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1. 发明授权

US10147509B2 Ventilated system for storing high level radioactive waste 有权
公开(公告)号：US10147509B2
公开(公告)日：2018-12-04
申请号：US14344013
申请日：2012-09-10
申请人： Krishna P. Singh
发明人： Krishna P. Singh
IPC分类号： G21F5/10 , G21F7/015 , G21F9/24 , G21F9/34
摘要： A ventilated system for storing high level radioactive waste, such as used nuclear fuel, in a below-grade environment, in one embodiment, the invention is a ventilated system comprising an air-intake shell and a plurality of storage shells that are interconnected by a network of pipes configured to achieve double redundancy and/or improved air delivery. In another embodiment, the invention is a ventilated system that utilizes a mass of low level radioactive waste contained in a hermetically sealed enclosure cavity, the low level radioactive waste providing radiation shielding for high level radioactive waste stored in a storage cavity of said ventilated system.

2. 发明授权

US09991010B2 System and method for minimizing movement of nuclear fuel racks during a seismic event 有权
公开(公告)号：US09991010B2
公开(公告)日：2018-06-05
申请号：US14424149
申请日：2013-08-28
申请人： Holtec International, Inc.
发明人： Krishna P. Singh , Charles W. Bullard, II
IPC分类号： G21C19/07 , G21C19/40 , G21C19/34
CPC分类号： G21C19/07 , G21C19/34 , G21C19/40
摘要： A system for storing nuclear fuel, the system including a storage rack and a bearing pad. The storage rack includes an array of cells, each cell configured to receive and store nuclear fuel rods, a base plate configured to support the array of cells, and a support structure configured to support the base plate and to allow cooling fluid to circulate under and up through apertures in the base plate. The bearing pad is coupled to the support structure and is configured to limit lateral movement of the storage rack independent from lateral movement of the bearing pad. The base plate defines a base plate profile in a horizontal plane of the base plate, and the bearing pad defines a bearing pad profile in the horizontal plane of the base plate, wherein the bearing pad profile extends outside of the base plate profile.

3. 发明授权

US09685248B2 Snap-in insert for reactivity control in spent nuclear fuel pools and casks 有权
公开(公告)号：US09685248B2
公开(公告)日：2017-06-20
申请号：US13925585
申请日：2013-06-24
申请人： Holtec International, Inc.
发明人： Stephen J. Agace , Stephen E. Thompson , John D. Griffiths , Richard M. Springman
IPC分类号： G21F5/012 , G21C19/07 , G21C19/40 , G21F1/06 , G21F1/08
CPC分类号： G21F5/012 , G21C19/07 , G21C19/40 , G21F1/06 , G21F1/08
摘要： A neutron absorbing apparatus, for insertion into a fuel cell storage system, includes a corner spine, a first all and a second wall, each wall being affixed to the corner spine to form a chevron shape. Each wall includes an absorption sheet affixed to the corner spine, each absorption sheet being formed of a metal matrix composite having neutron absorbing particulate reinforcement, and a guide sheet affixed to and covering a fractional upper portion of the absorption sheet and extending over a top of the absorption sheet. The absorption sheet extends along the corner spine a greater length than the guide sheet.

4. 发明申请

US20140317952A1 METHOD AND APPARATUS FOR PREPARING SPENT NUCLEAR FUEL FOR DRY STORAGE 有权
标题翻译：用于制备干燥储存的燃料核燃料的方法和装置
公开(公告)号：US20140317952A1
公开(公告)日：2014-10-30
申请号：US14288045
申请日：2014-05-27
申请人： Holtec International, Inc.
发明人： Krishna P. SINGH
IPC分类号： G21F5/005
CPC分类号： G21F5/005 , F26B5/04 , F26B21/006 , F26B21/08 , F26B21/14 , G21C19/32 , G21F5/008 , G21F9/28
摘要： A system and method for drying cavities containing spent nuclear fuel is devised. The invention utilizes a non-intrusive procedure that is based on monitoring the dew point temperature of a non-reactive gas that is circulated through the cavity, in one aspect, the invention is a system for drying a cavity loaded with spent nuclear fuel comprising: a canister forming the cavity, the cavity having an inlet and an outlet; a source of non-reactive gas; means for flowing the non-reactive gas from the source of non-reactive gas through the cavity; and means for repetitively measuring the dew point temperature of the non-reactive gas exiting, the cavity,
摘要翻译：设计了一种用于干燥包含乏核燃料的空腔的系统和方法。本发明利用基于监测通过空腔循环的非反应性气体的露点温度的非侵入性方法，一方面，本发明是用于干燥装载有废核燃料的空腔的系统，包括：形成所述腔的罐，所述空腔具有入口和出口; 非反应性气体来源; 用于使非反应性气体从非反应性气体源流过空腔的装置; 以及用于重复测量离开所述空腔的非反应性气体的露点温度的装置，

5. 发明申请

US20140247916A1 Method For Controlling Temperature Of A Portion Of A Radioactive Waste Storage System And For Implementing The Same 有权
标题翻译：控制放射性废物储存系统一部分温度的方法及其实施方法
公开(公告)号：US20140247916A1
公开(公告)日：2014-09-04
申请号：US14354851
申请日：2012-10-29
申请人： Krishna P. Singh , Richard M. Springman
发明人： Krishna P. Singh , Richard M. Springman
IPC分类号： G21F5/10
CPC分类号： G21F5/10 , G21F5/06
摘要： A system and method for storing radioactive waste, such as spent nuclear fuel, in one embodiment, the invention is a method of controlling temperature of a portion of a storage system comprising a container loaded with radioactive waste and a ventilated module in which the container is positioned, the ventilated module configured so that heat generated by the radioactive waste causes a natural convective flow of air through, a ventilation passageway of the ventilated module, the method comprising; throttling the natural convective flow of the air through the ventilated module to alter a heat rejection rate of the storage system to compensate for a decreasing heat generation rate of the radioactive waste to maintain the portion of the storage system within a predetermined temperature range.
摘要翻译：在一个实施方案中，用于储存放射性废物（例如废核燃料）的系统和方法本发明是一种控制储存系统的部分温度的方法，所述储存系统的一部分包括装有放射性废物的容器和通风模块，其中所述容器是所述通风模块被配置成使得由放射性废物产生的热量引起空气的自然对流流过通风模块的通风通道，所述方法包括：节流空气通过通风模块的自然对流，以改变储存系统的排热率，以补偿放射性废物的降低的发热速率，以将储存系统的部分保持在预定的温度范围内。

6. 发明申请

US20140150994A1 AIR-COOLED HEAT EXCHANGER AND SYSTEM AND METHOD OF USING THE SAME TO REMOVE WASTE THERMAL ENERGY FROM RADIOACTIVE MATERIALS 有权
标题翻译：空气冷却热交换器和系统及其使用方法从放射性物质中去除废热能
公开(公告)号：US20140150994A1
公开(公告)日：2014-06-05
申请号：US14113990
申请日：2012-04-25
申请人： Krishna P. Singh , Joseph Rajkumar
发明人： Krishna P. Singh , Joseph Rajkumar
IPC分类号： G21C15/22
CPC分类号： G21C15/22 , G21C15/18 , G21D3/04 , Y02E30/40
摘要： A system for removing thermal energy generated by radioactive materials is provided. The system comprises an air-cooled shell-and- tube heat exchanger, comprising a shell and plurality of heat exchange tubes arranged in a substantially vertical orientation within the shell, the heat exchange tubes comprising interior cavities that collectively form a tube-side fluid path, the shell forming a shell-side fluid path that extends from an air inlet of the shell to an air outlet of the shell, the air inlet at a lower elevation than the air outlet; a heat rejection closed-loop fluid circuit comprising the tube-side fluid path, a coolant fluid flowing through the heat rejection closed-loop fluid circuit, the heat rejection closed-loop fluid circuit thermally coupled to the radioactive materials; and the air-cooled shell-and-tube heat exchanger transferring thermal energy from the coolant fluid flowing through the tube-side fluid path to air flowing through the shell-side fluid path.
摘要翻译：提供了一种用于去除放射性材料产生的热能的系统。该系统包括一个空气冷却的壳管式热交换器，它包括壳体和多个在壳体内基本垂直取向的热交换管，热交换管包括内腔，它们共同形成管侧流体路径壳体形成从壳体的空气入口延伸到壳体的空气出口的壳侧流体路径，空气入口处于比出风口低的高度处; 包括管侧流体路径的散热闭环流体回路，流过散热闭环回路流体回路的冷却剂流体，与放射性物质热耦合的散热闭环流体回路; 以及将来自流经管侧流体路径的冷却剂流体的热能传递到流过壳侧流体路径的空气的风冷管壳式热交换器。

7. 发明授权

US08602089B2 Heat exchanger apparatus for accommodating thermal and/or pressure transients 有权
标题翻译：用于容纳热和/或压力瞬变的热交换器装置
公开(公告)号：US08602089B2
公开(公告)日：2013-12-10
申请号：US12127459
申请日：2008-05-27
申请人： Krishna P. Singh , Ranga Nadig
发明人： Krishna P. Singh , Ranga Nadig
IPC分类号： F28F7/00 , F28F9/02 , F28D7/00
CPC分类号： F28D7/1607 , F28D7/06 , F28F9/02 , F28F9/0246 , F28F9/22 , F28F2009/226
摘要： A heat exchanger apparatus for accommodating thermal and pressure transients. In one embodiment, the heat exchanger apparatus comprises: a first outer shell having an open end and an end wall; an inner shell having a cavity, the inner shell extending through the end wall of the first outer shell; a first tube sheet having a rim portion having a design feature for allowing the rim portion to act as an expansion joint; the outer rim portion of the first tube sheet connected to the first outer shell so as to enclose the open end of the first outer shell and form a first header cavity between the first outer shell and the inner shell; a clearance existing between the inner shell and the first tube sheet; a plurality of holes in the inner shell that form passageways between the first header cavity and the cavity of the inner shell; a first end cap connected to the rim portion of the first tube sheet so as to form a first plenum on the other side of the first tube sheet; a plurality of tubes located in the cavity of the inner shell and operably connected to the first tube sheet; an opening in the first outer shell for flowing a shell-side fluid into and/or out of the first header cavity; and an opening in the first end cap for flowing a tube-side fluid into and/or out of the first plenum.
摘要翻译：一种用于容纳热和压力瞬变的热交换器装置。在一个实施例中，热交换器装置包括：具有开口端和端壁的第一外壳; 具有空腔的内壳，所述内壳延伸穿过所述第一外壳的端壁; 第一管板，其具有边缘部分，该边缘部分具有允许边缘部分用作膨胀接头的设计特征; 所述第一管板的外缘部分连接到所述第一外壳，以封闭所述第一外壳的开口端，并在所述第一外壳和所述内壳之间形成第一集管空腔; 存在于内壳和第一管板之间的间隙; 所述内壳中的多个孔在所述第一集管腔和所述内壳的空腔之间形成通道; 第一端盖，其连接到第一管板的边缘部分，以在第一管板的另一侧上形成第一增压室; 多个管，位于所述内壳的空腔中并可操作地连接到所述第一管板; 第一外壳中的开口，用于使壳侧流体流入和/或流出第一集管腔; 以及在第一端盖中的开口，用于使管侧流体流入和/或流出第一集气室。

8. 发明授权

US08561318B2 System and method for preparing a container loaded with wet radioactive elements for dry storage 有权
标题翻译：用于制备装载有用于干燥储存的湿放射性元素的容器的系统和方法
公开(公告)号：US08561318B2
公开(公告)日：2013-10-22
申请号：US12342022
申请日：2008-12-22
申请人： Krishna P. Singh , John D. Griffiths
发明人： Krishna P. Singh , John D. Griffiths
IPC分类号： F26B3/00
CPC分类号： G21F5/06 , F26B5/04 , F26B5/12 , F26B21/08 , F26B21/14 , G21C19/32 , G21F5/005 , G21F5/008 , G21F9/28 , G21F9/34
摘要： A method for preparing a container holding high level radioactive waste for dry storage. In one aspect, the method includes: (a) providing a gas circulation system comprising a condensing module, a desiccant module, a gas circulator module; (b) connecting the gas circulation system to the canister so as to form a hermetically sealed closed-loop path that includes the cavity; (c) filling the hermetically sealed closed-loop path with a non-reactive gas; (d) circulating the non-reactive gas through the hermetically sealed closed-loop path until the condensing module is no longer removing substantial amounts of water from the circulating non-reactive gas, wherein the desiccant module is sealed off from the hermetically sealed closed-loop path during step (d); and (e) adding the desiccant module to the hermetically sealed closed-loop path and continuing to circulate the non-reactive gas through the hermetically sealed closed-loop path, the desiccant module dehumidifying the circulating the non-reactive gas.
摘要翻译：一种用于制备容纳高放射性废物用于干燥储存的容器的方法。一方面，该方法包括：（a）提供包括冷凝模块，干燥剂模块，气体循环器模块的气体循环系统; （b）将所述气体循环系统连接到所述罐，以便形成包括所述空腔的密封的闭环路径; （c）用非反应性气体填充密封的闭环路径; （d）使非反应性气体循环通过密封的闭环路径，直到冷凝模块不再从循环的非反应性气体中除去大量的水，其中干燥剂模块与气密密封的闭环通道密封，步骤（d）期间的循环路径; 和（e）将干燥剂模块添加到密封的闭环路径中并且继续使非反应气体通过密封的闭环路径循环，干燥剂模块对循环非反应性气体进行除湿。

9. 发明授权

US08266823B2 Method and apparatus for dehydrating high level waste based on dew point temperature measurements 有权
标题翻译：基于露点温度测量方法脱水高级废物的方法和装置
公开(公告)号：US08266823B2
公开(公告)日：2012-09-18
申请号：US12641378
申请日：2009-12-18
申请人： Krishna Singh
发明人： Krishna Singh
IPC分类号： F26B21/00 , F26B21/10
CPC分类号： G21F5/005 , F26B5/04 , F26B21/006 , F26B21/08 , F26B21/14 , G21C19/32 , G21F5/008 , G21F9/28
摘要： A system and method for drying cavities loaded with high level waste (“HLW”) is devised. The invention utilizes a non-intrusive procedure that is based on monitoring the dew point temperature of a non-reactive gas that is circulated through the cavity. In one aspect, the invention is a system for drying a cavity loaded with HLW comprising: a canister forming the cavity, the cavity having an inlet and an outlet; and a source of non-reactive gas. The system further flows the non-reactive gas from the source of non-reactive gas through the cavity; and repetitively measures the dew point temperature of the non-reactive gas exiting the cavity.
摘要翻译：设计了一种用于干燥装有高级废物（“HLW”）的空腔的系统和方法。本发明利用基于监测通过空腔循环的非反应性气体的露点温度的非侵入性程序。一方面，本发明是一种用于干燥装有HLW的空腔的系统，包括：形成空腔的腔室，腔体具有入口和出口; 和非反应性气体源。该系统进一步使非反应性气体从非反应性气体源流过空腔; 并重复地测量离开空腔的非反应性气体的露点温度。

10. 发明授权

US08139706B2 Apparatus and method for supporting fuel assemblies in an underwater environment having lateral access loading 有权
标题翻译：在具有横向进入负载的水下环境中支撑燃料组件的装置和方法
公开(公告)号：US08139706B2
公开(公告)日：2012-03-20
申请号：US12751717
申请日：2010-03-31
申请人： Krishna P. Singh , Evan Rosenbaum
发明人： Krishna P. Singh , Evan Rosenbaum
IPC分类号： G21C19/00 , G21F5/00
CPC分类号： G21C19/07 , G21Y2002/203 , G21Y2002/304 , G21Y2002/401 , G21Y2004/30 , G21Y2004/40
摘要： A method of loading nuclear fuel assemblies into a fuel rack in an underwater (or other submerged) environment that reduces the depth required for the pool to effectuate the fuel rack loading procedure. In one embodiment, the method comprises submerging a nuclear fuel assembly having an axis and a horizontal cross-section in a pool; providing a fuel rack in the pool, the fuel rack comprising a body structure comprising at least one elongated cell, a top, a bottom, a first lateral side, at least one elongated slot in the first lateral side that forms a lateral passageway into the cell; positioning the fuel assembly laterally adjacent to the elongated slot of the fuel rack so that the axis of the fuel assembly is substantially aligned with the elongated slot; and translating the fuel assembly in a lateral direction through the elongated slot and into the cell.
摘要翻译：将核燃料组件装载到水下（或其他淹没的）环境中的燃料架中的方法，其减少了池所需的深度以实现燃料架装载程序。在一个实施例中，该方法包括将具有轴线和水平横截面的核燃料组件浸没在池中; 在所述池中提供燃料架，所述燃料架包括主体结构，所述主体结构包括至少一个细长单元，顶部，底部，第一侧面，所述第一侧面中的至少一个细长槽，细胞; 将燃料组件侧向地邻近燃料架的细长槽定位，使得燃料组件的轴线基本上与细长槽对齐; 并且将燃料组件沿横向方向平移通过细长槽并进入电池。

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