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公开(公告)号：US20230268087A1
公开(公告)日：2023-08-24
申请号：US18024248
申请日：2021-11-09
发明人： Aleksandr Stalevich SIDOROV , Nadezhda Vasilievna SIDOROVA , Tatyana Yaropolkovna DZBANOVSKAYA , Kseniya Konstantinovna BADESHKO
IPC分类号： G21C9/016
CPC分类号： G21C9/016
摘要： Systems for 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 systems enhance reliability of the corium localizing and cooling system of a nuclear reactor. The technical result is achieved due to prevention of the corium localizing and cooling system destruction in the junction area between the vessel and the cantilever truss by use of a membrane with bandage plates installed on the drum within the system.
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公开(公告)号：US20210210226A1
公开(公告)日：2021-07-08
申请号：US17256578
申请日：2018-12-28
发明人： Aleksandr Stalevich SIDOROV , Tatyana Yaropolkovna DZBANOVSKAYA , Mihail Aleksandrovich ROSHCHIN
IPC分类号： G21C9/016
摘要： Device for confining nuclear reactor core melt comprising a melt trap, installed in a reactor vessel bottom and provided with a cooled containment, a filler for melt dilution in the multi-layered vessel, an upper support, a bottom support consisting of a horizontal, sectional, solid or split, embedded plate mounted on the multilayer vessel in the concrete of a reactor pit. The plate and melt trap comprise radial supports connected through fasteners. The radial supports and the clamps have oval holes. The upper support comprises lanyards, mounted in pairs on the upper part of the melt trap body so that the longitudinal axis of each radial support of the melt trap bottom support passes in projection at an equispaced distance from the fitting location of the paired lanyards and connecting the melt trap body with the reactor pit vertical wall. The fasteners have hyperbolic-surface-shaped holes.
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公开(公告)号：US20210202118A1
公开(公告)日：2021-07-01
申请号：US17256575
申请日：2018-12-28
发明人： Aleksandr Stalevich SIDOROV , Tatyana Yaropolkovna DZBANOVSKAYA , Mihail Aleksandrovich ROSHCHIN
摘要： System for confining and cooling melt from the core of a water-moderated nuclear reactor comprising a melt trap. The melt trap is installed in the reactor vessel bottom and provided with a cooled containment, consisting of outer and inner housings between which there is a sealant, and the filler for the melt dilution placed in the melt trap inner body. The melt trap inner body has a damper consisting of a central mantle, bearing ribs connected with the central mantle, titled plates, placed between the bearing ribs, the stops providing fastening of the damper to the melt trap body.
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公开(公告)号：US20230343476A1
公开(公告)日：2023-10-26
申请号：US18024246
申请日：2021-11-09
发明人： Aleksandr Stalevich SIDOROV , Nadezhda Vasilievna SIDOROVA , Tatyana Yaropolkovna DZBANOVSKAYA , Kseniya Konstantinovna BADESHKO
摘要： Systems for ensuring safety of nuclear power plants (NPPs). The systems enhance reliability of the corium localizing and cooling system of a nuclear reactor. The corium localizing and cooling system comprise thermal protection suspended to the cantilever truss, the membrane installed between the cantilever truss and the vessel, and the bandage plates installed on the external and internal side of the membrane. The systems prevent destruction of the corium localizing and cooling system within the junction area between the vessel for the corium receipt and distribution and the cantilever truss under the conditions on non-axisymmetric corium escape from the reactor pressure vessel and falling of the reactor pressure vessel head fragments into the vessel at the initial stage of the corium cooling with water, and consequently to prevent any ingress of water intended for external cooling of the vessel into the vessel.
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公开(公告)号：US20230268086A1
公开(公告)日：2023-08-24
申请号：US18024247
申请日：2021-11-09
发明人： Aleksandr Stalevich SIDOROV , Nadezhda Vasilievna SIDOROVA , Tatyana Yaropolkovna DZBANOVSKAYA , Kseniya Konstantinovna BADEZHKO
IPC分类号： G21C9/016
CPC分类号： G21C9/016
摘要： Systems ensuring safety of nuclear power plants (NPPs) 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.
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公开(公告)号：US20210272710A1
公开(公告)日：2021-09-02
申请号：US17257276
申请日：2019-12-25
摘要： Systems in the field of nuclear energy, in particular, systems that ensure the safety of nuclear power plants (NPP), and can be used in severe accidents that lead to reactor pressure vessel and its containment destruction. In one aspect, the system can increase the safety of a nuclear power plant by excluding the release of liquid and solid radioactive materials (corium) outside the device to confine core melt in the event of a severe accident with core melt discharge out of the nuclear reactor. In a second aspect, the efficiency and reliability of the device for confining core melt can be improved by improving the corium cooling conditions. This can be achieved by the use of filler formed in upper and lower cassettes having vertical and horizontal channels that ensure uniform distribution of the melt in the cooled body.
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