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公开(公告)号：US11848115B2
公开(公告)日：2023-12-19
申请号：US17429725
申请日：2020-02-11
发明人： Seok-Ju Hwang , Young Hwan Hwang , Ju-Young Yoon , Cheon-Woo Kim
摘要： A radioactive structure dismantling method of a heavy water reactor facility that includes a calandria including a main shell and a sub shell, a calandria vault that receives the calandria therein, and a cover assembly that covers the calandria according to an embodiment, includes: preparing dismantling of the calandria; dismantling a reactor pipe installed in the calandria; dismantling the cover assembly that covers the calandria; dismantling the calandria; and dismantling the calandria vault.
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公开(公告)号：US11828887B2
公开(公告)日：2023-11-28
申请号：US16475043
申请日：2018-01-02
发明人： Seung Chan Lee
CPC分类号： G01T1/167 , G01J3/28 , G01T1/1663 , G01T1/36
摘要： The present invention relates to a radioactivity measurement method and a radioactivity measurement system. A radioactivity measurement method according to the present invention comprises the steps of: measuring radioactivity while performing energy scanning and temporal scanning; preparing a database from a time-energy-related data set obtained in result of the scanning; and obtaining a radioactivity measurement value of desired time from the database.
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公开(公告)号：US11823806B2
公开(公告)日：2023-11-21
申请号：US17257913
申请日：2019-07-03
发明人： Young Hwan Hwang , Mi-Hyun Lee , Sung-Hoon Hong , Cheon-Woo Kim
摘要： A nuclear reactor dismantlement system according to an embodiment includes bio-protective concrete including a first space into which a reactor is inserted and a second space that is connected to the first space and is expanded in the first space, a moving device that is positioned in the second space and moves the reactor, and a cutting device that is positioned in the second space and cuts the reactor.
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公开(公告)号：US20230125411A1
公开(公告)日：2023-04-27
申请号：US17918176
申请日：2021-03-10
发明人： Changyeon YOON , Gilim KIM , Minchul KIM , Cheon-Woo KIM
摘要： An exposure dose measurement simulation device according to an embodiment of the present invention includes: a virtual work area generating portion that generates a virtual work area corresponding to a work area of a radiation facility; and an exposure dose prediction portion that predicts an exposure dose of a worker positioned in the virtual work area, wherein the exposure dose prediction portion includes a database portion that includes first data on a spatial dose rate of the radiation facility and second data on a position of a radiation source in the radiation facility, and a first exposure dose calculation portion that calculates the exposure dose of the worker positioned in the virtual work area using the first data and second data.
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公开(公告)号：US20220322514A1
公开(公告)日：2022-10-06
申请号：US17761500
申请日：2019-10-02
发明人： Hyun-Je Cho , Cheon-Woo Kim
IPC分类号： H05H1/28
摘要： A plasma torch has a torch body provided with a plurality of stacked torch body segments disposed between a rear electrode unit and a front electrode unit. The torch body forms a circular channel through which gas flows in an axial direction. Each torch body segment has a circular disc shape in which a central circular through-hole is formed to form the channel. Each segment includes gas supply ports defining a spiral-shaped flow path along the through hole on a first side of the segment so as to introduce a reactive gas, a cooling flow path, a cooling water supply flow path, a cooling water discharge flow path, a gas supply flow path, a gas branch flow path, a cooling water supply branch flow path, and a cooling water discharge branch flow path.
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公开(公告)号：US11417436B2
公开(公告)日：2022-08-16
申请号：US17259655
申请日：2019-07-03
发明人： Seok-Ju Hwang , Young Hwan Hwang , Sung-Hoon Hong , Cheon-Woo Kim
摘要： An apparatus for decommissioning heavy-water reactor facilities includes a shielding device including a drawing-out space that is mounted on the reactivity mechanism deck and communicates with one through-hole among the plurality of through-holes, a separating device that is inserted into the inside of one of the plurality of guide tubes through the drawing-out space and the one through-hole and cuts an end portion of the one guide tube connected to the calandria, and a drawing-out device that is inserted into the inside of the one guide tube through the drawing-out space and the one through-hole and supports the end portion of the one guide tube to draw out the one guide tube into the inside of the drawing-out space through the one through-hole.
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公开(公告)号：US20220148749A1
公开(公告)日：2022-05-12
申请号：US17438960
申请日：2020-03-13
发明人： Young Hwan HWANG , Seok-Ju HWANG , Mi-Hyun LEE , Cheon-Woo KIM
摘要： A safety cover structure of a nuclear facility is disclosed. The safety cover structure of a nuclear facility includes: a cover portion rotatably provided over body protection concrete so as to cover a cavity in which a reactor pressure container is positioned; a driving part for providing rotational driving power to the cover part; an opening and closing portion provided at the cover portion and thus products from the cutting and dismantling of the reactor pressure contain move therethrough; a fire extinguishing portion for extinguishing a fire occurring inside the cover portion; a radiation sensor which is provided on the cover portion and which measures radiation dose; and an alarming portion, which receives a sensing signal of the radiation sensor so as to issue an alert when radiation greater than or equal to a predetermined value is discharged from the reactor pressure container.
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78.发明授权公开(公告)号：US11276300B2
公开(公告)日：2022-03-15
申请号：US16328645
申请日：2017-08-29
发明人： Dae Woong Kim , Nam Woo Choi , Bum Nyun Kim , Hyoung Kyun Kim , Ji In Kim , Ju Hyung Kang , Yong Hoon Park , Gun Woong Shin , Yang Seok Kim , Young Sheop Park , Chi Yong Park , Byoung Oh Lee , Jong Seog Kim
摘要： The present invention provides a method for learning latest data considering external influences in an early warning system, and the early warning system for same. The method for learning latest data considering external influences comprises the steps of: an early warning processing device categorizing device monitored variables according to external influences; and the early warning processing device differently applying a pattern learning method for each of the categorized monitored variables.
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公开(公告)号：US20220068514A1
公开(公告)日：2022-03-03
申请号：US17422834
申请日：2020-01-08
发明人： Seok-Ju HWANG , Young Hwan HWANG , Ju-Young YOON , Cheon-Woo Kim
摘要： A heavy-water reactor facility dismantling apparatus according to an embodiment includes: a first cutting device for cutting the periphery of a first nozzle portion of a calandria, wherein the first nozzle portion is connected to the upper end of a first pipe positioned in the calandria of a heavy-water reactor facility; a second cutting device for cutting a first support part of the calandria, wherein the first support portion is connected to the lower end of the first pipe connected to the first nozzle portion; and a fixing and drawing device for fixing and drawing the first nozzle portion cut by the first cutting device.
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公开(公告)号：US20210183531A1
公开(公告)日：2021-06-17
申请号：US17257360
申请日：2019-07-03
发明人： Young Hwan HWANG , Mi-Hyun LEE , Ju-Young YOON , Cheon-Woo KIM
IPC分类号： G21D1/00
摘要： A nuclear reactor decommissioning system according to an embodiment includes a cutting device to cut a reactor, a lifting device inserted inside the reactor to lift the reactor, and a shielding device that is positioned between the reactor and the lifting device and blocks radioactive dust generated by the cutting device from spreading.
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