[go: up one dir, main page]

WO2018104670A1 - Packaging for transporting and/or storing radioactive substances comprising an improved system for fluidic communication between the inside and the outside of the containment - Google Patents

Packaging for transporting and/or storing radioactive substances comprising an improved system for fluidic communication between the inside and the outside of the containment Download PDF

Info

Publication number
WO2018104670A1
WO2018104670A1 PCT/FR2017/053435 FR2017053435W WO2018104670A1 WO 2018104670 A1 WO2018104670 A1 WO 2018104670A1 FR 2017053435 W FR2017053435 W FR 2017053435W WO 2018104670 A1 WO2018104670 A1 WO 2018104670A1
Authority
WO
WIPO (PCT)
Prior art keywords
fluid
packaging
fluid outlet
communication system
channels
Prior art date
Application number
PCT/FR2017/053435
Other languages
French (fr)
Inventor
Fabien COLLIN
Original Assignee
Tn International
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tn International filed Critical Tn International
Priority to JP2019530124A priority Critical patent/JP7018445B2/en
Priority to ES17821974T priority patent/ES2853982T3/en
Priority to EP17821974.7A priority patent/EP3552215B1/en
Priority to CN201780075739.0A priority patent/CN110050309B/en
Publication of WO2018104670A1 publication Critical patent/WO2018104670A1/en

Links

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
    • G21F5/005—Containers for solid radioactive wastes, e.g. for ultimate disposal
    • 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

Definitions

  • the present invention relates to a package for transporting and / or storing radioactive material. It relates more specifically fluidic communication systems between the interior of the containment and the outside thereof, particularly when these systems are not closed.
  • the main function of transport and / or storage packages for radioactive materials is to isolate their contents from the external environment.
  • the packaging has a containment chamber in which are housed the radioactive materials.
  • This sealed enclosure is made using several packaging elements, usually a lateral body, a lid, and a bottom.
  • These packaging elements are conventionally equipped with fluidic communication systems between the inside and the outside of the enclosure. It may for example be a vent system for venting the enclosure. It can also be a drainage system for extracting the residual water from the enclosure, when the package is loaded under water. Finally, it may be a gaseous sampling system in the containment.
  • each fluid communication system can be associated with two plugs each provided with at least one seal, so as to form a double sealing barrier when the containment requires it.
  • the level of radiological protection may then be insufficient in the fluid communication systems.
  • the dose equivalent rate level may then be higher than the required criterion under operating conditions.
  • the invention therefore aims to at least partially overcome the problem mentioned above, relating to the achievements of the prior art.
  • the subject of the invention is a packaging for transporting and / or storing radioactive materials, comprising a plurality of packaging elements internally defining a confinement chamber for the radioactive materials, at least one of the elements of wherein the package is traversed by at least one fluid communication system having, at an inner surface of the enclosure, at least one fluid inlet opening and, at a fluid outlet area of the surface external of the packaging element concerned, at least one fluid outlet opening, said fluid communication system being associated with a closure plug covering said fluid outlet zone so as to close said at least one outlet opening of fluid.
  • the fluid communication system defines at least two distinct fluid flow paths between the at least one fluid inlet opening and the at least one fluid outlet opening.
  • the invention thus provides, in an original manner, a duplication of traffic paths which makes it possible to offer a satisfactory compromise between the simplicity of shape of the paths concerned, and the radiological protection conferred in the event of withdrawal of the plug. Indeed, providing no longer a single path but several paths of smaller sections, increases the capacity of the packaging element equipped with the fluidic communication system to absorb gamma radiation occurring in all directions. It is nevertheless noted that the different traffic routes can share common areas, without departing from the scope of the invention.
  • the invention also makes it possible to limit the dose rate when the stopper is in place.
  • the invention preferably has at least one of the following optional features, taken alone or in combination.
  • the fluidic communication system comprises a number greater than or equal to a NI of fluid inlet openings, and a number greater than or equal to one N2 of fluid outlet openings, the number N1 being greater, equal to or equal to less than the number N2.
  • Said closure cap is at least partially housed in a housing provided on the associated packaging element, said housing being defined by said fluid outlet zone of the outer surface of the same packaging element.
  • the plug which is then entirely projecting at the outer surface of the packaging element.
  • the cap in the assembled position, covers each fluid outlet opening, or penetrates into at least one of them.
  • the distinct paths of fluid circulation are made from several elementary channels which communicate with at least one main channel of larger section and provided in a number less than that of the elementary channels, each main channel defining a part of several of said paths. traffic of fluid.
  • each main channel opens at the level of the fluid outlet zone, and the elementary channels open into the confinement enclosure, or vice versa.
  • the package preferably comprises two elementary channels opening into the containment chamber, and a single main channel opening at the fluid outlet zone.
  • the distinct paths of fluid circulation are made from several elementary channels which each open on the one hand in the confinement enclosure and on the other hand at the fluid outlet zone, and each elementary channel defines one of said fluid flow paths.
  • Yet another possibility lies for example in having a single main inlet channel opening into the confinement enclosure and a main outlet channel opening at the fluid outlet zone, and providing a secondary channel network connecting the two main channels.
  • the elementary channels and / or the main channel (s) are straight, or non-right, preferably having at least one elbow and / or baffle.
  • the elementary channels and / or the main channel (s) of the same fluid communication system are part of the same fictitious plane.
  • the fluid communication system is preferably a drainage system, a vent system or a gas sampling system.
  • a tungsten plate may be attached to the packaging element in the vicinity of the fluid communication system. Any other high density material may also be considered to form this additional barrier to gamma radiation.
  • FIG. 1 shows a schematic longitudinal sectional view of a package for the storage and / or transport of radioactive material according to the invention
  • FIG. 2 is a cross-sectional view taken along the line of FIG. 1 showing a fluid communication system fitted to one of the packaging elements shown in FIG. 1;
  • FIG. 2a is a view similar to that of FIG. 2, with the fluidic communication system equipped with its plug. ;
  • FIG. 3 is a cross-sectional view taken along the line M INI of FIG. 2;
  • Fig. 4 is a cross-sectional view taken along the line IV-IV of Fig. 2;
  • FIG. 5 is a view similar to that of Figure 2, according to an alternative embodiment.
  • FIGS. 6a to 6d are views similar to that of FIG. 5, showing still other preferred embodiments. DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
  • FIG. 1 there is shown a schematic longitudinal sectional view of a package for the transport and / or storage of radioactive materials, such as irradiated fuel assemblies or radioactive waste 3.
  • L 1 is shown in a vertical storage position, in which its longitudinal axis 2 is oriented vertically.
  • the package 1 comprises a containment chamber 4 delimited internally by a plurality of packaging elements, among which a bottom 6, a lateral body 8 and a closure system comprising one or more lids 10.
  • the bottom 6 and the cover 10 are spaced from each other along the longitudinal axis 2, on which is centered the lateral body 8 of circular cross section or polygonal shape.
  • the package 1 also comprises a head damping hood 12 and possibly a bottom damping hood (not shown).
  • the head damping hood 12 is provided with a hollow zone 16 centered on the axis 2, this hollow zone housing at least a portion of the lid 10 and a head end 8a of the lateral body 8.
  • the lid 10 is removably attached to the lateral body 8, preferably by means of screws 22, one of which is schematically shown by its center line.
  • the lateral body 8 has at its head end 8a a fluid communication system 30 specific to the invention, which will now be described with reference to Figures 2 to 4.
  • the system 30 may be a drainage system, a vent system, or a gas sampling system. It is associated with a closure plug 32 helping to define the containment chamber 4 when it closes the system 30. This plug also forms a radiological shield to limit radiological leakage to the system 30.
  • the system 30 is provided to cooperate with a shielded draining or venting tool, which comprises a sealing system ensuring that the confinement of the radioactive materials is guaranteed during the operations performed.
  • the communication system 30 passes through here the head end 8a of the lateral body 8, which is generally formed by a metal shell 34 radially covered by a neutron protection layer 36.
  • This system 30, which takes the general shape of a network of channels, has two fluid inlet openings 38a, 38b at an inner surface 40 of the containment chamber 4.
  • This system 30 comprises at a fluid outlet zone 42 of the outer surface 44 of the lateral body, a single fluid outlet opening 39.
  • the plug 32 associated with this system 30 covers this exit zone of fluid 42, as can be seen in FIG. 2a.
  • This is also the portion of the outer surface 44 covered by the cap 32 which defines said fluid outlet zone 42 within the meaning of the invention. Still in this mounted position, the plug 32 closes the fluid outlet opening 39, covering or penetrating therein as well.
  • the fluid outlet zone 42 defines a housing 48 provided for housing at least a portion of the closure cap 32, when it occupies its mounted position.
  • the plug 32 is thus at least partially integrated into the lateral body 8, as can be seen in FIG. 2a.
  • the fluidic communication system 30 defines two distinct fluid circulation paths 46a, 46b between the inside and the outside of the containment enclosure 4. More precisely, the first path 46a begins at the first fluid inlet opening 38a from which extends a first elementary channel 48a having a bend 50, for example 90 °. Similarly, the second path 46b begins at the second fluid inlet opening 38b from which extends a second elementary channel 48b having a bend 50, also of the order of example at 90 °.
  • the two elementary channels 48a, 48b each have an upstream part and a downstream part separated by the bend 50. The two upstream parts are substantially parallel, while the two downstream parts are of coinciding axes and meet at the same level. a junction with a main channel 52 defining a downstream portion common to the two fluid flow paths 46a, 46b.
  • the main channel 52 is preferably straight, and has an axis parallel to the two axes of the upstream portions of the two elementary channels 48a, 48b.
  • the axis of the main channel 52 is arranged between the two aforementioned axes, which are distributed symmetrically with respect to this axis of the main channel.
  • the channels 48a, 48b, 52 are preferably inscribed in the same plane 54 schematized on the 4, corresponding to a transverse plane of the package, that is to say orthogonal to its axis 2. It is noted that in the case where the system 30 is implanted on the cover, the fictitious plane in which s' integrate the channels is preferably a longitudinal plane of the package, passing through its axis 2.
  • the single main channel 52 ends with the fluid outlet opening 39 opening into the housing 48 defined by the fluid outlet area 42.
  • the elementary channels 48a, 48b each have a section smaller than that of the main channel 52.
  • the sum of the sections of the two elementary channels 48a, 48b are identical or similar to the higher section of the main channel 52.
  • the channels 48a, 48b, 52 are made directly in the shell 34, or in an insert 60 reported in a housing 62 formed in this shell, at the inner surface 40 of the containment. This latter solution, shown in the figures, makes it easier to make the channels, especially when they include 90 ° bends.
  • Figure 5 shows an alternative embodiment in which the plug 32 is no longer in a housing, but is entirely projecting relative to the outer surface 44 of the lateral body.
  • the plug 32 here covers the fluid outlet zone 42 of the surface 44, and covers the outlet opening 39.
  • FIGS. 6a to 6d show other conceivable embodiments, all sharing the same inventive concept aiming at providing several fluid circulation paths associated with the same closure plug 32.
  • two elementary channels 48a, 48b are distinct from each other and respectively define two independent fluid flow paths 46a, 46b.
  • the channels are straight and inclined relative to each other, so as to form a V.
  • Each elementary channel 48a, 48b therefore extends between the inlet opening 38a, 38b and the fluid outlet opening. 39a, 39b.
  • the embodiment differs from the previous embodiment in that each elementary channel 38a, 38b additionally integrates a baffle 64.
  • the design differs from that of Figure 5 by the simple fact that the upstream portions of the elementary channels 48a, 48b are no longer parallel, but inclined relative to each other to form a V.
  • the design is inverted with respect to that of FIG. 5, by providing a main channel 52 extending from the inlet opening 38, as well as two elementary channels 48a. 48b ending respectively in two outlet openings 39a, 39b.
  • the two distinct paths 46a, 46b are merged upstream in the main channel 52, before separating by passing respectively through the two elementary channels 48a, 48b.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Packages (AREA)
  • Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)

Abstract

The invention relates to packaging for transporting and/or storing radioactive substances, comprising several packaging elements (8) together delimiting a containment (4) for the radioactive substances, at least one of the packaging elements having passing through it at least one fluidic communication system (30) having, at the level of an interior surface (40) of the containment, at least one fluid inlet opening (38a, 38b) and, at the level of a fluid outlet (42) from the exterior surface (44) of the packaging element, at least one fluid outlet opening (39), the system being associated with a closure stopper (32) covering the fluid outlet zone (42). According to the invention, the system (30) defines at least two distinct paths (46a, 46ba) for the circulation of fluid between the fluid inlet opening (38a, 38b) and the fluid outlet opening (39).

Description

EMBALLAGE DE TRANSPORT ET/OU D'ENTREPOSAGE DE MATIERES RADIOACTIVES COMPRENANT UN SYSTEME DE COMMUNICATION FLUIDIQUE AMELIORE ENTRE  TRANSPORT AND / OR STORAGE PACKAGING OF RADIOACTIVE MATERIALS COMPRISING AN IMPROVED FLUIDIC COMMUNICATION SYSTEM BETWEEN
L'INTERIEUR ET L'EXTERIEUR DE L'ENCEINTE DE CONFINEMENT  THE INTERIOR AND OUTSIDE OF THE CONFINEMENT ENCLOSURE
DESCRIPTION DESCRIPTION
DOMAINE TECHNIQUE TECHNICAL AREA
La présente invention se rapporte à un emballage pour le transport et/ou l'entreposage de matières radioactives. Elle concerne plus précisément les systèmes de communication fluidique entre l'intérieur de l'enceinte de confinement, et l'extérieur de celle-ci, en particulier lorsque ces systèmes ne sont pas obturés. The present invention relates to a package for transporting and / or storing radioactive material. It relates more specifically fluidic communication systems between the interior of the containment and the outside thereof, particularly when these systems are not closed.
ÉTAT DE LA TECHNIQUE ANTÉRIEURE STATE OF THE PRIOR ART
Les emballages de transport et/ou d'entreposage de matières radioactives ont pour fonction principale d'isoler leur contenu de l'environnement extérieur. Pour ce faire, l'emballage présente une enceinte de confinement dans laquelle sont logées les matières radioactives. Cette enceinte étanche est réalisée à l'aide de plusieurs éléments d'emballage, généralement un corps latéral, un couvercle, et un fond. The main function of transport and / or storage packages for radioactive materials is to isolate their contents from the external environment. To do this, the packaging has a containment chamber in which are housed the radioactive materials. This sealed enclosure is made using several packaging elements, usually a lateral body, a lid, and a bottom.
Ces éléments d'emballage sont classiquement équipés de systèmes de communication fluidique entre l'intérieur et l'extérieur de l'enceinte. Il peut par exemple s'agir d'un système d'évent permettant la mise à l'air de l'enceinte. Il peut aussi s'agir d'un système de drainage permettant d'extraire l'eau résiduelle de l'enceinte, lorsque l'emballage est chargé sous eau. Enfin, il peut s'agir d'un système de prélèvement gazeux dans l'enceinte de confinement.  These packaging elements are conventionally equipped with fluidic communication systems between the inside and the outside of the enclosure. It may for example be a vent system for venting the enclosure. It can also be a drainage system for extracting the residual water from the enclosure, when the package is loaded under water. Finally, it may be a gaseous sampling system in the containment.
L'extrémité externe de ces systèmes, également dite « zone de sortie de fluide de la surface externe », est habituellement connectée à un outil blindé de drainage ou d'évent, qui comprend un système d'étanchéité faisant en sorte que le confinement des matières radioactives reste garanti pendant les opérations de drainage, de mise à l'air ou encore de prélèvement gazeux. En configuration de transport et/ou d'entreposage, ces extrémités externes sont obturées à l'aide d'un ou plusieurs bouchons qui sont munis d'un système d'étanchéité, ces bouchons contribuant à définir l'enceinte de confinement. Les bouchons constituent également un blindage radiologique afin de limiter les fuites radiologiques au droit de ces systèmes, prenant généralement la forme de canaux droits traversant les éléments d'emballage précités. A cet égard, il est noté que chaque système de communication fluidique peut être associé à deux bouchons chacun muni d'au moins un joint, de façon à former une double barrière d'étanchéité lorsque l'enceinte de confinement le requiert. The outer end of these systems, also referred to as the "external surface fluid exit zone", is usually connected to a shielded drain or vent tool, which includes a sealing system ensuring that the containment of radioactive material remains guaranteed during drainage, venting or gas sampling operations. In transport and / or storage configuration, these external ends are closed with one or more plugs which are provided with a sealing system, these plugs helping to define the containment enclosure. The plugs also constitute a radiological shielding in order to limit the radiological leaks to the right of these systems, generally taking the form of straight channels passing through the aforementioned packaging elements. In this regard, it is noted that each fluid communication system can be associated with two plugs each provided with at least one seal, so as to form a double sealing barrier when the containment requires it.
En particulier durant certaines opérations d'exploitation de l'emballage, telles que des opérations de drainage classiques ou accidentelles nécessitant un changement des joints d'étanchéité du bouchon et donc un retrait du bouchon alors que l'enceinte de confinement comprend des matières radioactives, le niveau de protection radiologique peut alors s'avérer insuffisant au niveau des systèmes de communication fluidique. Le niveau de débit d'équivalent de dose peut alors être supérieur au critère requis en conditions d'exploitation.  In particular during certain operations of the packaging operation, such as conventional or accidental drainage operations requiring a change of the seals of the plug and therefore a removal of the plug while the containment comprises radioactive materials, the level of radiological protection may then be insufficient in the fluid communication systems. The dose equivalent rate level may then be higher than the required criterion under operating conditions.
EXPOSÉ DE L'INVENTION STATEMENT OF THE INVENTION
L'invention a donc pour but de remédier au moins partiellement au problème mentionné ci-dessus, relatif aux réalisations de l'art antérieur. The invention therefore aims to at least partially overcome the problem mentioned above, relating to the achievements of the prior art.
Pour ce faire, l'invention a pour objet un emballage pour le transport et/ou l'entreposage de matières radioactives, comprenant plusieurs éléments d'emballage délimitant ensemble intérieurement une enceinte de confinement des matières radioactives, au moins l'un des éléments d'emballage étant traversé par au moins un système de communication fluidique présentant, au niveau d'une surface intérieure de l'enceinte, au moins une ouverture d'entrée de fluide et, au niveau d'une zone de sortie de fluide de la surface extérieure de l'élément d'emballage concerné, au moins une ouverture de sortie de fluide, ledit système de communication fluidique étant associé à un bouchon d'obturation recouvrant ladite zone de sortie de fluide de manière à obturer ladite au moins une ouverture de sortie de fluide. Selon l'invention, le système de communication fluidique définit au moins deux chemins distincts de circulation de fluide entre ladite au moins une ouverture d'entrée de fluide et ladite au moins une ouverture de sortie de fluide. To do this, the subject of the invention is a packaging for transporting and / or storing radioactive materials, comprising a plurality of packaging elements internally defining a confinement chamber for the radioactive materials, at least one of the elements of wherein the package is traversed by at least one fluid communication system having, at an inner surface of the enclosure, at least one fluid inlet opening and, at a fluid outlet area of the surface external of the packaging element concerned, at least one fluid outlet opening, said fluid communication system being associated with a closure plug covering said fluid outlet zone so as to close said at least one outlet opening of fluid. According to the invention, the fluid communication system defines at least two distinct fluid flow paths between the at least one fluid inlet opening and the at least one fluid outlet opening.
L'invention prévoit ainsi, d'une manière originale, une duplication des chemins de circulation qui permet d'offrir un compromis satisfaisant entre la simplicité de forme des chemins concernés, et la protection radiologique conférée en cas de retrait du bouchon. Effectivement, prévoir non plus un seul chemin mais plusieurs chemins de plus faibles sections, permet d'augmenter la capacité de l'élément d'emballage équipé du système de communication fluidique à absorber les rayonnements gamma se produisant dans toutes les directions. Il est néanmoins noté que les différents chemins de circulation peuvent partager des zones communes, sans sortir du cadre de l'invention.  The invention thus provides, in an original manner, a duplication of traffic paths which makes it possible to offer a satisfactory compromise between the simplicity of shape of the paths concerned, and the radiological protection conferred in the event of withdrawal of the plug. Indeed, providing no longer a single path but several paths of smaller sections, increases the capacity of the packaging element equipped with the fluidic communication system to absorb gamma radiation occurring in all directions. It is nevertheless noted that the different traffic routes can share common areas, without departing from the scope of the invention.
De plus, l'invention permet également de limiter le débit de dose lorsque le bouchon est en place.  In addition, the invention also makes it possible to limit the dose rate when the stopper is in place.
L'invention présente de préférence au moins l'une quelconque des caractéristiques optionnelles suivantes, prises isolément ou en combinaison.  The invention preferably has at least one of the following optional features, taken alone or in combination.
Le système de communication fluidique comprend un nombre supérieur ou égal à un NI d'ouvertures d'entrée de fluide, ainsi qu'un nombre supérieur ou égal à un N2 d'ouvertures de sortie de fluide, le nombre NI étant supérieur, égal ou inférieur au nombre N2.  The fluidic communication system comprises a number greater than or equal to a NI of fluid inlet openings, and a number greater than or equal to one N2 of fluid outlet openings, the number N1 being greater, equal to or equal to less than the number N2.
Ledit bouchon d'obturation est au moins partiellement logé dans un logement prévu sur l'élément d'emballage associé, ledit logement étant défini par ladite zone de sortie de fluide de la surface extérieure de ce même élément d'emballage. Alternativement, il n'est prévu aucun logement spécifique pour le bouchon, qui se situe alors entièrement en saillie au niveau de cette surface extérieure de l'élément d'emballage. A cet égard, en position assemblée, le bouchon recouvre chaque ouverture de sortie de fluide, ou bien pénètre dans au moins l'une d'elles.  Said closure cap is at least partially housed in a housing provided on the associated packaging element, said housing being defined by said fluid outlet zone of the outer surface of the same packaging element. Alternatively, there is no specific housing for the plug, which is then entirely projecting at the outer surface of the packaging element. In this respect, in the assembled position, the cap covers each fluid outlet opening, or penetrates into at least one of them.
Les chemins distincts de circulation de fluide sont réalisés à partir de plusieurs canaux élémentaires qui communiquent avec au moins un canal principal de plus grande section et prévu dans un nombre inférieur à celui des canaux élémentaires, chaque canal principal définissant une partie de plusieurs desdits chemins de circulation de fluide. De plus, chaque canal principal débouche au niveau de la zone de sortie de fluide, et les canaux élémentaires débouchent dans l'enceinte de confinement, ou inversement. Dans cette configuration, l'emballage comporte préférentiellement deux canaux élémentaires débouchant dans l'enceinte de confinement, ainsi qu'un unique canal principal débouchant au niveau de la zone de sortie de fluide. The distinct paths of fluid circulation are made from several elementary channels which communicate with at least one main channel of larger section and provided in a number less than that of the elementary channels, each main channel defining a part of several of said paths. traffic of fluid. In addition, each main channel opens at the level of the fluid outlet zone, and the elementary channels open into the confinement enclosure, or vice versa. In this configuration, the package preferably comprises two elementary channels opening into the containment chamber, and a single main channel opening at the fluid outlet zone.
Alternativement, les chemins distincts de circulation de fluide sont réalisés à partir de plusieurs canaux élémentaires qui débouchent chacun d'une part dans l'enceinte de confinement, et d'autre part au niveau de la zone de sortie de fluide, et chaque canal élémentaire définit l'un desdits chemins de circulation de fluide.  Alternatively, the distinct paths of fluid circulation are made from several elementary channels which each open on the one hand in the confinement enclosure and on the other hand at the fluid outlet zone, and each elementary channel defines one of said fluid flow paths.
Encore une autre possibilité réside par exemple dans le fait d'avoir un canal principal d'entrée unique débouchant dans l'enceinte de confinement ainsi qu'un canal principal de sortie débouchant au niveau de la zone de sortie de fluide, et de prévoir un réseau de canaux secondaires reliant les deux canaux principaux.  Yet another possibility lies for example in having a single main inlet channel opening into the confinement enclosure and a main outlet channel opening at the fluid outlet zone, and providing a secondary channel network connecting the two main channels.
Les canaux élémentaires et/ou le/les canaux principaux sont droits, ou non-droits en présentant de préférence au moins un coude et/ou une chicane.  The elementary channels and / or the main channel (s) are straight, or non-right, preferably having at least one elbow and / or baffle.
Les canaux élémentaires et/ou le/les canaux principaux d'un même système de communication fluidique s'inscrivent dans un même plan fictif.  The elementary channels and / or the main channel (s) of the same fluid communication system are part of the same fictitious plane.
Tout ou partie des chemins distincts de circulation de fluide est réalisé au sein d'un insert rapporté sur l'élément d'emballage concerné. L'utilisation d'un insert offre une plus grande facilité de réalisation des chemins, et permet d'envisager une plus grande variété de formes, comme celle d'un coude ou analogue.  All or part of the separate paths of fluid circulation is performed within an insert reported on the packaging element concerned. The use of an insert provides greater ease of realization of the paths, and allows to consider a greater variety of forms, such as that of a bend or the like.
Ledit système de communication fluidique constitue de préférence un système de drainage, un système d'évent ou un système de prélèvement gazeux.  The fluid communication system is preferably a drainage system, a vent system or a gas sampling system.
Enfin, pour renforcer le blindage vis-à-vis du rayonnement gamma, une plaque en tungstène peut être rapportée sur l'élément d'emballage à proximité du système de communication fluidique. Tout autre matériau à haute densité peut également être envisagé pour former cette barrière additionnelle vis-à-vis du rayonnement gamma.  Finally, to enhance the shielding against gamma radiation, a tungsten plate may be attached to the packaging element in the vicinity of the fluid communication system. Any other high density material may also be considered to form this additional barrier to gamma radiation.
D'autres avantages et caractéristiques de l'invention apparaîtront dans la description détaillée non limitative ci-dessous. BRÈVE DESCRIPTION DES DESSINS Other advantages and features of the invention will become apparent in the detailed non-limiting description below. BRIEF DESCRIPTION OF THE DRAWINGS
Cette description sera faite au regard des dessins annexés parmi lesquels ; This description will be made with reference to the appended drawings among which;
- la figure 1 représente une vue schématique en coupe longitudinale d'un emballage pour l'entreposage et/ou le transport de matières radioactives, selon l'invention ;  - Figure 1 shows a schematic longitudinal sectional view of a package for the storage and / or transport of radioactive material according to the invention;
- la figure 2 est une vue en coupe transversale prise le long de la ligne I I- I I de la figure 1, montrant un système de communication fluidique équipant l'un des éléments d'emballage montré sur cette figure 1 ;  FIG. 2 is a cross-sectional view taken along the line of FIG. 1 showing a fluid communication system fitted to one of the packaging elements shown in FIG. 1;
- la figure 2a est une vue a nalogue à celle de la figure 2, avec le système de communication fluidique équipé de son bouchon. ;  FIG. 2a is a view similar to that of FIG. 2, with the fluidic communication system equipped with its plug. ;
- la figure 3 est une vue en coupe transversale prise le long de la ligne M INI de la figure 2 ;  FIG. 3 is a cross-sectional view taken along the line M INI of FIG. 2;
- la figure 4 est une vue en coupe transversale prise le long de la ligne IV-IV de la figure 2 ;  Fig. 4 is a cross-sectional view taken along the line IV-IV of Fig. 2;
- la figure 5 est une vue analogue à celle de la figure 2, selon une alternative de réalisation ; et  - Figure 5 is a view similar to that of Figure 2, according to an alternative embodiment; and
- les figures 6a à 6d sont des vues analogues à celle de la figure 5, montrant encore d'autres modes de réalisation préférés. EXPOSÉ DÉTAILLÉ DE MODES DE RÉALISATION PRÉFÉRÉS  FIGS. 6a to 6d are views similar to that of FIG. 5, showing still other preferred embodiments. DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
En référence tout d'abord à la figure 1, il est représenté une vue schématique en coupe longitudinale d'un emballage pour le transport et/ou l'entreposage de matières radioactives, comme des assemblages de combustible irradiés ou des déchets radioactifs 3. L'emballage 1 est représenté dans une position verticale d'entreposage, dans laquelle son axe longitudinal 2 est orienté verticalement. Referring firstly to Figure 1, there is shown a schematic longitudinal sectional view of a package for the transport and / or storage of radioactive materials, such as irradiated fuel assemblies or radioactive waste 3. L 1 is shown in a vertical storage position, in which its longitudinal axis 2 is oriented vertically.
L'emballage 1 comprend une enceinte de confinement 4 délimitée intérieurement par une pluralité d'éléments d'emballage, parmi lesquels un fond 6, un corps latéral 8 ainsi qu'un système de fermeture comprenant un ou plusieurs couvercles 10. Dans la suite de la description, pour des raisons de simplicité, il sera considéré que ce système contient un unique couvercle 10. Néanmoins, dans le cas où plusieurs couvercles sont superposés, l'invention est plus particulièrement mise en œuvre sur le couvercle le plus intérieur, qui donne directement accès à l'enceinte de confinement 4. The package 1 comprises a containment chamber 4 delimited internally by a plurality of packaging elements, among which a bottom 6, a lateral body 8 and a closure system comprising one or more lids 10. In the following description, for the sake of simplicity, it will be considered that this The system contains a single cover 10. Nevertheless, in the case where several covers are superimposed, the invention is more particularly implemented on the innermost cover, which gives direct access to the containment enclosure 4.
Le fond 6 et le couvercle 10 sont espacés l'un de l'autre selon l'axe longitudinal 2, sur lequel est centré le corps latéral 8 de section transversale circulaire ou de forme polygonale.  The bottom 6 and the cover 10 are spaced from each other along the longitudinal axis 2, on which is centered the lateral body 8 of circular cross section or polygonal shape.
L'emballage 1 comporte également un capot amortisseur de tête 12 ainsi qu'éventuellement un capot amortisseur de fond (non représenté). Le capot amortisseur de tête 12 est pourvu d'une zone creuse 16 centrée sur l'axe 2, cette zone creuse logeant au moins une partie du couvercle 10 ainsi qu'une extrémité de tête 8a du corps latéral 8.  The package 1 also comprises a head damping hood 12 and possibly a bottom damping hood (not shown). The head damping hood 12 is provided with a hollow zone 16 centered on the axis 2, this hollow zone housing at least a portion of the lid 10 and a head end 8a of the lateral body 8.
Le couvercle 10 est fixé de manière démontable sur le corps latéral 8, de préférence à l'aide de vis 22 dont l'une est montrée schématiquement par son trait d'axe.  The lid 10 is removably attached to the lateral body 8, preferably by means of screws 22, one of which is schematically shown by its center line.
Dans le mode de réalisation décrit et représenté, le corps latéral 8 présente au niveau de son extrémité de tête 8a un système de communication fluidique 30 propre à l'invention, qui va à présent être décrit en référence aux figures 2 à 4.  In the embodiment described and shown, the lateral body 8 has at its head end 8a a fluid communication system 30 specific to the invention, which will now be described with reference to Figures 2 to 4.
Tout d'abord, il est noté que le système 30 peut constituer un système de drainage, un système d'évent, ou encore un système de prélèvement gazeux. Il est associé à un bouchon d'obturation 32 contribuant à définir l'enceinte de confinement 4 lorsqu'il obture le système 30. Ce bouchon forme également un blindage radiologique afin de limiter les fuites radiologiques au droit du système 30.  First, it is noted that the system 30 may be a drainage system, a vent system, or a gas sampling system. It is associated with a closure plug 32 helping to define the containment chamber 4 when it closes the system 30. This plug also forms a radiological shield to limit radiological leakage to the system 30.
Lorsque le bouchon 32 est retiré, le système 30 est prévu pour coopérer avec un outil blindé de drainage ou d'évent, qui comprend un système d'étanchéité faisant en sorte que le confinement des matières radioactives reste garanti pendant les opérations réalisées.  When the cap 32 is removed, the system 30 is provided to cooperate with a shielded draining or venting tool, which comprises a sealing system ensuring that the confinement of the radioactive materials is guaranteed during the operations performed.
Le système de communication 30 traverse ici l'extrémité de tête 8a du corps latéral 8, qui est globalement formé par une virole métallique 34 recouverte radialement par une couche de protection neutronique 36. Ce système 30, qui prend la forme générale d'un réseau de canaux, présente deux ouvertures d'entrée de fluide 38a, 38b au niveau d'une surface intérieure 40 de l'enceinte de confinement 4. De plus, il comprend au niveau d'une zone de sortie de fluide 42 de la surface extérieure 44 du corps latéral, une unique ouverture de sortie de fluide 39. Lorsqu'il est monté, le bouchon 32 associé à ce système 30 recouvre cette zone de sortie de fluide 42, comme cela est visible sur la figure 2a. C'est d'ailleurs la partie de la surface extérieure 44 recouverte par le bouchon 32 qui délimite ladite zone de sortie de fluide 42 au sens de l'invention. Toujours dans cette position montée, le bouchon 32 obture l'ouverture de sortie de fluide 39, en la recouvrant ou en pénétrant également dans celle-ci. The communication system 30 passes through here the head end 8a of the lateral body 8, which is generally formed by a metal shell 34 radially covered by a neutron protection layer 36. This system 30, which takes the general shape of a network of channels, has two fluid inlet openings 38a, 38b at an inner surface 40 of the containment chamber 4. In addition, comprises at a fluid outlet zone 42 of the outer surface 44 of the lateral body, a single fluid outlet opening 39. When mounted, the plug 32 associated with this system 30 covers this exit zone of fluid 42, as can be seen in FIG. 2a. This is also the portion of the outer surface 44 covered by the cap 32 which defines said fluid outlet zone 42 within the meaning of the invention. Still in this mounted position, the plug 32 closes the fluid outlet opening 39, covering or penetrating therein as well.
Dans ce mode de réalisation préféré, la zone de sortie de fluide 42 définit un logement 48 prévu pour loger au moins une partie du bouchon d'obturation 32, lorsque celui-ci occupe sa position montée. Dans cette réalisation, le bouchon 32 est ainsi au moins partiellement intégré dans le corps latéral 8, comme cela est visible sur la figure 2a.  In this preferred embodiment, the fluid outlet zone 42 defines a housing 48 provided for housing at least a portion of the closure cap 32, when it occupies its mounted position. In this embodiment, the plug 32 is thus at least partially integrated into the lateral body 8, as can be seen in FIG. 2a.
L'une des particularités de l'emballage réside dans le fait que le système de communication fluidique 30 définit deux chemins distincts de circulation de fluide 46a, 46b entre l'intérieur et l'extérieur de l'enceinte de confinement 4. Plus précisément, le premier chemin 46a débute au niveau de la première ouverture d'entrée de fluide 38a à partir de laquelle s'étend un premier canal élémentaire 48a comportant un coude 50, par exemple à 90°. De manière analogue, le second chemin 46b débute au niveau de la seconde ouverture d'entrée de fluide 38b à partir de laquelle s'étend un second canal élémentaire 48b comportant un coude 50, également de l'ordre de exemple à 90°. Les deux canaux élémentaires 48a, 48b disposent chacun d'une partie amont et d'une partie aval séparées par le coude 50. Les deux parties amont sont sensiblement parallèles, tandis que les deux parties aval sont d'axes confondus et se rejoignent au niveau d'une jonction avec un canal principal 52 définissant une partie aval commune aux deux chemins de circulation de fluide 46a, 46b.  One of the peculiarities of the package lies in the fact that the fluidic communication system 30 defines two distinct fluid circulation paths 46a, 46b between the inside and the outside of the containment enclosure 4. More precisely, the first path 46a begins at the first fluid inlet opening 38a from which extends a first elementary channel 48a having a bend 50, for example 90 °. Similarly, the second path 46b begins at the second fluid inlet opening 38b from which extends a second elementary channel 48b having a bend 50, also of the order of example at 90 °. The two elementary channels 48a, 48b each have an upstream part and a downstream part separated by the bend 50. The two upstream parts are substantially parallel, while the two downstream parts are of coinciding axes and meet at the same level. a junction with a main channel 52 defining a downstream portion common to the two fluid flow paths 46a, 46b.
Le canal principal 52 est préférentiellement droit, et présente un axe parallèle aux deux axes des parties amont des deux canaux élémentaires 48a, 48b. De préférence, l'axe du canal principal 52 est agencé entre les deux axes précités, qui sont répartis de façon symétrique par rapport à cet axe du canal principal. De plus, les canaux 48a, 48b, 52 s'inscrivent préférentiellement dans un même plan 54 schématisé sur la figure 4, correspondant à un plan transversal de l'emballage, c'est-à-dire orthogonal à son axe 2. Il est noté que dans le cas où le système 30 est implanté sur le couvercle, le plan fictif dans lequel s'intègrent les canaux est préférentiellement un plan longitudinal de l'emballage, passant par son axe 2. The main channel 52 is preferably straight, and has an axis parallel to the two axes of the upstream portions of the two elementary channels 48a, 48b. Preferably, the axis of the main channel 52 is arranged between the two aforementioned axes, which are distributed symmetrically with respect to this axis of the main channel. In addition, the channels 48a, 48b, 52 are preferably inscribed in the same plane 54 schematized on the 4, corresponding to a transverse plane of the package, that is to say orthogonal to its axis 2. It is noted that in the case where the system 30 is implanted on the cover, the fictitious plane in which s' integrate the channels is preferably a longitudinal plane of the package, passing through its axis 2.
Dans ce mode de réalisation, l'unique canal principal 52 se termine par l'ouverture de sortie de fluide 39 débouchant dans le logement 48 défini par la zone de sortie de fluide 42. Les deux chemins 46a, 46b, après s'être rejoints dans le canal principal 52, débouchent ainsi dans le logement 48.  In this embodiment, the single main channel 52 ends with the fluid outlet opening 39 opening into the housing 48 defined by the fluid outlet area 42. The two paths 46a, 46b, after joining in the main channel 52, thus open in the housing 48.
Pour gérer au mieux l'écoulement entre les ouvertures d'entrée 38a, 38b et l'ouverture de sortie 39, les canaux élémentaires 48a, 48b présentent chacun une section inférieure à celle du canal principal 52. De préférence, la somme des sections des deux canaux élémentaires 48a, 48b est identique ou similaire à la section plus élevée du canal principal 52.  To best manage the flow between the inlet openings 38a, 38b and the outlet opening 39, the elementary channels 48a, 48b each have a section smaller than that of the main channel 52. Preferably, the sum of the sections of the two elementary channels 48a, 48b are identical or similar to the higher section of the main channel 52.
Les canaux 48a, 48b, 52 sont réalisés directement dans la virole 34, ou bien dans un insert 60 rapporté dans un logement 62 pratiqué dans cette virole, au niveau de la surface intérieure 40 de l'enceinte de confinement. Cette dernière solution, représentée sur les figures, permet de faciliter la réalisation des canaux, notamment lorsqu'ils comprennent des coudes à 90°.  The channels 48a, 48b, 52 are made directly in the shell 34, or in an insert 60 reported in a housing 62 formed in this shell, at the inner surface 40 of the containment. This latter solution, shown in the figures, makes it easier to make the channels, especially when they include 90 ° bends.
La figure 5 représente une alternative de réalisation dans laquelle le bouchon 32 ne se situe plus dans un logement, mais se trouve entièrement en saillie en rapport à la surface extérieure 44 du corps latéral. Le bouchon 32 recouvre ici la zone de sortie de fluide 42 de la surface 44, et recouvre l'ouverture de sortie 39.  Figure 5 shows an alternative embodiment in which the plug 32 is no longer in a housing, but is entirely projecting relative to the outer surface 44 of the lateral body. The plug 32 here covers the fluid outlet zone 42 of the surface 44, and covers the outlet opening 39.
Les figures 6a à 6d représentent d'autres modes de réalisation envisageables, partageant tous le même concept inventif visant à prévoir plusieurs chemins de circulation de fluide associés à un même bouchon d'obturation 32.  FIGS. 6a to 6d show other conceivable embodiments, all sharing the same inventive concept aiming at providing several fluid circulation paths associated with the same closure plug 32.
Sur la figure 6a, deux canaux élémentaires 48a, 48b sont distincts l'un de l'autre et définissent respectivement deux chemins de circulation de fluide 46a, 46b indépendants. Les canaux sont droits et inclinés l'un par rapport à l'autre, de manière former un V. Chaque canal élémentaire 48a, 48b s'étend donc entre l'ouverture d'entrée 38a, 38b et l'ouverture de sortie de fluide 39a, 39b. Sur la figure 6b, la réalisation diffère de la précédente en ce que chaque canal élémentaire 38a, 38b intègre en plus une chicane 64. In Figure 6a, two elementary channels 48a, 48b are distinct from each other and respectively define two independent fluid flow paths 46a, 46b. The channels are straight and inclined relative to each other, so as to form a V. Each elementary channel 48a, 48b therefore extends between the inlet opening 38a, 38b and the fluid outlet opening. 39a, 39b. In FIG. 6b, the embodiment differs from the previous embodiment in that each elementary channel 38a, 38b additionally integrates a baffle 64.
Sur la réalisation de la figure 6c, la conception diffère de celle de la figure 5 par le simple fait que les parties amont des canaux élémentaires 48a, 48b ne sont plus parallèles, mais inclinées l'une par rapport à l'autre pour former un V.  In the embodiment of Figure 6c, the design differs from that of Figure 5 by the simple fact that the upstream portions of the elementary channels 48a, 48b are no longer parallel, but inclined relative to each other to form a V.
Enfin, sur la réalisation de la figure 6d, la conception est inversée par rapport à celle de la figure 5, en prévoyant un canal principal 52 s'étendant à partir de l'ouverture d'entrée 38, ainsi que deux canaux élémentaires 48a, 48b se terminant respectivement par deux ouvertures de sortie 39a, 39b. Dans cette réalisation, les deux chemins distincts 46a, 46b sont confondus en amont dans le canal principal 52, avant de se séparer en passant respectivement par les deux canaux élémentaires 48a, 48b.  Finally, in the embodiment of FIG. 6d, the design is inverted with respect to that of FIG. 5, by providing a main channel 52 extending from the inlet opening 38, as well as two elementary channels 48a. 48b ending respectively in two outlet openings 39a, 39b. In this embodiment, the two distinct paths 46a, 46b are merged upstream in the main channel 52, before separating by passing respectively through the two elementary channels 48a, 48b.
Bien entendu, diverses modifications peuvent être apportées par l'homme du métier à l'invention qui vient d'être décrite, uniquement à titre d'exemples non limitatifs. En particulier, les différents modes de réalisation qui ont été détaillés ci- dessus sont combinables entre eux. De plus, les systèmes de communication fluidique propres à l'invention peuvent non seulement être mis en œuvre au niveau du corps latéral 8 comme cela a été décrit ci-dessus, mais également à travers le couvercle 10, voire à travers le fond 6. Egalement, les nombres NI d'ouvertures d'entrée de fluide et N2 d'ouvertures de sortie de fluide pourraient être supérieurs à deux, sans sortir du cadre de l'invention.  Of course, various modifications may be made by those skilled in the art to the invention which has just been described, solely by way of non-limiting examples. In particular, the various embodiments that have been detailed above are combinable with each other. In addition, the fluidic communication systems according to the invention can not only be implemented at the lateral body 8 as described above, but also through the cover 10, or even through the bottom 6. Also, the numbers N1 of fluid inlet openings and N2 of fluid outlet openings could be greater than two, without departing from the scope of the invention.

Claims

REVENDICATIONS
1. Emballage (1) pour le transport et/ou l'entreposage de matières radioactives, comprenant plusieurs éléments d'emballage (6, 8, 10) délimitant ensemble intérieurement une enceinte de confinement (4) des matières radioactives (3), au moins l'un des éléments d'emballage étant traversé par au moins un système de communication fluidique (30) présentant, au niveau d'une surface intérieure (40) de l'enceinte, au moins une ouverture d'entrée de fluide (38, 38a, 38b) et, au niveau d'une zone de sortie de fluide (42) de la surface extérieure (44) de l'élément d'emballage concerné, au moins une ouverture de sortie de fluide (39, 39a, 39b), ledit système de communication fluidique étant associé à un bouchon d'obturation (32) recouvrant ladite zone de sortie de fluide (42) de manière à obturer ladite au moins une ouverture de sortie de fluide, caractérisé en ce que le système de communication fluidique (30) définit au moins deux chemins distincts de circulation de fluide (46a, 46b) entre ladite au moins une ouverture d'entrée de fluide (38, 38a, 38b) et ladite au moins une ouverture de sortie de fluide (39, 39a, 39b). 1. Packaging (1) for the transport and / or storage of radioactive material, comprising a plurality of packaging elements (6, 8, 10) internally defining a containment (4) of the radioactive material (3), at the least one of the packaging elements being traversed by at least one fluid communication system (30) having, at an inner surface (40) of the enclosure, at least one fluid inlet opening (38); 38a, 38b) and, at a fluid outlet region (42) of the outer surface (44) of the packaging member concerned, at least one fluid outlet opening (39, 39a, 39b ), said fluid communication system being associated with a closure plug (32) covering said fluid outlet zone (42) so as to close said at least one fluid outlet opening, characterized in that the communication system fluidic device (30) defines at least two distinct flow paths of flu ide (46a, 46b) between said at least one fluid inlet opening (38, 38a, 38b) and said at least one fluid outlet opening (39, 39a, 39b).
2. Emballage selon la revendication 1, caractérisé en ce que le système de communication fluidique comprend un nombre supérieur ou égal à un NI d'ouvertures d'entrée de fluide (38, 38a, 38b), ainsi qu'un nombre supérieur ou égal à un N2 d'ouvertures de sortie de fluide (39, 39a, 39b), le nombre NI étant supérieur, égal ou inférieur au nombre N2. 2. Package according to claim 1, characterized in that the fluidic communication system comprises a number greater than or equal to a NI of fluid inlet openings (38, 38a, 38b) and a greater or equal number at a N2 of fluid outlet openings (39, 39a, 39b), the number N1 being greater than, equal to or less than the number N2.
3. Emballage selon la revendication 1 ou la revendication 2, caractérisé en ce que ledit bouchon d'obturation (32) est au moins partiellement logé dans un logement (48) prévu sur l'élément d'emballage associé, ledit logement étant défini par ladite zone de sortie de fluide (42) de la surface extérieure (44) de ce même élément d'emballage. 3. Packaging according to claim 1 or claim 2, characterized in that said closure cap (32) is at least partially housed in a housing (48) provided on the associated packaging element, said housing being defined by said fluid outlet region (42) of the outer surface (44) of the same packaging member.
4. Emballage selon l'une quelconque des revendications précédentes, caractérisé en ce que les chemins distincts de circulation de fluide (46a, 46b) sont réalisés à partir de plusieurs canaux élémentaires (48a, 48b) qui communiquent avec au moins un canal principal (52) de plus grande section et prévu dans un nombre inférieur à celui des canaux élémentaires (48a, 48b), chaque canal principal (52) définissant une partie de plusieurs desdits chemins de circulation de fluide (46a, 46b), et en ce que chaque canal principal (52) débouche au niveau de la zone de sortie de fluide (42), et les canaux élémentaires (46a, 46b) débouchent dans l'enceinte de confinement (4), ou inversement. 4. Packaging according to any one of the preceding claims, characterized in that the distinct paths of fluid circulation (46a, 46b) are made from several elementary channels (48a, 48b) which communicate with at least one main channel ( 52) of greater section and provided in a number smaller than that of the elementary channels (48a, 48b), each main channel (52) defining a portion of a plurality of said fluid circulation paths (46a, 46b), and in that each main channel (52) opens out at the fluid exit zone (42), and the elementary channels (46a, 46b) open into the confinement chamber (4), or vice versa.
5. Emballage selon la revendication 4, caractérisé en ce qu'il comporte deux canaux élémentaires (48a, 48b) débouchant dans l'enceinte de confinement (4), ainsi qu'un unique canal principal (52) débouchant au niveau de la zone de sortie de fluide (42). 5. Packaging according to claim 4, characterized in that it comprises two elementary channels (48a, 48b) opening into the confinement chamber (4), and a single main channel (52) opening at the zone fluid outlet (42).
6. Emballage selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les chemins distincts de circulation de fluide (46a, 46b) sont réalisés à partir de plusieurs canaux élémentaires (48a, 48b) qui débouchent chacun d'une part dans l'enceinte de confinement (4), et d'autre part au niveau de la zone de sortie de fluide (42), et en ce que chaque canal élémentaire (48a, 48b) définit l'un desdits chemins de circulation de fluide (46a, 46b). 6. Packaging according to any one of claims 1 to 3, characterized in that the distinct paths of fluid circulation (46a, 46b) are made from several elementary channels (48a, 48b) which each open on the one hand in the containment enclosure (4), and secondly at the fluid outlet region (42), and in that each elementary channel (48a, 48b) defines one of said fluid circulation paths (46a, 46b).
7. Emballage selon l'une quelconque des revendications 4 à 6, caractérisé en ce que les canaux élémentaires et/ou le/les canaux principaux sont droits, ou non-droits en présentant de préférence au moins un coude (50) et/ou une chicane (64). Pack according to any one of claims 4 to 6, characterized in that the elementary channels and / or the main channel (s) are straight, or non-straight, preferably having at least one elbow (50) and / or a baffle (64).
8. Emballage selon l'une quelconque des revendications 4 à 7, caractérisé en ce que les canaux élémentaires et/ou le/les canaux principaux s'inscrivent dans un même plan fictif (54). 8. Packaging according to any one of claims 4 to 7, characterized in that the elementary channels and / or the / the main channels are part of the same fictitious plane (54).
9. Emballage selon l'une quelconque des revendications précédentes, caractérisé en ce que tout ou partie des chemins distincts de circulation de fluide (46a, 46b) est réalisé au sein d'un insert (60) rapporté sur l'élément d'emballage concerné. 9. Package according to any one of the preceding claims, characterized in that all or part of the separate fluid flow paths (46a, 46b) is formed within an insert (60) attached to the packaging element. concerned.
10. Emballage selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit système de communication fluidique (30) constitue un système de drainage, un système d'évent ou un système de prélèvement gazeux. 10. Packaging according to any one of the preceding claims, characterized in that said fluid communication system (30) is a drainage system, a vent system or a gas sampling system.
PCT/FR2017/053435 2016-12-09 2017-12-07 Packaging for transporting and/or storing radioactive substances comprising an improved system for fluidic communication between the inside and the outside of the containment WO2018104670A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2019530124A JP7018445B2 (en) 2016-12-09 2017-12-07 Packaging for transport and / or storage of radioactive material with an improved fluid communication system inside and outside the containment vessel
ES17821974T ES2853982T3 (en) 2016-12-09 2017-12-07 Radioactive material transport and / or storage packaging comprising an improved fluid communication system between the inside and outside of the confinement space
EP17821974.7A EP3552215B1 (en) 2016-12-09 2017-12-07 Packaging for transporting and/or storing radioactive substances comprising an improved system for fluidic communication between the inside and the outside of the containment
CN201780075739.0A CN110050309B (en) 2016-12-09 2017-12-07 Package for transporting and/or storing radioactive materials comprising an improved system for fluid communication between the inside and the outside of an enclosed space

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1662237A FR3060192B1 (en) 2016-12-09 2016-12-09 TRANSPORT AND / OR STORAGE PACKAGING OF RADIOACTIVE MATERIALS COMPRISING AN IMPROVED FLUIDIC COMMUNICATION SYSTEM BETWEEN INTERIOR AND OUTSIDE OF CONFINEMENT ENCLOSURE
FR1662237 2016-12-09

Publications (1)

Publication Number Publication Date
WO2018104670A1 true WO2018104670A1 (en) 2018-06-14

Family

ID=58737627

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2017/053435 WO2018104670A1 (en) 2016-12-09 2017-12-07 Packaging for transporting and/or storing radioactive substances comprising an improved system for fluidic communication between the inside and the outside of the containment

Country Status (6)

Country Link
EP (1) EP3552215B1 (en)
JP (1) JP7018445B2 (en)
CN (1) CN110050309B (en)
ES (1) ES2853982T3 (en)
FR (1) FR3060192B1 (en)
WO (1) WO2018104670A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2735799C1 (en) * 2020-02-25 2020-11-09 Федеральное государственное унитарное предприятие "Российский Федеральный ядерный центр - Всероссийский научно-исследовательский институт экспериментальной физики" (ФГУП "РФЯЦ-ВНИИЭФ") Method for loading a casing with a high activity radionuclide into a shielding container and a device for its implementation
FR3114907B1 (en) * 2020-10-07 2022-12-23 Tn Int PACKAGING FOR THE TRANSPORT AND/OR STORAGE OF RADIOACTIVE MATERIALS, INCLUDING A RADIOLOGICAL PROTECTION DEVICE REDUCING THE RISKS OF RADIOLOGICAL LEAKS

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2762132A1 (en) * 1997-04-10 1998-10-16 Commissariat Energie Atomique PACKAGE FOR TRANSPORTING DANGEROUS PACKAGES, SUCH AS HIGH-ACTIVITY NUCLEAR PACKAGES
FR3006098A1 (en) * 2013-05-22 2014-11-28 Tn Int IRRADIE FUEL STORAGE PACKAGE INCLUDING AMORTIZED CASE GUIDANCE RAILS

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2419568A1 (en) * 1978-03-09 1979-10-05 Commissariat Energie Atomique JUNCTION DEVICE BETWEEN A CONTAINER AND A UNLOADING ENCLOSURE
JPH01131200U (en) * 1988-03-01 1989-09-06
SE521224C2 (en) * 2001-01-29 2003-10-14 Hans Georgii Device for storing heat-producing hazardous materials, in particular nuclear fuel, and for such a device intended
US7707741B2 (en) * 2005-06-06 2010-05-04 Holtec International, Inc. Method and apparatus for dehydrating high level waste based on dew point temperature measurements
CN103531259A (en) * 2007-10-29 2014-01-22 霍尔泰克国际股份有限公司 Apparatus for supporting radioactive fuel assemblies
FR2961005B1 (en) * 2010-06-02 2015-12-11 Tn Int PACKAGING FOR THE TRANSPORT AND / OR STORAGE OF RADIOACTIVE MATERIALS, INCLUDING IMPROVED THERMAL CONDUCTION MEANS
FR2985365B1 (en) * 2011-12-29 2014-01-24 Tn Int THERMAL DRIVER FOR SIDE BODY FOR PACKAGING TRANSPORT AND / OR STORAGE OF RADIOACTIVE MATERIALS
FR2996346B1 (en) * 2012-10-02 2014-10-31 Tn Int PACKAGING FOR THE TRANSPORT AND / OR STORAGE OF RADIOACTIVE MATERIALS, COMPRISING IMPROVED MEANS FOR FIXING A SHOCK ABSORBER COVER
US9466400B2 (en) * 2013-01-25 2016-10-11 Holtec International Ventilated transfer cask with lifting feature
US20140270042A1 (en) * 2013-03-13 2014-09-18 Westinghouse Electric Company Llc Source of electricity derived from a spent fuel cask
EP2969056A4 (en) * 2013-03-14 2016-12-21 Atomic Energy Of Canada Limited/ Énergie Atomique Du Canada Limitée Sealing apparatus for mitigating emissions of hazardous gases

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2762132A1 (en) * 1997-04-10 1998-10-16 Commissariat Energie Atomique PACKAGE FOR TRANSPORTING DANGEROUS PACKAGES, SUCH AS HIGH-ACTIVITY NUCLEAR PACKAGES
FR3006098A1 (en) * 2013-05-22 2014-11-28 Tn Int IRRADIE FUEL STORAGE PACKAGE INCLUDING AMORTIZED CASE GUIDANCE RAILS

Also Published As

Publication number Publication date
EP3552215A1 (en) 2019-10-16
JP2020501150A (en) 2020-01-16
CN110050309B (en) 2023-02-17
ES2853982T3 (en) 2021-09-20
FR3060192B1 (en) 2019-05-17
FR3060192A1 (en) 2018-06-15
EP3552215B1 (en) 2020-11-18
CN110050309A (en) 2019-07-23
JP7018445B2 (en) 2022-02-10

Similar Documents

Publication Publication Date Title
EP1166279A1 (en) Installation for very long term storage of heat-generating products such as nuclear waste
EP0942435B1 (en) Radiation screening arrangement for radioactive material transport container and method of setting up such a radiation screening arrangement
EP3042378B1 (en) Package comprising improved means for shock absorbance between an assembly containing radioactive materials and the cover of the packaging
EP3552215B1 (en) Packaging for transporting and/or storing radioactive substances comprising an improved system for fluidic communication between the inside and the outside of the containment
FR2987607A1 (en) CAP FOR A COLLAR OF CONTAINER
FR2896613A1 (en) Storage unit for nuclear fuel in cases has chambers set in hexagonal configuration and ventilation system
EP2320429B1 (en) Packaging for transporting and/or storing radioactive materials including radially stacked radiation protection elements
EP1344227B1 (en) Packaging device for bulk transportation of uraniferous fissile materials
FR3020173A1 (en) PACKAGING FOR THE TRANSPORT AND / OR STORAGE OF RADIOACTIVE MATERIALS, COMPRISING A REINFORCED EFFICIENCY ANGLE SHOCK ABSORBER
WO2010102990A1 (en) Casing for storing used nuclear fuel with easy closing
FR2478861A1 (en) Shielded transport and storage container esp. for irradiated fuel
EP3782168B1 (en) Container for transport and/or disposal of radioactive material with device for easier handling of radioactive materials
EP4126692B1 (en) Cap suitable for containing a fluid
EP4315369B1 (en) Device for the transport of uranium hexafluoride comprising shock absorbers
EP2237385B1 (en) Cable grommet fitting
EP0509926A1 (en) Installation for the biological shielding of a circuit element for radioactive fluid
FR3057819B1 (en) VEHICLE COMPRISING AN OPENING STOP TO ALLOW CONTROLLED WATER FLOW
EP2805332B1 (en) Safety valve and anti-radiation device
FR3134222A1 (en) PACKAGE INCLUDING PACKAGING FOR THE TRANSPORT AND/OR STORAGE OF RADIOACTIVE CONTENT, AND INCLUDING AN INTERNAL DAMPING SYSTEM WITH REDUCED SIZE
EP2912357B1 (en) Single-use valve
EP4187697A2 (en) Assembly for a vehicle having a plurality of batteries and a drain system
FR3113538A1 (en) UNIT FOR THE TRANSPORT OF URANIUM HEXAFLUORIDE
FR3076057A1 (en) TRANSPORT AND / OR STORAGE PACKAGING OF RADIOACTIVE MATERIALS HAVING IMPROVED MEANS FOR MAINTAINING SHOCK CAP
FR2954198A1 (en) METHOD FOR BRAZING AN AIR CONDITIONING CIRCUIT COMPONENT COMPRISING A REFRIGERANT FLUID RESERVOIR BOTTLE AND SUCH A BOTTLE
FR2920334A1 (en) PROTECTION SYSTEM FOR GANTRY BOX OPENING

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17821974

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2019530124

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2017821974

Country of ref document: EP

Effective date: 20190709