公开(公告)号：US3727060A

公开(公告)日：1973-04-10

申请号：US3727060D

申请日：1970-08-13

申请人： TRANSNUCLEAIRE SOC TRANSPORTS

发明人： BLUM P

IPC分类号： G21F5/00 ,  F16L3/13 ,  G21F5/10 ,  G21F1/02

CPC分类号： F16L3/13 ,  G21F5/10

摘要： The package has a composite wall comprising from inside to outside, a inner shell surrounding the useful cavity, a layer of dense material for protection against gamma radiations and an outer shell. A layer of neutron-absorbing material is arranged against the other surface of the outer shell, heat conducting elements, such as fins or pins, being fixed against the outer shell and projecting at the surface of the layer.

摘要翻译： 该包装具有从内部到外部包括围绕有用空腔的内壳，用于防止伽马辐射的保护层的致密材料层和外壳的复合壁。 一层中子吸收材料被布置成抵靠外壳的另一个表面，诸如散热片或销的导热元件固定在外壳上并在层的表面突出。

公开(公告)号：US3113215A

公开(公告)日：1963-12-03

申请号：US9203861

申请日：1961-02-27

申请人： STANRAY CORP

发明人： ALLEN JOHN W

IPC分类号： G21F5/10

CPC分类号： G21F5/10

公开(公告)号：US3073961A

公开(公告)日：1963-01-15

申请号：US3485060

申请日：1960-06-08

申请人： NACHBAR HENRY D ,  BIGGS BILLY B ,  TARLELLO PAUL J ,  GEORGE KURT O

发明人： NACHBAR HENRY D ,  BIGGS BILLY B ,  TARLELLO PAUL J ,  GEORGE KURT O

IPC分类号： G21F5/10

CPC分类号： G21F5/10

公开(公告)号：US12051517B2

公开(公告)日：2024-07-30

申请号：US17977342

申请日：2022-10-31

申请人： Holtec International

发明人： Krishna P. Singh

IPC分类号： B23K5/00 ,  B23K5/02 ,  G21F5/00 ,  G21F5/005 ,  G21F5/10 ,  G21F5/12 ,  G21F9/34 ,  G21F5/012 ,  G21F9/36

CPC分类号： G21F5/12 ,  B23K5/02 ,  G21F5/005 ,  G21F5/10 ,  G21F9/34 ,  G21F5/012 ,  G21F9/36

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.

公开(公告)号：US20240071641A1

公开(公告)日：2024-02-29

申请号：US18372353

申请日：2023-09-25

申请人： HOLTEC INTERNATIONAL

发明人： Krishna P. SINGH

IPC分类号： G21F9/34 ,  G21F1/12 ,  G21F5/008 ,  G21F5/10 ,  G21F5/12

CPC分类号： G21F9/34 ,  G21F1/125 ,  G21F5/008 ,  G21F5/10 ,  G21F5/12

摘要： A containment enclosure for shielding an outer cask containing an inner canister loaded with nuclear waste such as spent fuel rods. The enclosure includes a lower base portion at least partially embedded in a concrete pad and an upper radiation shielding portion defined by a shield jacket coupled to and supported by the lower base portion at a circumferential joint. Cavities of the base and shielding portions collectively define a contiguous containment space for the cask. A portion of the cask resides in each of the base and shielding portions which completely enclose and shield the cask to minimize radiation dosage of personnel in the environment surrounding the cask. The cask is cooled by a natural convectively-driven ambient cooling air ventilation system including air inlets at the circumferential joint of the enclosure. The concrete pad may be part of a spent nuclear fuel storage installation comprising plural cask containment enclosures.

公开(公告)号：US11881323B2

公开(公告)日：2024-01-23

申请号：US17746804

申请日：2022-05-17

申请人： HOLTEC INTERNATIONAL

发明人： Krishna P. Singh ,  Stephen J. Agace

IPC分类号： G21F5/10 ,  G21F9/34

CPC分类号： G21F5/10 ,  G21F9/34

摘要： A passively cooled stackable nuclear waste storage system includes an at least partially below grade cavity enclosure container (CEC) and above grade cask. Each vessel includes a cavity holding a nuclear waste canister containing spent nuclear fuel or other high-level radioactive wastes. The CEC is founded on a below grade concrete base pad and cask is mounted on an above-grade concrete top pad in a vertically stacked arrangement. The upper cask comprises a perforated baseplate which establishes fluid communication between cavities of both casks and is configured to prevent radiation shine. One or both vessels include air inlets which draw ambient cooling air into their respective cavities for cooling the nuclear waste. Air heated in the lower CEC rises into the upper cask through the baseplate where it mixes with air drawn into the cask and is returned to atmosphere. The system increases storage capacity of new or existing facilities.

公开(公告)号：US20230343478A1

公开(公告)日：2023-10-26

申请号：US18216544

申请日：2023-06-29

申请人： Holtec International

发明人： Krishna P. SINGH ,  Paul Stefan ANTON ,  Richard M. SPRINGMAN ,  Robert MAHORTER

IPC分类号： G21F5/005 ,  G21F5/08 ,  G21F9/34 ,  G21F5/12 ,  G21F5/10

CPC分类号： G21F5/005 ,  G21F5/08 ,  G21F9/34 ,  G21F5/12 ,  G21F5/10

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.

公开(公告)号：US11694817B2

公开(公告)日：2023-07-04

申请号：US17135930

申请日：2020-12-28

申请人： Holtec International

发明人： Krishna P. Singh

IPC分类号： G21F5/005 ,  G21F9/34 ,  G21C19/40 ,  G21F5/10 ,  G21F5/12

CPC分类号： G21F5/005 ,  G21C19/40 ,  G21F5/10 ,  G21F5/12 ,  G21F9/34

摘要： A module for storing high level radioactive waste includes an outer shell, having a hermetically closed bottom end, and an inner shell forming a cavity and being positioned inside the outer shell to form a space therebetween. At least one divider extends from the top to the bottom of the inner shell to create a plurality of inlet passageways through the space, each inlet passageway connecting to a bottom portion of the cavity. A plurality of inlet ducts each connect at least one of the inlet passageways and ambient atmosphere, and each includes an inlet duct cover affixed atop a surrounding inlet wall, the inlet wall being peripherally perforated. A removable lid is positioned atop the inner shell and has at least one outlet passageway connecting the cavity and the ambient atmosphere, the lid and the top of the inner shell being configured to form a hermetic seal therebetween.

公开(公告)号：US11676736B2

公开(公告)日：2023-06-13

申请号：US16161910

申请日：2018-10-16

申请人： NAC International Inc.

发明人： Holger Pfeifer ,  Jay G. Wellwood ,  George C. Carver

IPC分类号： G21F5/008 ,  G21F5/10 ,  G21F1/12 ,  G21F5/06 ,  G21F5/00 ,  G21F5/005

CPC分类号： G21F5/008 ,  G21F1/125 ,  G21F5/00 ,  G21F5/06 ,  G21F5/10 ,  G21F5/005

摘要： A storage apparatus is provided for dry storage of radioactive nuclear waste. The storage apparatus comprises a sealed canister containing the radioactive nuclear waste and an outer ventilated metal storage overpack (VMSO). The VMSO has a plurality of vents to enable ambient air flow through the VMSO and around the canister to thereby dissipate heat from the canister. The VMSO has a side wall having an inner metal layer and one or more sets of alternating layers. Each set includes a neutron absorbing layer adjacent to another metal layer so that neutron absorbing and metal layers alternate throughout the side wall. The neutron absorbing layer or layers are designed to absorb neutron particles radiated from the radioactive nuclear waste and the metal layers are designed to absorb gamma particles radiated from the radioactive nuclear waste as well as radiated from the neutron absorbing layer or layers that result from reactions associated with absorption of neutron particles.

公开(公告)号：US20180068752A1

公开(公告)日：2018-03-08

申请号：US15560021

申请日：2016-03-24

申请人： TN INTERNATIONAL

发明人： Olivier BARDON ,  Laurent POQUE ,  Ludovic GARNIER

IPC分类号： G21F5/10 ,  G21F5/005 ,  B61D3/16 ,  B60P3/20 ,  B60H1/00

CPC分类号： G21F5/10 ,  B60H1/00264 ,  B60P3/20 ,  B61D3/16 ,  G21F5/005 ,  G21F5/14

摘要： The invention relates to a device (3) for supporting packaging for transporting/storing radioactive materials (1) in a horizontal position, the supporting device including a structural base (10) and structures (12) for supporting the packaging, which structures are supported by the base (10) and project upwards therefrom. According to the invention, the device also includes, located at least in part above the structural base (10), a shroud (30) for guiding air for cooling the packaging by natural convection, the shroud (30) defining a recess (32) which is open towards the top and into which a portion of the packaging is intended to be inserted when the packaging (1) is supported in a horizontal position on the device, the shroud (30) including, at the bottom thereof, at least one opening (34) for allowing cooling air into the recess (32).