-
公开(公告)号：US20230117993A1
公开(公告)日：2023-04-20
申请号：US18085428
申请日：2022-12-20
Applicant: Holtec International
Inventor： Krishna P. SINGH , Evan ROSENBAUM , Thomas G. HAYNES, III , John D. GRIFFITHS , Debabrata MITRA-MAJUMDAR , Indresh RAMPALL , Joseph Gerald Leo RAJKUMAR
Abstract: A neutron absorbing insert for use in a fuel rack. In one aspect, the insert includes: a plate structure having a first wall and a second wall that is non-coplanar to the first wall; the first and second walls being formed by a single panel of a metal matrix composite having neutron absorbing particulate reinforcement that is bent into the non-coplanar arrangement along a crease; and a plurality of spaced-apart holes formed into the single panel along the crease prior to bending.
-
公开(公告)号：US20220351872A1
公开(公告)日：2022-11-03
申请号：US17850213
申请日：2022-06-27
Applicant: HOLTEC INTERNATIONAL
Inventor： Krishna P. SINGH , John D. GRIFFITHS , Stephen J. AGACE , Joseph A. MECKLEY
Abstract: 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.
-
3.发明申请SNAP-IN INSERT FOR REACTIVITY CONTROL IN SPENT NUCLEAR FUEL POOLS AND CASKS 有权用于燃料核燃料池和储罐的反应性控制的SNAP-IN插件公开(公告)号：US20130343503A1
公开(公告)日：2013-12-26
申请号：US13925585
申请日：2013-06-24
Applicant: Holtec International, Inc.
Inventor： Stephen J. AGACE , Stephen E. THOMPSON , John D. GRIFFITHS , Richard M. SPRINGMAN
IPC: G21F5/012
Abstract: 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.
Abstract translation: 用于插入到燃料电池存储系统中的中子吸收装置包括拐角脊，第一全壁和第二壁，每个壁都固定在拐角脊上以形成人字形。 每个壁都包括固定在拐角脊上的吸收片，每个吸收片由具有中子吸收粒子增强物的金属基质复合体形成，以及一个引导片，该引导片固定并覆盖吸收片的分数上部， 吸收片。 吸收片沿着拐角脊线延伸比引导片更大的长度。
-
公开(公告)号：US20210343439A1
公开(公告)日：2021-11-04
申请号：US17374005
申请日：2021-07-13
Applicant: Holtec International
Inventor： Krishna P. SINGH , Charles W. BULLARD, II , Xuejun ZHAI , John D. GRIFFITHS
Abstract: A nuclear waste cask with impact protection includes impact limiters comprising deformable energy-absorbing perforated sleeves. An impact amelioration system for nuclear fuel storage components includes impact limiter assemblies at the bottom cask to canister interface including impact limiter plugs frictionally engaging corresponding plug holes formed in the cask closure plate. A nuclear waste fuel storage system includes an unventilated cask including a heavy free-floating radiation shielding lid loosely coupled the top end of the cask in a movable manner via the anchor bosses which provides cask overpressurization protection. A nuclear waste cask includes an axially elongated rectangular cuboid cask body having a cavity for holding nuclear waste materials and cask locking mechanism including first locking protrusions on the lid which are selectively interlockable with mating second locking protrusions on the cask body to lock the lid to the cask body.
-
公开(公告)号：US20210225537A1
公开(公告)日：2021-07-22
申请号：US17095834
申请日：2020-11-12
Applicant: Holtec International
Inventor： Krishna P. SINGH , Evan ROSENBAUM , Thomas G. HAYNES, III , John D. GRIFFITHS , Debabrata MITRA-MAJUMDAR , Indresh RAMPALL , Joseph Gerald Leo RAJKUMAR
Abstract: A neutron absorbing insert for use in a fuel rack. In one aspect, the insert includes: a plate structure having a first wall and a second wall that is non-coplanar to the first wall; the first and second walls being formed by a single panel of a metal matrix composite having neutron absorbing particulate reinforcement that is bent into the non-coplanar arrangement along a crease; and a plurality of spaced-apart holes formed into the single panel along the crease prior to bending.
-
Patent Agency Ranking
6.发明申请SYSTEM AND METHOD FOR PREPARING A CONTAINER LOADED WITH WET RADIOACTIVE ELEMENTS FOR DRY STORAGE 审中-公开用于干燥储存的湿式放射性元素装载集装箱的系统和方法公开(公告)号：US20160118152A1
公开(公告)日：2016-04-28
申请号：US14886844
申请日：2015-10-19
Applicant: Holtec International, Inc.
Inventor： Krishna P. SINGH , John D. GRIFFITHS
CPC classification number: G21F5/06 , F26B5/04 , F26B5/12 , F26B21/08 , F26B21/14 , G21C19/32 , G21F5/005 , G21F5/008 , G21F9/28 , G21F9/34
Abstract: A system for preparing a container holding radioactive waste for dry storage. In one aspect, the invention can be a system for preparing a container having a cavity loaded with radioactive elements for dry storage, the system comprising: a gas circulation system comprising a condenser module, a desiccant module, and a gas circulator module; the gas circulation system configured to form a hermetically sealed closed-loop path when operably connected to the cavity of the container; and means for adding and removing the desiccant module as part of the hermetically sealed closed-loop path.
Abstract translation: 一种用于制备容纳放射性废物用于干燥储存的容器的系统。 一方面，本发明可以是一种用于制备具有装有用于干燥储存的放射性元素的空腔的容器的系统，该系统包括：气体循环系统，包括冷凝器模块，干燥剂模块和气体循环器模块; 所述气体循环系统配置成当可操作地连接到所述容器的空腔时形成密封的闭环路径; 以及用于添加和除去干燥剂模块作为密封闭环路径的一部分的装置。
-
公开(公告)号：US20230282382A1
公开(公告)日：2023-09-07
申请号：US18184351
申请日：2023-03-15
Applicant: Holtec International
Inventor： Krishna P. SINGH , John D. GRIFFITHS
Abstract: An impact amelioration system for nuclear fuel storage components in one embodiment includes a fuel storage canister and outer cask receiving the canister. The canister is configured for storing spent nuclear fuel or other high level radioactive waste. A plurality of impact limiter assemblies are disposed on the bottom closure plate of the cask at the canister interface. Each impact limiter assembly comprises an impact limiter plug frictionally engaged with a corresponding plug hole formed in the cask closure plate. The canister rests on tops of the plugs, which may protrude upwards beyond the top surface of the bottom closure lid. The plugs and holes may mating tapered and frictionally engaged surfaces. During a cask drop event, the canister drives the plugs deeper into the plug holes and elastoplastically deform to dissipate the kinetic impact energy and protect the structural integrity of the canister and its contents.
-
公开(公告)号：US20210210242A1
公开(公告)日：2021-07-08
申请号：US17073976
申请日：2020-10-19
Applicant: Holtec International
Inventor： Krishna P. SINGH , Joseph Gerald Leo RAJKUMAR , Vytautas Vincas MACIUNAS , Raghavendra PALLE , Debabrata MITRA-MAJUMDAR , Abrar Hasan MOHAMMAD , John D. GRIFFITHS
Abstract: An air-cooled condenser system for steam condensing applications in a power plant Rankine cycle includes an air cooled condenser having a plurality of interconnected modular cooling cells. A method for forming an axial flow baffle for a shell and tube heat exchanger includes providing a baffle workpiece, locating a centerpoint of a first axial flow tube aperture, drilling flow holes around the centerpoint of the flow aperture, and drilling a central tube hole at the centerpoint. A method of cooling high level waste includes surrounding a cask comprising an external surface and an internal storage cavity containing the high level radioactive waste which emits heat with a cooling water header; and discharging cooling water radially inwards from the cooling water header onto the external surface of the cask from the plurality of water dispensing outlets arranged on the cooling water header.
-
公开(公告)号：US20210210238A1
公开(公告)日：2021-07-08
申请号：US17075081
申请日：2020-10-20
Applicant: HOLTEC INTERNATIONAL
Inventor： Krishna P. SINGH , John D. GRIFFITHS
Abstract: A method of forming a sealed canister and a method of storing radioactive materials is provided. The method of forming includes placing a top plate on a top opening of a side wall, a bottom of the side wall being sealed to a base plate. The top plate includes a top surface with a top edge having a bevel and with a channel set in from the top edge. Finally, a weld is formed between the beveled top edge and the top opening of the side wall to seal the top plate to the side wall.
-
公开(公告)号：US20240068749A1
公开(公告)日：2024-02-29
申请号：US18374903
申请日：2023-09-29
Applicant: Holtec International
Inventor： Krishna P. SINGH , Joseph Gerald Leo RAJKUMAR , Vytautas Vincas MACIUNAS , Raghavendra PALLE , Debabrata MITRA-MAJUMDAR , Abrar Hasan MOHAMMAD , John D. GRIFFITHS
Abstract: An air-cooled condenser system for steam condensing applications in a power plant Rankine cycle includes an air cooled condenser having a plurality of interconnected modular cooling cells. A method for forming an axial flow baffle for a shell and tube heat exchanger includes providing a baffle workpiece, locating a centerpoint of a first axial flow tube aperture, drilling flow holes around the centerpoint of the flow aperture, and drilling a central tube hole at the centerpoint. A method of cooling high level waste includes surrounding a cask comprising an external surface and an internal storage cavity containing the high level radioactive waste which emits heat with a cooling water header; and discharging cooling water radially inwards from the cooling water header onto the external surface of the cask from the plurality of water dispensing outlets arranged on the cooling water header.
-
-
-
-
-
-
-
-
-
Search Results
20
records
(took 0.016 seconds)
