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公开(公告)号：US11355255B2
公开(公告)日：2022-06-07
申请号：US16749872
申请日：2020-01-22
Applicant: Korea Atomic Energy Research Institute
Inventor： Joo-Hwan Park , Sung Il Kim , Kwang Soon Ha , Byeong Hee Lee
Abstract: Provided are a system and method for reducing the atmospheric release of radioactive materials caused by a severe accident. The system includes a steam generator disposed in a containment building, configured to generate steam by using heat of a coolant heated in a nuclear reactor, and connected to a turbine through a main steam line, a decontamination tank connected to the main steam line through a connection line and containing decontamination water for decontaminating the steam delivered from the steam generator and reducing atmospheric release of radioactive materials when a severe accident occurs, and a depressurizing power generation unit disposed on the connection line and configured to generate emergency power while depressurizing the steam delivered from the steam generator toward the decontamination tank when the severe accident occurs.
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公开(公告)号：US10468146B2
公开(公告)日：2019-11-05
申请号：US14516501
申请日：2014-10-16
Applicant: Korea Atomic Energy Research Institute
Inventor： Jin Ho Song , Hwan Yeol Kim , Yong Mann Song , Kwang Soon Ha
IPC: G21C19/303 , G21D3/06 , G21F9/02 , G21C19/317
Abstract: Provided is a combustion controller for a combustible gas of a pressurized water reactor nuclear power plant, and more particularly, to a combustion controller for a combustible gas installed in a rear end of a filtered vent system outside a containment vessel or an external chimney, configured to convert a combustible gas such as hydrogen, carbon monoxide, or the like, into steam, carbon dioxide, or the like, and simultaneously, operate by itself with no external power supply. Accordingly, the combustion controller for a combustible gas can perform stable combustion control with no probability of explosion of hydrogen through a recombining reaction of the combustible gas, prevent discharge of carbon monoxide, which is a toxic gas, and prevent backward flow of the flame through the quenching mesh.
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公开(公告)号：US20140376679A1
公开(公告)日：2014-12-25
申请号：US14308524
申请日：2014-06-18
Inventor： Jin Ho Song , Kwang Soon Ha , Hwan Yeol Kim , Yong Mann Song
IPC: G21C15/18
CPC classification number: G21C15/18 , G21C9/004 , G21C13/022 , Y02E30/40
Abstract: A nuclear power plant includes a nuclear reactor containment structure housing a nuclear reactor, a pressure vessel containing condensed water therein and having a receiving space located lower than a bottom of the containment structure, a release pipe connecting the containment structure to the pressure vessel such that water vapor and fission products generated in the containment structure in the event of an accident is capable of flowing into the pressure vessel, and a recovery pipe connecting the pressure vessel to the containment structure such that the condensed water received in the pressure vessel is capable of flowing into the containment structure. When a level of the condensed water received in the pressure vessel is higher than a water level in the containment structure, the condensed water flows from the pressure vessel toward the containment structure by a water head difference.
Abstract translation: 核电站包括容纳核反应堆的核反应堆容纳结构，在其中容纳冷凝水的压力容器，并且具有位于容纳结构的底部以下的容纳空间;将容纳结构连接到压力容器的释放管，使得 发生事故时在遏制结构中产生的水蒸气和裂变产物能够流入压力容器;以及回收管，其将压力容器连接到容纳结构，使得容纳在压力容器中的冷凝水能够 流入遏制结构。 当在压力容器中接收的冷凝水的水平高于容纳结构中的水位时，冷凝的水通过水头差从压力容器流向容纳结构。
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公开(公告)号：US11823804B2
公开(公告)日：2023-11-21
申请号：US17121873
申请日：2020-12-15
Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTE
Inventor： Jin-Ho Song , Kwang Soon Ha , Byeonghee Lee , Sung Il Kim , Yong Mann Song
Abstract: A steam generator accident mitigation system is disclosed. A steam generator accident mitigation system to mitigate an accident if the accident occurs in a steam generator installed inside a containment building of a nuclear power plant according to an exemplary embodiment of the present system, the system including: a pressurizing tank which is installed inside the containment building and includes a first cooling water and a non-condensable gas for pressurizing the first cooling water therein; at least one connecting pipe connecting the steam generator and the pressurizing tank; and at least one connecting pipe valve which is installed in the at least one connecting pipe, respectively, and is able to control the amount of opening of the connecting pipe; wherein opening of the at least one connecting pipe valve permits fluid communication between the steam generator and the pressurizing tank.
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Patent Agency Ranking
5.发明申请公开(公告)号：US20190189299A1
公开(公告)日：2019-06-20
申请号：US16221797
申请日：2018-12-17
Applicant: Korea Atomic Energy Research Institute
Inventor： Sung Il Kim , Kwang Soon Ha , Jin-Ho Song , Yong Mann Song , Byeonghee Lee
CPC classification number: G21D3/06 , G21C17/002 , G21D1/02 , G21F9/001
Abstract: Disclosed herein is a nuclear power plant main steam system, which reduces the atmospheric discharge of radioactive materials generated in an accident, the system including: a decontamination water tank containing decontamination water; and a connection pipe for connecting the decontamination water tank from a main steam pipe which connects a steam generator and a turbine, wherein the connection pipe is connected to the decontamination water tank through a main steam safety valve or a connection valve, wherein the main steam safety valve or the connection valve is configured by a three-way valve and is configured to discharge the generated steam to the air when an accident occurs within a design basis and to transfer the generated steam to the decontamination water tank when a severe accident occurs. A main steam system according to the present invention has an effect of reducing discharge of radioactive materials to the air when a containment bypass accident including a steam generator tube rupture caused by high-temperature steam occurs.
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公开(公告)号：US11646123B2
公开(公告)日：2023-05-09
申请号：US16221797
申请日：2018-12-17
Applicant: Korea Atomic Energy Research Institute
Inventor： Sung Il Kim , Kwang Soon Ha , Jin-Ho Song , Yong Mann Song , Byeonghee Lee
CPC classification number: G21C9/00 , G21D1/02 , G21D3/06 , G21F9/001 , G21C9/012 , G21C17/002 , G21C19/30
Abstract: Disclosed herein is a nuclear power plant main steam system that reduces the atmospheric discharge of radioactive materials generated in an accident. The system includes: a decontamination water tank containing decontamination water; and a connection pipe for connecting the decontamination water tank to a main steam pipe which connects a steam generator and a turbine. A main steam safety valve or a connection valve is provided as a three-way valve configured to discharge the generated steam to the atmosphere when an accident occurs within a design basis and to transfer the generated steam to the decontamination water tank when an accident involving damage to nuclear fuel occurs. The main steam system reduces discharge of radioactive materials to the atmosphere when a containment bypass accident (e.g., a steam generator tube rupture caused by high-temperature steam) occurs.
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公开(公告)号：US09984778B2
公开(公告)日：2018-05-29
申请号：US14308524
申请日：2014-06-18
Inventor： Jin Ho Song , Kwang Soon Ha , Hwan Yeol Kim , Yong Mann Song
CPC classification number: G21C15/18 , G21C9/004 , G21C13/022 , Y02E30/40
Abstract: A nuclear power plant includes a nuclear reactor containment structure housing a nuclear reactor, a pressure vessel containing condensed water therein and having a receiving space located lower than a bottom of the containment structure, a release pipe connecting the containment structure to the pressure vessel such that water vapor and fission products generated in the containment structure in the event of an accident is capable of flowing into the pressure vessel, and a recovery pipe connecting the pressure vessel to the containment structure such that the condensed water received in the pressure vessel is capable of flowing into the containment structure. When a level of the condensed water received in the pressure vessel is higher than a water level in the containment structure, the condensed water flows from the pressure vessel toward the containment structure by a water head difference.
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公开(公告)号：US10991469B2
公开(公告)日：2021-04-27
申请号：US16299330
申请日：2019-03-12
Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTE
Inventor： Sung-Jae Yi , Hyun Sik Park , Rae-Joon Park , Ki Yong Choi , Kwang Soon Ha , Seong-Wan Hong
Abstract: There is provided a cooling apparatus for a molten core material, including: two or more cooling material containers disposed under a reactor vessel including a nuclear reactor core and including a cooling material therein; a first screen disposed under the two or more cooling material containers and including two or more first through-holes; and a second screen disposed under the first screen and including two or more second through-holes, wherein an average size of the two or more first through-holes is greater than an average size of the two or more second through-holes.
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公开(公告)号：US20150108128A1
公开(公告)日：2015-04-23
申请号：US14516501
申请日：2014-10-16
Applicant: Korea Atomic Energy Research Institute
Inventor： Jin Ho Song , Hwan Yeol Kim , Yong Mann Song , Kwang Soon Ha
CPC classification number: G21D3/06 , G21C19/303 , G21C19/317 , G21F9/02 , Y02E30/40
Abstract: Provided is a combustion controller for a combustible gas of a pressurized water reactor nuclear power plant, and more particularly, to a combustion controller for a combustible gas installed in a rear end of a filtered vent system outside a containment vessel or an external chimney, configured to convert a combustible gas such as hydrogen, carbon monoxide, or the like, into steam, carbon dioxide, or the like, and simultaneously, operate by itself with no external power supply. Accordingly, the combustion controller for a combustible gas can perform stable combustion control with no probability of explosion of hydrogen through a recombining reaction of the combustible gas, prevent discharge of carbon monoxide, which is a toxic gas, and prevent backward flow of the flame through the quenching mesh.
Abstract translation: 提供了一种用于加压水反应堆核电厂的可燃气体的燃烧控制器，更具体地，涉及一种安装在安全壳或外部烟囱外部的过滤排气系统后端的可燃气体燃烧控制器， 将可燃气体例如氢气，一氧化碳等转化为蒸汽，二氧化碳等，同时在没有外部电源的情况下自身操作。 因此，用于可燃气体的燃烧控制器可以通过可燃气体的重组反应而不会发生氢的爆炸的可能性，可以进行稳定的燃烧控制，防止作为有毒气体的一氧化碳的排出，并且防止火焰反向流过 淬火网。
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