EP2700077B1 - Wärmeleitfähiges Element zur verbesserten Herstellung von Verpackungen zum Transport und/oder zur Lagerung von radioaktivem Material - Google Patents
Wärmeleitfähiges Element zur verbesserten Herstellung von Verpackungen zum Transport und/oder zur Lagerung von radioaktivem Material Download PDFInfo
- Publication number
- EP2700077B1 EP2700077B1 EP12711181.3A EP12711181A EP2700077B1 EP 2700077 B1 EP2700077 B1 EP 2700077B1 EP 12711181 A EP12711181 A EP 12711181A EP 2700077 B1 EP2700077 B1 EP 2700077B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- package
- thermal conduction
- radiological protection
- intended
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000004519 manufacturing process Methods 0.000 title claims description 16
- 239000012857 radioactive material Substances 0.000 title claims description 10
- 238000004806 packaging method and process Methods 0.000 title description 23
- 238000003860 storage Methods 0.000 title description 16
- 239000000463 material Substances 0.000 claims description 30
- 238000003466 welding Methods 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 229910052770 Uranium Inorganic materials 0.000 claims description 3
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 2
- 239000010962 carbon steel Substances 0.000 claims description 2
- 238000005266 casting Methods 0.000 description 27
- 230000000712 assembly Effects 0.000 description 9
- 238000000429 assembly Methods 0.000 description 9
- 230000000007 visual effect Effects 0.000 description 8
- 239000003758 nuclear fuel Substances 0.000 description 6
- 239000000446 fuel Substances 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000013016 damping Methods 0.000 description 4
- ALKZAGKDWUSJED-UHFFFAOYSA-N dinuclear copper ion Chemical compound [Cu].[Cu] ALKZAGKDWUSJED-UHFFFAOYSA-N 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- 238000012163 sequencing technique Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000002436 steel type Substances 0.000 description 2
- 208000031968 Cadaver Diseases 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011824 nuclear material Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000002915 spent fuel radioactive waste Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
-
- 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
- G21F5/005—Containers for solid radioactive wastes, e.g. for ultimate disposal
- G21F5/008—Containers for fuel elements
Definitions
- the present invention relates to the field of transportation and / or storage of radioactive materials, such as fresh or irradiated nuclear fuel assemblies.
- the invention relates to a packaging of radioactive materials, of the type comprising thermal conduction elements arranged in contact with a lateral body, and delimiting in pairs cavities filled with radiological protection blocks, in particular intended to form a barrier effective against neutrons.
- storage devices are used, also called “basket” or “rack” storage.
- baskets are for example known documents US2004 / 062338 and EP0087350 .
- These storage devices usually of cylindrical shape and of substantially circular section, have a plurality of adjacent housings each adapted to receive a nuclear fuel assembly.
- the storage device is intended to be housed in the housing cavity of a package in order to form together with it a container for transporting and / or storing nuclear fuel assemblies, wherein the radioactive material is perfectly confined.
- the aforementioned housing cavity is generally defined by a lateral body extending in a longitudinal direction of the package, this lateral body being for example formed by a metal ferrule.
- the lateral body is surrounded by a plurality of thermal conduction elements contacting it.
- radiological protection blocks are arranged between these conduction elements, in particular to form a barrier against neutrons emitted by the fuel assemblies housed in the cavity.
- each heat conduction element comprises an inner part intended to be in contact with the lateral body of the package, and an outer portion intended to form a portion of an outer envelope of the package, this outer portion retaining the blocks. protection in the external radial direction.
- an intermediate portion is arranged between the inner and outer portions to maintain them relative to each other.
- the inner, outer and intermediate parts are made of copper or one of its alloys.
- the outer parts are assembled end-to-end, by welding their copper ends.
- the corrosion resistance of these copper / copper welds is low, while the packaging can be subjected to strong corrosive atmospheres, especially when stored on sites exposed to sea air, or during the operations of loading spent fuel into the packaging, when these operations are carried out under water.
- the outer surface of the multiple welds must therefore undergo a treatment capable of imparting an anti-corrosion function. It may be the application of a nickel layer, or a heat treatment type HVOF (English High Velocity Oxygen Fuel Thermal Spray Process). In either case, the treatment operated makes the manufacturing process more complex, which penalizes it in terms of time and cost.
- the invention therefore aims to at least partially overcome the disadvantages mentioned above, relating to the achievements of the prior art.
- said external portion is equipped, at each of its two opposite ends, with a welding connection zone to another thermal conduction element, each connection zone being made of steel.
- the invention therefore makes it possible to carry out welding operations of the steel-steel type between the external parts of the conduction elements, which confers the following advantages.
- connection areas are made of stainless steel, it is no longer necessary to proceed with nickel treatment or heat treatment of the HVOF type of the welds made, since the anti-corrosion function is provided by the very nature of the welding.
- the manufacturing process of the packaging comprising such thermal conduction elements is thereby simplified and therefore less expensive.
- the design adopted generally facilitates the manufacturing process of the packaging, while retaining most of these conduction elements in copper or in one of its alloys, in order to fulfill its primary function of heat transfer to the outside the package.
- connection zones The steel-steel welding of the connection zones is generally carried out around 180 ° C., at which temperature there is only a very slight risk of degradation of the radiological protection material retained by the conduction elements to be welded.
- the invention makes it possible not only to eliminate the preheating step of the elements of thermal conduction, but also allows the establishment of radiological protection blocks on the packaging before welding the steel zones. This removes the sequencing constraint of the steps of the package manufacturing method encountered in the prior art.
- the introduction of the radiological protection material is no longer necessarily performed by the longitudinal ends of these cavities. It can in fact be carried out at several points spaced longitudinally at the level of the provisionally open face of the cavity concerned, with the packaging oriented horizontally, which limits the risk of defects in filling.
- each connection zone is made of carbon steel, or even more preferably of stainless steel.
- the thermal conduction element has a cross section of overall shape in U or S.
- each connection zone extends over a circumferential length of between 5 and 15% of the circumferential length of its associated external part.
- the inner, outer and intermediate parts are made in one piece, or from at least two portions connected by welding.
- the invention also relates to a packaging for the transport and / or storage of radioactive materials, comprising a lateral body and a plurality of thermal conduction elements of the type described above, the internal parts of which are arranged in contact with said lateral body, and whose external parts form part of said outer casing of said package which retains radiological protection means, said outer casing being completed by said connection zones equipping said external parts, as well as by welds connecting these connection areas two to two.
- any two elements of any thermal conduction and directly consecutive define, in particular with their welded connection areas, a cavity housing a radiological protection block, preferably made by casting or a prefabricated block.
- the invention also relates to a method of manufacturing a package for the transport and / or storage of radioactive materials as described above, comprising, for at least one of said radiological protection blocks, the casting a radiological protection material in one of said two thermal conduction elements for defining the cavity in which said block is to be housed, said casting being performed with this thermal conduction element assembled on the package.
- the visual control of the block becomes very easily achievable over its entire free surface to be subsequently covered by the other heat conduction element.
- the introduction of the radiological protection material can be carried out at several points spaced longitudinally at the level of the face temporarily open the cavity concerned, which limits the risk of defects in filling.
- said assembly step on the package of the other of said two thermal conduction elements comprises the fixing of its inner part on the lateral body, for example by welding or by screwing. It also includes steel-steel welding, its dedicated connection area, with the connection area of the first element already attached to the package and housing the radiological protection block.
- said assembly step on the packaging of the other of said two heat conduction elements could comprise only the aforementioned steel-steel weld, so that its internal part is only in contact with the lateral body, without to be fixed on the latter.
- said cavities are successively filled, preferably one by one, with said package oriented horizontally, and introducing the radiological protection material from above.
- This provides a great ease of implementation of the process, in particular of its step of casting the radiological protection material, whose Associated risks of filling defects are extremely low.
- the casting of the radiological protection material takes place directly in said one of said two thermal conduction elements intended to define the cavity in which said block is intended to be housed.
- the visual inspection after the casting is very easily achievable, over the entire length of the cavities. Once this inspection is performed, the cavity is closed by mounting the other of the two heat conduction elements on the package.
- the casting of the radiological protection material is carried out through at least one orifice provided on a tool mounted above said one of said two thermal conduction elements for defining the cavity in which said block is intended to be housed, the other of said two thermal conduction elements being assembled on the package after removal of said tooling.
- the tooling can be easily designed to visually verify the proper placement of the radiological protection material in the cavity, for example by means of overflow orifices distributed in the longitudinal direction of the package.
- the casting of the radiological protection material is carried out through at least one orifice provided on the intermediate portion of said other of said two conduction elements.
- thermal provisionally mounted above said one of said two thermal conduction elements for defining the cavity in which said block is intended to be housed, the other of said two heat conduction elements being then removed and reassembled permanently on the package.
- Disassembly and reassembly of the second conduction element makes it possible to operate, between these two steps, the visual control of the quality of the block.
- This third embodiment simply consists in replacing the tooling of the second mode with the second conduction element.
- This third embodiment could alternatively be implemented by casting the radiological protection material through at least one orifice provided on the intermediate portion of said other one of said two heat conduction elements, permanently mounted on the packaging above. above said one of said two thermal conduction elements for defining the cavity in which said block is to be housed. This alternative is in particular retained when no visual check of the blocks is to be made. This second element of thermal conduction therefore does not have to be temporarily mounted, disassembled, then reassembled permanently on the packaging.
- the welding of the two-to-two connection zones is preferably carried out after all the radiological protection blocks of the packaging have been poured into their associated cavity.
- a container 1 for the transport and / or storage of nuclear fuel assemblies we see a container 1 for the transport and / or storage of nuclear fuel assemblies. It is recalled in this respect that the invention is in no way limited to the transport / storage of this type of nuclear material.
- the container 1 generally comprises a packaging 2 object of the present invention, inside which there is a storage device 4, also called storage basket.
- the device 4 is intended to be placed in a housing cavity 6 of the package 2, as shown in FIG. figure 1 on which it is also possible to see the longitudinal axis 8 of this package, coincident with the longitudinal axes of the storage device and the housing cavity.
- longitudinal should be understood as parallel to the longitudinal axis 8
- transverse should be understood as orthogonal to the same longitudinal axis 8.
- the storage device 4 comprises a plurality of adjacent housings arranged parallel to the axis 8, the latter being each adapted to receive at least one fuel assembly of square or rectangular section, and preferably only one.
- the container 1 and this device 4 have been shown in a vertical loading / unloading position of the fuel assemblies, different from the horizontal / recumbent position usually adopted during the transportation of the assemblies.
- the package 2 firstly has a bottom 10 on which the device 4 is intended to rest in a vertical position, a cover 12, and a lateral body 14 extending around and according to the longitudinal axis 8, parallel to the longitudinal direction.
- the bottom 10 and the cover 12 are thus spaced from one another in the longitudinal direction of the package, parallel to the axis 8.
- the lateral body 14 which defines the housing cavity 6, with the aid of a lateral internal surface of substantially cylindrical shape and of circular section, and of axis coinciding with the axis 8.
- the lateral body 14 can take the form of a thick metal ferrule, preferably made of steel.
- the bottom 10, which defines the bottom of the cavity 6 open at the cover 12, can be made in one piece with at least a portion of the lateral body 14, without departing from the scope of the invention.
- the package 2 further comprises, surrounding and contacting the outer surface of the lateral body 14, a plurality of heat conduction elements 20 extending radially outwardly, as well as along a large part of the length of the body. this body 14, in the direction of the axis 8.
- the elements 20 are profiles specific to the present invention, which will be detailed below with reference to the following figures. They make it possible to evacuate the heat released by the fuel assemblies present in the storage basket 4 towards the outside of the package.
- the blocks are preferably obtained by casting, as will be explained below, and made of any material deemed appropriate by those skilled in the art, such as a resin.
- the heat conduction elements 20 also participate in forming an outer casing 24 of the package, centered on the axis 8.
- this casing can be equipped with fins to promote exchanges thermal with the surrounding air.
- the package is also provided with damping hoods (not shown) respectively covering the cover 12 and the bottom 10 of this package, as well as two damping rings 60 surrounding the lateral body 14, and arranged respectively at the longitudinal ends of the These crowns 60 protrude radially outwards with respect to the envelope 24, so as to constitute preferred impact zones in the event of an accidental fall, when the packaging is oriented horizontally.
- one of the heat conduction elements 20 can be seen in the form of a U-shaped section section lying on one of its two branches for contacting the outer surface of the lateral body of the package. .
- the branch of the U in question forms an inner radial portion 30 of the element 20. It is connected at one of its ends to an end of an intermediate portion 32 forming the base of the U, the other end of which is connected to an outer portion 34 forming the other leg of the U.
- This outer portion 34 is intended to form a portion of the outer casing of the package, mentioned above.
- each element 20 are made of copper or one of its alloys, for example in one piece.
- each connection zone 36 being made of steel, preferably stainless steel.
- Each zone 36 takes the form of a bar extending over the entire length of the profile 20, a circumferential length much less than that of the outer portion.
- the circumferential length "1" of each zone 36 is between 5 and 15% of the circumferential length "L" of the outer portion 34.
- connection areas 36 extends the free end of the U branch 34, while the other zone 36 extends from the angle formed by the same branch 34 and the base of the U.
- the heat conduction elements 20 are fixed to the lateral packaging body 14 by their internal part 30, for example by welding or by bolting, a surface contact here being preferred so as to obtain a good heat transfer.
- the elements 20 are also attached end to end by welding the connecting zones 36 facing each other.
- the welds 40 obtained are steel-steel type, made at a temperature of about 180 ° C. Preferably, no anti-corrosion treatment is required on these welds 40, particularly when the zones 36 are made of stainless steel.
- the outer casing 24 of the package consists of the external parts 34, the connection zones 36, and the welds 40.
- the heat conduction elements 20 define in pairs cavities in which the radiological protection blocks 22 are housed. specifically, each cavity 50 is delimited radially inwardly by the inner portion 30 of a first member 20 and a portion of the outer surface of the body 14 of the package. It is delimited radially outwards by the outer portion 34 of this same first element 20, as well as by the connection zone 36 provided at the free end of this branch 34. The radially outward delimitation is also provided by the connection zone 36 of a second conduction element 20, and by the weld 40 connecting it to the aforementioned zone 36 belonging to the first element. Each cavity 50 is further delimited in the circumferential direction 52, in both directions, respectively by the intermediate portions 32 of the first and second conduction elements 20.
- the cavities 50 are closed at their longitudinal ends by the structure of the damping rings 60 represented on the figure 1 .
- the cavities 50 are filled successively, one by one and from above, with the packaging 2 oriented horizontally.
- the package is then positioned so that the last conduction element 20a which has just been assembled on the lateral body 14 is open. substantially vertically upwards, the U being substantially straight. At this moment represented on the figure 3a the cavity 50, open towards the top, is empty. On the other hand, the other conduction element, intended to close this cavity, is not yet assembled on the package.
- the cavity 50 is then filled by casting a neutron protection material, such as resin.
- a neutron protection material such as resin.
- This casting schematized by the arrow 64 of the figure 3b , is carried out directly in the volume delimited by the first element 20a and by the damping crowns of the package, by placing the casting machine (not shown) above this volume to be filled.
- the material leaving the machine can therefore flow directly, by gravity, into the dedicated volume, passing through the opening defined between the two free ends of the branches of the U.
- This casting is preferably carried out at several injection points. material, distributed along the longitudinal direction of the package.
- the casting is stopped when the desired level of filling is reached in the cavity 50, this level being preferably on or near the upper connection zone 36 of the element 20a.
- the casting machine is then removed, while the cast material solidifies by polymerization in the cavity 50.
- the solid block obtained it is easily possible to operate its visual control over its entire length, at the upper surface. free of the block, oriented horizontally upwards.
- the visual check of the quality of the neutron protection material consists, for example, in checking, after solidification, that there are no emerging cracks in the material, these cracks possibly coming from a polymerization problem related to a poor control. temperature during the casting step, a problem of proportion of the mixture of the material.
- the second conduction element 20b is assembled on the package, by screwing or welding its inner portion 30 to the lateral body, as can be seen on the figure 3c . Its intermediate portion 32 closes the cavity 50, and its lower connection zone 36 comes opposite the upper connection zone 36 of the first element 20a, a contact possibly occurring between these two zones.
- the package is then rotated about its axis 8 so as to properly orient the second conduction element 20b, so as to operate its filling in a manner identical to that just described.
- This succession of operations is then repeated as many times as necessary to cover the entirety of the lateral packaging body 14 with the conduction elements 20 and the blocks 22. It is moreover preferably only after the formation of all the blocks 22 that the welding of the connection zones 36 is made, two by two. This allows in particular to make the welds in one order different from that in which they follow each other in the circumferential direction.
- the first step is always to position the package so that the last conduction element 20a which has just been assembled on the lateral body 14 is open substantially vertically upwards, the U being substantially straight. At this moment represented on the figure 4a the cavity 50, open towards the top, is empty. On the other hand, the other conduction element, intended to close this cavity, is not yet assembled on the package.
- the cavity 50 is then filled, either by direct casting in the volume delimited by the first element 20a, but by passing through orifices 70 made through a tool 72 mounted above the element 20a, for example by resting on the upper connection zone 36, as shown schematically on the figure 4b .
- the casting machine therefore makes it possible to introduce the material into the cavity provisionally closed by the tool, by the orifices 70 made in this tool 72, preferably distributed in the longitudinal direction.
- the casting, schematized by the arrow 64 of the figure 4b is stopped when the desired level of filling is reached in the cavity 50.
- other orifices may be made through the tool 72, so as to constitute orifices of "overflow" allowing visually indicate to the operator when filling is complete.
- the second conduction element 20b is assembled on the package, by screwing or welding its inner portion 30 on the lateral body, as is visible on the figure 4c in a manner analogous to that described for the first preferred embodiment.
- the tooling is replaced by the second conduction element 20b, which is therefore temporarily installed on the package 2 during casting 64, which takes place through the orifices 70 provided in the intermediate portion 32 of this conduction element 20b .
- the second member 20b is disassembled, for example after having been provisionally mounted by partial bolting on the lateral body 14, then the inspection of the block is made. Then, the second conduction element 20b is reassembled permanently on the lateral body, always by bolting or welding.
- the heat conduction elements 20 take a section of overall shape S, and no longer U. This variant is represented on the figure 6 .
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
- Gasket Seals (AREA)
- Buffer Packaging (AREA)
- Stackable Containers (AREA)
- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Claims (14)
- Wärmeleitungselement (20) für eine Verpackung zum Transport und/oder zur Zwischenlagerung von radioaktiven Materialien, umfassend:- ein Innenteil (30), das dazu ausgelegt ist, in Kontakt mit einem lateralen Körper (14) der Verpackung zu sein;- ein Außenteil (34), das dazu ausgelegt ist, einen Bereich einer Außenumhüllung (24) der Verpackung zu bilden, das radiologische Schutzmittel enthält (22);- ein Zwischenteil (32), das zwischen dem Innen- und dem Außenteil angeordnet ist,
wobei das Innen-, das Außen- und das Zwischenteil aus Kupfer oder aus einer seiner Legierungen hergestellt sind,
dadurch gekennzeichnet, dass das Außenteil (34) an jedem seiner zwei entgegengesetzten Enden mit einer Zone (36) zur Schweißverbindung mit einem anderen Wärmeleitungselement (20) ausgestattet ist, wobei jede Verbindungszone (36) aus Stahl hergestellt ist. - Wärmeleitungselement nach Anspruch 1, dadurch gekennzeichnet, dass jede Verbindungszone (36) aus Kohlenstoffstahl oder aus rostfreiem Stahl hergestellt ist.
- Wärmeleitungselement nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, dass es einen im allgemeinen U- oder S-förmigen Querschnitt aufweist.
- Wärmeleitungselement nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass jede Verbindungszone (36) sich über eine Umfangslänge (I) erstreckt, die zwischen 5 und 15 % der Umfangslänge (L) ihres zugeordneten Außenteils enthalten ist.
- Wärmeleitungselement nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Innen-, das Außen- und das Zwischenteil einstückig hergestellt sind, oder aber ausgehend von wenigstens zwei Bereichen, die durch Verschweißung verbunden sind.
- Verpackung (2) für den Transport und/oder die Zwischenlagerung von radioaktiven Materialien, umfassend einen lateralen Körper (14) sowie eine Mehrzahl von Wärmeleitungselementen (20) nach einem der vorhergehenden Ansprüche, deren Innenteile (30) in Kontakt mit dem lateralen Körper (14) angeordnet sind, und deren Außenteile (34) einen Teil der Außenumhüllung (24) der Verpackung bilden, die die radiologischen Schutzmittel (22) enthält, wobei die Außenumhüllung durch die Verbindungszone (36) vervollständigt ist, mit denen die Außenteile ausgestattet sind, sowie durch Verschweißungen (50), welche diese Verbindungszonen paarweise verbinden.
- Verpackung nach Anspruch 6, dadurch gekennzeichnet, dass zwei beliebige und direkt aufeinanderfolgende Wärmeleitungselemente (20), insbesondere mit ihren verschweißten Verbindungszonen (36), einen Hohlraum (50) definieren, der einen radiologischen Schutzblock (22) aufnimmt.
- Verfahren zur Herstellung einer Verpackung (2) für den Transport und/oder die Zwischenlagerung von radioaktiven Materialien nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass für wenigstens einen der radiologischen Schutzblöcke (22) das Gießen eines radiologischen Schutzmaterials in eines der zwei Wärmeleitungselemente (20a) realisiert wird, die dazu ausgelegt sind, den Hohlraum (50) zu definieren, in dem der Block (22) aufgenommen werden soll, wobei beim Gießen dieses Wärmeleitungselement (20a) an der Verpackung angeordnet ist.
- Verfahren nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass für wenigstens einen der radiologischen Schutzblöcke (22) die folgenden Schritte nacheinander realisiert werden:- das Gießen eines radiologischen Schutzmaterials in eines der beiden Wärmeleitungselemente (20a), die dazu ausgelegt sind, den Hohlraum (50) zu definieren, in dem der Block (22) aufgenommen werden soll, wobei beim Gießen dieses Wärmeleitungselement (20a) an der Verpackung angeordnet ist;- das Anordnen des Anderen der zwei Wärmeleitungselemente (20b) an der Verpackung.
- Verfahren nach Anspruch 9, dadurch gekennzeichnet, dass die Hohlräume (50) nacheinander, vorzugsweise einzeln mit der horizontal orientierten Verpackung und durch Einführen des radiologischen Schutzmaterials von oben gefüllt werden.
- Verfahren nach Anspruch 10, dadurch gekennzeichnet, dass für wenigstens einen der radiologischen Schutzblöcke (22) das Gießen des radiologischen Schutzmaterials direkt in das eine der beiden Wärmeleitungselemente (20a) erfolgt, die dazu ausgelegt sind, den Hohlraum zu definieren, in dem der Block aufgenommen werden soll.
- Verfahren nach Anspruch 10, dadurch gekennzeichnet, dass für wenigstens einen der radiologischen Schutzblöcke (22) das Gießen des radiologischen Schutzmaterials durch wenigstens eine Öffnung (70) erfolgt, die an einem Werkzeug (72) vorgesehen ist, das über dem einen der zwei Wärmeleitungselemente (20a) montiert ist, die dazu ausgelegt sind, den Hohlraum (50) zu definieren, in dem der Block (22) aufgenommen werden soll, wobei das andere der beiden Wärmeleitungselemente (20b) nach dem Zurückziehen des Werkzeugs (72) an der Verpackung angeordnet wird.
- Verfahren nach Anspruch 10, dadurch gekennzeichnet, dass für wenigstens einen der radiologischen Schutzblöcke (22) das Gießen des radiologischen Schutzmaterials durch wenigstens eine Öffnung (70) erfolgt, die an dem Zwischenteil (32) des anderen der beiden Wärmeleitungselemente (20b) vorgesehen ist, das provisorisch über dem einen der beiden Wärmeleitungselemente (20a) montiert wird, die dazu ausgelegt sind, den Hohlraum (50) zu definieren, in dem der Block (22) aufgenommen werden soll, wobei dieses andere der beiden Wärmeleitungselemente (20b) anschließend zurückgezogen und dann endgültig wieder an der Verpackung angeordnet wird.
- Verfahren nach einem der Ansprüche 8 bis 13, dadurch gekennzeichnet, dass das paarweise Verschweißen der Verbindungszonen (36) durchgeführt wird, nachdem alle radiologischen Schutzblöcke (22) der Verpackung in ihren zugeordneten Hohlraum (50) gegossen wurden.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1153329A FR2974228B1 (fr) | 2011-04-18 | 2011-04-18 | Element de conduction thermique permettant d'ameliorer la fabrication d'un emballage de transport et/ou d'entreposage de matieres radioactives |
PCT/EP2012/055776 WO2012143224A1 (fr) | 2011-04-18 | 2012-03-30 | Element de conduction thermique permettant d'ameliorer la fabrication d'un emballage de transport et/ou d'entreposage de matieres radioactives |
Publications (2)
Publication Number | Publication Date |
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EP2700077A1 EP2700077A1 (de) | 2014-02-26 |
EP2700077B1 true EP2700077B1 (de) | 2015-10-07 |
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EP12711181.3A Active EP2700077B1 (de) | 2011-04-18 | 2012-03-30 | Wärmeleitfähiges Element zur verbesserten Herstellung von Verpackungen zum Transport und/oder zur Lagerung von radioaktivem Material |
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US (1) | US9040946B2 (de) |
EP (1) | EP2700077B1 (de) |
JP (1) | JP6018175B2 (de) |
KR (1) | KR101996318B1 (de) |
CN (1) | CN103460300B (de) |
ES (1) | ES2557564T3 (de) |
FR (1) | FR2974228B1 (de) |
WO (1) | WO2012143224A1 (de) |
Families Citing this family (4)
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FR3020173B1 (fr) * | 2014-04-22 | 2019-06-21 | Tn International | Emballage pour le transport et/ou l'entreposage de matieres radioactives, comprenant un amortisseur d'angle a efficacite renforcee |
JP6532753B2 (ja) * | 2015-05-21 | 2019-06-19 | 株式会社神戸製鋼所 | 放射性物質収納容器の製造方法 |
FR3042635B1 (fr) | 2015-10-16 | 2017-12-15 | Tn Int | Element de refroidissement avec embase pour evacuer de la chaleur d'un emballage |
FR3080705B1 (fr) * | 2018-04-27 | 2020-10-30 | Tn Int | Emballage de transport et/ou d'entreposage de matieres radioactives permettant une fabrication facilitee ainsi qu'une amelioration de la conduction thermique |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
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US4456827A (en) * | 1980-07-11 | 1984-06-26 | Transnuklear Gmbh | Transportation and/or storage containers for radioactive material |
FR2521764A1 (fr) * | 1982-02-12 | 1983-08-19 | Creusot Loire | Dispositif de protection neutronique pour produit radio-actif |
DE3207312A1 (de) * | 1982-03-01 | 1983-09-08 | Bernhard Dipl.-Ing. 4300 Essen Leidinger | Geschlossenes behaeltnis zur aufnahme radioaktiver stoffe |
US4590383A (en) * | 1984-10-22 | 1986-05-20 | Westinghouse Electric Corp. | Spent fuel storage cask having improved fins |
US4896046A (en) * | 1988-05-24 | 1990-01-23 | Westinghouse Electric Corp. | Fuel rod shipping cask having peripheral fins |
SE509491C2 (sv) * | 1995-01-10 | 1999-02-01 | Hydro Betong Ab | Sätt och anordning för lagring av riskavfall |
FR2791805B1 (fr) * | 1999-03-30 | 2001-08-03 | Commissariat Energie Atomique | Installation d'entreposage de tres longue duree de produits calorifiques tels que des dechets nucleaires |
JP3416657B2 (ja) * | 2001-01-25 | 2003-06-16 | 三菱重工業株式会社 | キャスクおよびキャスクの製造方法 |
JP2002267791A (ja) * | 2001-03-08 | 2002-09-18 | Toshiba Corp | 使用済燃料保管キャスク |
JP2003344581A (ja) * | 2002-05-31 | 2003-12-03 | Hitachi Ltd | 使用済燃料用キャスク及びその製造方法 |
JP3978210B2 (ja) * | 2002-07-23 | 2007-09-19 | 三菱重工業株式会社 | キャスク |
JP2007205931A (ja) * | 2006-02-02 | 2007-08-16 | Hitachi Ltd | 放射性物質用金属キャスク |
US7973298B2 (en) * | 2007-10-10 | 2011-07-05 | Kobe Steel, Ltd. | Transport/storage cask for radioactive material |
JP5010491B2 (ja) * | 2008-01-30 | 2012-08-29 | 三菱重工業株式会社 | リサイクル燃料集合体収納用バスケット及びリサイクル燃料集合体収納容器、並びにリサイクル燃料集合体収納用バスケットの製造方法 |
US9672948B2 (en) * | 2009-04-28 | 2017-06-06 | Holtec International, Inc. | Cask apparatus, system and method for transporting and/or storing high level waste |
-
2011
- 2011-04-18 FR FR1153329A patent/FR2974228B1/fr active Active
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2012
- 2012-03-30 CN CN201280017741.XA patent/CN103460300B/zh active Active
- 2012-03-30 KR KR1020137025083A patent/KR101996318B1/ko active IP Right Grant
- 2012-03-30 US US14/111,598 patent/US9040946B2/en active Active
- 2012-03-30 JP JP2014505565A patent/JP6018175B2/ja active Active
- 2012-03-30 EP EP12711181.3A patent/EP2700077B1/de active Active
- 2012-03-30 ES ES12711181.3T patent/ES2557564T3/es active Active
- 2012-03-30 WO PCT/EP2012/055776 patent/WO2012143224A1/fr active Application Filing
Also Published As
Publication number | Publication date |
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CN103460300B (zh) | 2016-01-20 |
KR101996318B1 (ko) | 2019-07-04 |
FR2974228A1 (fr) | 2012-10-19 |
JP2014515830A (ja) | 2014-07-03 |
WO2012143224A1 (fr) | 2012-10-26 |
KR20140007921A (ko) | 2014-01-20 |
ES2557564T3 (es) | 2016-01-27 |
US9040946B2 (en) | 2015-05-26 |
EP2700077A1 (de) | 2014-02-26 |
JP6018175B2 (ja) | 2016-11-02 |
FR2974228B1 (fr) | 2013-06-07 |
US20140035196A1 (en) | 2014-02-06 |
CN103460300A (zh) | 2013-12-18 |
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