EP1897094A1 - Dispositif de controle du positionnement d'un ensemble renfermant du combustible nucleaire dans un logement d'un panier de rangement - Google Patents
Dispositif de controle du positionnement d'un ensemble renfermant du combustible nucleaire dans un logement d'un panier de rangementInfo
- Publication number
- EP1897094A1 EP1897094A1 EP06777515A EP06777515A EP1897094A1 EP 1897094 A1 EP1897094 A1 EP 1897094A1 EP 06777515 A EP06777515 A EP 06777515A EP 06777515 A EP06777515 A EP 06777515A EP 1897094 A1 EP1897094 A1 EP 1897094A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- positioning
- assembly
- housing
- control device
- indicator
- 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.)
- Granted
Links
- 239000003758 nuclear fuel Substances 0.000 title claims abstract description 22
- 238000003860 storage Methods 0.000 title claims abstract description 15
- 238000000429 assembly Methods 0.000 claims description 16
- 230000000712 assembly Effects 0.000 claims description 16
- 230000014759 maintenance of location Effects 0.000 claims description 3
- 238000012806 monitoring device Methods 0.000 abstract 1
- 230000000903 blocking effect Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 11
- 239000000446 fuel Substances 0.000 description 8
- 238000007747 plating Methods 0.000 description 8
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 230000036961 partial effect Effects 0.000 description 6
- 230000000670 limiting effect Effects 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 4
- 238000000605 extraction Methods 0.000 description 3
- 230000000284 resting effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- G21F5/14—Devices for handling containers or shipping-casks, e.g. transporting devices loading and unloading, filling of containers
-
- 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
- G21F5/012—Fuel element racks in the containers
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S116/00—Signals and indicators
- Y10S116/01—Combined with diverse elements
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S40/00—Card, picture, or sign exhibiting
- Y10S40/914—Nuclear fuel element identification
Definitions
- the present invention relates generally to a device for controlling the positioning of an assembly containing nuclear fuel, in a housing of a storage basket.
- the invention also relates to a locking system of an assembly containing nuclear fuel in a housing of a storage basket, the system ensuring an axial and lateral retention of the assembly in the housing, and being equipped with such a control device.
- the packs used are arranged lying down, that is to say positioned horizontally, so that the nuclear fuel assemblies arranged inside the housing of the baskets rest by gravity on the side wall of their respective housings. More precisely, in the case where the assemblies are nuclear fuel assemblies of rectangular parallelepipedal shape, two adjacent lateral surfaces of each assembly are respectively supported on two surfaces of the lateral wall of the housing concerned. This particular provision is essentially adopted in order to maintain the integrity of the fuel during transport.
- the object of the invention is therefore to propose a device for controlling the positioning of an assembly containing nuclear fuel in a housing of a storage basket, as well as a system for blocking an assembly integrating such a control device. , so as to at least partially overcome the disadvantages mentioned above relating to the embodiments of the prior art.
- the object of the invention is a device for controlling the positioning of an assembly containing nuclear fuel in a housing of a storage basket, comprising at least one mobile stop member and a positioning indicator suitable for to be held in abutment by the movable abutment member in a first position indicating that the assembly occupies a first positioning, this movable abutment member being arranged so as to be brought into contact with the assembly situated in a second position; positioning within its housing, in a position to release the positioning indicator adapted to move automatically from the first position to a second position indicating that the set occupies the second position.
- this control device of simple and clever design makes it possible to inform the operator quickly and unambiguously about the position of the assembly within its housing, without that it is necessary to have visual or manual access inside the same dwelling.
- the positioning indicator can easily be reported outside the housing concerned, such as on the storage basket, or even more preferably on the locking system equipping the upper part of this housing. This indicator is then produced so as to generate clear information for the operator, such as all-or-nothing information.
- the device is designed so that said first positioning of the assembly corresponds to a positioning prohibiting transport and so that the first position of the indicator corresponds to a position indicating position prohibiting the transport, and designed so that the second positioning of the assembly corresponds to a positioning allowing transport and so that the second position of the indicator corresponds to a position indicating position allowing transport.
- control device generally makes it possible to indicate to the operator, following the loading of the assembly into its housing and after the tightening of the blocking system, whether or not this assembly occupies a good position within its housing, that is to say a satisfactory position for safe subsequent transport of the packaging.
- the positioning allowing transport is obtained when the assembly has established all the required contacts with the housing and the locking system, when such a system has been provided.
- the positioning indicator is furthermore capable of being held in abutment by at least one movable abutment member in the position of positioning position allowing transport, this movable abutment member being arranged in such a way as to be able to being brought into contact with the assembly located in a position allowing it to be unloaded from the housing, in a position enabling it to release the indicator designed to move automatically from the position indicating position allowing the transport to a position d positioning indication allowing the unloading of the assembly.
- the indicator is held abutting in the position indicating position allowing transport by a single movable stop member, preferably one of those already used to maintain this indicator in the position indicating position prohibiting transport.
- control device can be designed so that the first positioning of the assembly corresponds to a positioning prohibiting the unloading of the assembly and so that the first position of the indicator corresponds to a position indicating position. prohibiting the unloading of the assembly, and designed so that the second positioning of the assembly corresponds to a positioning allowing its unloading of the housing and so that the second position of the indicator corresponds to a position indicating position allowing the unloading of the whole.
- the device is not intended to provide information on the positioning of the assembly before the transport of the package, but generally only designed to control the redeposition of the assembly at the bottom of the housing after loosening the system blocking, we can therefore provide control only the axial positioning of the assembly with this device, for example using a single movable abutment member, such as an axial pusher.
- a single movable abutment member such as an axial pusher.
- the device comprises a plurality of movable abutment members, each adapted to abut the positioning indicator in the first position.
- at least one of these organs is able to hold the indicator in at least one other position among those indicated above.
- the device then comprises a first movable abutment member arranged to move in translation in a first direction, this first member then preferably taking the form of a pusher provided with a groove cooperating with a groove formed in the positioning indicator .
- the device further comprises a second mobile stop member and a third mobile stop member. respectively arranged to pivot about a second direction and a third direction, the first, second and third directions being orthogonal to each other.
- the three proposed members make it possible to control the positioning of three orthogonal surfaces of the assembly, by contact with them, this solution being of course sought in order to control the positioning of rectangular parallelepiped-shaped assemblies, such as that observed on nuclear fuel assemblies and pencil boxes.
- the invention also applies to the control of the overall positioning having a different shape, the number and the design of the movable abutment members then being chosen as a function of the number and the arrangement of the surfaces of the assembly to be controlled. .
- the first, second and third movable abutment members are equipped with elastic return means, which preferably all have the tendency to return their associated movable member to a position where the latter constitutes a stop for the indicator.
- the control device no longer integrates the second and third aforementioned members, but includes a fourth movable stop member arranged to move in translation in the first direction, this fourth movable member. stop having a frustoconical contact end with an axis parallel to the first direction.
- this frustoconical contact end makes it possible to control the positioning of two surfaces of the orthogonal assembly with each other and parallel to the first direction, whereas the first member makes it possible to control the positioning of a third surface of this set, orthogonal to the other two.
- the second preferred embodiment, in which the fourth movable abutment member is equipped with elastic return means, is therefore also especially well suited for controlling the positioning of rectangular parallelepiped-shaped assemblies, but could naturally find an application for assemblies. having other forms.
- the positioning indicator takes the form of a flap equipped with elastic return means for its automatic movement from the first position to the second position.
- the invention also relates to a locking system of an assembly containing nuclear fuel in a housing of a storage basket, this system providing axial and lateral retention of the assembly in its housing, and being equipped a control device such as that described above and also object of the present invention.
- the lateral support is preferably performed by plating at least two surfaces of the assembly against the associated housing, and preferably two orthogonal surfaces between them.
- FIG. 1 represents a schematic and partial sectional view of a housing of a storage basket in which a nuclear fuel assembly is located, the housing being equipped with a locking system according to the present invention, shown in a clamping configuration in which it blocks the assembly within its housing;
- FIG. 2 shows a sectional view taken along the line II-II of Figure 1;
- FIG. 3 represents a partial perspective view of the locking system, which comprises a device for controlling the positioning of the fuel assembly in its housing according to a first preferred embodiment of the present invention, this control device being in a configuration in which the positioning of the assembly within its housing is such that transport is prohibited;
- FIG. 4a shows a partial sectional view showing more specifically the first movable abutment member of the device shown in Figure 3;
- FIG. 4b shows a view similar to that of FIG. 4a, in a configuration in FIG. which the axial positioning of the assembly within its housing is satisfactory;
- FIG. 5a shows a partial sectional view showing more specifically the second movable abutment member of the device shown in Figure 3;
- FIG. 5b shows a view similar to that of FIG. 5a, in a configuration in which the lateral positioning of the assembly within its housing is satisfactory;
- FIG. 6 represents a view similar to that shown in FIG. 3, the control device being in a configuration encountered during the automatic movement of its positioning indicator between the position indicating position prohibiting the transport, and the position positioning indication allowing transport r
- FIG. 7 represents a view similar to that shown in FIG. 3, the control device being in a configuration in which the positioning of the assembly within its housing is such that transport is authorized;
- FIG. 8 represents a view from above of FIG. 7;
- FIG. 9 represents a view similar to that shown in FIG. 3, the control device being in a configuration in which the positioning of the assembly within its housing is such that its unloading is authorized;
- FIG. 10 represents a partial perspective view of the locking system, which comprises a device for controlling the positioning of the fuel assembly in its housing according to a second preferred embodiment of the present invention, this control device being in a configuration in which the positioning of the assembly within its housing is such that transport is prohibited;
- - Figure 11a shows a partial sectional view of the control device shown in Figure 10;
- FIG. 11b shows a view similar to that of FIG. 11a, in a configuration in which the axial positioning of the assembly within its housing is satisfactory;
- FIG. 11c shows a view similar to that of FIG. 11b, in a configuration in which the lateral positioning of the assembly within its housing is satisfactory;
- FIG. 12 shows a view similar to that shown in Figure 10, the control device being in a configuration in which the positioning of the assembly within its housing is such that transport is allowed.
- housing 1 of a storage basket 2 which is located a nuclear fuel assembly 4.
- one or more housing 1 can be arranged in the basket 2 intended to be arranged in a package (not shown), without departing from the scope of the invention.
- Each housing 1 is sized to receive a single assembly 4.
- the internal dimensions of the housing 1 are slightly greater than those of the assembly 4, as is clearly visible in FIG. 1.
- the fuel assemblies 4 and the housing 1 usually have polygonal complementary sections, most often square as schematically illustrates FIG.
- the housing 1 is equipped at its upper open part with a locking system 6 according to the present invention, shown only schematically and in a clamping configuration in which it blocks the assembly 4 within its housing 1, which has previously introduced in the latter.
- the tightening effected by means of the system 6 makes it possible to secure the assembly 4 in the axial direction 8 of the housing 1, by surface contact, preferably plane, between an upper end piece 11 of the assembly and this same locking system, and more preferably between a horizontal upper surface 9 of the upper nozzle 11 and the locking system.
- the clamping operation has the effect of taking off the bottom nozzle 10 of the assembly of the bottom 12 of the housing 1, as can be seen in FIG. 1, which allows the expansion differential between the two elements.
- the clamping operating at the upper end 11 of the assembly 4 also has the effect of causing the plating of two side faces.
- this blocking qualified lateral blocking
- this blocking is jointly provided during the transportation of assemblies 4 by the specific position of the package, said lying or horizontal.
- the axial direction 8 of the housing 1 is then parallel to the ground, and the edge 18 joining the two orthogonal lateral surfaces 16a, 16b corresponds to the lowest part of the housing 1, so that these two surfaces 16a, 16b together form an open V upwards. Therefore, the two surfaces 14a, 14b of the assembly 4 tend, under the effect of gravity, respectively to bear against the surfaces 16a, 16b during transport.
- the packaging is generally oriented so that the longitudinal axis 19 of each housing 1, parallel to the direction 8, is substantially vertical.
- the design of the locking system 6, and more specifically that of its means allowing to ensure the three blockages indicated above, corresponds to a design known to those skilled in the art, and therefore will not be further described.
- this locking system 6 intended to minimize the displacements of the assembly 4 during transport can take any of the forms described in the document FR-A-2 833 401, which is incorporated here by reference.
- the system mainly comprises a fixing device designed to achieve a rigid connection between the upper end of the assembly, and the open end of the housing.
- this system 6 lies in the fact that it incorporates a device for controlling the positioning of the assembly in the housing concerned.
- this device 20 is preferably located at a system angle 6 of substantially square section (the end of the angle at which the device 20 is located has been deliberately omitted for the sake of clarity).
- the closure flange serves as mounting support for the control device 20.
- the device 20 is represented in a configuration in which the positioning of the assembly 4 within its housing 1 is such that the transport is prohibited, this state being encountered especially when the assembly 4 has just been loaded in the housing 1 but that the tightening of the locking system 6 has not been operated, or when the tightening has been achieved but that the assembly 4 occupies, due to any anomaly, a final position different from the one required. Moreover, this state can also be met before the loading of the assembly 4 in the housing 1.
- FIG. 3 partially shows the assembly 4 in a position corresponding to that occupied directly after the loading thereof and before the tightening of the system 6, in which position it rests at the bottom of the housing 1.
- the control device 20 is preferably designed to control the axial positioning of the assembly, and its lateral positioning in two distinct directions, which are here orthogonal due to the orthogonality between the two lateral surfaces 14a, 14b whose contact with the wall of the housing 1 is to be controlled.
- This positioning indicator 30 may be made in any way known to those skilled in the art, by combining it with a marking made on a support of the indicator which is here the plate 22, this marking may for example take the form of a graduation, a color code, and more generally any form allowing the operator to visually determine the position of the indicator, and therefore that of the assembly within the housing.
- the indicator takes the form of a flap 30 attached externally hingedly to the main plate 22 serving as a support, along a pivot 31 parallel to the axial direction 8.
- first zone 34 of a marking In this positioning position prohibiting the transport, its angular position relative to the plate 22 is such that it discovers a first zone 34 of a marking, this zone 34 being formed on the upper surface of this plate 22 and made to indicate clearly and accurately to the operator that the assembly 4 is poorly positioned in the housing 1 to which it no longer has visual access.
- This first zone 34 may for example be of a particular color, belonging to a color code known to the operator. More particularly with reference to FIG. 4a showing the first movable thrust member 24, we can see that it takes the form of a pusher oriented in the direction 8 and a lower end 38 is close to the tip of square section 11 of the assembly resting in the bottom of the housing 1.
- the locking system 6 has only been put in place on the upper part of the housing 1 with which it is in contact, but it has not yet been tightened. This is the reason why the assembly 4 occupies an axial positioning prohibiting the transport, which results in the absence of contact between the upper surface 9 of the nozzle 11 and a lower horizontal surface 36 of the plate 22, these two surfaces 9, 36 then being oriented perpendicular to the direction 8.
- the axial pusher 24 is therefore in its lowest position provided by elastic return means preferably taking the form of a compression spring 40 interposed between the plate 22 and the lower end 38, and by a shoulder 42. limiting the stroke of this pusher 24 downwards by its support against a seat 44 formed in an upper portion of the plate 22. In this position, the lower end 38 and the upper surface 9 are preferably spaced apart from one set 46.
- an upper end 50 of this pusher 24 is housed in a through orifice 52 of the flap 30, the orifice 52 and the end 50 having a substantially identical diameter. It is therefore the abutment between these two elements
- the flap 30 would be rotated about the axis 60 of the pivot 31 by means of elastic return means preferably taking the shape of a torsion spring 54 arranged around the pivot 31, itself passing through the flap 30 and being arranged in the direction 8.
- the spring 54 has a lower end secured to the plate 22 and a upper end secured to the flap 30.
- This groove 56 is substantially identical to the width of a groove 58 (visible in FIG. 3) taking the form of a circular arc centered on the axis 60 of the pivot 31, and opening into the orifice 52 supra.
- a groove 58 visible in FIG. 3
- the pusher 24 no longer holds the shutter 30 in abutment, since a pivoting thereof along the axis 60 would have the effect of causing engagement of the circular groove 58 in the groove 56, then relative sliding between these two elements 56, 58.
- FIG. 5a showing the second movable abutment member 26, it can be seen that it takes the form of an arm arranged hingeably about a pivot 64 extending in a second direction 62 orthogonal in the direction 8, this direction 62 also being parallel to the surface 16a of the housing 1.
- the locking system 6 has only been put in place on the upper part of the housing 1 with which it is in contact, but has not yet been tightened. This is the reason why the assembly 4 occupies a lateral positioning prohibiting the transport, which results in the absence of contact between the lateral surface 14a of the assembly and the lateral surface 16a of the housing.
- the arm 26 is therefore in a position where its lower end projects more protruding inside the housing 1, through the surface 16a, this position being maintained by default by by means of elastic return means such as a torsion spring 68 shown only schematically and being arranged around the pivot 64, so in the second direction 62.
- the spring 68 has an end secured to the arm 26, and at another end secured to the plate 22.
- the spring 68 has the effect of keeping the arm 26 in an abutment position for the flap 30. In this state maintained by the abutment between the surface 36 of the plate 22 and the lower end 66 of the arm 26, the arm 26 thus rests in a substantially tilted position in which it deviates from the housing upwardly.
- an upper end 72 of this arm 26, also called abutment end, is housed in a straight groove 74 of the flap 30, this groove 74 opening radially outwardly of this flap 30 and being formed on a surface bottom of it.
- the groove 74 is made in the same plane as the plane of movement of the arm 26, that is to say in a plane parallel to the direction 8 and orthogonal to the direction 62.
- it is therefore the abutment between these two elements 72, 74 which keeps the flap 30 in the positioning position prohibiting the transport shown in Figure 3. Indeed, without this stop, the flap 30 would be rotated around the 60 axis of the pivot 31 through the torsion spring 54 already described.
- the arm 26 no longer retains the shutter 30 in abutment, since a pivoting thereof along the axis 60 would have the consequence to generate a relative displacement between the free space 78 and the end 72 located therein.
- the design of the third movable abutment member 28 is identical to that of the second just described, and it will therefore not be more detailed.
- This third member 28 is, however, provided to control the contact between the surfaces 14b and 16b, and its pivoting arm is thus arranged to be able to be rotated in a third direction 79 orthogonal to the first and second directions 8 and 62. It is noted that when the contact is established between these two lateral surfaces 14b, 16b, the upper end of the arm 28 also integrates the free space 78 after having been extracted from its associated groove.
- the three movable abutment members 24, 26, 28 are normally simultaneously positioned in the states respectively shown in Figures 4b and 5b in which they no longer hold the flap 30 abutting, order to obtain these three satisfactory states can be any. From this moment only, the free flap 30 is only subjected to the action of the torsion spring 54 which causes a pivoting of the latter around the axis 60, during which the groove 56 therefore slides in the circular groove 58 as shown in Figure 6.
- FIGS. 7 and 8 showing the control device 20 in a configuration in which the positioning the assembly within its housing is such that transport is allowed, it can be seen that the flap 30 has been moved automatically under the effect of the spring 54 is stopped in a precise angular position by a stop between the upper end 50 of the pusher 24, and a tongue 80 situated above the through groove 58, on the upper surface of the flap 30. More specifically, this tongue 80 is arranged above an outlet section 82 of the groove 58, this section 82 being opposite the end of the groove opening into the orifice 52, and having a width greater than that of the remainder of this groove.
- the angular position of the flap 30 relative to the plate 22 is such that it covers the first zone 34 of the marking, which clearly and accurately indicates to the operator that the assembly 4 is correctly positioned in the housing 1 to which it no longer has visual access.
- marking it has in fact been provided that during the occupation by the flap 30 of the position indicating position allowing transport, no area of this marking is apparent.
- the device 20 is also designed, in this first preferred embodiment, so that the flap 30 can occupy a third position qualified positioning position position allowing the unloading of the assembly.
- the operator can then be informed, before the unloading of the assembly 4 and after loosening of the locking system 6, whether or not this assembly occupies a position allowing non-risky extraction of the locking system 6. It can then preferably be provided that the positioning authorizing the unloading of the assembly is obtained when the assembly 4 has been redeposited in the bottom of the housing or brought close to it, following the loosening of the locking system 6.
- the angular position of the flap 30 relative to the plate 22 is such it discovers a second zone 84 of the marking and that it continues to cover the first zone 34, this second zone 84 being also practiced on the upper surface of this plate 22 and made to indicate clearly and accurately to the operator that the assembly 4 is well positioned in the bottom of the housing 1 or near the latter.
- This second zone 84 preferably takes on a color different from that of the first zone 34.
- this third position is then retained by abutment between the flap 30 and a pin 86 provided on the upper surface of the flap 30.
- the automatic transition between the second and third position of the flap 30 is preferentially not at the end of loosening, but just before the end of this loosening. 6. Consequently, after the aforementioned passage of the flap 30 of the second to the third position, the operator must complete the loosening to finish depositing the assembly in the bottom of the housing 1, the lowering generated n However, it is very small and substantially corresponds to the clearance 46 shown in FIG. 4a. Once these operations have been completed, the operator can then remove the locking system 6 and extract the assembly 4 from its housing 1. In addition, the control device 20 can then be rearmed manually for future transport of assembly in the housing concerned.
- control device 20 according to a second preferred embodiment of the invention, this device equipping the locking system 6 also object of the present invention. It is noted that this embodiment has similarities with the previous one, and that the elements bearing the same numerical references in the figures correspond to identical or similar elements.
- this device will be described as being able only to detect two distinct positioning of the assembly within its housing, namely that prohibiting the transport and that authorizing the transport of this assembly. Nevertheless, it is obvious that it could be adapted by those skilled in the art, in view of the first preferred embodiment described above, to also detect a third positioning corresponding to the positioning allowing the unloading of one assembly.
- this second embodiment differs from the first in that the two lateral arms 26 and 28 are replaced by a fourth movable stop member in the form of a pusher adapted for check the lateral positioning of the assembly in the housing.
- this device 20 is also located at the periphery of the system 6 of substantially circular section and incorporating a main plate 22 for closing the open end of the housing.
- control device 20 is preferably designed to control the axial positioning of the assembly, as well as its lateral positioning in a plane orthogonal to the axial direction 8.
- the lateral positioning control performed comparable to a lateral control in two directions, for example orthogonal to each other as was the case in the first preferred embodiment, is obviously associated with the two side surfaces 14a, 14b of the assembly 4 whose contact with the housing wall is to be controlled. Therefore, this device 20 is very well adapted to control the contact of three orthogonal surfaces of the assembly 4, respectively with the clamping system 6 and the side wall of the housing.
- first movable abutment member 124 and a fourth movable abutment member 90 which, when the assembly 4 occupies a position prohibiting transport within its housing, retain by stop the flap 30 in the position of positioning position prohibiting the transport, this flap 30 being here also articulated about the axis pivot pin 60 parallel to the direction 8.
- the angular position of the flap 30 relative to the plate 22 is such that it discovers the first zone 34 of the marking made to indicate clearly and accurately to the operator that the assembly 4 is incorrectly positioned in the accommodation.
- the axial pusher 124 is thus in its lowest position provided by elastic return means preferably taking the form of a compression spring 140 interposed between a hollow body 92 of the device 20 and the lower end 138, the elements 124, 140 and 92 being concentric.
- the lowest position is maintained thanks to a stop between a shoulder 142 of the pusher 124, which can be formed by a ring, and an upper end 94 of the hollow body 92 secured to the plate 22, this stop limiting effectively the stroke of the pusher 124 down.
- the lower end 138 and the upper surface 9 are spaced apart by a clearance 46.
- an upper end 150 of this pusher 124 is housed in a through orifice 52 of the flap 30, the orifice 52 and the end 150 having a substantially identical diameter.
- FIG. 11b showing the device 20 in a configuration in which the axial positioning of the assembly 4 within its housing 1 is satisfactory, it can indeed be seen that this assembly has been sufficiently tightened by the locking system. 6 to cause a plating of the surface 9 of the upper nozzle 11 against the lower surface 36 of the plate 22.
- the upward movement of the assembly 4 in the housing 1 has the effect of bringing into contact the surface 9 and the lower end 138 of the pusher 124. Therefore, the tip 11 exerts an action on the pusher 124 which then moves upwardly compressing the spring 140, until the surfaces 9 and 36 abut, as shown in Figure 11b.
- the pusher 124 has been moved sufficiently upwards so that its end 150 is entirely extracted from the orifice 52, which is now facing a groove 156 of this same pusher, and located below the end 150.
- the diameter of this groove 156 is substantially identical to the width of the groove 58 (visible in FIG. 10) taking the form of a circular arc centered on the axis 60 of the pivot 31, and opening into the orifice 52 mentioned above.
- the pusher 124 no longer retains the shutter 30 in abutment, since a pivoting thereof along the axis 60 would have the consequence of causing engagement of the circular groove 58 in the groove 156, then a relative sliding between these two elements 156, 58.
- the assembly 4 occupies a lateral positioning prohibiting the transport, which results in the absence of contact between the lateral surface 14a of the assembly and the surface 16a side of the housing, and between the side surface 14b of the assembly and the side surface 16b of the same housing (the surfaces 14b and 16b are not visible in this figure 11a).
- the pusher 90 is then in its lowest position provided by elastic return means preferably taking the form of a compression spring 102 interposed between the hollow body 92 and a spacer 104 bearing against an upper portion of a rod 106 orthogonally crossing the pusher 90.
- elastic return means preferably taking the form of a compression spring 102 interposed between the hollow body 92 and a spacer 104 bearing against an upper portion of a rod 106 orthogonally crossing the pusher 90.
- the lowest position is maintained thanks to a stop between the two ends of this rod 106 and the bottom of two lights 110 made in faces side of the hollow body 92, this stop thus limiting the stroke of the pusher 90 downwards.
- the lower end 96 and the upper surface 9 are for example in contact with each other, or very close together, which implies that the end 96 projects slightly from the end 138 towards the low.
- an upper end 112 of this pusher 90 projects upwards from the upper end 150 of the pusher 124.
- FIG. 11b showing the device 20 in a configuration in which the axial positioning of the assembly within its housing is satisfactory but in which the lateral positioning of the assembly within its housing is such that the transport is still prohibited, it can be seen that the reassembly of the assembly 4 in the housing 1 has not only caused an upward movement of the pusher 124, but also an upward displacement of the concentric pusher 90, because of the contact of the end 96 with the endpiece 11.
- the ends 96 and 138 are located at the same transverse plane and horizontal.
- this pusher 90 has penetrated into a through orifice 113 of a plate 114 mounted integrally above the flap 30, the orifice 113 and the end 112 having a substantially identical diameter.
- This plate 114 has at its level lower surface a recess 116 for housing the end 150 fully extracted from the orifice 52.
- FIG. 11c showing the device 20 in a configuration in which the lateral and axial positioning of the assembly 4 within its housing 1 are both satisfactory, it can indeed be seen that this assembly has been sufficiently tight.
- the blocking system 6 to generate a plating of the side surface 14a of the assembly 4 against the side surface 16a of the housing 1, and a plating of the side surface 14b of the assembly 4 against the side surface 16b of this same dwelling 1
- this means and the shape of the end 96 are selected in any way, the only condition being that they make it possible to control the lateral positioning of the assembly in a plane orthogonal to the axis 100 parallel to the direction 8, that is to say in two distinct directions orthogonal to this same direction 8.
- the end 112 has been moved enough downwards to be entirely extracted from the orifice 113.
- the upper end 112 is now housed in the end 150 of the pusher 124, and therefore arranged in the recess 116 of the plate 114.
- the pusher 90 no longer retains the flap 30 in abutment.
- the angular position of the flap 30 with respect to the plate 22 is such that it covers the first zone 34 of the marking while discovering another zone 119, the latter being also practiced on the upper surface of this plate 22 and made so as to indicate clearly and accurately to the operator that the assembly 4 is correctly positioned in the housing 1.
- This zone 119 is preferably of course a color different from that of the first zone 34.
- control device can not only be integrated with a locking system intended to equip a given housing of the storage basket, but could alternatively be mounted directly on the latter.
- the two preferred embodiments presented above are designed in such a way that they make it possible to indicate to an operator that the assembly is either in a positioning prohibiting the transport (after the loading the assembly, and translating unsatisfactory contact (s)), either in a position allowing transport (after tightening the locking device, and translating satisfactory contacts), or possibly in a position allowing its unloading (after the transport and loosening of the locking system, and reflecting the deposit of the assembly in the bottom of the housing), the invention also applies to devices designed to only indicate a positioning prohibiting unloading and a positioning allowing the unloading the assembly.
- the design device similar to one of those presented above is made so that the passage of the entire positioning prohibiting the unloading positioning allowing unloading is identical to the previously described passage positioning allowing transportation the positioning authorizing unloading, since in both cases, the assembly passes from a state in which it is distant from the bottom of the housing to a state in which it is in contact with the same bottom or very close to it .
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Automatic Assembly (AREA)
- Control And Safety Of Cranes (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0551847A FR2888033B1 (fr) | 2005-06-30 | 2005-06-30 | Dispositif de controle du positionnement d'un ensemble renfermant du combustible nucleaire dans un logement d'un panier de rangement |
PCT/EP2006/063689 WO2007003575A1 (fr) | 2005-06-30 | 2006-06-29 | Dispositif de controle du positionnement d'un ensemble renfermant du combustible nucleaire dans un logement d'un panier de rangement |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1897094A1 true EP1897094A1 (fr) | 2008-03-12 |
EP1897094B1 EP1897094B1 (fr) | 2010-01-06 |
Family
ID=35744924
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06777515A Active EP1897094B1 (fr) | 2005-06-30 | 2006-06-29 | Dispositif de controle du positionnement d'un ensemble renfermant du combustible nucleaire dans un logement d'un panier de rangement |
Country Status (7)
Country | Link |
---|---|
US (1) | US7971364B2 (fr) |
EP (1) | EP1897094B1 (fr) |
JP (1) | JP5038302B2 (fr) |
AT (1) | ATE454702T1 (fr) |
DE (1) | DE602006011616D1 (fr) |
FR (1) | FR2888033B1 (fr) |
WO (1) | WO2007003575A1 (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7585527B2 (en) | 2005-09-19 | 2009-09-08 | Bala Venkataraman | Composition and method for treating iron deficiency anemia |
US12033764B2 (en) | 2006-09-06 | 2024-07-09 | Holtec International | Fuel rack for storing spent nuclear fuel |
CN101960534B (zh) * | 2007-10-29 | 2014-08-20 | 霍尔泰克国际股份有限公司 | 用于支持放射性燃料组件的设备 |
RU2562799C1 (ru) * | 2014-06-03 | 2015-09-10 | Федеральное государственное унитарное предприятие "Горно-химический комбинат" | Крышка для перегрузки решетки пенала и решетка |
CN105336383B (zh) * | 2015-10-23 | 2017-11-21 | 中国原子能科学研究院 | 一种破损燃料棒水下封装装置及方法 |
KR101746146B1 (ko) | 2016-04-11 | 2017-06-28 | 한국원자력연구원 | 판형 핵연료집합체를 제조하기 위한 스웨이징 공정용 스토퍼 시스템, 이를 이용한 판형 핵연료집합체의 조립방법 |
RU2634474C1 (ru) * | 2016-11-02 | 2017-10-31 | Федеральное государственное унитарное предприятие "Горно-химический комбинат" (ФГУП "ГХК") | КРЫШКА ЧЕХЛА ХРАНЕНИЯ ОТРАБОТАВШИХ ТЕПЛОВЫДЕЛЯЮЩИХ СБОРОК РЕАКТОРА ВВЭР-1000 и ШТАНГА ДЛЯ ЕЕ СНЯТИЯ И ПОСТАНОВКИ |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1816856C3 (de) * | 1968-12-24 | 1973-12-20 | Siemens Ag, 1000 Berlin U. 8000 Muenchen | Klemmbügel zur Halterung von Brennelementen in Transportbehältern |
FR2330122A1 (fr) * | 1975-10-28 | 1977-05-27 | Commissariat Energie Atomique | Dispositif de solidarisation du couvercle de fermeture et de la structure interne superieure d'un reacteur nucleaire |
US4678620A (en) * | 1984-07-23 | 1987-07-07 | Westinghouse Electric Corp. | Hatch assembly |
US5064606A (en) * | 1990-03-21 | 1991-11-12 | Gotech, Limited | Channel box removing apparatus |
FR2674667B1 (fr) * | 1991-03-25 | 1994-09-02 | Framatome Sa | Dispositif de fixation d'un objet sur une structure de transport et en particulier dispositif de verrouillage d'un assemblage combustible dans un conteneur de transport. |
JPH0862389A (ja) * | 1994-08-26 | 1996-03-08 | Mitsubishi Nuclear Fuel Co Ltd | 燃料集合体の収納容器 |
US5461647A (en) * | 1994-08-31 | 1995-10-24 | B&W Fuel Company | Drive tool for upper end fitting locking arrangement |
US6108392A (en) * | 1997-01-21 | 2000-08-22 | Kabushiki Kaisha Toshiba | Fuel assembly transport container and method of transporting a fuel assembly |
JP3069536B2 (ja) * | 1997-07-04 | 2000-07-24 | 株式会社東芝 | 原子炉燃料の輸送容器およびその輸送方法 |
JP3306000B2 (ja) * | 1998-03-12 | 2002-07-24 | 株式会社東芝 | 原子炉燃料の輸送容器およびその輸送方法 |
JPH1152092A (ja) * | 1997-08-07 | 1999-02-26 | Toshiba Corp | 原子炉燃料の輸送容器および輸送方法 |
FR2773415B1 (fr) * | 1998-01-05 | 2000-04-21 | Transnucleaire | Dispositif de calage transversal d'assemblages combustibles nucleaires a l'interieur d'emballages de transport |
JP2002098790A (ja) * | 2000-09-22 | 2002-04-05 | Hitachi Ltd | 原子炉新燃料輸送容器 |
FR2833401B1 (fr) * | 2001-12-10 | 2005-12-30 | Transnucleaire | Procede et dispositif de blocage d'un assemblage combustible nucleaire dans un logement |
-
2005
- 2005-06-30 FR FR0551847A patent/FR2888033B1/fr not_active Expired - Fee Related
-
2006
- 2006-06-29 WO PCT/EP2006/063689 patent/WO2007003575A1/fr active Application Filing
- 2006-06-29 DE DE602006011616T patent/DE602006011616D1/de active Active
- 2006-06-29 AT AT06777515T patent/ATE454702T1/de not_active IP Right Cessation
- 2006-06-29 EP EP06777515A patent/EP1897094B1/fr active Active
- 2006-06-29 JP JP2008518848A patent/JP5038302B2/ja not_active Expired - Fee Related
- 2006-06-29 US US11/922,972 patent/US7971364B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2007003575A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP1897094B1 (fr) | 2010-01-06 |
US20090172961A1 (en) | 2009-07-09 |
DE602006011616D1 (de) | 2010-02-25 |
ATE454702T1 (de) | 2010-01-15 |
FR2888033A1 (fr) | 2007-01-05 |
JP5038302B2 (ja) | 2012-10-03 |
WO2007003575A1 (fr) | 2007-01-11 |
FR2888033B1 (fr) | 2007-09-28 |
US7971364B2 (en) | 2011-07-05 |
JP2008545131A (ja) | 2008-12-11 |
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