WO2014141853A1 - 貯蔵核燃料の冷却システム - Google Patents
貯蔵核燃料の冷却システム Download PDFInfo
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- WO2014141853A1 WO2014141853A1 PCT/JP2014/054117 JP2014054117W WO2014141853A1 WO 2014141853 A1 WO2014141853 A1 WO 2014141853A1 JP 2014054117 W JP2014054117 W JP 2014054117W WO 2014141853 A1 WO2014141853 A1 WO 2014141853A1
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- WIPO (PCT)
- Prior art keywords
- nuclear fuel
- pool
- density
- cooling liquid
- heat
- Prior art date
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Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/32—Apparatus for removing radioactive objects or materials from the reactor discharge area, e.g. to a storage place; Apparatus for handling radioactive objects or materials within a storage place or removing them therefrom
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0275—Arrangements for coupling heat-pipes together or with other structures, e.g. with base blocks; Heat pipe cores
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/02—Details of handling arrangements
- G21C19/06—Magazines for holding fuel elements or control elements
- G21C19/07—Storage racks; Storage pools
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/02—Details of handling arrangements
- G21C19/08—Means for heating fuel elements before introduction into the core; Means for heating or cooling fuel elements after removal from the core
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F5/00—Transportable or portable shielded containers
- G21F5/06—Details of, or accessories to, the containers
- G21F5/10—Heat-removal systems, e.g. using circulating fluid or cooling fins
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/28—Treating solids
- G21F9/34—Disposal of solid waste
- G21F9/36—Disposal of solid waste by packaging; by baling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D2015/0216—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes having particular orientation, e.g. slanted, or being orientation-independent
-
- 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 present invention relates to a system for cooling nuclear fuel by dissipating decay heat of nuclear fuel stored in a cooling pool to the atmosphere.
- the apparatus is configured to hold a main body in which spent nuclear fuel is immersed in cooling water and housed in a structure floating on the sea surface, and to cool the outer wall surface of the main body with seawater.
- the main body is vertically divided into two by a partition wall.
- a carry-in chamber for spent nuclear fuel is formed in the upper partition, and a pool for storing cooling water is formed in the lower partition.
- the spent nuclear fuel is stored in a storage pipe, the upper end of the storage pipe is fixed to the partition wall, and the lower end is immersed in the cooling water in the pool.
- the cooling water heated by the heat of the spent nuclear fuel is cooled by indirect heat exchange with seawater. Therefore, according to the invention described in JP-A-11-183695, the spent nuclear fuel can be stored while being cooled at sea.
- Japanese Patent Application Laid-Open No. 2007-256230 describes an apparatus configured to use heat generated by spent nuclear fuel for power generation.
- the apparatus is configured to melt spent nuclear fuel contained in a nuclear fuel container by decay heat, evaporate cooling water supplied so as to surround the nuclear fuel container by decay heat, and drive the turbine with the steam. ing.
- it is comprised so that the heat inside a nuclear fuel container may be transmitted to cooling water vapor
- the apparatus comprised so that a solar heat may be stored with the water in a pool
- the example is described in international publication 2002/073099.
- the pool described in International Publication No. 2002/073099 is called a solar pond, and an upper layer having a low salinity concentration is formed on the water surface side of the pool, and a lower layer having a high salinity concentration is formed on the bottom side. It is configured to store solar heat.
- the cooling water used for cooling the nuclear fuel moves up the pool because its density decreases as its temperature increases and its volume increases.
- the cooling water having a low temperature moves to the bottom side of the pool because of its small volume and high density. Therefore, in the apparatus described in Japanese Patent Application Laid-Open No. 11-183695, Japanese Patent Application Laid-Open No. 54-156998, or Japanese Patent Application Laid-Open No. 2012-230079, the temperature on the water surface side of the cooling water is lower than that due to convection. It tends to be higher, which promotes evaporation on the surface of the water, lowers the pool level and exposes stored nuclear fuel to the atmosphere.
- the spent nuclear fuel is not submerged in the bottom of the pool, so that compared with the case where it is submerged in the bottom of the pool, the surrounding cooling water and The temperature difference is small. Therefore, the cooling efficiency of the spent nuclear fuel by cooling water will fall.
- the device described in Japanese Patent Application Laid-Open No. 2007-256230 is a device configured not to store spent nuclear fuel but to continue a nuclear reaction, and stores nuclear fuel in preparation for transportation or disposal. It cannot be applied to a device for doing this.
- the solar pond described in International Publication No. 2002/073099 is a device for storing heat, it cannot be immediately applied to cooling spent nuclear fuel that inevitably generates heat.
- the present invention has been made paying attention to the above technical problem, and provides a cooling system that can effectively cool nuclear fuel stored in a pool and can suppress a drop in the coolant level of the pool due to evaporation. It is the purpose.
- the present invention provides a storage nuclear fuel cooling system for cooling nuclear fuel stored in a pool at the bottom of the cooling liquid in the pool.
- the upper layer formed on the liquid surface side by the above, the lower layer formed on the bottom side of the pool by the cooling liquid having a density higher than that of the upper layer cooling liquid, and the density of the upper layer cooling liquid and the lower layer cooling An intermediate layer formed between the upper layer and the lower layer by the cooling liquid having an intermediate density to the liquid density, and a lower end portion of a heat pipe that performs heat transport as latent heat of the working fluid
- the heat pipe is disposed at a location where heat is transferred to and from the coolant, and an upper end portion of the heat pipe is exposed to the atmosphere, and the nuclear fuel is immersed in the lower layer.
- the heat generated from the nuclear fuel is cooled by being deprived of heat by the high-density coolant that forms the lower layer. Further, the high-density coolant transmits heat to the lower end portion of the heat pipe, and the temperature rise is suppressed.
- the heat pipe evaporates as the temperature at the lower end increases, and the steam flows to the upper end exposed to the atmosphere and dissipates heat at the upper end cooled by the atmosphere. Condensed. That is, since the heat of the cooling liquid in the lower layer is released into the atmosphere by the heat pipe, the nuclear fuel is cooled. Since the lower-layer coolant is heated by the nuclear fuel and the temperature rises, convection of the coolant occurs.
- the convection of the lower layer cooling liquid remains in the lower layer. That is, the convection in the pool is double diffusion convection.
- the heat generated from the nuclear fuel is concentrated in the lower layer, and the heat is dissipated from the lower layer to the atmosphere by the heat pipe, so that the nuclear fuel can be efficiently cooled.
- the heat of the coolant is transported by heat pipes to dissipate it into the atmosphere, so even if the power supply is cut off, the temperature rise of the coolant due to the heat generated by the nuclear fuel is suppressed, Nuclear fuel can be continuously cooled sufficiently.
- the lower layer cooling liquid is salt water in which salt is dissolved in water and has a high salt concentration
- the intermediate layer cooling liquid is salt in water and has a salt concentration lower than that of the lower layer salt water
- the upper layer coolant may be salt water in which the salt is dissolved in water and the salt concentration is lower than the salt water in the intermediate layer or water containing no salt.
- the upper layer, the intermediate layer, and the lower layer can be easily formed in a pool for storing nuclear fuel.
- the coolant in the lower layer may be a coolant whose density in a state where the temperature is increased by heat generated by the nuclear fuel is larger than the density of the coolant in the lower layer.
- the above-described upper layer, intermediate layer, and lower layer can be stably formed.
- one end of the heat pipe may be disposed inside the pool while being immersed in the lower layer in the pool.
- one end of the heat pipe may be embedded in a housing constituting the pool.
- Such a configuration is advantageous in terms of improving the durability of the heat pipe because the heat pipe does not come into contact with the coolant and the radiation exposure is reduced.
- FIG. 1 shows an example of a storage nuclear fuel cooling system according to the present invention, in which a pool 2 is provided inside a storage unit 1.
- the storage unit 1 is a closed structure or a closed room that is normally closed and shut off from the outside.
- the pool 2 has a housing 2a made of concrete, for example, and stores an amount of coolant 4 that can sufficiently immerse the whole nuclear fuel 3 contained in a rack (not shown).
- the nuclear fuel 3 may be used or may be before use, and the pool 2 is configured to store the nuclear fuel 3 by sinking it to the bottom.
- FIG. 1 shows an example of a storage nuclear fuel cooling system according to the present invention, in which a pool 2 is provided inside a storage unit 1.
- the storage unit 1 is a closed structure or a closed room that is normally closed and shut off from the outside.
- the pool 2 has a housing 2a made of concrete, for example, and stores an amount of coolant 4 that can sufficiently immerse the whole nuclear fuel 3 contained in a rack (not shown).
- one end (lower end) 5 a of the heat pipe 5 is disposed around the nuclear fuel 3 (and hence the bottom of the pool 2), and the other end (upper end) 5 b is outside the storage unit 1. (Ie in the atmosphere).
- a number of fins 6 are attached to the other end 5b in order to increase the heat radiation area. Therefore, in the example shown in FIG. 1, the heat of the nuclear fuel 3 is configured to be dissipated into the atmosphere via the heat pipe 5.
- the basic structure of the heat pipe 5 is as conventionally known. To briefly explain the structure, the heat pipe 5 is disposed in a container deaerated from a non-condensable gas such as air. A working fluid that evaporates and condenses in a temperature range is enclosed.
- the container is basically an airtight hollow container, for example, a pipe is used. Since it is necessary to transfer heat between the inside and the outside of the container, the container is preferably made of a material having thermal conductivity, and for example, a copper tube or a stainless tube is preferably used. In addition, you may provide the wick and groove
- the working fluid is a fluid that heats and evaporates, and dissipates heat and condenses, thereby transporting heat in the form of latent heat.
- water, alcohol, or chlorofluorocarbon is used. Therefore, in the heat pipe 5 having the above-described configuration, when heat is applied to a part of the container and the other part is cooled, the working fluid is heated and evaporated, and the steam is directed toward a place where the temperature and pressure are low. It flows and then dissipates heat and condenses.
- one end portion 5a of the heat pipe 5 is an evaporation portion where the working fluid evaporates
- the other end portion 5b is a condensation portion where the working fluid vapor dissipates heat and condenses.
- salt water adjusted to a predetermined concentration is used as the coolant 4.
- a high-density salt water layer is formed on the bottom side, that is, the lower layer of the pool 2, and a low-density salt water (or salt-free water) layer is formed on the liquid surface as side, that is, the upper layer.
- the former is referred to as a lower layer LCZ and the latter is referred to as an upper layer UCZ.
- An intermediate layer NCZ is formed between these layers, and this intermediate layer NCZ is a layer made of salt water having an intermediate density between the salt water density of the upper layer UCZ and the salt water density of the lower layer LCZ, A salinity gradient is formed between the upper layer UCZ and the lower layer LCZ.
- this salt sodium chloride, magnesium chloride, calcium chloride etc. can be used, for example. Therefore, the upper layer UCZ, the intermediate layer NCZ, and the lower layer LCZ are formed by the coolants 4 having different diffusion coefficients.
- FIG. 2 shows an example of the distribution of salinity in the pool 2 described above.
- the salinity in the lower LCZ is in the range of 15 wt% to 30 wt%, and the spent nuclear fuel 3 is immersed in the lower LCZ.
- the salinity concentration in the upper layer UCZ is in the range of 5 wt% to 10 wt%, and is lower than the salinity concentration of the salt water forming the lower layer LCZ.
- the height or width of the upper layer UCZ is lower than the height or width of the lower layer LCZ.
- the salt water in the lower layer LCZ is adjusted so that the density when the temperature is increased is higher than the density of the salt water in the intermediate layer NCZ.
- convection occurs in the upper layer UCZ and the lower layer LCZ.
- no convection occurs in the intermediate layer NCZ. That is, in this invention, it is comprised so that a double diffusion convection may arise in the pool 2, and the convection over the whole pool 2 does not arise.
- Such layer structures having different densities or salinity concentrations may be configured in the same manner as a conventionally known solar pond.
- a high-density (high concentration) coolant 4 that forms the lower layer LCZ is injected into the pool 2 to a depth that allows the nuclear fuel 3 to be completely submerged.
- the aforementioned so-called medium density (medium concentration) coolant 4 that forms the intermediate layer NCZ is injected above the coolant 4 of the lower layer LCZ.
- the medium 4 (medium concentration) of the coolant 4 is gently injected so that the coolant 4 of the lower LCZ that has already been injected is not excessively stirred or mixed into the coolant 4.
- the so-called low density (low concentration) cooling liquid 4 or water forming the upper layer UCZ is used to cool the intermediate layer NCZ. Inject above liquid 4. In that case, the low-density (low concentration) coolant 4 or water is gently injected so that the coolant 4 of the intermediate layer NCZ that has already been injected is not excessively agitated or mixed into the coolant 4. To do. In this way, the process of injecting the cooling liquid 4 into the pool 2 and after completion of the injection, the pool 2 and the cooling liquid 4 in the pool 2 are allowed to stand without applying external force such as mechanical vibration and stirring force.
- the LCZ and the intermediate layer NCZ and the upper layer UCZ can be formed in the pool 2. In addition, you may supply suitably the cooling fluid 4 of the density or density
- FIGS. 3 shows the density distribution
- the line D1 is the line D3 and the line D2 when the calorific value (sunlight ray intensity) is low in the four examples shown in FIG. D4 indicates the density distribution when the calorific value (sunlight intensity) is large.
- the line T1 shows the temperature distribution when the density distribution shown by the line D1 in FIG. 3 is measured
- the line T2 similarly shows the temperature distribution and the line corresponding to the line D2 in FIG.
- T3 represents a temperature distribution corresponding to the line D3 in FIG. 3
- a line T4 represents a temperature distribution corresponding to the line D4 in FIG.
- the coolant 4 of the lower layer LCZ is warmed by the heat, and convection of the coolant 4 occurs.
- the lower layer LCZ becomes a high temperature and high salinity cooling liquid layer, and a low temperature and low salinity cooling liquid layer is formed thereon, so that the convection of the cooling liquid 4 in the lower layer LCZ is the lower layer LCZ, that is, Stay at the bottom of Pool 2.
- the heat generated by the nuclear fuel 3 is concentrated in the lower layer LCZ.
- the evaporation part 5a which is the lower end part of the heat pipe 5 is arrange
- the decay heat is transmitted to the heat pipe 5 and is dissipated into the atmosphere through the heat pipe 5.
- the heat generated from the nuclear fuel 3 is concentrated in the lower layer LCZ where the lower end 5a of the heat pipe 5 is disposed, and the lower end of the heat pipe 5 is directly immersed in the coolant 4.
- the thermal resistance between the coolant 4 and the heat pipe 5 is reduced, the efficiency of heat transfer to the heat pipe 5 is improved, and the cooling efficiency of the nuclear fuel 3 through the heat pipe 5 is improved.
- the temperature in addition to the convection of the cooling liquid 4 in the lower layer LCZ, the temperature is low because heat transfer through the cooling liquid 4 in the intermediate layer NCZ is small. Therefore, the evaporation of the cooling liquid from the liquid level “as” is suppressed.
- FIG. 5 shows another example of the cooling system according to the present invention.
- the lower end portion 5a of the heat pipe 5 is located inside the housing 2a constituting the pool 2 and on the bottom side thereof.
- reference numeral 7 denotes a crane, and the nuclear fuel 3 is taken in and out of the pool 2 by the crane 7.
- the heat of the nuclear fuel 3 concentrates on the lower layer LCZ formed on the bottom side of the pool 2, so that the heat pipe 5 can absorb heat efficiently as in the example shown in FIG. 1. it can. Further, since the lower end portion 5a of the heat pipe 5 is disposed in the housing 2a of the pool 2, a wide space for disposing the nuclear fuel 3 in the pool 2 can be secured. Moreover, since the heat pipe 5 does not directly contact the coolant 4 and radiation exposure is reduced, the durability of the heat pipe 5 can be improved. And since the temperature of upper layer UCZ is low like the example shown in FIG. 1, evaporation of the cooling fluid 4 from the water surface as is suppressed.
- the cooling system for stored nuclear fuel when the nuclear fuel 3 is stored at the bottom of the pool 2, double diffusion convection is generated in the pool 2 and heat is generated at the bottom.
- the evaporation part 5a of the heat pipe 5 is arranged on the bottom side. Therefore, the heat absorption and heat transport by the heat pipe 5 can be efficiently performed, and the cooling efficiency of the nuclear fuel 3 can be improved. Moreover, since the temperature rise of the cooling fluid 4 in the liquid level as can be suppressed by this, evaporation of the cooling fluid 4 can be suppressed and the fall of the liquid level of the pool 2 can be suppressed.
- the present invention it is easy to maintain the liquid level of the pool 2 when the nuclear fuel 3 is stored in the coolant. Note that, as described above, since the coolant is cooled using the heat pipe 5, even if an unexpected situation occurs and the supply of power is cut off, the heat dissipation via the heat pipe 5 is engaged. Thus, the nuclear fuel 3 can be cooled. Accordingly, evaporation of the coolant 4 can be prevented to prevent or suppress a decrease in the liquid level in the pool 2, exposure of the nuclear fuel 3 from the liquid level as, and melting of the coating of the nuclear fuel 3.
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Abstract
Description
Claims (5)
- プール内の冷却液の底部に沈めて保管されている核燃料を冷却する貯蔵核燃料の冷却システムにおいて、
前記プールの内部に、密度の小さい前記冷却液によって液面側に形成された上層と、前記上層の冷却液より密度が大きい前記冷却液によって前記プールの底部側に形成された下層と、密度が前記上層の冷却液の密度と前記下層の冷却液の密度との中間の密度の前記冷却液によって前記上層と前記下層との間に形成された中間層とが設けられ、
作動流体の潜熱として熱輸送を行うヒートパイプの下端部が前記下層の前記冷却液と熱授受する箇所に配置されるとともに、前記ヒートパイプの上端部が大気中に露出され、
前記核燃料は、前記下層中に浸漬されている
ことを特徴とする貯蔵核燃料の冷却システム。 - 前記下層の冷却液は、塩を水に溶解させかつ塩分濃度が高い塩水であり、
前記中間層の冷却液は、塩を水に溶解させかつ塩分濃度が前記下層の塩水より低濃度の塩水であり、
前記上層の冷却液は、塩を水に溶解させかつ塩分濃度が前記中間層の塩水より低濃度の塩水もしくは塩分を含まない水である
ことを特徴とする請求項1に記載の貯蔵核燃料の冷却システム。 - 前記下層の前記冷却液は、前記核燃料が発する熱によって温度が上昇した状態での密度が、前記上層における前記密度の小さい冷却液の密度より大きい冷却液であることを特徴とする請求項1または2に記載の貯蔵核燃料の冷却システム。
- 前記ヒートパイプの一端部は、前記プールにおける前記下層中に浸漬された状態で前記プールの内部に配置されていることを特徴とする請求項1ないし3のいずれかに記載の貯蔵核燃料の冷却システム。
- 前記ヒートパイプの一端部は、前記プールを構成している躯体の内部に埋設されていることを特徴とする請求項1ないし3のいずれかに記載の貯蔵核燃料の冷却システム。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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EP14764284.7A EP2975613B1 (en) | 2013-03-14 | 2014-02-21 | Cooling system for stored nuclear fuel |
JP2014510592A JP5608835B1 (ja) | 2013-03-14 | 2014-02-21 | 貯蔵核燃料の冷却システム |
US14/773,470 US20160019990A1 (en) | 2013-03-14 | 2014-02-21 | Cooling system for stored nuclear fuel |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2013051887 | 2013-03-14 | ||
JP2013-051887 | 2013-03-14 |
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WO2014141853A1 true WO2014141853A1 (ja) | 2014-09-18 |
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PCT/JP2014/054117 WO2014141853A1 (ja) | 2013-03-14 | 2014-02-21 | 貯蔵核燃料の冷却システム |
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US (1) | US20160019990A1 (ja) |
EP (1) | EP2975613B1 (ja) |
JP (1) | JP5608835B1 (ja) |
WO (1) | WO2014141853A1 (ja) |
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US20160131437A1 (en) * | 2014-11-12 | 2016-05-12 | Asia Vital Components Co., Ltd. | Thin heat pipe structure |
JP2018088433A (ja) * | 2016-11-28 | 2018-06-07 | 富士通株式会社 | 冷却システム及び電子機器の冷却方法 |
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JP2013057578A (ja) * | 2011-09-08 | 2013-03-28 | Fujikura Ltd | 核燃料の冷却装置 |
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US4249518A (en) * | 1979-10-22 | 1981-02-10 | Holt Rush D | Method for maintaining a correct density gradient in a non-convecting solar pond |
DE3344525A1 (de) * | 1983-12-09 | 1985-06-20 | Kernforschungsanlage Jülich GmbH, 5170 Jülich | Verfahren zur lagerung abgebrannter brennelemente |
US9646726B2 (en) * | 2013-02-06 | 2017-05-09 | Westinghouse Electric Company Llc | Alternate passive spent fuel pool cooling systems and methods |
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2014
- 2014-02-21 EP EP14764284.7A patent/EP2975613B1/en not_active Not-in-force
- 2014-02-21 WO PCT/JP2014/054117 patent/WO2014141853A1/ja active Application Filing
- 2014-02-21 US US14/773,470 patent/US20160019990A1/en not_active Abandoned
- 2014-02-21 JP JP2014510592A patent/JP5608835B1/ja not_active Expired - Fee Related
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JPS54156998A (en) | 1978-05-29 | 1979-12-11 | Kraftwerk Union Ag | Tank for storing fuel assembly for nuclear reactor |
JPH11183695A (ja) | 1997-12-24 | 1999-07-09 | Ishikawajima Harima Heavy Ind Co Ltd | 使用済み核燃料貯蔵設備 |
WO2002073099A1 (fr) | 2001-03-12 | 2002-09-19 | Mikio Kinoshita | Systeme thermique solaire a bassin solaire et procede de maintenance du bassin solaire |
JP2007256230A (ja) | 2006-03-27 | 2007-10-04 | Toshihisa Shirakawa | 冷却材分離型溶融核燃料原子炉 |
JP2012230079A (ja) | 2011-04-27 | 2012-11-22 | Hitachi-Ge Nuclear Energy Ltd | 原子力プラント、燃料プール水冷却装置及び燃料プール水冷却方法 |
JP2013057578A (ja) * | 2011-09-08 | 2013-03-28 | Fujikura Ltd | 核燃料の冷却装置 |
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EP2975613A4 (en) | 2016-12-07 |
JPWO2014141853A1 (ja) | 2017-02-16 |
EP2975613B1 (en) | 2018-08-22 |
JP5608835B1 (ja) | 2014-10-15 |
US20160019990A1 (en) | 2016-01-21 |
EP2975613A1 (en) | 2016-01-20 |
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