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11.发明公开
公开(公告)号：EP3876243A1
公开(公告)日：2021-09-08
申请号：EP18922096.5
申请日：2018-12-28
IPC分类号： G21C15/18 , G21C17/022
摘要： The invention relates to safe operation support systems of nuclear power plants (NPPs) at severe accidents, in particular, to methods and systems for cooling and cooling control of the reactors molten core.
The technical result of the claimed inventions is to increase the safety of NPP, cooling efficiency of the molten core of a reactor.
The objective of the claimed inventions is to increase the efficiency of cooling the molten core of a reactor by safely removing the heat load from the molten metal mirror, ensuring the elimination of vapour explosions leading to the destruction of the localization area of accidents, the reactor cavity and the containment.
The technical result is achieved by changing the principle of cooling the reactor molten core, which consists in the fact that after the molten core destroys the reactor vessel, the conditions for subsequent cooling of the molten metal are determined by the characteristics of the trap casing, but not of the reactor.
Besides, the technical result is achieved due to the installation of temperature sensors and level gauges designed to monitor the cooling process of the molten core of a reactor.-
公开(公告)号：EP3236474B1
公开(公告)日：2020-07-08
申请号：EP15870436.1
申请日：2015-11-16
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公开(公告)号：EP4459636A1
公开(公告)日：2024-11-06
申请号：EP22916879.4
申请日：2022-12-28
申请人： Joint Stock Company "Atomenergoproekt" , Science and Innovations - Nuclear Industry Scientific Development, Private Enterprise
发明人： SIDOROV, Aleksandr Stalevich , SIDOROVA, Nadezhda Vasilievna , CHIKAN, Kristin Alesandrovich , NEDOREZOV, Andrej Borisovich
IPC分类号： G21C9/016
摘要： The invention related to technology for manufacturing safety systems of nuclear power plants. A method for manufacturing a core catcher cantilever truss is characterized in that two symmetrical parts of the cantilever truss are formed, each of which is made of outer, middle, and inner half-shells, which are connected between each other with radial and parallel force ribs, as well as upper and lower semicircular force plates by welding, with formation of parallel and radial sectors. After that the above-mentioned two symmetrical parts are connected to each other by welding in the area of two parallel sectors located on one Cartesian axis, so that the upper horizontal connection connects the upper semicircular force plates, a lower horizontal welded joint connects the lower semicircular force plates, outer, inner, and middle vertical welded joints connect the outer, inner, and middle half-shells. This improves the reliability of a core melt localization and cooling device.
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公开(公告)号：EP4246533A1
公开(公告)日：2023-09-20
申请号：EP21892433.0
申请日：2021-11-09
申请人： Joint Stock Company "Atomenergoproekt" , Science and Innovations - Nuclear Industry Scientific Development, Private Enterprise
发明人： SIDOROV, Aleksandr Stalevich , SIDOROVA, Nadezhda Vasilievna , DZBANOVSKAYA, Tatyana Yaropolkovna , BADEZHKO, Kseniya Konstantinovna
IPC分类号： G21C9/016
摘要： The invention relates to the field of nuclear energy, in particular, to the systems ensuring safety of nuclear power plants (NPPs), and can be used in severe accidents resulting in destruction of the reactor pressure vessel and containment.
The technical result of the claimed invention is to enhance reliability of the corium localizing and cooling system of a nuclear reactor.
The technical result is achieved due to use of the membrane installed between the cantilever truss and the vessel, bandage plates installed on the external and internal side of the membrane, the hydraulic gas-dynamic damper installed on the internal side of the membrane in the corium localizing and cooling system of a nuclear reactor enabling to prevent any destruction within the leak-tight junction area between the multi-layered vessel and the cantilever truss under the conditions with non-axisymmetric corium flow from the reactor pressure vessel and falling of reactor pressure vessel head fragments into the vessel at the initial stage of the corium cooling with water.-
公开(公告)号：EP3859747A1
公开(公告)日：2021-08-04
申请号：EP18922104.7
申请日：2018-12-28
发明人： SIDOROV, Aleksandr Stalevich , DZBANOVSKAYA, Tatyana Yaropolkovna , ROSHCHIN, Mihail Aleksandrovich
IPC分类号： G21C9/016
摘要： The invention relates to the field of nuclear energy, in particular, to systems that ensure the safety of nuclear power plants (NPPs), and can be used in severe accidents resulting in molten core, destruction of the reactor vessel and molten metal output into the containment volume of NPP.
The technical result of the claimed invention is to increase the reliability of the reactor molten core localization device.
The technical result of reactor molten core localization device is achieved due to the lower support consisting of radial supports of a horizontal embedded slab and radial supports installed in the lower part of the molten metal trap casing joined together by clamps, while the radial supports and the fasteners have oval shaped openings.-
公开(公告)号：EP3236473B1
公开(公告)日：2019-09-04
申请号：EP15870435.3
申请日：2015-11-16
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17.发明授权
公开(公告)号：EP3236472B1
公开(公告)日：2019-08-07
申请号：EP15870434.6
申请日：2015-11-16
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18.发明公开SYSTEM FOR CONFINING AND COOLING MELT FROM THE CORE OF A WATER COOLED-WATER MODIFIED REACTOR 审中-公开从水冷水改性反应堆的核心制约和冷却熔体的系统
公开(公告)号：EP3236472A1
公开(公告)日：2017-10-25
申请号：EP15870434.6
申请日：2015-11-16
CPC分类号： G21C9/016 , G21C13/024 , G21C13/10 , G21C15/18 , Y02E30/40
摘要： The invention relates to nuclear power industry, namely to systems providing safety of nuclear power plants (NPP), and can be used during severe accidents leading to reactor vessel and NPP containment failure. The melt cooling and confinement system includes a cone-shaped guide plate installed under the reactor vessel bottom, cantilever girder installed under the guide plate and supporting the same, core catcher installed under the cantilever girder and equipped with cooled cladding in form of a multi-layer vessel for protection of the external heat-exchange wall from dynamic, thermal and chemical impacts, and filler material for melt dilution inside the multi-layer vessel. The said multi-layer vessel contains internal and external metal layers with an intermediate layer in the form of a non-metal filler located in between. Bearing ribs are installed between the internal and external layers at an azimuth pitch (S pitch ) that meets the following criterion: d ext /15 pitch ext /5, where d ext is external diameter of the vessel. The technical result of the invention is the increased efficiency of heat removal from the melt and improved structural reliability.
摘要翻译： 本发明涉及核电工业，即提供核电站（NPP）安全的系统，并且可用于导致反应堆容器的严重事故和NPP遏制故障。 熔体冷却和约束系统包括安装在反应堆容器底部下面的锥形导向板，安装在导向板下面并支撑导向板的悬臂梁，安装在悬臂梁下方并且装有冷却覆层的多臂形式的冷却覆层， 用于保护外部热交换壁免受动态，热和化学冲击，以及用于在多层容器内部进行熔体稀释的填充材料。 所述多层容器包含内部和外部金属层，中间层为位于其间的非金属填料形式的中间层。 在内层和外层之间以满足以下标准的方位间距（Spitch）安装轴承肋：dext / 15
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