EP0022032B1 - Device and process for performing exchange reactions in storage pools for radioactive materials - Google Patents
Device and process for performing exchange reactions in storage pools for radioactive materials Download PDFInfo
- Publication number
- EP0022032B1 EP0022032B1 EP80400981A EP80400981A EP0022032B1 EP 0022032 B1 EP0022032 B1 EP 0022032B1 EP 80400981 A EP80400981 A EP 80400981A EP 80400981 A EP80400981 A EP 80400981A EP 0022032 B1 EP0022032 B1 EP 0022032B1
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- Prior art keywords
- water
- exchange
- pool
- base
- producing
- Prior art date
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- 238000000034 method Methods 0.000 title description 4
- 238000006243 chemical reaction Methods 0.000 title 1
- 239000012857 radioactive material Substances 0.000 title 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 238000005342 ion exchange Methods 0.000 claims abstract 4
- 238000001914 filtration Methods 0.000 claims description 8
- 239000000941 radioactive substance Substances 0.000 claims description 8
- 230000000284 resting effect Effects 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000005086 pumping Methods 0.000 abstract 1
- 239000002901 radioactive waste Substances 0.000 abstract 1
- 150000002500 ions Chemical class 0.000 description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 239000012809 cooling fluid Substances 0.000 description 2
- 230000009975 flexible effect Effects 0.000 description 2
- 239000003456 ion exchange resin Substances 0.000 description 2
- 229920003303 ion-exchange polymer Polymers 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000002285 radioactive effect Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- RJFAYQIBOAGBLC-UHFFFAOYSA-N Selenomethionine Natural products C[Se]CCC(N)C(O)=O RJFAYQIBOAGBLC-UHFFFAOYSA-N 0.000 description 1
- 241001080024 Telles Species 0.000 description 1
- 241000769223 Thenea Species 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000002915 spent fuel radioactive waste Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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
Definitions
- the present invention relates to a method and devices for carrying out exchanges in storage basins for radioactive products.
- radioactive substances for example waste or contaminated products
- the water in these basins must undergo exchanges which are either thermal exchanges or ionic exchanges.
- FIG. 5 on page 47 of said article represents an exchanger immersed in liquid sodium filling the vessel of the reactor core.
- This exchanger is traversed by liquid sodium of external origin in order to extract calories from the reactor core. It will be noted that this exchanger does not include a pump for setting in motion the sodium in the tank through the exchanger.
- the present invention therefore relates to a system for carrying out heat and / or ionic exchanges and / or filtrations on the water of a storage tank for radioactive substances, system comprising at least one exchange unit and characterized in that it comprises a base resting on the bottom of the basin and comprising means allowing the water to leave the basin through said bare, and a flaring enabling it to receive a cartridge containing the exchange and / or filtration device, this cartridge comprising at its lower part means for adapting to said flaring of said base and at its upper part a flaring for receiving a castle for circulating the water of the swimming pool and the circulation castle comprising at its base a device adapting to said flaring of said cartridge and a low or medium pressure pump actuated by a motor, the entire exchange unit, with the exception of said motor, being immersed in the water of the storage tank of radioactive substances.
- It also relates to a method for carrying out, on the water of a storage tank for radioactive substances, the thermal and / or ionic exchanges and / or the filtrations necessary for the proper functioning of said tank, process in which at least one of said ones is used exchange units.
- exchange unit we mean a group (or element) individualized, independent and, therefore, interchangeable.
- the exchange unit will consist of a device ensuring the circulation of water from the basin at low or medium pressure and of one or more supplied heat exchange elements, d firstly, in basin water by said device ensuring the circulation of the basin water and, secondly, by an external element ensuring a circulation of a cooling fluid.
- exchange we mean all operations of a physical or chemical nature involving a transfer between the water (or the materials present in the water) of the basins and an element responsible for ensuring a certain treatment of this water. It can be a heat exchange where calories are exchanged, through a wall, between water and an external fluid; it can be a purification of water by filtration; it can be an exchange between ions contained in water and ions of an ion exchanger.
- the exchange part 4 can simply be constituted by a filter whose object is to physically purify the water in the basin; it can also be a device comprising one or more beds of ion exchange resins.
- exchange devices should be used in which the pressure drop in the basin water will be low enough for the supply of these devices to be ensured by low or medium pressure circulation devices.
- said bed may advantageously have the shape of a basket in the shape of an O-ring containing the resin in the form of particles of suitable particle size. , said basket being crossed from the periphery towards its center by the water of the basin.
- thermo and / or ionic exchanges (with or without filtration), which in particular allows said ionic exchanges to be effected at a controlled and adequate temperature.
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Treatment Of Water By Ion Exchange (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
Abstract
Description
La présente invention concerne un procédé et des dispositifs pour réaliser des échanges dans les bassins de stockage de produits radioactifs.The present invention relates to a method and devices for carrying out exchanges in storage basins for radioactive products.
On sait que des substances radioactives (par exemple des déchets ou des produits contaminés) diovent être conservées dans des bassins remplis d'eau. L'eau de ces bassins doit subir des échanges qui sont soit des échanges thermiques, soit des échanges ioniques.It is known that radioactive substances (for example waste or contaminated products) must be kept in tanks filled with water. The water in these basins must undergo exchanges which are either thermal exchanges or ionic exchanges.
Jusqu'à ce jour, ces échanges étaient effectués dans des échangeurs situés en dehors des bassins, ce qui nécessitait l'utilisation de pompes pour véhiculer l'eau de ces bassins jusqu'aux échangeurs. Un tel système a été décrit en détail dans la communication de B. GUSTAFSSON et alias: "A central spent fuel storage in Sweden" pages 119 à 130, publiée dans les Proceedings of the NEA Seminar-Madrid, June 78.Until now, these exchanges were carried out in exchangers located outside the basins, which required the use of pumps to convey water from these basins to the exchangers. Such a system has been described in detail in the communication by B. GUSTAFSSON et alias: "A central spent fuel storage in Sweden" pages 119 to 130, published in the Proceedings of the NEA Seminar-Madrid, June 78.
On a déja décrit (GB-A 916 064) des dispositifs d'échange thermique, en eux-mêmes connus, utilisés dans un château de transport de composés radioactifs. Ces dispositifs ne sont pas autonomes, c'est-à-dire indépendants du château.We have already described (GB-A 916 064) heat exchange devices, in themselves known, used in a castle for transporting radioactive compounds. These devices are not autonomous, that is to say independent of the castle.
On a également décrit (US-A 3 917 953) un dispositif permettant l'introduction d'un fût de stockage de combustibles irradiés dans un conteneur de transport, dispositif par lequel on peut décontaminer la paroi dudit fût par lavage.There has also been described (US Pat. No. 3,917,953) a device allowing the introduction of a barrel for storing irradiated fuels in a transport container, device by which the wall of said barrel can be decontaminated by washing.
Il est en outre connu de plonger un échangeur de chaleur dans la cuve contenant le coeur d'un surgénérateur (article paru dans Nuclear Engineering International, Vol. 23, n° 272-Juin 1978, pages 43 à 60). En particulier, la figure 5 de la page 47 dudit article représente un échangeur plongé dans le sodium liquide emplissant la cuve du coeur du réacteur. Cet échangeur est parcouru par du sodium liquide d'origine externe dans le but d'extraire des calories au coeur du réacteur. On remarquera que cet échangeur ne comporte pas de pompe pour mettre en mouvement le sodium de la cuve à travers l'échangeur.It is also known to immerse a heat exchanger in the tank containing the heart of a breeder (article published in Nuclear Engineering International, Vol. 23, n ° 272-June 1978, pages 43 to 60). In particular, FIG. 5 on page 47 of said article represents an exchanger immersed in liquid sodium filling the vessel of the reactor core. This exchanger is traversed by liquid sodium of external origin in order to extract calories from the reactor core. It will be noted that this exchanger does not include a pump for setting in motion the sodium in the tank through the exchanger.
Il a été trouvé, et c'est là l'objet de la présente invention, qu'il était souhaitable, d'une part, que les échanges soient effectués dans des échangeurs directement plongés dans l'eau des bassins et, d'autre part, que lesdits échangeurs soient d'une technologie telle que la circulation de l'eau des bassins, à travers ces échangeurs, puisse être réalisée à l'aide de dispositifs à basse ou moyenne pression.It has been found, and this is the object of the present invention, that it was desirable, on the one hand, for the exchanges to be carried out in exchangers directly immersed in the water of the basins and, on the other hand on the other hand, that said exchangers are of a technology such that the circulation of water in the basins, through these exchangers, can be carried out using low or medium pressure devices.
La présente invention concerne donc un système pour réaliser des échanges thermiques et/ou ioniques et/ou des filtrations sur l'eau d'un bassin de stockage de substances radioactives, système comportant au moins une unité d'échange et caractérisé en ce qu'il comporte une base reposant sur le fond du bassin et comportant des moyens permettant la sortie de l'eau du bassin à travers ladite bare, et un evasement lui permettant de recevoir une cartouche contenant le dispositif d'échange et/ou de filtration, cette cartouche comportant à sa partie inférieure des moyens pour s'adapter audit évasement de ladite base et à sa partie supérieure un évasement pour recevoir un chateau de circulation de l'eau de la piscine et le château de circulation comportant à sa base un dispositif s'adaptant audit évasement de ladite cartouche et une pompe basse ou moyenne pression actionnée par un moteur, l'ensemble de l'unité d'échange, à l'exception dudit moteur, étant immergé dans l'eau du bassin de stockage de substances radioactives.The present invention therefore relates to a system for carrying out heat and / or ionic exchanges and / or filtrations on the water of a storage tank for radioactive substances, system comprising at least one exchange unit and characterized in that it comprises a base resting on the bottom of the basin and comprising means allowing the water to leave the basin through said bare, and a flaring enabling it to receive a cartridge containing the exchange and / or filtration device, this cartridge comprising at its lower part means for adapting to said flaring of said base and at its upper part a flaring for receiving a castle for circulating the water of the swimming pool and the circulation castle comprising at its base a device adapting to said flaring of said cartridge and a low or medium pressure pump actuated by a motor, the entire exchange unit, with the exception of said motor, being immersed in the water of the storage tank of radioactive substances.
Elle concerne également un procédé pour réaliser, sur l'eau d'un bassin de stockage de substances radioactives, les échanges thermiques et/ou ioniques et/ou les filtrations nécessaires au bon fonctionnement dudit bassin, procédé dans lequel on utilise au moins une desdites unités d'échange.It also relates to a method for carrying out, on the water of a storage tank for radioactive substances, the thermal and / or ionic exchanges and / or the filtrations necessary for the proper functioning of said tank, process in which at least one of said ones is used exchange units.
Par unité d'échange, on entend un groupe (ou un élément) individualisé, indépendant et, de ce fait, interchangeable. Ainsi, lorsqu'on réalise un échange thermique, l'unité d'échange sera constituée d'un dispositif assurant la circulation de l'eau du bassin à basse ou moyenne pression et d'un ou plusieurs éléments d'échanges thermiques alimentés, d'une part, en eau du bassin par ledit dispositif assurant la circulation de l'eau du bassin et, d'autre part, par un élément extérieur assurant une circulation d'un fluide de refroidissement. Par échange, on entend toutes les opérations de nature physique ou chimique impliquant un transfert entre l'eau (ou les matériaux présents dans l'eau) des bassins et un élément chargé d'assurer un certain traitement de cette eau. Il peut s'agir d'échange thermique où des calories sont échangées, à traverse une paroi, entre l'eau et un fluide extérieur; il peut s'agir d'une purification de l'eau par une filtration; il peut s'agir d'un échange entre des ions contenus dans l'eau et des ions d'un échangeur ionique.By exchange unit, we mean a group (or element) individualized, independent and, therefore, interchangeable. Thus, when a heat exchange is carried out, the exchange unit will consist of a device ensuring the circulation of water from the basin at low or medium pressure and of one or more supplied heat exchange elements, d firstly, in basin water by said device ensuring the circulation of the basin water and, secondly, by an external element ensuring a circulation of a cooling fluid. By exchange, we mean all operations of a physical or chemical nature involving a transfer between the water (or the materials present in the water) of the basins and an element responsible for ensuring a certain treatment of this water. It can be a heat exchange where calories are exchanged, through a wall, between water and an external fluid; it can be a purification of water by filtration; it can be an exchange between ions contained in water and ions of an ion exchanger.
L'invention sera mieux comprise en se référant à la figure unique qui représente, en coupe, le bord d'un bassin de stockage de substances radioactives dans lequel est plongé un groupe d'échange (thermique) selon l'invention.The invention will be better understood by referring to the single figure which represents, in section, the edge of a storage tank for radioactive substances in which is immersed a (thermal) exchange group according to the invention.
Sur cette figure on a schématisé:
- - en 1 une paroi latérale verticale, généralement revêtue d'acier inoxydable, du bassin,
- - en 2 le fond de ce bassin également revêtu d'acier inoxydable,
- en 3 une base, reposant sur le fond du bassin, pouvant recevoir la partie échange proprement dite de l'échangeur; cette base est généralement terminée à sa partie supérieure par un évasement permettant une mise en place plus aisée de la partie échange proprement dite; cette base est de préférence maintenue au fond du bassin par un dispositif à démontage à distance facile comme par exemple un dispositif à baïonnette; enfin cette base est munie d'ouverture permettant la sortie de l'eau du bassin après passage de celle-ci dans l'échangeur,
- en 4 la partie échange proprement dite. Cette partie est par exemple un échangeur thermique tubulaire ou un échangeur ionique comportant un ou plusieurs lits d'échange; sur la figure unique on a schématisé un échangeur thermique tubulaire. Cette partie échange 4 se met en place sur la
base 3 grâce à sa forme basse légèrement conique qui correspond à l'évasement de la base; l'extrémité haute de cette partie échange est elle-même évasée de façon à recevoir le "château" de circulation. Le fluide de refroidissement est amené à cette partie échange au moyen detubes 5 de préférence flexibles et aisément démontables; ce fluide peut être par exemple de l'eau non polluée dont la circulation est assurée par une pompe convenable immergée ou non immergée et dont le refroidissement est assuré par un échangeur (par exemple eau/air) situé hors du bassin; sur la figure on a schématisé une telle pompe et un tel échangeur; mais ce fluide peut être également un liquide vaporisable connu. - -en 6 le château de circulation de l'eau du bassin; ce château vient s'emboîter par une partie basse conique dans l'évasement de la partie haute de 4. Ce château est essentiellement constitué par un
moteur 7 situé hors du bassin qui entraîne unehélice 8 laquelle assure l'aspiration de l'eau du bassin à travers une ou plusieursouvertures 9 et le refoulement de cette eau, à travers lapartie échange 4, jusqu'à l'ouverture pratiquée dans labase 3. On peut utiliser d'autres dispositifs de circulation de l'eau qui celui (moteur-hélice) représenté sur la figure; il est cependant essentiel, pour pouvoir bénéficier de tous les avantages de l'invention, que la partie échange ne provoque qu'une faible perte de charge de l'eau du bassin et que, par conséquent, o'n puisse utiliser des dispositifs de circulation du type à basse ou moyenne pression.
- - in 1 a vertical side wall, generally coated with stainless steel, of the basin,
- - in 2 the bottom of this basin also coated with stainless steel,
- in 3 a base, resting on the bottom of the basin, which can receive the actual exchange part of the exchanger; this base is generally finished at its upper part by a flare allowing an easier installation of the exchange part proper; this base is preferably held at the bottom of the basin by an easy-to-dismantle device such as a bayonet device; finally, this base is provided with an opening allowing the water to leave the basin after it has passed through the exchanger,
- in 4 the exchange part proper. This part is for example a tubular heat exchanger or an ion exchanger comprising one or more exchange beds; in the single figure is shown schematically a tubular heat exchanger. This
exchange part 4 is put in place on thebase 3 thanks to its slightly conical low shape which corresponds to the flaring of the base; the upper end of this exchange part is itself flared so as to receive the "castle" of circulation. The cooling fluid is brought to this exchange part by means oftubes 5, preferably flexible and easily removable; this fluid can be, for example, unpolluted water, the circulation of which is ensured by a suitable submerged or non-submerged pump and the cooling of which is provided by an exchanger (for example water / air) situated outside the basin; in the figure there is shown diagrammatically such a pump and such an exchanger; but this fluid can also be a known vaporizable liquid. - -in 6 the basin water circulation castle; this castle is fitted by a conical lower part in the flaring of the upper part of 4. This castle is essentially constituted by a
motor 7 located outside the basin which drives apropeller 8 which ensures the suction of the water from the basin through one ormore openings 9 and the discharge of this water, through theexchange part 4, up to the opening made in thebase 3. Other water circulation devices can be used which ( motor-propeller) shown in the figure; it is however essential, in order to be able to benefit from all the advantages of the invention, that the exchange part causes only a small pressure drop in the water of the basin and that, consequently, one can use devices for low or medium pressure type circulation.
La partie échange 4 peut être simplement constituée par un filtre dont l'objet est d'épurer physiquement l'eau du bassin; elle peut être également un dispositif comportant un ou plusieurs lits de résins d'échanges ioniques.The
Dans tous les cas, il conviendra d'employer des dispositifs d'échanges dans lesquels la perte de charge de l'eau du bassin sera suffisamment faible pour que l'alimentation de ces dispositifs soit assurée par des appareils de circulation à basse ou moyenne pression. Ainsi par exemple dans le cas où la partie échange est constituée par un lit de résines d'échanges ioniques, ledit lit pourra avantageusement avoir la forme d'un panier en forme d'un cylindre torique contenant la résine sous forme de particules de granulométrie convenable, ledit panier étant traversé de la périphérie vers son centre par l'eau du bassin.In all cases, exchange devices should be used in which the pressure drop in the basin water will be low enough for the supply of these devices to be ensured by low or medium pressure circulation devices. . Thus, for example, in the case where the exchange part consists of a bed of ion exchange resins, said bed may advantageously have the shape of a basket in the shape of an O-ring containing the resin in the form of particles of suitable particle size. , said basket being crossed from the periphery towards its center by the water of the basin.
Les avantages des nouveaux groupes d'échange plongés dans les bassins sont nombreux; on peut citer par exemple:
- l'absence de circulation de l'eau polluée des bassins à l'extérieur de ces bassins,
- - le fait que l'on n'ait pas à utiliser, pour faire circuler l'eau des bassins, de pompes, avec presse-étoupe et des vannes, délivrant de l'eau sous pression élevée,
- - la facilité de montage et de démontage des groupes d'échange, et l'autonomie énergétique que peut assurer, dans certains cas, un système de récupération d'énergie mécanique jumelé au système de refroidissement de l'eau des bassins.
- the absence of circulation of polluted water from the basins outside these basins,
- - the fact that one does not have to use, to circulate the water of the basins, pumps, with stuffing box and valves, delivering water under high pressure,
- - the ease of assembly and disassembly of the exchange groups, and the energy autonomy that can ensure, in some cases, a mechanical energy recovery system combined with the cooling system of the water in the basins.
Il est également possible selon la présente invention de réaliser, dans un même échangeur, des échanges thermiques et/ou ioniques (avec ou sans filtration) ce qui permet notamment d'effecteur lesdits échanges ioniques à une température contrôlée et adéquate.It is also possible according to the present invention to carry out, in the same exchanger, thermal and / or ionic exchanges (with or without filtration), which in particular allows said ionic exchanges to be effected at a controlled and adequate temperature.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT80400981T ATE6321T1 (en) | 1979-07-02 | 1980-06-30 | DEVICE AND METHOD FOR CARRYING OUT EXCHANGE REACTIONS IN RADIOACTIVE MATERIAL STORAGE POOLS. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7917159A FR2460529A1 (en) | 1979-07-02 | 1979-07-02 | NEW EXCHANGE GROUPS FOR RADIOACTIVE SUBSTANCES STORAGE BASINS |
FR7917159 | 1979-07-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0022032A1 EP0022032A1 (en) | 1981-01-07 |
EP0022032B1 true EP0022032B1 (en) | 1984-02-15 |
Family
ID=9227402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP80400981A Expired EP0022032B1 (en) | 1979-07-02 | 1980-06-30 | Device and process for performing exchange reactions in storage pools for radioactive materials |
Country Status (7)
Country | Link |
---|---|
US (1) | US4511500A (en) |
EP (1) | EP0022032B1 (en) |
JP (1) | JPS5614194A (en) |
AT (1) | ATE6321T1 (en) |
CA (1) | CA1170377A (en) |
DE (1) | DE3066579D1 (en) |
FR (1) | FR2460529A1 (en) |
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DE19640297A1 (en) * | 1996-09-30 | 1997-12-18 | Siemens Ag | Nuclear fuel element cooling pond decontamination system |
DE19907914C1 (en) * | 1999-02-24 | 2000-06-29 | Siemens Ag | Loading transport container with fuel element, especially spent nuclear fuel element, comprises use of transfer lock which is sealed and freed from pond water before fuel element transfer to transport container outside pond |
US20080137794A1 (en) * | 2005-12-01 | 2008-06-12 | Nac International, Inc. | Systems and methods for loading and transferring spent nuclear fuel |
US9193606B2 (en) * | 2013-08-12 | 2015-11-24 | Institute Of Nuclear Energy Research, Atomic Energy Council | Device for purifying a water sink |
DE202014010122U1 (en) | 2014-08-18 | 2015-04-01 | Westinghouse Electric Germany Gmbh | Fuel element storage tank cooling module and fuel storage tank cooling system |
EP3565786B1 (en) * | 2017-04-20 | 2021-05-05 | Dominion Engineering, Inc. | Modular water purification system for nuclear power plants |
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JPS4315887Y1 (en) * | 1967-05-23 | 1968-07-02 | ||
GB1258763A (en) * | 1968-02-23 | 1971-12-30 | ||
FR1575859A (en) * | 1968-06-10 | 1969-07-25 | ||
DE2034087A1 (en) * | 1970-07-09 | 1972-01-13 | Kraftwerk Union Ag | Fuel element storage pool for nuclear power plants |
US3972772A (en) * | 1971-07-20 | 1976-08-03 | Kraftwerk Union Aktiengesellschaft | Steam power plant for nuclear reactor stations having pressurized water reactors |
US3976541A (en) * | 1974-03-18 | 1976-08-24 | Combustion Engineering, Inc. | Secondary coolant purification system with demineralizer bypass |
CH592352A5 (en) * | 1974-03-20 | 1977-10-31 | Commissariat Energie Atomique | |
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GB1494055A (en) * | 1974-12-24 | 1977-12-07 | Pechiney Ugine Kuhlmann | Molten salt in a nuclear reactor |
CH608126A5 (en) * | 1976-03-29 | 1978-12-15 | Commissariat Energie Atomique | |
DE2621258A1 (en) * | 1976-05-13 | 1977-11-24 | Interatom | NUCLEAR ENERGY PLANT WITH IMPROVED FACILITIES FOR SUBSTITUTE AND EMERGENCY HEAT DISCHARGE |
JPS534200A (en) * | 1976-07-02 | 1978-01-14 | Hitachi Ltd | Treating equipment for radioactive materials |
US4107044A (en) * | 1976-08-25 | 1978-08-15 | Epicor, Inc. | Method of and apparatus for purifying fluids with radioactive impurities |
DE3014289A1 (en) * | 1980-04-15 | 1981-10-22 | Hoechst Ag, 6000 Frankfurt | METHOD FOR REMOVING THE DEGREASING HEAT OF RADIOACTIVE SUBSTANCES |
-
1979
- 1979-07-02 FR FR7917159A patent/FR2460529A1/en active Granted
-
1980
- 1980-06-27 CA CA000355038A patent/CA1170377A/en not_active Expired
- 1980-06-30 AT AT80400981T patent/ATE6321T1/en not_active IP Right Cessation
- 1980-06-30 EP EP80400981A patent/EP0022032B1/en not_active Expired
- 1980-06-30 DE DE8080400981T patent/DE3066579D1/en not_active Expired
- 1980-07-02 JP JP9120180A patent/JPS5614194A/en active Granted
-
1983
- 1983-02-10 US US06/465,504 patent/US4511500A/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
Communication de B. Gustafsson et al. "A central spent fuel storage in Sweden" publieé dans Les Proceedings of the NEA Seminar, Madrid June 78" pages 119-130 * |
Also Published As
Publication number | Publication date |
---|---|
US4511500A (en) | 1985-04-16 |
DE3066579D1 (en) | 1984-03-22 |
JPS5614194A (en) | 1981-02-10 |
ATE6321T1 (en) | 1984-03-15 |
FR2460529B1 (en) | 1984-01-06 |
CA1170377A (en) | 1984-07-03 |
JPH0135317B2 (en) | 1989-07-25 |
EP0022032A1 (en) | 1981-01-07 |
FR2460529A1 (en) | 1981-01-23 |
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