WO2022103303A1 - Система локализации и охлаждения расплава активной зоны ядерного реактора - Google Patents
Система локализации и охлаждения расплава активной зоны ядерного реактора Download PDFInfo
- Publication number
- WO2022103303A1 WO2022103303A1 PCT/RU2021/000494 RU2021000494W WO2022103303A1 WO 2022103303 A1 WO2022103303 A1 WO 2022103303A1 RU 2021000494 W RU2021000494 W RU 2021000494W WO 2022103303 A1 WO2022103303 A1 WO 2022103303A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- flange
- membrane
- melt
- drum
- truss
- Prior art date
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 43
- 239000012528 membrane Substances 0.000 claims abstract description 84
- 239000000155 melt Substances 0.000 claims description 58
- 239000000945 filler Substances 0.000 claims description 13
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 5
- 230000000284 resting effect Effects 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 230000006378 damage Effects 0.000 abstract description 26
- 230000035939 shock Effects 0.000 description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 21
- 230000004807 localization Effects 0.000 description 18
- 239000000498 cooling water Substances 0.000 description 12
- 238000004880 explosion Methods 0.000 description 10
- 230000002093 peripheral effect Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 239000012634 fragment Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 230000005855 radiation Effects 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 102200052313 rs9282831 Human genes 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000001447 compensatory effect Effects 0.000 description 2
- 230000007322 compensatory function Effects 0.000 description 2
- 230000007717 exclusion Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000000048 melt cooling Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C9/00—Emergency protection arrangements structurally associated with the reactor, e.g. safety valves provided with pressure equalisation devices
- G21C9/016—Core catchers
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/18—Emergency cooling arrangements; Removing shut-down heat
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Definitions
- the invention relates to the field of nuclear energy, in particular, to systems that ensure the safety of nuclear power plants (NPP), and can be used in severe accidents leading to the destruction of the reactor vessel and its containment.
- NPP nuclear power plants
- the greatest radiation hazard is posed by accidents with a core meltdown, which can occur in the event of a multiple failure of the core cooling systems.
- a known system [3] for localization and cooling of the melt of the core of a nuclear reactor containing a guide plate installed under the nuclear reactor vessel, and based on a truss-console, installed on embedded parts at the base of a concrete mine, a multilayer body, the flange of which is provided with thermal protection, filler, mounted inside a multilayer housing, consisting of a set of cassettes mounted on top of each other.
- the technical result of the claimed invention is to increase the reliability of the system for localization and cooling of the melt of the core of a nuclear reactor.
- the task to be solved by the claimed invention is to eliminate the destruction of the system for localization and cooling of the melt in the zone of connection of the housing for receiving and distributing the melt with the truss-cantilever under conditions of non-axisymmetric outflow of the melt from the reactor vessel and falling fragments of the bottom of the reactor vessel into the vessel at the initial stage of the water melt cooling, and, consequently, the exclusion of unplanned (untimely) inflow of cooling water into the vessel from the reactor shaft, which provides protection against steam explosions and destruction from the impact of a shock wave.
- the system for localizing and cooling the melt of the core of a nuclear reactor containing a guide plate, a truss-console, a housing with a filler designed to receive and distribute the melt, the flange of which is provided with thermal protection, according to the invention, additionally contains a drum, installed on the casing flange, made in the form of a shell with reinforcing ribs located along its perimeter, resting on the cover and bottom, having tension elements connecting the drum through the support flange welded to it with the casing flange, spacer elements installed on the upper surface of the casing flange, fixing a shell fixed to the upper surface of the housing flange and the outer surface of the drum, a plate connecting the upper surface of the housing flange and the inner surface of the drum, while the space between the platinum, the fixing shell and the thermal protection of the body flange is filled with protective concrete, a convex-shaped membrane, the upper and lower flanges of which are connected to the upper
- One essential feature of the claimed invention is the presence in the system of localization and cooling of the core melt of a nuclear reactor of a convex membrane installed on the drum between the casing flange and the lower surface of the truss-console in such a way that the convex side faces outside the casing, while along the outer surface of the membrane external shroud plates with external fastening elements are installed, providing an external safety shroud gap, and along the inner surface of the membrane, internal shroud plates are installed with internal fastening elements, providing an internal safety shroud gap, while the external and internal shroud plates are rigidly fixed to the upper flange on one side with the help of welded joints, and on the other hand, floating fastening to the lower flange is made by external and internal fastening elements that regulate the external and internal safety shroud gaps, the movement of which limited by constraints.
- This design makes it possible to provide independent radial-azimuth thermal expansions of the truss-console, independent movements of the truss-console and the body under impact mechanical effects on the equipment elements of the melt localization and cooling system, axial-radial thermal expansions of the body, and, therefore, to exclude the ingress of cooling water into the body, designed to cool its outer side, due to the exclusion of the destruction of the zone between the body and the truss-console.
- Banding plates make it possible to preserve the integrity of the membrane when exposed to a shock wave from the side of the reactor vessel during its destruction, as well as to preserve the integrity of the membrane when exposed to a shock wave formed at the initial stage of water cooling of the melt mirror when fragments of the bottom of the reactor vessel fall into the melt or remnants of the core melt.
- the drum is made in the form of a shell with reinforcing ribs located along its perimeter, resting on the cover and bottom.
- the drum has tension elements that connect the drum through a support flange welded to it with the casing flange.
- spacer elements are installed on the upper surface of the housing flange, which provide an adjusting gap between the drum and the housing flange, and a fixing shell, which connects the upper surface of the housing flange and the outer surface of the drum.
- a platinum is installed on the upper surface of the housing flange, connecting the upper surface of the housing flange and the inner surface of the drum, thus forming a space in which the protective concrete is placed.
- FIG. 1 shows a system for localizing and cooling the melt of the core of a nuclear reactor, made in accordance with the claimed invention.
- FIG. 2 shows a drum mounted on a housing flange, made in accordance with the claimed invention.
- FIG. 3 shows a membrane made in accordance with the claimed invention.
- FIG. 4 shows the attachment points of the membrane with shroud plates, made in accordance with the claimed invention.
- FIG. 5 shows a floating mount made in accordance with the claimed invention.
- FIG. 6 shows a drum mounted on a membrane in accordance with the claimed invention
- the system for localizing and cooling the melt of the core of a nuclear reactor contains a guide plate (1) installed under the body (2) of the nuclear reactor.
- the guide plate (1) rests on the truss-console (3).
- the flange (5) of the housing (4) is provided with thermal protection (6).
- Filler (7) for example, may consist of a set of cassettes (10) with various holes (9) made in them.
- a drum (31) made in the form of a shell (32) with reinforcing ribs (33) located along its perimeter, resting on the cover (34) and bottom (35), having tension elements (36) connecting the drum (31) through the support flange (37) welded to it with the flange (5) of the body (4).
- the drum (31) relative to the flange (5) of the housing (4) is installed with an adjusting gap (38) using spacers (39) and sealed with a fixing shell (41), and the voids in the adjusting gap (38) are filled with a layer protective concrete (40).
- a membrane (11) of a convex shape As shown in FIG. 1 - 3 and 5 between the drum (31) and the lower surface of the truss-console (3) there is a membrane (11) of a convex shape.
- the convex side of the diaphragm (I) faces outside the body (4).
- a kind of pocket (23) of convective heat exchange is formed with the upper heat-conducting element (16) connected to the upper flange (14) of the membrane (11 ), and in the lower part of the membrane (11) there is a lower heat-conducting element (17) connected to the lower flange (15) of the membrane (11).
- External and internal shroud plates (18), (19) on the one hand are rigidly fixed to the upper flange (14) of the membrane (11) by means of welded joints (20), and on the other side to the lower flange (15) of the membrane (11) is made floating fastening by means of external and internal fastening elements (21), (22) regulating external and internal safety shroud gaps (24), (25), the movement of which is limited by limiters (26).
- the claimed system for localization and cooling of the melt of the core of a nuclear reactor operates as follows.
- the core melt At the moment of destruction of the vessel (2) of the nuclear reactor, the core melt, under the action of the hydrostatic pressure of the melt and the residual excess gas pressure inside the vessel (2) of the nuclear reactor, begins to flow onto the surface of the guide plate (1) held by the truss-console (3).
- the melt flowing down the guide plate (1), enters the body (4) and comes into contact with the filler (7).
- sectoral non-axisymmetric flow of the melt at elevated pressure in the reactor vessel (2) sectoral destruction of the guide plate (1) and sectoral destruction of the truss-console (3) occur, as a result of which the increased pressure from the reactor vessel (2) directly affects the membrane (11) and drum (31).
- a convex-shaped membrane (11) installed between the flange (5) of the body (4) and the drum (31) ensures that the body (4) is sealed from flooding with water coming to cool its outer surface.
- the membrane (11) consists of vertically oriented sectors (12) connected by welded joints (13).
- the bottom flange (15) is made in the lower part of the membrane (I), and the upper flange (14) is made in the upper part of the membrane (11).
- Membrane (11) provides independent radial-azimuth thermal expansion of the truss-console (3) and axial-radial thermal expansion of the body (4), provides independent movement of the truss-console (3) and the body (4) under impact mechanical effects on the elements of the system equipment localization and cooling of the melt of the core of a nuclear reactor.
- the drum (31) allows you to reduce the height of the membrane, which is associated with the following processes.
- a decrease in the height of the membrane (11) is limited by an increase in its rigidity and a decrease in compensatory abilities with multidirectional changes in the position of the truss-console (3) and the body (4), in which the flange (5) of the body (4) during heating/cooling can move from bottom to top and back, the radius of the flange (5) of the body (4) can increase and decrease, and these changes can occur unevenly both in height and in radius in the direction of the azimuthal axis.
- the truss-console (3) behaves similarly, bending unevenly in the direction of the azimuth axis, which further increases the magnitude of the axial deviations of the distances between the body (4) and the truss-console (3) along the azimuthal axis.
- the deviation of the flange (5) of the body (4) in the radial direction leads to a shift of the membrane (11) in the plane of the flange (5) of the body (4), which, together with the axial deviations of the distances between the body (4) and the truss-console (5) along the azimuthal axis, leads to significant stresses in the membrane (11), limiting the decrease in its height. Under these conditions, to ensure the resistance of the membrane (11) to a rapid rise in pressure and to steam explosions, the height of the membrane (11) is chosen to be minimal, taking into account the necessary compensatory functions when the relative position of the flange (5) of the body (4) and the truss-console (3) changes.
- the ribs (33) of the drum (31) being heated under the action of thermal radiation, transfer the heat load to the shell (32) drum (31), which transfers the thermal energy received from the ribs (33) of the drum (31) and directly from the side of the melt surface to the cooling water.
- the tension elements (36) located between the ribs (33) of the drum (31) provide shielding of the shell (32) of the drum (31) from the effects of thermal radiation, redistributing it due to secondary reradiation to the ribs (33) and the shell (32) of the drum ( 31), thereby reducing the local maximum thermal loads on the shell (32) of the drum (31), associated with the spatial unevenness of thermal radiation from the side of the melt mirror and with the axial uneven cooling of the shell (32) of the drum (31) at different positions of the water level, cooling housing (4).
- the membrane (I) continues to perform its functions of sealing the internal volume of the body (4) and separating the internal and external environments. In the mode of stable water cooling of the outer surface of the housing (4), the membrane (I) is not destroyed, being cooled by water or a steam-water mixture from the outside.
- the state of the bottom of the reactor vessel (2) and the small amount of core melt inside it can change, which can lead to the fall of fragments of the bottom of the reactor vessel (2) with the remaining melt inside the vessel (4), which will lead to a dynamic effect of the melt on the thermal protection (6) flange (5) of the body (4) and will lead to a rise in pressure as a result of the interaction of the melt with water.
- the external and internal shroud plates (18), (19) are located symmetrically on each side of the membrane (11), preventing the development of oscillatory processes and resonance phenomena in membrane (11).
- a feature of the shock wave movement is its direction from the bottom up.
- the lower flange (15) of the membrane (11), the lower part of the membrane (I) and the lower parts of the outer and inner shroud plates (18), (19) are the first to receive the shock load.
- the deformation of the membrane (11) increases from bottom to top.
- the upper ends of the outer and inner shroud plates (18), (19) are fixed, for example, by welded joints (20), to the upper flange (14) of the membrane (I) with fixed outer and inner safety gaps (24), (25), which ensures a decrease in the amplitude of the membrane (11) shape changes when the shock wave moves from bottom to top.
- the drum (31) is made in the form of a complex regular structure.
- the surfaces of the shells (32) and ribs (33) of the drum (31) are vertical and perpendicular to each other.
- the surfaces of the tension elements (36) are parallel to the surfaces of the shells (32) and ribs (33) of the drum (11).
- the surfaces of the cover (34), bottom (35) and support flange (37) of the drum (11) are perpendicular to the surfaces of the shells (32), ribs (33) and tension elements (36).
- Such an arrangement of structural elements provides partial absorption of the shock wave energy in the drum (31), as well as its partial reflection in order to ensure the redistribution of shock wave energy absorption between the elements of the drum (31) and the elements of the truss-cantilever (3) and guide plate (1).
- radial-azimuth oscillations of the shell (32) of the drum (31) occur, the main energy of which is damped by the tension elements (36).
- the shock wave is partially reflected from the middle and upper parts of the drum (31) into the inner part of the housing (4), and partially split into several waves moving in different directions and affecting the truss-console (3) and the guide plate (1), which leads to to weaken the impact of the shock wave on the membrane (11).
- the effect of the shock wave on the horizontally located cover (34) and the support flange (37) of the drum (31) leads to the reflection of the shock wave mainly down, towards the thermal protection (6) of the flange (5) of the housing (4), which also weakens the effect of the shock wave on the membrane (11).
- the drum (31) attachment area to the flange (5 ) is concreted with protective concrete (40) fixing the shell (41) and tension elements (36), as shown in FIG. 2.
- the outer and inner shroud plates (18), (19) are rigidly fixed with outer and inner adjusting nuts (27), (28) to prevent damage to the membrane (11), and when installed in the design position, the outer and inner adjusting nuts (27), (28) are unscrewed until they stop in the stops (26).
- external and internal adjustment gaps (29), (30) are formed, which ensure the free movement of the membrane (11) upwards with thermal expansion of the housing (4) due to sliding of the outer and inner shroud plates (18), (19) along the bottom flange (15) of the membrane (11), as shown in FIG. 5 and 6.
- the upper flange (14) of the membrane (11) is installed on the upper heat-conducting element (16), fixed on the truss-console (3), with which the upper flange (14) of the membrane (11) and the upper heat-conducting element (16) form, a kind of pocket (23), which provides efficient heat exchange with the external environment (cooling water or steam-water mixture).
- Pocket (23) as shown in FIG. 5, for convective heat exchange, the upper flange (14) of the membrane (11) and the upper heat-conducting element (16) are required to protect against overheating before the melt mirror begins to cool, which allows these elements to maintain strength characteristics to withstand shock loads.
- the use of a membrane with shroud plates as part of the system for localizing and cooling the melt of the core of a nuclear reactor made it possible to ensure the sealing of the vessel from flooding with water supplied to cool the outer surface of the vessel, independent radial-azimuth thermal expansions of the truss-console, independent movements of the truss-console and case under seismic and shock mechanical impacts on the equipment elements of the melt localization and cooling system, and the use of the drum made it possible to provide additional heat removal and additional protection of the membrane from the effects of shock waves with an increase in the pressure of the vapor-gas mixture in the internal volume of the case, that is, to increase the reliability of the sealed connecting the hull to the truss-console, which, taken together, made it possible to increase the reliability of the system as a whole.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18/024,248 US20230268087A1 (en) | 2020-11-10 | 2021-11-09 | System for confining and cooling melt from the core of a nuclear reactor |
CA3191251A CA3191251A1 (en) | 2020-11-10 | 2021-11-09 | Corium localizing and cooling system of a nuclear reactor |
CN202180046789.2A CN115867987A (zh) | 2020-11-10 | 2021-11-09 | 一种堆芯熔融物隔离与冷却系统 |
KR1020237007345A KR20230104855A (ko) | 2020-11-10 | 2021-11-09 | 원자로 노심 용융물 억제와 냉각 시스템 |
JP2023512476A JP7506825B2 (ja) | 2020-11-10 | 2021-11-09 | 原子炉における炉心溶融物の局在化および冷却のためのシステム |
EP21892434.8A EP4246534A4 (en) | 2020-11-10 | 2021-11-09 | SYSTEM FOR LOCALIZING AND COOLING THE MELTING MASS IN THE ACTIVE ZONE OF A NUCLEAR REACTOR |
SA522441968A SA522441968B1 (ar) | 2020-11-10 | 2022-12-29 | نظام توطين وتبريد ذوبان قلب (مصهور المنطقة الفعالة) المفاعل النووي |
ZA2023/00142A ZA202300142B (en) | 2020-11-10 | 2023-01-03 | Corium localizing and cooling system of a nuclear reactor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2020136898A RU2750204C1 (ru) | 2020-11-10 | 2020-11-10 | Система локализации и охлаждения расплава активной зоны ядерного реактора |
RU2020136898 | 2020-11-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022103303A1 true WO2022103303A1 (ru) | 2022-05-19 |
Family
ID=76504725
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/RU2021/000494 WO2022103303A1 (ru) | 2020-11-10 | 2021-11-09 | Система локализации и охлаждения расплава активной зоны ядерного реактора |
Country Status (10)
Country | Link |
---|---|
US (1) | US20230268087A1 (ru) |
EP (1) | EP4246534A4 (ru) |
JP (1) | JP7506825B2 (ru) |
KR (1) | KR20230104855A (ru) |
CN (1) | CN115867987A (ru) |
CA (1) | CA3191251A1 (ru) |
RU (1) | RU2750204C1 (ru) |
SA (1) | SA522441968B1 (ru) |
WO (1) | WO2022103303A1 (ru) |
ZA (1) | ZA202300142B (ru) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2771264C1 (ru) * | 2021-10-26 | 2022-04-29 | Акционерное Общество "Атомэнергопроект" | Ферма-консоль устройства локализации расплава |
Citations (9)
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---|---|---|---|---|
US4442065A (en) * | 1980-12-01 | 1984-04-10 | R & D Associates | Retrofittable nuclear reactor core catcher |
US5307390A (en) * | 1992-11-25 | 1994-04-26 | General Electric Company | Corium protection assembly |
RU2253914C2 (ru) * | 2003-08-18 | 2005-06-10 | Хабенский Владимир Бенцианович | Система локализации и охлаждения кориума аварийного ядерного реактора водо-водяного типа |
RU2575878C1 (ru) | 2014-12-16 | 2016-02-20 | Акционерное Общество "Атомэнергопроект" | Система локализации и охлаждения расплава активной зоны ядерного реактора водоводяного типа |
RU2576516C1 (ru) | 2014-12-16 | 2016-03-10 | Акционерное Общество "Атомэнергопроект" | Система локализации и охлаждения расплава активной зоны ядерного реактора водоводяного типа |
RU2576517C1 (ru) | 2014-12-16 | 2016-03-10 | Акционерное Общество "Атомэнергопроект" | Система локализации и охлаждения расплава активной зоны ядерного реактора водоводяного типа |
KR20170126361A (ko) * | 2016-05-09 | 2017-11-17 | 포항공과대학교 산학협력단 | 노심용융물 냉각을 위한 기둥과 경사면을 가진 다공성재질의 원자력발전소 코어 캐쳐. |
RU2696619C1 (ru) * | 2018-09-25 | 2019-08-05 | Акционерное Общество "Атомэнергопроект" | Устройство локализации расплава активной зоны ядерного реактора |
RU2700925C1 (ru) * | 2018-09-25 | 2019-09-24 | Акционерное Общество "Атомэнергопроект" | Устройство локализации расплава активной зоны ядерного реактора |
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CN105551540B (zh) * | 2015-12-16 | 2019-12-13 | 中国核电工程有限公司 | 一种堆芯熔融物分组捕集容器 |
CN109273109B (zh) * | 2018-11-13 | 2020-01-31 | 中国核动力研究设计院 | 一种熔融物安全壳滞留系统 |
RU2736545C1 (ru) * | 2020-03-20 | 2020-11-18 | Акционерное Общество "Атомэнергопроект" | Система локализации и охлаждения расплава активной зоны ядерного реактора |
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2020
- 2020-11-10 RU RU2020136898A patent/RU2750204C1/ru active
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2021
- 2021-11-09 KR KR1020237007345A patent/KR20230104855A/ko unknown
- 2021-11-09 WO PCT/RU2021/000494 patent/WO2022103303A1/ru active Application Filing
- 2021-11-09 US US18/024,248 patent/US20230268087A1/en active Pending
- 2021-11-09 CN CN202180046789.2A patent/CN115867987A/zh active Pending
- 2021-11-09 CA CA3191251A patent/CA3191251A1/en active Pending
- 2021-11-09 EP EP21892434.8A patent/EP4246534A4/en active Pending
- 2021-11-09 JP JP2023512476A patent/JP7506825B2/ja active Active
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2022
- 2022-12-29 SA SA522441968A patent/SA522441968B1/ar unknown
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2023
- 2023-01-03 ZA ZA2023/00142A patent/ZA202300142B/en unknown
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EP4246534A1 (en) | 2023-09-20 |
KR20230104855A (ko) | 2023-07-11 |
CN115867987A (zh) | 2023-03-28 |
SA522441968B1 (ar) | 2024-06-23 |
JP2023548268A (ja) | 2023-11-16 |
JP7506825B2 (ja) | 2024-06-26 |
ZA202300142B (en) | 2023-09-27 |
US20230268087A1 (en) | 2023-08-24 |
CA3191251A1 (en) | 2022-05-19 |
RU2750204C1 (ru) | 2021-06-24 |
EP4246534A4 (en) | 2024-07-24 |
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