EP0338894A1 - Container for storing radioactive waste - Google Patents

Container for storing radioactive waste Download PDF

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Publication number
EP0338894A1
EP0338894A1 EP89401011A EP89401011A EP0338894A1 EP 0338894 A1 EP0338894 A1 EP 0338894A1 EP 89401011 A EP89401011 A EP 89401011A EP 89401011 A EP89401011 A EP 89401011A EP 0338894 A1 EP0338894 A1 EP 0338894A1
Authority
EP
European Patent Office
Prior art keywords
container
plug
annular element
stopper
container according
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
Application number
EP89401011A
Other languages
German (de)
French (fr)
Other versions
EP0338894B1 (en
Inventor
Pascal Phlix
Jean-Paul Credoz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electricite de France SA
Original Assignee
Electricite de France SA
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 Electricite de France SA filed Critical Electricite de France SA
Priority to AT89401011T priority Critical patent/ATE92667T1/en
Publication of EP0338894A1 publication Critical patent/EP0338894A1/en
Application granted granted Critical
Publication of EP0338894B1 publication Critical patent/EP0338894B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/28—Treating solids
    • G21F9/34—Disposal of solid waste
    • G21F9/36—Disposal of solid waste by packaging; by baling

Definitions

  • the invention relates to storage containers for radioactive waste, more particularly suitable for the storage of weakly and moderately radioactive solidified waste from nuclear sites.
  • the containers concerned are concrete containers and the waste consists in particular of so-called process waste such as filters, evaporator concentrates and used ion exchange resins. Concrete containers are essential for the transport and storage of such radioactive waste as soon as the radioactivity measured exceeds 200 mrem / h.
  • Liquid waste is poured into containers and then conditioned for solidification.
  • Storage containers should be designed to provide optimal usable volume while ensuring biological protection over time.
  • the known containers consist of a container closed by a stopper.
  • the container comprises a concrete shell or envelope and an inner metal tank, the wall of which comprises, if necessary, a layer of lead constituting a shield.
  • the plug is a plug, most often made of concrete, poured on site. Concrete plugs poured in situ sometimes show some cracking due to the dimensional variations of the concrete over time and they are of variable quality and difficult to control.
  • Other known plugs consist of lead beads embedded in a mixture of pitch and epoxy resin. This solution offers better protection against radiation, but it is difficult and expensive to carry out.
  • the object of the invention is to obviate these drawbacks by proposing a container allowing faster and safer closure with the aid of a stopper, the quality of which can be checked beforehand.
  • the subject of the invention is a container for storing radioactive waste, more particularly suitable for storing weakly or moderately radioactive solidified waste, consisting of a container and a plug, the container comprising an external concrete envelope and an internal wall. composite forming both tanks intended to contain the waste while making it possible to absorb dimensional variations over time of the envelope, and to thermally insulate the envelope from the interior of the tank and, in cooperation with the latter , to confine the radiation inside the container, the container further comprising a seat for the plug and connecting means intended to cooperate with means for connecting the plug, characterized in that the plug is a prefabricated concrete plug .
  • the use of the invention allows, in addition, a lower requirement in qualification of operating personnel, which is of interest, particularly in exported installations (South Africa, South Korea, People's China, ).
  • the stopper has a metallic coating, the edge of which constitutes said means for connecting the stopper and whose face facing the tank defines the interior volume of the container therewith; the container is provided with an annular element integral with the tank and bearing on the envelope to form the seat for the stopper; the outer edge of the annular element constitutes the means for connecting the container; the edges of the covering of the plug and of the annular element are, after the fitting of the plug on the seat, juxtaposed and project towards the outside of the container.
  • the edges are tightly connected together by a continuous weld bead or a continuous crimp.
  • the metal coating is bowl-shaped; the annular element comprises a radial core and a skirt directed upwards; the edges of the bowl and the skirt protrude towards the top of the container.
  • the plug is provided with a recess extending over the entire periphery of its upper face; the envelope of the container is provided with a recess corresponding to the end of its internal wall opposite the stopper; the recesses form, when the stopper is placed on the container, a groove into which the edges of the bowl and the skirt open.
  • the side wall of the cap coating and the skirt of the annular container element are flared in order to ensure centering and to contribute to the sealing by contact of the side wall of the coating of the cap on the skirt.
  • FIGS 1 and 2 show a first embodiment of the invention.
  • the container 1 consists of a container 2 hermetically closed using a prefabricated concrete plug 3.
  • the container has an outer casing 4 of concrete and a composite inner wall 5 forming a tank.
  • the internal wall is of cylindrical shape and composed of different elements arranged in the following order, seen from the inside to the outside of FIG. 1: first a first steel element 6 forming the internal face of the container, followed by an element made of heavy material such as lead 7 forming a shield against radiation. This shielding is covered by a second steel element 8 followed by a flexible element 9.
  • the flexible element 9 has the function of absorbing the dimensional variations over time of the envelope 2, which is essential to avoid cracks in the concrete caused by tensions in the latter during its removal.
  • the flexible element 9 must also serve as thermal insulation when filling the container 2, since the waste can be poured into the container in the state hot and undergo a temperature rise during solidification, which causes thermal stresses in the concrete. It is therefore desirable to mitigate these stresses by having a heat-insulating element between the tank and the concrete envelope.
  • the flexible element 9 is preferably made of expanded polystyrene.
  • the element must be protected against the humidity contained in the concrete and this protection can be ensured by a layer 10 of an appropriate material, for example polyane, applied to the external face of the flexible element 9 in order to prevent that it is in direct contact with the concrete casing 4.
  • a layer 10 of an appropriate material for example polyane
  • An agitator 13 can be used for packaging the waste for solidification and it then remains with the waste in the container.
  • a shoe 11 forming a support for the axis 12 of the agitator 13 with blades 14 is fixed to the center of the bottom of the tank 5.
  • the container 2 is provided with an annular element 15 integral with the open end of the tank 5 and intended to form a seat for the plug 3.
  • the annular element 15 comprises a radial core 16, a skirt 17 directed upwards and an axial re-entrant collar 18 which forms an anti-overflow member during the agitation of the waste with a view to its conditioning and which delimits the useful volume of the container.
  • the container 2 is, over its entire periphery, provided with a groove 19 intended to receive a belt for handling the empty container or the filled and closed container.
  • the concrete plug 3 is provided with a metal coating 20 whose face facing the tank 5 defines therewith the interior volume of the container.
  • the metal coating 20 is in the form of a bowl.
  • the side wall 21 of the bowl 20 cooperates, when the cap 3 is in place on the container 2, with the skirt 17 of the annular element 15 of the container 2 so that their respective edges form means of connection of the cap with the container.
  • the edges are juxtaposed and assembled over their entire length by a continuous weld bead 22.
  • the weld bead is advantageously applied using a welding robot, which makes it possible to automate the entire sealing process. This assembly process also has the advantage of ensuring an absolutely tight seal between the elements.
  • the side wall 21 of the bowl 20 and the skirt 17 of the annular element 15 preferably have a flared shape.
  • the flared shape ensures the centering of the plug 3 when it is placed on the container 2.
  • the skirt 17 of flared shape forms a bearing surface against which the side wall 21 of the covering 20 also flared rests, this which also contributes to sealing between the plug 3 and the container 2.
  • the side wall 21 of the bowl 20 and the skirt 17 of the annular element 15 can also be of cylindrical shape, which then requires a cer tain play between these elements to facilitate the installation of the plug.
  • the outer concrete casing 4 projects in height above the skirt 17 of the annular element.
  • the open face of the plug 3 preferably flush or slightly exceeds the upper end face of the casing 4, when the plug is placed on its seat, in order to present a surface as homogeneous as possible to facilitate the stacking of the containers during storage.
  • the envelope 4 of the container 2 is, at the end of its internal wall which faces the plug 3, provided with a continuous recess 23a.
  • the plug is provided with a corresponding recess 23b extending over the entire periphery of its upper face.
  • the recesses 23a, 23b form, when the cap is placed on the container, a groove 23 into which the edges of the bowl 20 and of the skirt 17 open.
  • the groove 23 is filled with a mortar 24 to protect the weld bead 22.
  • the groove 23 communicates with the external lateral wall of the casing 4 by radial grooves 26 forming weirs regularly disposed at the open end of the latter.
  • the container is preferably provided with a ring 25 of heavy material of the same kind as the shield 7 forming a shield compensating for the reduction in thickness of the wall of the container and of the plug due to the presence of said groove 23.
  • L 'ring 25 is disposed inside the container 2 and connected to the annular element 15 thereof.
  • the ring 25 can be an insert as shown in FIG. 1 or be part of the shield 7 of the internal wall 5.
  • the plug 3 is provided with two threaded sockets 27 arranged in opposite recesses 28 on its upper face.
  • the sockets are intended to cooperate with screws 29 integral with lifting rings 30 put in place only during the handling of the plug.
  • FIG. 3 is a partial sectional view of a variant of the first embodiment of the invention.
  • the container 31 consists of a concrete casing 32 and a composite internal wall 33 forming a tank.
  • the internal wall 33 has the same structure as the internal wall already described with reference to FIG. 1.
  • the concrete plug 34 has a metal coating 35 in the form of a plate.
  • the container 31 has a flat annular element 36 which forms a seat for the stopper.
  • the edge of the covering 35 and the outer edge of the annular element 36 protrude towards the external lateral surface of the container.
  • the stopper 34 is provided with a recess 37a extending over its entire periphery and the casing 32 of the container is provided with a corresponding element 37b at the upper end of its external side wall.
  • the recesses 37a, 37b form, when the stopper is placed on the container, a groove 37 into which the edges of the metal coating 35 of the stopper and of the annular element 36 of the container open.
  • Said edges constitute respective connection means of the covering 35 and of the annular element 36. They are connected by a continuous weld bead 38.
  • the plug 34 is provided with at least two channels 39 which connect the groove 37 to the upper face of the plug 34.
  • the channels 39 of which are intended for filling sage of the throat 3 by a mortar (not shown) and the evacuation of the air therefrom.
  • the groove 37 must be closed using a formwork (not shown) after the application of the weld bead 38, which allows the filling of the throat and the protection of the weld bead.
  • the stopper 34 is preferably provided with a centering rim 40 disposed on its face facing the container 31.
  • the centering rim 40 cooperates with the internal edge of the annular element 36 of the container 31 for the establishment of the stopper 34 on the container.
  • the annular element 36 is, as in the embodiment already described, preferably provided with a re-entrant axial flange 41 delimiting the opening of the container 31 and forming an anti-overflow member cooperating with the centering rim 40.
  • the container 31 comprises a ring 42 of heavy material forming a shield compensating for the reduction in thickness of the wall of the container 31 and of the stopper 34 due to the presence of the groove 37.
  • the ring 42 constitutes an extension of the shield of the composite internal wall 33 by forming a flange facing the interior of the container.
  • FIG. 4 is a partial sectional view showing a second embodiment of the invention.
  • the container consists of a container 43 closed by a plug 44.
  • the container has an envelope 45 and a composite internal wall 46 forming a tank.
  • the internal wall 46 has the same structure as that described with reference to FIG. 1.
  • the cap is provided with a metallic coating 47 forming connecting means intended to cooperate with means for connecting the container constituted by an annular element 48 soli daire of the tank 46 and which further forms a seat for the cap.
  • the metal coating 47 is bowl-shaped and provided with a peripheral flange 49.
  • the side wall 47a of the bowl 47 forms a centering member when the plug is placed on the container.
  • the stopper 44 and the casing 45 delimit, when the stopper is put in place, an annular groove 50 opening towards the top of the container.
  • the connection means between the plug 44 and the container 43 are arranged at the bottom of the groove 50.
  • the flange 49 is provided at its periphery with regularly spaced holes 51 disposed opposite corresponding holes 52 formed in the annular element 48.
  • Assembly means are constituted by bolts 53 arranged so as to cooperate with nuts 54 through said holes 51, 52 for sealing the container.
  • a seal 55 is preferably mounted between the facing faces of the metal covering 47 of the plug 44 and of the annular element 48 of the container 43.
  • a metal ring 56 identical to that already described with reference to FIG. 3 extends radially inside the container 43.
  • the ring 56 is connected to a re-entrant axial flange 57 delimiting the opening of the container and forming an anti-overflow device.
  • the groove 50 communicates with the external lateral wall of the casing 45 by radial grooves 58 forming weirs regularly disposed at the open end of the latter.
  • FIG. 5 is a partial sectional view showing a third embodiment of the invention tion.
  • the container consists of a container 59 closed by a plug 60.
  • the container 59 comprises an envelope 61 and a composite internal wall 62 forming a tank.
  • the internal wall 62 has the same structure as that described with reference to FIG. 1.
  • the cap 60 is provided with a metallic coating 63 forming connection means intended to cooperate with connection means of the container 59 constituted by an annular element 64 integral with the tank 62.
  • the annular element 64 is in this case advantageously constituted by a radial extension of the composite internal wall 62. This annular element also forms a seat for the plug.
  • the metal coating 63 of the plug 60 is cup-shaped.
  • the side wall 63a of said bowl is cylindrical and forms a centering member when the plug 60 is placed on the container 59.
  • the peripheral part of the metal coating 63 forms a flange 65.
  • the container 59 is provided with retaining members 66 regularly arranged on the envelope 61 and extending radially towards the interior of the container.
  • the retaining members 66 are intended to cooperate with the upper face of the flange 65.
  • the flange 65 of the metal covering 63 is provided with cutouts 67 complementary to the retaining members 66 so as to allow the plug 60 to come into abutment against the seat .
  • Stop members 68 are arranged on the upper face of the flange 65.
  • the stop members 68 are intended to come into abutment against the retaining members 66 of the container 59 by angular displacement of the plug 60 relative to the latter.
  • the flange 65 and the retaining members 66 thus form a bayonet socket which constitutes kills the means of connection between the stopper and the container.
  • a seal 69 is preferably mounted between the facing faces of the metal coating 64 of the plug 60 and of the annular element 64 of the container 59.
  • a groove 70 is formed between the internal wall of the casing 61 and the side wall of the plug 60.
  • the groove 70 is filled with a mortar (not shown) after the closure of the plug.
  • the groove 70 communicates with the external lateral wall of the casing 61 by radial grooves 71 forming weirs regularly arranged at the open end of the latter.
  • the annular element 64 further comprises a re-entrant axial collar 72 delimiting the opening of the container and forming an anti-overflow member.
  • the flange 65 of the plug 60 can advantageously comprise on its upper surface portions forming corners (not shown) cooperating with the corresponding retaining members 66 to lock the plug in its closed position.
  • the present invention thus allows the containers to be plugged quickly and safely. It also ensures a good quality of the seal over time between the cap and the container.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Processing Of Solid Wastes (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Closures For Containers (AREA)
  • Centrifugal Separators (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Refuse Receptacles (AREA)
  • Measurement Of Radiation (AREA)
  • Refuse Collection And Transfer (AREA)

Abstract

The container consists of a receptacle (2) and a plug (3), the receptacle comprising a concrete outer enclosure (4) and a composite inner wall (5) both together constituting a vessel intended to contain the waste while making it possible to absorb the dimensional changes of the enclosure with time and to insulate the enclosure thermally from the interior of the vessel. The plug (3) is a prefabricated concrete plug comprising a metal cladding (20). The receptacle (2) is provided with an annular member (15) integrally attached to the vessel and resting on the enclosure (4) to form a seat for the plug (3). Lateral parts (21) of the cladding (20) and (17) of the annular member (15) are adjacent and project into a groove (23) arranged on the upper face of the container. The edges of these lateral parts are joined, for example by welding. The container is suitable for the transport and storage of weakly or moderately radioactive solidified waste. <IMAGE>

Description

L'invention concerne les conteneurs de sto­ckage de déchets radioactifs, plus particulièrement adaptés au stockage de déchets solidifiés faiblement et moyennement radioactifs des sites nucléaires.The invention relates to storage containers for radioactive waste, more particularly suitable for the storage of weakly and moderately radioactive solidified waste from nuclear sites.

Les conteneurs concernés sont des conteneurs en béton et les déchets sont notamment constitués par des déchets dits de procédé tels que des filtres, des concentrats d'évaporateur et des résines échangeuses d'ions usées. Les conteneurs en béton sont de rigueur pour le transport et le stockage de tels déchets ra­dioactifs dès que la radioactivité mesurée dépasse 200 mrem/h.The containers concerned are concrete containers and the waste consists in particular of so-called process waste such as filters, evaporator concentrates and used ion exchange resins. Concrete containers are essential for the transport and storage of such radioactive waste as soon as the radioactivity measured exceeds 200 mrem / h.

Les déchets liquides sont versés dans les conteneurs et ensuite conditionnés en vue de leur so­lidification.Liquid waste is poured into containers and then conditioned for solidification.

Les conteneurs de stockage doivent être conçus de façon à offrir un volume utile optimal tout en garantissant la protection biologique dans le temps.Storage containers should be designed to provide optimal usable volume while ensuring biological protection over time.

Les conteneurs connus sont constitués d'un récipient fermé par un bouchon. Le récipient comporte une coque ou enveloppe en béton et une cuve intérieure métallique dont la paroi comprend, si besoin est, une couche de plomb constituant un blindage. Le bouchon est un bouchon, le plus souvent en béton, coulé sur place. Les bouchons en béton coulés sur place présen­tent parfois une certaine fissuration due aux varia­tions dimensionnelles du béton dans le temps et ils sont d'une qualité variable et difficile à contrôler. D'autres bouchons connus sont constitués par des billes de plomb noyées dans un mélange de brai et de résine époxy. Cette solution offre une meilleure pro­tection contre les radiations, mais elle est difficile et coûteuse à réaliser.The known containers consist of a container closed by a stopper. The container comprises a concrete shell or envelope and an inner metal tank, the wall of which comprises, if necessary, a layer of lead constituting a shield. The plug is a plug, most often made of concrete, poured on site. Concrete plugs poured in situ sometimes show some cracking due to the dimensional variations of the concrete over time and they are of variable quality and difficult to control. Other known plugs consist of lead beads embedded in a mixture of pitch and epoxy resin. This solution offers better protection against radiation, but it is difficult and expensive to carry out.

L'invention a pour but d'obvier à ces incon­vénients en proposant un conteneur permettant un bou­chage plus rapide et plus sûr à l'aide d'un bouchon dont la qualité peut être contrôlée préalablement.The object of the invention is to obviate these drawbacks by proposing a container allowing faster and safer closure with the aid of a stopper, the quality of which can be checked beforehand.

L'invention a pour objet un conteneur de stockage de déchets radioactifs, plus particulièrement adapté au stockage de déchets solidifiés faiblement ou moyennement radioactifs, constitué d'un récipient et d'un bouchon, le récipient comportant une enveloppe externe en béton et une paroi interne composite for­mant tous deux cuve destinée à contenir les déchets tout en permettant d'absorber les variations dimen­sionnelles dans le temps de l'enveloppe, et d'isoler thermiquement l'enveloppe de l'intérieur de la cuve et, en coopération avec celle-ci, à confiner les radiations à l'intérieur du conteneur, le récipient comportant en outre un siège pour le bouchon et des moyens de liaison destinés à coopérer avec des moyens de liaison du bouchon, caractérisé en ce que le bou­chon est un bouchon préfabriqué en béton.The subject of the invention is a container for storing radioactive waste, more particularly suitable for storing weakly or moderately radioactive solidified waste, consisting of a container and a plug, the container comprising an external concrete envelope and an internal wall. composite forming both tanks intended to contain the waste while making it possible to absorb dimensional variations over time of the envelope, and to thermally insulate the envelope from the interior of the tank and, in cooperation with the latter , to confine the radiation inside the container, the container further comprising a seat for the plug and connecting means intended to cooperate with means for connecting the plug, characterized in that the plug is a prefabricated concrete plug .

L'utilisation de l'invention permet, en outre, une moindre exigence en qualification de per­sonnel exploitant, ce qui présente un intérêt, notam­ment dans les installations exportées (Afrique du Sud, Corée du Sud, Chine Populaire, ...).The use of the invention allows, in addition, a lower requirement in qualification of operating personnel, which is of interest, particularly in exported installations (South Africa, South Korea, People's China, ...).

Selon d'autres caractéristiques de l'inven­tion :
- le bouchon comporte un revêtement métalli­que dont le bord constitue lesdits moyens de liaison du bouchon et dont la face tournée vers la cuve déli­mite avec celle-ci le volume intérieur du conteneur ; le récipient est pourvu d'un élément annulaire soli­daire de la cuve et en appui sur l'enveloppe pour for­mer le siège pour le bouchon ; le bord externe de l'élément annulaire constitue les moyens de liaison du récipient ; les bords du revêtement du bouchon et de l'élément annulaire sont, après la mise en place du bouchon sur le siège, juxtaposés et font saillie vers l'extérieur du conteneur.
- les bords sont reliés ensemble de façon étanche par un cordon continu de soudure ou un sertis­sage continu.
- Le revêtement métallique est en forme de cuvette ; l'élément annulaire comporte une âme radiale et une jupe dirigée vers le haut ; les bords de la cu­vette et de la jupe font saillie vers le haut du conteneur.
- le bouchon est pourvu d'un évidement s'é­tendant sur toute la périphérie de sa face supérieu­re ; l'enveloppe du récipient est pourvue d'un évi­dement correspondant à l'extrémité de sa paroi interne en regard du bouchon ; les évidements forment, lorsque le bouchon est mis en place sur le récipient, une gor­ge dans laquelle débouchent les bords de la cuvette et de la jupe.
- la paroi latérale du revêtement du bouchon et la jupe de l'élément annulaire de récipient sont évasées afin d'assurer le centrage et de contribuer à l'étanchéité par contact de la paroi latérale du revê­tement du bouchon sur la jupe.According to other characteristics of the invention:
- The stopper has a metallic coating, the edge of which constitutes said means for connecting the stopper and whose face facing the tank defines the interior volume of the container therewith; the container is provided with an annular element integral with the tank and bearing on the envelope to form the seat for the stopper; the outer edge of the annular element constitutes the means for connecting the container; the edges of the covering of the plug and of the annular element are, after the fitting of the plug on the seat, juxtaposed and project towards the outside of the container.
- The edges are tightly connected together by a continuous weld bead or a continuous crimp.
- The metal coating is bowl-shaped; the annular element comprises a radial core and a skirt directed upwards; the edges of the bowl and the skirt protrude towards the top of the container.
- The plug is provided with a recess extending over the entire periphery of its upper face; the envelope of the container is provided with a recess corresponding to the end of its internal wall opposite the stopper; the recesses form, when the stopper is placed on the container, a groove into which the edges of the bowl and the skirt open.
- The side wall of the cap coating and the skirt of the annular container element are flared in order to ensure centering and to contribute to the sealing by contact of the side wall of the coating of the cap on the skirt.

L'invention sera maintenant décrite plus en détails en référence aux dessins annexés sur les­quels :

  • La figure 1 est une vue schématique latéra­le, partiellement en coupe, d'un conteneur suivant un premier mode de réalisation de l'invention.
  • La figure 2 est une vue de dessus du conte­neur de la figure 1.
  • La figure 3 est une vue en coupe partielle d'un conteneur suivant une variante du premier mode de réalisation.
  • La figure 4 est une vue en coupe partielle d'un conteneur suivant un deuxième mode de réalisation de l'invention ; et
  • La figure 5 est une vue en coupe partielle d'un conteneur suivant un troisième mode de réalisa­tion de l'invention.
The invention will now be described in more detail with reference to the accompanying drawings in which:
  • Figure 1 is a schematic side view, partially in section, of a container according to a first embodiment of the invention.
  • Figure 2 is a top view of the container of Figure 1.
  • Figure 3 is a partial sectional view of a container according to a variant of the first embodiment.
  • Figure 4 is a partial sectional view of a container according to a second embodiment of the invention; and
  • Figure 5 is a partial sectional view of a container according to a third embodiment of the invention.

Les figures 1 et 2 montrent un premier mode de réalisation de l'invention. Le conteneur 1 est constitué d'un récipient 2 hermétiquement fermé à l'aide d'un bouchon préfabriqué 3 en béton.Figures 1 and 2 show a first embodiment of the invention. The container 1 consists of a container 2 hermetically closed using a prefabricated concrete plug 3.

Le récipient comporte une enveloppe externe 4 en béton et une paroi interne composite 5 formant cuve. La paroi interne est de forme cylindrique et composée d'éléments différents disposés dans l'ordre suivant, vu de l'intérieur vers l'extérieur de la fi­gure 1 : d'abord un premier élément en acier 6 formant la face interne du récipient, suivi d'un élément en matériau lourd tel que du plomb 7 formant blindage contre la radiation. Ce blindage est recouvert par un deuxième élément en acier 8 suivi d'un élément souple 9.The container has an outer casing 4 of concrete and a composite inner wall 5 forming a tank. The internal wall is of cylindrical shape and composed of different elements arranged in the following order, seen from the inside to the outside of FIG. 1: first a first steel element 6 forming the internal face of the container, followed by an element made of heavy material such as lead 7 forming a shield against radiation. This shielding is covered by a second steel element 8 followed by a flexible element 9.

L'élément souple 9 a pour fonction d'absor­ber les variations dimensionnelles dans le temps de l'enveloppe 2, ce qui est primordial pour éviter des fissures dans le béton provoquées par des tensions dans celui-ci lors de son retrait. L'élément souple 9 doit aussi servir comme isolant thermique lors du remplissage du récipient 2, étant donné que les dé­chets peuvent être versés dans le récipient à l'état chaud et subir une élévation de température en cours de solidification, ce qui provoque des sollicitations thermiques dans le béton. Il est donc souhaitable d'atténuer ces sollicitations en disposant un élément thermo-isolant entre la cuve et l'enveloppe en béton.The flexible element 9 has the function of absorbing the dimensional variations over time of the envelope 2, which is essential to avoid cracks in the concrete caused by tensions in the latter during its removal. The flexible element 9 must also serve as thermal insulation when filling the container 2, since the waste can be poured into the container in the state hot and undergo a temperature rise during solidification, which causes thermal stresses in the concrete. It is therefore desirable to mitigate these stresses by having a heat-insulating element between the tank and the concrete envelope.

L'élément souple 9 est de préférence cons­titué de polystyrène expansé.The flexible element 9 is preferably made of expanded polystyrene.

L'élément doit être protégé contre l'humidi­té contenue dans le béton et cette protection peut être assurée par une couche 10 d'une matière appro­priée, par exemple le polyane, appliquée sur la face externe de l'élément souple 9 afin d'empêcher que celui-ci soit en contact direct avec l'enveloppe 4 en béton.The element must be protected against the humidity contained in the concrete and this protection can be ensured by a layer 10 of an appropriate material, for example polyane, applied to the external face of the flexible element 9 in order to prevent that it is in direct contact with the concrete casing 4.

Un agitateur 13 peut être utilisé pour le conditionnement des déchets en vue de leur solidifi­cation et il reste ensuite avec les déchets dans le conteneur. Dans ce cas, un sabot 11 formant support pour l'axe 12 de l'agitateur 13 à pales 14 est fixé au centre du fond de la cuve 5.An agitator 13 can be used for packaging the waste for solidification and it then remains with the waste in the container. In this case, a shoe 11 forming a support for the axis 12 of the agitator 13 with blades 14 is fixed to the center of the bottom of the tank 5.

Le récipient 2 est pourvu d'un élément annu­laire 15 solidaire de l'extrémité ouverte de la cuve 5 et destiné à former un siège pour le bouchon 3.The container 2 is provided with an annular element 15 integral with the open end of the tank 5 and intended to form a seat for the plug 3.

L'élément annulaire 15 comporte une âme ra­diale 16, une jupe 17 dirigée vers le haut et une col­lerette axiale rentrante 18 qui forme un organe anti-­débordement lors de l'agitation des déchets en vue de leur conditionnement et qui délimite le volume utile du conteneur.The annular element 15 comprises a radial core 16, a skirt 17 directed upwards and an axial re-entrant collar 18 which forms an anti-overflow member during the agitation of the waste with a view to its conditioning and which delimits the useful volume of the container.

Le récipient 2 est, sur toute sa périphérie, pourvu d'une gorge 19 destinée à recevoir une ceinture de manutention du récipient vide ou du conteneur rem­pli et fermé.The container 2 is, over its entire periphery, provided with a groove 19 intended to receive a belt for handling the empty container or the filled and closed container.

Le bouchon en béton 3 est pourvu d'un revê­tement métallique 20 dont la face tournée vers la cuve 5 délimite avec celle-ci le volume intérieur du conte­neur. Dans le premier mode de réalisation illustré sur la figure 1, le revêtement métallique 20 est en forme de cuvette.The concrete plug 3 is provided with a metal coating 20 whose face facing the tank 5 defines therewith the interior volume of the container. In the first embodiment illustrated in Figure 1, the metal coating 20 is in the form of a bowl.

La paroi latérale 21 de la cuvette 20 coopè­re, lorsque le bouchon 3 est en place sur le récipient 2, avec la jupe 17 de l'élément annulaire 15 du réci­pient 2 de façon que leurs bords respectifs forment des moyens de liaison du bouchon avec le récipient. Les bords sont juxtaposés et assemblés sur toute leur longueur par un cordon de soudure continu 22. Le cor­don de soudure est avantageusement appliqué à l'aide d'un robot de soudage, ce qui permet d'automatiser tout le processus de bouchage. Ce procédé d'assemblage a aussi l'avantage d'assurer un joint absolument étan­che entre les éléments.The side wall 21 of the bowl 20 cooperates, when the cap 3 is in place on the container 2, with the skirt 17 of the annular element 15 of the container 2 so that their respective edges form means of connection of the cap with the container. The edges are juxtaposed and assembled over their entire length by a continuous weld bead 22. The weld bead is advantageously applied using a welding robot, which makes it possible to automate the entire sealing process. This assembly process also has the advantage of ensuring an absolutely tight seal between the elements.

Au lieu d'appliquer un cordon de soudure pour assembler le bouchon et le récipient, il est pos­sible d'effectuer un sertissage continu assurant l'as­semblage étanche des éléments.Instead of applying a weld bead to assemble the plug and the container, it is possible to carry out a continuous crimping ensuring the tight assembly of the elements.

La paroi latérale 21 de la cuvette 20 et la jupe 17 de l'élément annulaire 15 ont de préférence une forme évasée. La forme évasée assure le centrage du bouchon 3 lors de la mise en place de celui-ci sur le récipient 2. La jupe 17 de forme évasée forme une surface d'appui contre laquelle repose la paroi laté­rale 21 du revêtement 20 également évasée, ce qui contribue aussi à l'étanchéité entre le bouchon 3 et le récipient 2.The side wall 21 of the bowl 20 and the skirt 17 of the annular element 15 preferably have a flared shape. The flared shape ensures the centering of the plug 3 when it is placed on the container 2. The skirt 17 of flared shape forms a bearing surface against which the side wall 21 of the covering 20 also flared rests, this which also contributes to sealing between the plug 3 and the container 2.

La paroi latérale 21 de la cuvette 20 et la jupe 17 de l'élément annulaire 15 peuvent aussi être de forme cylindrique, ce qui nécessite alors un cer­ tain jeu entre ces éléments pour faciliter la mise en place du bouchon.The side wall 21 of the bowl 20 and the skirt 17 of the annular element 15 can also be of cylindrical shape, which then requires a cer tain play between these elements to facilitate the installation of the plug.

L'enveloppe externe 4 en béton dépasse en hauteur la jupe 17 de l'élément annulaire. La face ouverte du bouchon 3 affleure de préférence ou dépasse légèrement la face d'extrémité supérieure de l'enve­loppe 4, lorsque le bouchon est mis en place sur son siège, afin de présenter une surface aussi homogène que possible pour faciliter l'empilement des conte­neurs lors de leur stockage.The outer concrete casing 4 projects in height above the skirt 17 of the annular element. The open face of the plug 3 preferably flush or slightly exceeds the upper end face of the casing 4, when the plug is placed on its seat, in order to present a surface as homogeneous as possible to facilitate the stacking of the containers during storage.

L'enveloppe 4 du récipient 2 est, à l'extré­mité de sa paroi interne qui est en regard du bouchon 3, pourvue d'un évidement continu 23a. Le bouchon est pourvu d'un évidement correspondant 23b s'étendant sur toute la périphérie de sa face supérieure. Les évide­ments 23a, 23b forment, lorsque le bouchon est mis en place sur le récipient, une gorge 23 dans laquelle dé­bouchent les bords de la cuvette 20 et de la jupe 17.The envelope 4 of the container 2 is, at the end of its internal wall which faces the plug 3, provided with a continuous recess 23a. The plug is provided with a corresponding recess 23b extending over the entire periphery of its upper face. The recesses 23a, 23b form, when the cap is placed on the container, a groove 23 into which the edges of the bowl 20 and of the skirt 17 open.

La gorge 23 est remplie d'un mortier 24 pour protéger le cordon de soudure 22.The groove 23 is filled with a mortar 24 to protect the weld bead 22.

La gorge 23 communique avec la paroi latéra­le externe de l'enveloppe 4 par des rainures radiales 26 formant déversoirs régulièrement disposées à l'ex­trémité ouverte de celle-ci.The groove 23 communicates with the external lateral wall of the casing 4 by radial grooves 26 forming weirs regularly disposed at the open end of the latter.

Le récipient est de préférence pourvu d'un anneau 25 en matériau lourd de même nature que le blindage 7 formant un blindage de compensation de la réduction d'épaisseur de la paroi du récipient et du bouchon dû à la présence de ladite gorge 23. L'anneau 25 est disposé à l'intérieur du récipient 2 et relié à l'élément annulaire 15 de celui-ci. L'anneau 25 peut être une pièce rapportée comme le montre la figure 1 ou faire partie du blindage 7 de la paroi interne 5.The container is preferably provided with a ring 25 of heavy material of the same kind as the shield 7 forming a shield compensating for the reduction in thickness of the wall of the container and of the plug due to the presence of said groove 23. L 'ring 25 is disposed inside the container 2 and connected to the annular element 15 thereof. The ring 25 can be an insert as shown in FIG. 1 or be part of the shield 7 of the internal wall 5.

Le bouchon 3 est muni de deux douilles ta­raudées 27 disposées dans des évidements opposés 28 sur sa face supérieure. Les douilles sont destinées à coopérer avec des vis 29 solidaires d'anneaux de leva­ge 30 mis en place uniquement pendant la manutention du bouchon.The plug 3 is provided with two threaded sockets 27 arranged in opposite recesses 28 on its upper face. The sockets are intended to cooperate with screws 29 integral with lifting rings 30 put in place only during the handling of the plug.

La figure 3 est une vue partielle en coupe d'une variante du premier mode de réalisation de l'in­vention. Le récipient 31 est constitué d'une enveloppe 32 en béton et d'une paroi interne composite 33 for­mant cuve. La paroi interne 33 a la même structure que la paroi interne déjà décrite en référence à la figure 1.Figure 3 is a partial sectional view of a variant of the first embodiment of the invention. The container 31 consists of a concrete casing 32 and a composite internal wall 33 forming a tank. The internal wall 33 has the same structure as the internal wall already described with reference to FIG. 1.

Le bouchon 34 en béton comporte un revête­ment métallique 35 en forme de plaque. Le récipient 31 comporte un élément annulaire plat 36 qui forme un siège pour le bouchon.The concrete plug 34 has a metal coating 35 in the form of a plate. The container 31 has a flat annular element 36 which forms a seat for the stopper.

Le bord du revêtement 35 et le bord exté­rieur de l'élément annulaire 36 font saillie vers la surface latérale externe du conteneur. Le bouchon 34 est pourvu d'un évidement 37a s'étendant sur toute sa périphérie et l'enveloppe 32 du récipient est pourvue d'un élément correspondant 37b à l'extrémité supérieu­re de sa paroi latérale externe. Les évidements 37a, 37b forment, lorsque le bouchon est mis en place sur le récipient, une gorge 37 dans laquelle débouchent les bords du revêtement métallique 35 du bouchon et de l'élément annulaire 36 du récipient. Lesdits bords constituent des moyens de liaison respectifs du revê­tement 35 et de l'élément annulaire 36. Ils sont re­liés par un cordon de soudure continu 38.The edge of the covering 35 and the outer edge of the annular element 36 protrude towards the external lateral surface of the container. The stopper 34 is provided with a recess 37a extending over its entire periphery and the casing 32 of the container is provided with a corresponding element 37b at the upper end of its external side wall. The recesses 37a, 37b form, when the stopper is placed on the container, a groove 37 into which the edges of the metal coating 35 of the stopper and of the annular element 36 of the container open. Said edges constitute respective connection means of the covering 35 and of the annular element 36. They are connected by a continuous weld bead 38.

Le bouchon 34 est pourvu d'au moins deux canaux 39 qui relient la gorge 37 à la face supérieure du bouchon 34. Les canaux 39 dont destinés au remplis­ sage de la gorge 3 par un mortier (non représenté) et à l'évacuation de l'air de celle-ci. La gorge 37 doit être fermée à l'aide d'un coffrage (non représenté) après l'application du cordon de soudure 38, ce qui permet le remplissage de la gorge et la protection du cordon de soudure.The plug 34 is provided with at least two channels 39 which connect the groove 37 to the upper face of the plug 34. The channels 39 of which are intended for filling sage of the throat 3 by a mortar (not shown) and the evacuation of the air therefrom. The groove 37 must be closed using a formwork (not shown) after the application of the weld bead 38, which allows the filling of the throat and the protection of the weld bead.

Le bouchon 34 est de préférence pourvu d'un rebord de centrage 40 disposé sur sa face tournée vers le récipient 31. Le rebord de centrage 40 coopère avec le bord interne de l'élément annulaire 36 du récipient 31 pour la mise en place du bouchon 34 sur le réci­pient.The stopper 34 is preferably provided with a centering rim 40 disposed on its face facing the container 31. The centering rim 40 cooperates with the internal edge of the annular element 36 of the container 31 for the establishment of the stopper 34 on the container.

L'élément annulaire 36 est, comme dans le mode de réalisation déjà décrit, de préférence pourvu d'une collerette axiale rentrante 41 délimitant l'ou­verture du récipient 31 et formant un organe anti-­débordement coopérant avec le rebord de centrage 40.The annular element 36 is, as in the embodiment already described, preferably provided with a re-entrant axial flange 41 delimiting the opening of the container 31 and forming an anti-overflow member cooperating with the centering rim 40.

Le récipient 31 comporte un anneau 42 en ma­tériau lourd formant un blindage de compensation de la réduction d'épaisseur de la paroi du récipient 31 et du bouchon 34 dû à la présence de la gorge 37. L'an­neau 42 constitue une prolongation du blindage de la paroi interne composite 33 en formant une bride tournée vers l'intérieur du récipient.The container 31 comprises a ring 42 of heavy material forming a shield compensating for the reduction in thickness of the wall of the container 31 and of the stopper 34 due to the presence of the groove 37. The ring 42 constitutes an extension of the shield of the composite internal wall 33 by forming a flange facing the interior of the container.

La figure 4 est une vue partielle en coupe montrant un second mode de réalisation de l'invention. Le conteneur est constitué d'un récipient 43 fermé par un bouchon 44. Le récipient comporte une enveloppe 45 et une paroi interne composite 46 formant cuve. La paroi interne 46 a la même structure que celle décrite en référence à la figure 1. Le bouchon est pourvu d'un revêtement métallique 47 formant des moyens de liaison destinés à coopérer avec des moyens de liaison du ré­cipient constitués par un élément annulaire 48 soli­ daire de la cuve 46 et qui de plus forme un siège pour le bouchon.Figure 4 is a partial sectional view showing a second embodiment of the invention. The container consists of a container 43 closed by a plug 44. The container has an envelope 45 and a composite internal wall 46 forming a tank. The internal wall 46 has the same structure as that described with reference to FIG. 1. The cap is provided with a metallic coating 47 forming connecting means intended to cooperate with means for connecting the container constituted by an annular element 48 soli daire of the tank 46 and which further forms a seat for the cap.

Le revêtement métallique 47 est en forme de cuvette et pourvu d'une bride périphérique 49. La pa­roi latérale 47a de la cuvette 47 forme un organe de centrage lors de la mise en place du bouchon sur le récipient. Le bouchon 44 et l'enveloppe 45 délimitent, lorsque le bouchon est mis en place, une gorge annu­laire 50 débouchant vers le haut du conteneur. Les moyens de liaison entre le bouchon 44 et le récipient 43 sont disposés au fond de la gorge 50.The metal coating 47 is bowl-shaped and provided with a peripheral flange 49. The side wall 47a of the bowl 47 forms a centering member when the plug is placed on the container. The stopper 44 and the casing 45 delimit, when the stopper is put in place, an annular groove 50 opening towards the top of the container. The connection means between the plug 44 and the container 43 are arranged at the bottom of the groove 50.

La bride 49 est pourvue à sa périphérie de trous 51 régulièrement espacés disposés en regard de trous correspondants 52 ménagés dans l'élément annu­laire 48. Des moyens d'assemblage sont constitués par des boulons 53 disposés de façon à coopérer avec des écrous 54 à travers lesdits trous 51, 52 pour la fer­meture étanche du conteneur.The flange 49 is provided at its periphery with regularly spaced holes 51 disposed opposite corresponding holes 52 formed in the annular element 48. Assembly means are constituted by bolts 53 arranged so as to cooperate with nuts 54 through said holes 51, 52 for sealing the container.

Un joint d'étanchéité 55 est de préférence monté entre les faces en regard du revêtement métal­lique 47 du bouchon 44 et de l'élément annulaire 48 du récipient 43.A seal 55 is preferably mounted between the facing faces of the metal covering 47 of the plug 44 and of the annular element 48 of the container 43.

Un anneau métallique 56 identique à celui déjà décrit en référence à la figure 3 s'étend radia­lement à l'intérieur du récipient 43. Dans ce cas l'anneau 56 est relié à une collerette axiale rentran­te 57 délimitant l'ouverture du récipient et formant un organe anti-débordement.A metal ring 56 identical to that already described with reference to FIG. 3 extends radially inside the container 43. In this case the ring 56 is connected to a re-entrant axial flange 57 delimiting the opening of the container and forming an anti-overflow device.

La gorge 50 communique avec la paroi latéra­le externe de l'enveloppe 45 par des rainures radiales 58 formant déversoirs régulièrement disposés à l'ex­trémité ouverte de celle-ci.The groove 50 communicates with the external lateral wall of the casing 45 by radial grooves 58 forming weirs regularly disposed at the open end of the latter.

La figure 5 est une vue partielle en coupe montrant un troisième mode de réalisation de l'inven­ tion. Le conteneur est constitué d'un récipient 59 fermé par un bouchon 60. Le récipient 59 comporte une enveloppe 61 et une paroi interne composite 62 formant cuve. La paroi interne 62 a la même structure que cel­le décrite en référence à la figure 1. Le bouchon 60 est pourvu d'un revêtement métallique 63 formant des moyens de liaison destinés à coopérer avec des moyens de liaison du récipient 59 constitués par un élément annulaire 64 solidaire de la cuve 62. L'élément annu­laire 64 est dans ce cas avantageusement constitué par un prolongement radial de la paroi interne composite 62. Cet élément annulaire forme de plus un siège pour le bouchon.Figure 5 is a partial sectional view showing a third embodiment of the invention tion. The container consists of a container 59 closed by a plug 60. The container 59 comprises an envelope 61 and a composite internal wall 62 forming a tank. The internal wall 62 has the same structure as that described with reference to FIG. 1. The cap 60 is provided with a metallic coating 63 forming connection means intended to cooperate with connection means of the container 59 constituted by an annular element 64 integral with the tank 62. The annular element 64 is in this case advantageously constituted by a radial extension of the composite internal wall 62. This annular element also forms a seat for the plug.

Le revêtement métallique 63 du bouchon 60 est en forme de cuvette. La paroi latérale 63a de ladite cuvette est cylindrique et forme un organe de centrage lors de la mise en place du bouchon 60 sur le récipient 59.The metal coating 63 of the plug 60 is cup-shaped. The side wall 63a of said bowl is cylindrical and forms a centering member when the plug 60 is placed on the container 59.

La partie périphérique du revêtement métal­lique 63 forme une bride 65. Le récipient 59 est pour­vi d'organes de retenue 66 régulièrement disposés sur l'enveloppe 61 et s'étendant radialement vers l'inté­rieur du conteneur. Les organes de retenue 66 sont destinés à coopérer avec la face supérieure de la bri­de 65. La bride 65 du revêtement métallique 63 est pourvue de découpes 67 complémentaires des organes de retenue 66 de façon à permettre au bouchon 60 de venir en appui contre le siège. Des organes de butées 68 sont disposés sur la face supérieure de la bride 65. Les organes de butées 68 sont destinées à venir en bu­tée contre les organes de retenue 66 du récipient 59 par déplacement angulaire du bouchon 60 par rapport à celui-ci. La bride 65 et les organes de retenue 66 forment ainsi un emboitement à baïonnette qui consti­ tue les moyens de liaison entre le bouchon et le réci­pient.The peripheral part of the metal coating 63 forms a flange 65. The container 59 is provided with retaining members 66 regularly arranged on the envelope 61 and extending radially towards the interior of the container. The retaining members 66 are intended to cooperate with the upper face of the flange 65. The flange 65 of the metal covering 63 is provided with cutouts 67 complementary to the retaining members 66 so as to allow the plug 60 to come into abutment against the seat . Stop members 68 are arranged on the upper face of the flange 65. The stop members 68 are intended to come into abutment against the retaining members 66 of the container 59 by angular displacement of the plug 60 relative to the latter. The flange 65 and the retaining members 66 thus form a bayonet socket which constitutes kills the means of connection between the stopper and the container.

Comme dans le deuxième mode de réalisation un joint d'étanchéité 69 est de préférence monté entre les faces en regard du revêtement métallique 64 du bouchon 60 et de l'élément annulaire 64 du récipient 59.As in the second embodiment, a seal 69 is preferably mounted between the facing faces of the metal coating 64 of the plug 60 and of the annular element 64 of the container 59.

Une gorge 70 est formée entre la paroi in­terne de l'enveloppe 61 et la paroi latérale du bou­chon 60. La gorge 70 est remplie d'un mortier (non re­présenté) après la fermeture du bouchon. La gorge 70 communique avec la paroi latérale externe de l'enve­loppe 61 par des rainures radiales 71 formant déver­soirs régulièrement disposées à l'extrémité ouverte de celle-ci.A groove 70 is formed between the internal wall of the casing 61 and the side wall of the plug 60. The groove 70 is filled with a mortar (not shown) after the closure of the plug. The groove 70 communicates with the external lateral wall of the casing 61 by radial grooves 71 forming weirs regularly arranged at the open end of the latter.

L'élément annulaire 64 comprend en outre une collerette axiale rentrante 72 délimitant l'ouverture du récipient et formant un organe anti-débordement.The annular element 64 further comprises a re-entrant axial collar 72 delimiting the opening of the container and forming an anti-overflow member.

La bride 65 du bouchon 60 selon ce mode de réalisation peut avantageusement comporter sur sa sur­face supérieure des portions formant coins (non repré­sentées) coopérant avec les organes de retenue corres­pondants 66 pour bloquer le bouchon dans sa position de fermeture.The flange 65 of the plug 60 according to this embodiment can advantageously comprise on its upper surface portions forming corners (not shown) cooperating with the corresponding retaining members 66 to lock the plug in its closed position.

La présente invention permet ainsi un bou­chage rapide et sûr des conteneurs. Elle assure aussi une bonne qualité de l'étanchéité dans le temps entre le bouchon et le récipient.The present invention thus allows the containers to be plugged quickly and safely. It also ensures a good quality of the seal over time between the cap and the container.

Claims (22)

1.- Conteneur de stockage de déchets radio­actifs, plus particulièrement adapté au stockage de déchets solidifiés faiblement ou moyennement radio­actifs, constitué d'un récipient (2 ; 31 ; 43 ; 59) et d'un bouchon (3 ; 34 ; 44 ; 60), le récipient compor­tant une enveloppe (4 ; 32 ; 45 ; 61) externe en béton et une paroi interne composite (5 ; 33 ; 46 ; 62) for­mant tous deux cuve destinée à contenir les déchets tout en permettant d'absorber les variations dimen­sionnelles dans le temps de l'enveloppe (4 ; 32 ; 45 ; 61) et d'isoler thermiquement l'enveloppe de l'inté­rieur de la cuve et, en coopération avec celle-ci, à confiner les radiations à l'intérieur du conteneur, le récipient comportant en outre un siège pour le bou­chon et des moyens de liaison (15; 36; 48; 66) desti­nés à coopérer avec des moyens de liaison (20; 35; 47; 63) du bouchon (3; 34; 44; 60), caractérisé en ce que le bouchon (3 ; 34 ; 44 ; 60) est un bouchon préfabri­qué en béton.1.- Radioactive waste storage container, more particularly suitable for the storage of weakly or moderately radioactive solidified waste, consisting of a container (2; 31; 43; 59) and a cap (3; 34; 44; 60 ), the container comprising an outer shell (4; 32; 45; 61) made of concrete and a composite inner wall (5; 33; 46; 62) both forming a tank intended to contain the waste while allowing variations to be absorbed dimensional over time of the envelope (4; 32; 45; 61) and to thermally isolate the envelope from the inside of the tank and, in cooperation with it, to confine the radiation inside the container, the container further comprising a seat for the stopper and connection means (15; 36; 48; 66) intended to cooperate with connection means (20; 35; 47; 63) of the stopper (3; 34; 44; 60), characterized in that the plug (3; 34; 44; 60) is a prefabricated concrete plug. 2.- Conteneur suivant la revendication 1, caractérisé en ce que le bouchon (3 ; 34) comporte un revêtement métallique (20 ; 35) dont le bord constitue lesdits moyens de liaison du bouchon et dont la face tournée vers la cuve délimite avec celle-ci le volume intérieur du conteneur, en ce que le récipient (2 ; 31) est pourvu d'un élément annulaire (15 ; 36) soli­daire de la cuve et en appui sur l'enveloppe (4 ; 32) pour former le siège pour le bouchon (3 ; 34), en ce que le bord extérieur de l'élément annulaire (15 ; 36) constitue les moyens de liaison du récipient, et en ce que, après la mise en place du bouchon sur le siège, lesdits bords du revêtement (20 ; 35) du bouchon (3 ; 34) et de l'élément annulaire (15 ; 36) du récipient (2 ; 31) sont juxtaposés et font saillie vers l'exté­rieur du conteneur.2.- container according to claim 1, characterized in that the stopper (3; 34) comprises a metallic coating (20; 35) whose edge constitutes said means for connecting the stopper and whose face facing the tank delimits with that -ci the interior volume of the container, in that the container (2; 31) is provided with an annular element (15; 36) integral with the tank and pressing on the envelope (4; 32) to form the seat for the stopper (3; 34), in that the outer edge of the annular element (15; 36) constitutes the means of connection of the container, and in that, after the fitting of the stopper on the seat, said edges of the covering (20; 35) of the cap (3; 34) and of the annular element (15; 36) of the container (2; 31) are juxtaposed and project towards the outside of the container. 3.- Conteneur suivant la revendication 2, caractérisé en ce que les bords sont reliés ensemble de façon étanche par un cordon continu (22 ; 38) de soudure ou par sertissage continu.3.- container according to claim 2, characterized in that the edges are connected together in a sealed manner by a continuous bead (22; 38) of solder or by continuous crimping. 4.- Conteneur suivant la revendication 3, caractérisé en ce que le revêtement métallique (20) est en forme de cuvette, en ce que l'élément annulaire (15) comporte une âme radiale (16) et une jupe (17) dirigée vers le haut, et en ce que les bords de la cuvette (20) et de la jupe (17) font saillie vers le haut du conteneur.4.- container according to claim 3, characterized in that the metal coating (20) is bowl-shaped, in that the annular element (15) comprises a radial core (16) and a skirt (17) directed towards the top, and in that the edges of the bowl (20) and the skirt (17) protrude towards the top of the container. 5.- Conteneur suivant la revendication 4, caractérisé en ce que le bouchon (3) est pourvu d'un évidement (23b) s'étendant sur toute la périphérie de sa face supérieure, en ce que l'enveloppe (4) du réci­pient (2) est pourvue d'un évidement correspondant (23a) à l'extrémité de sa paroi interne en regard du bouchon (3), et en ce que lesdits évidements (23a, 23b) forment, lorsque le bouchon (3) est mis en place sur le récipient (2), une gorge (23) dans laquelle débouchent les bords de la cuvette (20) et de la jupe (17).5.- container according to claim 4, characterized in that the plug (3) is provided with a recess (23b) extending over the entire periphery of its upper face, in that the envelope (4) of the container (2) is provided with a corresponding recess (23a) at the end of its internal wall opposite the plug (3), and in that said recesses (23a, 23b) form, when the plug (3) is put in place on the container (2), a groove (23) into which open the edges of the bowl (20) and the skirt (17). 6.- Conteneur suivant la revendication 4 ou 5, caractérisé en ce que la paroi latérale du revê­tement (20) du bouchon (3) et la jupe (17) de l'élé­ment annulaire (15) du récipient (2) sont de forme cy­lindrique.6.- container according to claim 4 or 5, characterized in that the side wall of the coating (20) of the plug (3) and the skirt (17) of the annular element (15) of the container (2) are of shape cylindrical. 7.- Conteneur suivant la revendication 4 ou 5, caractérisé en ce que la paroi latérale du revête­ment (20) du bouchon (3) et la jupe (17) de l'élément annulaire (15) du récipient (2) sont complémentaire­ment évasées.7.- container according to claim 4 or 5, characterized in that the side wall of the coating (20) of the plug (3) and the skirt (17) of the annular element (15) of the container (2) are additionally flared . 8.- Conteneur suivant la revendication 2 ou 3, caractérisé en ce que le revêtement métallique (35) du bouchon (34) est en forme de plaque, en ce que l'é­lément annulaire (36) du récipient est plat et en ce que le bord du revêtement (35) et le bord extérieur de l'élément annulaire (36) font saillie vers la surface latérale extérieure du conteneur.8.- container according to claim 2 or 3, characterized in that the metal coating (35) of the plug (34) is in the form of a plate, in that the annular element (36) of the container is flat and in that the edge of the covering (35) and the outer edge of the annular element (36) protrude towards the outer lateral surface of the container. 9.- Conteneur suivant la revendication 8, caractérisé en ce que le bouchon (34) est pourvu d'un évidement (37a) s'étendant sur toute sa périphérie, en ce que l'enveloppe (32) du récipient (31) est pourvue d'un évidement correspondant (37b) sur sa paroi laté­rale extérieure, et en ce que lesdits évidements (37a, 37b) forment, lorsque le bouchon (34) est mis en place sur le récipient (31), une gorge (37) dans laquelle débouchent les bords du revêtement métallique (35) du bouchon (34) et de l'élément annulaire (36) du réci­pient (31).9.- container according to claim 8, characterized in that the plug (34) is provided with a recess (37a) extending over its entire periphery, in that the envelope (32) of the container (31) is provided with a corresponding recess (37b) on its outer side wall, and in that said recesses (37a, 37b) form, when the stopper (34) is placed on the container (31), a groove (37) into which the edges of the metal covering (35) of the stopper (34) and of the annular element (36) of the container (31) open. 10.- Conteneur suivant la revendication 9, caractérisé en ce que la gorge (37) est reliée à la face supérieure du bouchon (34) par au moins deux ca­naux (39) destinés au remplissage de ladite gorge (37) par un mortier et à l'évacuation de l'air hors de celle-ci.10.- container according to claim 9, characterized in that the groove (37) is connected to the upper face of the plug (34) by at least two channels (39) intended for filling said groove (37) with a mortar and to the evacuation of air out of it. 11.- Conteneur suivant la revendication 1, caractérisé en ce que le bouchon (44 ; 60) comporte un revêtement métallique (47 ; 63) comprenant les moyens de liaison du bouchon et formant une bride périphéri­que (49 ; 65), la face du revêtement (47 ; 63) tournée vers la cuve (46 ; 62) délimitant avec celle-ci le vo­lume intérieur du conteneur, en ce que le récipient (43 ; 59) est pourvu d'un élément annulaire (48 ; 64) solidaire de la cuve (46 ; 62) et formant siège pour le bouchon (44 ; 60), et constituant de plus les moyens de liaison du récipient (43 ; 59), en ce que le bouchon (44 ; 60) et l'enveloppe (45 ; 61) du réci­pient (43 ; 59) délimitent, lorsque le bouchon (44 ; 60) est mis en place, une gorge annulaire (50 ; 70) débouchant vers le haut du conteneur, et en ce que les moyens de liaison entre le bouchon (44 ; 60) et le récipient (43 ; 59) sont disposés au fond de ladite gorge (50 ; 70).11.- container according to claim 1, characterized in that the plug (44; 60) comprises a metallic coating (47; 63) comprising the means for connecting the plug and forming a peripheral flange (49; 65), the face of the coating (47; 63) facing the tank (46; 62) defining therewith the interior volume of the container, in that the container (43; 59) is provided with an annular element (48; 64) integral with the tank (46; 62) and forming a seat for the plug (44; 60), and further constituting the means for connecting the container (43; 59), in that the cap (44; 60) and the envelope (45; 61) of the container (43; 59) delimit, when the cap (44; 60) is put in place, an annular groove (50; 70) opening towards the top of the container, and in that the connecting means between the stopper (44; 60) and the container (43; 59) are arranged at the bottom of said groove (50 ; 70). 12.- Conteneur suivant la revendication 11, caractérisé en ce que la bride (49) est pourvue à sa périphérie de trous (51) régulièrement espacés, dispo­sés en regard de trous (52) correspondants ménagés dans l'élément annulaire (48), et en ce que des moyens d'assemblage sont constitués par des boulons (53) dis­posés de façon à coopérer avec des écrous (54) à tra­vers lesdits trous (51, 52) pour la fermeture étanche du conteneur.12.- container according to claim 11, characterized in that the flange (49) is provided at its periphery with holes (51) regularly spaced, arranged opposite holes (52) corresponding formed in the annular element (48), and in that the assembly means consist of bolts (53) arranged so as to cooperate with nuts (54) through said holes (51, 52) for sealing the container. 13.- Conteneur suivant la revendication 11, caractérisé en ce que le récipient (59) est pourvu d'organes de retenue (66) régulièrement disposés sur l'enveloppe (61) et s'étendant radialement vers l'in­térieur du conteneur, en ce que la bride (65) est pourvue de découpes (67) complémentaires des organes de retenue (66) de façon à permettre au bouchon (60) de venir en appui contre le siège, et d'organes de butée (68) disposés sur sa face supérieure, destinés à venir en butée contre les organes de retenue (66) du récipient (59) par déplacement angulaire du bouchon (60) par rapport à celui-ci.13.- container according to claim 11, characterized in that the container (59) is provided with retaining members (66) regularly disposed on the envelope (61) and extending radially towards the interior of the container, that the flange (65) is provided with cutouts (67) complementary to the retaining members (66) so as to allow the plug (60) to bear against the seat, and to stop members (68) arranged on its upper face, intended to come into abutment against the retaining members (66) of the container (59) by angular displacement of the stopper (60) relative to the latter. 14.- Conteneur suivant la revendication 13, caractérisé en ce que la bride (65) comporte sur sa surface supérieure des portions formant coins coopé­rant avec les organes de retenue correspondants (66) pour bloquer le bouchon (60) dans sa position de fer­meture.14.- container according to claim 13, characterized in that the flange (65) has on its upper surface portions forming corners cooperating with the corresponding retaining members (66) to block the plug (60) in its closed position. 15.- Conteneur suivant la revendication 12 ou 13, caractérisé en ce que le revêtement métallique (47 ; 63) est plan.15.- container according to claim 12 or 13, characterized in that the metal coating (47; 63) is planar. 16.- Conteneur suivant la revendication 12 ou 13, caractérisé en ce que le revêtement métallique (47 ; 63) est en forme de cuvette pourvue d'une bride périphérique (49 ; 65), et en ce que la paroi latérale (47a ; 63a) de ladite cuvette (47 ; 63) est cylindr­ique et forme un organe de centrage lors de la mise en place du bouchon (44 ; 60) sur le récipient (43 ; 59).16.- container according to claim 12 or 13, characterized in that the metal coating (47; 63) is in the form of a bowl provided with a peripheral flange (49; 65), and in that the side wall (47a; 63a) of said bowl (47; 63) is cylindrical and forms a centering member when the plug (44; 60) is placed on the container (43; 59). 17.- Conteneur suivant l'une quelconque des revendications 8, 9, 10 et 15, caractérisé en ce que le revêtement (35) est pourvu sur sa face tournée vers le récipient d'un rebord de centrage (40) coopérant avec le bord interne de l'élément annulaire (36) du récipient, pour la mise en place du bouchon (34) sur le récipient (31).17.- container according to any one of claims 8, 9, 10 and 15, characterized in that the coating (35) is provided on its side facing the container with a centering flange (40) cooperating with the edge internal of the annular element (36) of the container, for the establishment of the plug (34) on the container (31). 18.- Conteneur suivant l'une quelconque des revendications 2 à 17, caractérisé en ce que l'élément annulaire (15 ; 36 ; 48 ; 64) comprend en outre une collerette axiale rentrante (18 ; 41 ; 57 ; 72) déli­mitant l'ouverture du récipient (2 ; 31 ; 43 ; 59) et formant un organe anti-débordement.18.- container according to any one of claims 2 to 17, characterized in that the annular element (15; 36; 48; 64) further comprises a re-entrant axial flange (18; 41; 57; 72) delimiting the opening of the container (2; 31; 43; 59) and forming an anti-overflow member. 19.- Conteneur suivant l'une quelconque des revendications 4 à 18, caractérisé en ce qu'un anneau en matériau lourd (25 ; 42 ; 56 ; 64) formant un blin­dage de compensation de la réduction d'épaisseur de la paroi du récipient (2 ; 31 ; 43 ; 59) et du bouchon (3 ; 34 ; 44 ; 60) du à la présence de ladite gorge (23 ; 37 ; 50 ; 70), est diposé à l'intérieur du réci­pient (2 ; 31 ; 43 ; 59) et relié à l'élément annulai­re.19.- container according to any one of claims 4 to 18, characterized in that a ring of heavy material (25; 42; 56; 64) forming a shield compensating for the reduction in thickness of the wall of the container (2; 31; 43; 59) and the stopper (3; 34; 44; 60) due to the presence of said groove (23; 37; 50; 70), is disposed inside the container (2; 31 ; 43; 59) and connected to the annular element. 20.- Conteneur suivant l'une quelconque des revendications 5 à 7 et 9 à 19, caractérisé en ce que ladite gorge (23 ; 37 ; 50 ; 70) est remplie d'un mortier de protection de l'assemblage des moyens de liaison du récipient (2 ; 31 ; 43 ; 59) et du bouchon (3 ; 34 ; 44 ; 60)20.- container according to any one of claims 5 to 7 and 9 to 19, characterized in that said groove (23; 37; 50; 70) is filled with a mortar for protecting the assembly of the connecting means container (2; 31; 43; 59) and stopper (3; 34; 44; 60) 21.- Conteneur suivant l'une quelconque des revendications 2 à 20, caractérisé en ce qu'entre les faces en regard du revêtement métallique (47 ; 63) du bouchon (44 ; 60) et de l'élément annulaire (48 ; 64) du récipient (43 ; 59) est monté un joint d'étanchéité (55 ; 69).21.- container according to any one of claims 2 to 20, characterized in that between the opposite faces of the metal coating (47; 63) of the plug (44; 60) and the annular element (48; 64 ) of the container (43; 59) is mounted a seal (55; 69). 22.- Conteneur suivant l'une quelconque des revendications 4 à 7 et 10 à 21, caractérisé en ce que la gorge (23 ; 50 ; 70) communique avec la paroi laté­rale externe de l'enveloppe (4 ; 45 ; 61) par des rai­nures radiales (26 ; 58 ; 71) formant déversoirs, ré­gulièrement disposées à l'extrémité ouverte de celle-­ci.22.- container according to any one of claims 4 to 7 and 10 to 21, characterized in that the groove (23; 50; 70) communicates with the external lateral wall of the envelope (4; 45; 61) by radial grooves (26; 58; 71) forming weirs, regularly disposed at the open end thereof.
EP89401011A 1988-04-18 1989-04-12 Container for storing radioactive waste Expired - Lifetime EP0338894B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89401011T ATE92667T1 (en) 1988-04-18 1989-04-12 STORAGE BARREL FOR RADIOACTIVE WASTE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8805090A FR2630250B1 (en) 1988-04-18 1988-04-18 RADIOACTIVE WASTE STORAGE CONTAINER
FR8805090 1988-04-18

Publications (2)

Publication Number Publication Date
EP0338894A1 true EP0338894A1 (en) 1989-10-25
EP0338894B1 EP0338894B1 (en) 1993-08-04

Family

ID=9365396

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89401011A Expired - Lifetime EP0338894B1 (en) 1988-04-18 1989-04-12 Container for storing radioactive waste

Country Status (8)

Country Link
EP (1) EP0338894B1 (en)
KR (1) KR890016581A (en)
CN (1) CN1025259C (en)
AT (1) ATE92667T1 (en)
DE (1) DE68907984T2 (en)
ES (1) ES2045483T3 (en)
FR (1) FR2630250B1 (en)
ZA (1) ZA892827B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0390379A2 (en) * 1989-03-31 1990-10-03 Westinghouse Electric Corporation Module for storage of nuclear waste packages
WO2003075285A1 (en) * 2002-03-06 2003-09-12 Yuri Sergeyevich Alexeyev Protective container

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016010903A1 (en) * 2016-09-08 2018-03-08 Jürgen Himbert Container combination and method for removing radioactive substances
DE102020005775B3 (en) 2020-09-22 2021-12-02 Helmut Schmidt Repository for low and high level radioactive waste

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2716463A1 (en) * 1977-04-14 1978-10-19 Kernforschungsz Karlsruhe DEVICE FOR TRANSPORTING AND FINAL DISPOSAL OF RADIOACTIVE WASTE
DE2726335A1 (en) * 1977-06-10 1978-12-21 Kernforschungsz Karlsruhe FINAL STORAGE CONTAINER FOR RADIOACTIVE WASTE
GB2132814A (en) * 1980-12-06 1984-07-11 Kernforschungsz Karlsruhe Container arrangement

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2716463A1 (en) * 1977-04-14 1978-10-19 Kernforschungsz Karlsruhe DEVICE FOR TRANSPORTING AND FINAL DISPOSAL OF RADIOACTIVE WASTE
DE2726335A1 (en) * 1977-06-10 1978-12-21 Kernforschungsz Karlsruhe FINAL STORAGE CONTAINER FOR RADIOACTIVE WASTE
GB2132814A (en) * 1980-12-06 1984-07-11 Kernforschungsz Karlsruhe Container arrangement

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0390379A2 (en) * 1989-03-31 1990-10-03 Westinghouse Electric Corporation Module for storage of nuclear waste packages
EP0390379A3 (en) * 1989-03-31 1991-04-10 Westinghouse Electric Corporation Module for storage of nuclear waste packages
US5431295A (en) * 1989-03-31 1995-07-11 Westinghouse Electric Corporation Storage module for nuclear waste with improved liner
WO2003075285A1 (en) * 2002-03-06 2003-09-12 Yuri Sergeyevich Alexeyev Protective container

Also Published As

Publication number Publication date
DE68907984T2 (en) 1994-03-10
KR890016581A (en) 1989-11-29
FR2630250B1 (en) 1994-01-07
ES2045483T3 (en) 1994-01-16
CN1025259C (en) 1994-06-29
ATE92667T1 (en) 1993-08-15
ZA892827B (en) 1990-11-28
DE68907984D1 (en) 1993-09-09
EP0338894B1 (en) 1993-08-04
FR2630250A1 (en) 1989-10-20
CN1038186A (en) 1989-12-20

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