outer shell may adjoin the inner shell. The outer shell may be welded to the canister to form a hermetically sealed secondary pressure retention barrier.
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公开(公告)号：US11837374B2
公开(公告)日：2023-12-05
申请号：US17230182
申请日：2021-04-14
申请人： TerraPower, LLC
发明人： Robert A. Corbin , Pavel Hejzlar , John E. Truax , Mark R. Werner
CPC分类号： G21F9/308 , C22C18/04 , G21C19/32 , G21F1/085 , G21F9/302 , G21C1/02 , G21F5/008 , G21F5/10 , G21F9/20
摘要： Methods and systems for stabilizing spent fuel assemblies from sodium-cooled nuclear reactors using Zamak are described herein. It has been determined that there is a synergism between Zamak and sodium that allows Zamak to form thermally-conductive interface with the sodium-wetted surfaces of the fuel assemblies. In the method, one or more spent fuel assemblies are removed from the sodium coolant pool and placed in a protective sheath. The remaining volume of the sheath is then filled with liquid Zamak. To a certain extent Zamak will dissolve and alloy with sodium remaining on the fuel assemblies. Excess sodium that remains undissolved is displaced from the sheath by the Zamak fill. The Zamak is then cooled until solid and the sheath sealed. The resulting Zamak-stabilized spent fuel assembly is calculated to have sufficient internal thermal conductivity to allow it to be stored and transported without the need for liquid cooling.
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7.发明申请公开(公告)号：US20180301234A1
公开(公告)日：2018-10-18
申请号：US15741908
申请日：2015-12-31
申请人： Tsinghua University
发明人： Jinhua WANG , Zuoyi ZHANG , Yue LI , Bin WU
摘要： A residual heat removal ventilation system for spent fuel dry storage facility of nuclear power plant includes a natural ventilation apparatus and a forced ventilation apparatus, comprising a cold air intake chamber, a hot air removal chamber, a pipeline, a ventilation heat shield cylinder, a heat removal fan, and an air cooling equipment having certain connecting relationships and being correspondingly arranged in a storeroom, an operating room and a ventilation equipment room. The system doesn't require storing spent fuel in a pool storage manner. The safety of the spent fuel doesn't rely on power equipment, thus not only reducing routine maintenance, saving energy, but also has inherent safety. Furthermore, the system can be used to cool spent fuel storage canisters within spent fuel storage facility of pebble bed high temperature gas-cooled reactor nuclear power plant, and discharge residual heat of spent fuel storage canisters to the external environment.
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公开(公告)号：US09911516B2
公开(公告)日：2018-03-06
申请号：US13727014
申请日：2012-12-26
摘要： A cooling system for spent nuclear fuel may include a device configured to generate electricity using energy emitted from the spent nuclear fuel. The cooling system may be configured to use the electricity when cooling the spent nuclear fuel. A cask for storage, transport, or storage and transport of spent nuclear fuel may include the cooling system and a container configured to hold the spent nuclear fuel. A method for cooling spent nuclear fuel may include generating electricity using energy emitted from the spent nuclear fuel, and using the electricity in a cooling system for the spent nuclear fuel when cooling the spent nuclear fuel.
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公开(公告)号：US20180053576A1
公开(公告)日：2018-02-22
申请号：US15702241
申请日：2017-09-12
申请人： Holtec International
发明人： Krishna P. Singh
摘要： A system and method for storing multiple canisters containing high level waste below grade that afford adequate ventilation of the spent fuel storage cavity. In one aspect, the invention is a ventilated system for storing high level waste emitting heat, the system comprising: an air-intake shell forming an air-intake cavity; a plurality of storage shells, each storage shell forming a storage cavity; a lid positioned atop each of the storage shells; an outlet vent forming a passageway between an ambient environment and a top portion of each of the storage cavities; and a network of pipes forming her sealed passageways between a bottom portion of the air-intake cavity and at least two different openings at a bottom portion of each of the storage cavities such that blockage of a first one of the openings does not prohibit air from flowing from the air-intake cavity into the storage cavity via a second one of the openings.
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公开(公告)号：US09896352B2
公开(公告)日：2018-02-20
申请号：US14153291
申请日：2014-01-13
申请人： AVANTech, Inc.
发明人： Tracy A. Barker , James L. Braun
IPC分类号： C02F1/42 , G21F9/06 , G21F9/12 , G21F5/002 , G21F5/10 , G21F1/12 , G21F5/14 , G21F5/005 , C02F1/44 , C02F101/00
CPC分类号： C02F1/42 , C02F1/444 , C02F2101/006 , C02F2209/11 , G21F1/125 , G21F5/002 , G21F5/005 , G21F5/10 , G21F5/14 , G21F9/06 , G21F9/12
摘要： A vessel for removing radionuclides from a liquid. The vessel comprises a shielded housing comprising an outer shell and an inner shell disposed within the outer shell. The housing defines an ion exchange chamber between the inner and outer shells. The vessel also comprises an inlet fluidly coupled with the ion exchange chamber, the inlet being configured for fluid communication with a source of the liquid, and an outlet fluidly coupled with the ion exchange chamber, the outlet being configured for fluid communication with a destination of the liquid. The vessel further comprises a first fluid passage extending between an exterior of the vessel and the inner shell and a second fluid passage extending between the exterior of the vessel and the inner shell.
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