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公开(公告)号：US20210287816A1
公开(公告)日：2021-09-16
申请号：US17256755
申请日：2019-07-03
发明人： Young Hwan HWANG , Mi-Hyun LEE , Seok-Ju HWANG , Cheon-Woo KIM
摘要： An apparatus for treating waste of a nuclear reactor pressure vessel includes: a suction unit inserted into the nuclear reactor pressure vessel through a plurality of through-pipes passing through a lower portion of the nuclear reactor pressure vessel to suck waste inside the nuclear reactor pressure vessel; a waste treatment part connected to the suction unit to treat the waste; and a lower collection part connected to the waste treatment part to be positioned under the nuclear reactor pressure vessel with the suction unit therebetween.
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公开(公告)号：US20210319923A1
公开(公告)日：2021-10-14
申请号：US17259691
申请日：2019-07-03
发明人： Seok-Ju HWANG , Young Hwan HWANG , Hang-Rae CHO , Cheon-Woo KIM
摘要： A method for decommissioning a heavy water reactor facility includes: removing the plurality of guide tubes from a plurality of through-holes; installing a plurality of shielding stoppers in the plurality of through-holes; removing the shielding stopper installed in one through-hole of the plurality of through-holes, and inserting a cutting device into a lower portion of the reactivity mechanism deck through the one through-hole to cut a connection portion between the reactivity mechanism deck and the calandria vault by using the cutting device; and separating the reactivity mechanism deck from the calandria vault.
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公开(公告)号：US20210158982A1
公开(公告)日：2021-05-27
申请号：US17048317
申请日：2019-04-18
发明人： Seok-Ju HWANG , Hyun-Je CHO , Ji-Hoon LEE , Cheon-Woo KIM
摘要： A method for decommissioning a nuclear facility includes: separating a nuclear reactor pressure vessel from biodegradable concrete; decommissioning a concrete structure; covering the biodegradable concrete; and decommissioning the biodegradable concrete.
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公开(公告)号：US20220165439A1
公开(公告)日：2022-05-26
申请号：US17437073
申请日：2020-03-05
发明人： Young Hwan HWANG , Seok-Ju HWANG , Ju-Young YOON , Cheon-Woo KIM
摘要： A method for complex-decommissioning a nuclear facility is disclosed. The method for complex-decommissioning the nuclear facility includes: cutting and expanding an inner wall of the cavity; installing a cutting device that cuts and decommissions the nuclear reactor pressure vessel inside the cavity; fixing the nuclear reactor pressure vessel inside the cavity by using a fixture; and cutting and decommissioning the nuclear reactor pressure vessel fixed inside the cavity by using a cutting device.
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公开(公告)号：US20210350944A1
公开(公告)日：2021-11-11
申请号：US17277769
申请日：2019-09-20
发明人： Young Hwan HWANG , Seok-Ju HWANG , Mi Hyun LEE , Cheon-Woo KIM
摘要： A device for capturing a shielding ball for a heavy water reactor according to an embodiment includes: a head for separating a shielding ball positioned inside an end shield of a calandria of a heavy water reactor to an outside; and a mover for moving the head to the end shield of the calandria, wherein the head includes a head body, an opening former installed on the head body and forming an opening in the end shield, and a gate installed on the head body and controlling an amount of movement of the shielding ball discharged to the outside through the opening.
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公开(公告)号：US20210174978A1
公开(公告)日：2021-06-10
申请号：US17048222
申请日：2019-04-17
发明人： Seok-Ju HWANG , Mi-Hyun LEE , Sung-Hoon HONG , Cheon-Woo KIM
摘要： A dismantling and decontamination system of biodegradable concrete of a nuclear power plant according to an exemplary embodiment includes: a dismantling device for dismantling an in-core instrument installed under biodegradable concrete to form a lower penetrated part of the biodegradable concrete; a decontamination device inserted inside the biodegradable concrete for decontaminating radioactive waste of the inner wall of the biodegradable concrete; a waste receiving device movable through the lower penetrated part of the biodegradable concrete; and a blocking device for blocking the upper opening of the biodegradable concrete to block an outflow of the radioactive dust.
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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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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：US20210158983A1
公开(公告)日：2021-05-27
申请号：US17048326
申请日：2019-04-17
发明人： Seok-Ju HWANG , Ju-Young YOON , Young Hwan HWANG , Cheon-Woo KIM
IPC分类号： G21D1/00
摘要： A method of decommissioning a nuclear facility, including: exposing the plurality of upper penetration holes by removing the plurality of sandboxes; enlarging an upper space of the cavity by cutting an upper portion of the biological shield concrete that is disposed between the plurality of upper penetration holes and between the plurality of upper penetration holes and the cavity; and separating the nuclear reactor pressure vessel from the biological shield concrete.
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公开(公告)号：US20210158981A1
公开(公告)日：2021-05-27
申请号：US17047826
申请日：2019-04-17
发明人： Seok-Ju HWANG , Sung-Hoon HONG , Mi-Hyun LEE , Cheon-Woo KIM
IPC分类号： G21D1/00
摘要： A decommissioning method of biodegradable concrete of a nuclear power plant according to an exemplary embodiment includes: decommissioning a neutron detector positioning device installed to biodegradable concrete surrounding a nuclear reactor to form a plurality of penetrated parts in the biodegradable concrete; inserting a part of a cutting device into the plurality of penetrated parts; and decomposing the biodegradable concrete into a plurality of sub-concrete parts by using the cutting device.
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