EP0561694A1 - Container for receiving a liquid for protecting biologically against ionizing radiations, wall and method to build up a wall comprising such containers - Google Patents

Container for receiving a liquid for protecting biologically against ionizing radiations, wall and method to build up a wall comprising such containers Download PDF

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Publication number
EP0561694A1
EP0561694A1 EP93400676A EP93400676A EP0561694A1 EP 0561694 A1 EP0561694 A1 EP 0561694A1 EP 93400676 A EP93400676 A EP 93400676A EP 93400676 A EP93400676 A EP 93400676A EP 0561694 A1 EP0561694 A1 EP 0561694A1
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EP
European Patent Office
Prior art keywords
wall
container
cans
vertical
pipe
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
EP93400676A
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German (de)
French (fr)
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EP0561694B1 (en
Inventor
André Cosson
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Electricite de France SA
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Electricite de France SA
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Publication of EP0561694A1 publication Critical patent/EP0561694A1/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C1/00—Building elements of block or other shape for the construction of parts of buildings
    • E04C1/39—Building elements of block or other shape for the construction of parts of buildings characterised by special adaptations, e.g. serving for locating conduits, for forming soffits, cornices, or shelves, for fixing wall-plates or door-frames, for claustra
    • E04C1/392—Building elements of block or other shape for the construction of parts of buildings characterised by special adaptations, e.g. serving for locating conduits, for forming soffits, cornices, or shelves, for fixing wall-plates or door-frames, for claustra for ventilating, heating or cooling
    • 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
    • G21F3/00—Shielding characterised by its physical form, e.g. granules, or shape of the material
    • G21F3/04—Bricks; Shields made up therefrom

Definitions

  • the present invention relates to biological protection against ionizing radiation.
  • Removable biological protection devices are already known. They essentially consist of bricks of absorbent material, for example lead bricks which are placed between the source of ionizing radiation and the operators having to intervene near the latter.
  • the present invention aims to overcome these drawbacks.
  • the invention proposes in particular a liquid retention container for biological protection against ionizing radiation, comprising a liquid retention enclosure, substantially parallelepipedal, comprising on the one hand four vertical side walls, namely two side walls longitudinal, a transverse rear wall and a transverse front wall and on the other hand a lower wall and an upper wall, characterized in that the front vertical side wall or the upper wall is provided with two orifices located in the upper part of said front wall or on a projecting part of the upper wall with respect to the container, and in that the container has a pipe, internal to said enclosure, connected on one side to one of said orifices and opening on the other side in close proximity to the internal surface of the bottom wall of said enclosure.
  • the invention also provides a liquid retention container for biological protection against ionizing radiation, comprising a liquid retention enclosure, substantially parallelepipedal, comprising on the one hand four vertical side walls, namely two longitudinal side walls, one transverse rear wall and a transverse front wall provided with two orifices located in the upper part of said front wall, and on the other hand a lower wall and an upper wall having complementary shapes suitable for allowing vertical interlocking between two superimposed cans, and a pipe, internal to said enclosure, connected on one side to one of said orifices and opening out on the other side in close proximity to the internal surface of the lower wall of said enclosure.
  • the invention also provides a biological protection wall against ionizing radiation, characterized in that it comprises several cans of the type described above, arranged horizontally side by side and / or fitted vertically into one another, constituting at least one group of cans, and means for connecting the cans of the same group together for filling and emptying said cans by siphonage, each group of cans comprising an associated set of pipes, said set comprising a first pipe connectable on one side to a supply in water or to a siphon tank, and connected on the other side to the orifice connected to the internal pipe of a first container of said group, a second pipe connected on one side to the other orifice of the first container and on the other side to the orifice connected to the internal pipe of a second container of said group, a third pipe connected on one side to the other orifice of the second container and on the other side to the orifice connected to the internal pipe of a third container of said group, and so on until the last container of each of said groups of containers.
  • the wall also comprises means for holding and stabilizing the stacked canisters comprising a vertical frame comprising at least one element, substantially in the form of a lattice angle, comprising a lower horizontal wing on which a first row rests. lower of cans, said horizontal wing being connected to a vertical side wing adjoining a vertical column at the end of cans, at least one end of the lower wing being rigidly connected to one side of the vertical wing by an inclined stiffening arm .
  • the wall further comprises protective plates for the cans removably fixed, advantageously in padlockable manner to prevent unauthorized dismantling of the protective wall, on the means for holding the cans.
  • Figures 1 and 2 show an embodiment of a container according to the invention, for retaining a liquid 2, for example water, for biological protection against ionizing radiation 3 emitted from the side 4 of the container.
  • a liquid for example water
  • the container 1 comprises a substantially parallelepipedal enclosure 5 made of a material resistant to irradiation, for example made of high density polyethylene, also arranged to support a weight of several hundred kilos (for example 350 kg), and an internal pressure of 7 to 8 bars without deformation.
  • a material resistant to irradiation for example made of high density polyethylene, also arranged to support a weight of several hundred kilos (for example 350 kg), and an internal pressure of 7 to 8 bars without deformation.
  • the enclosure 5 comprises four lateral, flat, vertical walls, namely two lateral, longitudinal walls 6 and 7, a transverse rear wall 8 and a transverse front wall 9.
  • the enclosure 5 also comprises an upper wall 10 (10 ') and a lower wall 11 of complementary shape suitable for allowing vertical interlocking between two superimposed canisters 1 and 1'.
  • the upper wall 10 comprises an end part 12, projecting outwards relative to the enclosure provided with a front face 13, substantially rectangular, constituting the upper part 14 of the front wall 9 of the container.
  • the end part 12 has a constant section in the longitudinal direction of the container, and a rear part 15 in inclined plane with an angle between about 30 ° and about 60 ° with the horizontal.
  • the lower and upper walls moreover have forms of slopes arranged in particular to facilitate the ascent of the air bubbles towards the upper part of the container.
  • the lower and upper walls being of complementary shape, only the latter will be described.
  • a first downward slope substantially from the front wall of the container comprising a first slightly inclined or horizontal part, a second very inclined part constituted by the rear part 15 of the projecting end 12, and a third part 16 to slight slope, for example one or two degrees with the horizontal, up to the wall 8.
  • the wall 10 also has a downwardly sloping surface from a central edge 17 passing through the central longitudinal vertical plane 18 of the container, for example 2 or 3 degrees with the horizontal.
  • the front face 13 comprises two vertically superimposed orifices 21 and 22, located in the plane 18, which will allow both the filling, the emptying and the venting of the container during these operations.
  • the lower orifice 21 is connected to a pipe 28, internal to the enclosure, opening at 24 in the immediate vicinity of the internal upper surface 25 of the lower wall 11 of the container.
  • the pipe 18 is for example made of brass or plastic, fixed in a non-removable manner to orifice 21. It is terminated at 24 by a beveled end.
  • the pipe is arranged obliquely in the container as shown in FIG. 2 in dashed lines, in order to open at the bottom point 26 of the container, and therefore forms an angle of a few degrees, for example 15 ° with the central longitudinal vertical plane 18 from the can.
  • the projecting part 12 is symmetrical and centered relative to the plane 18.
  • the face 9 also comprises means 27 for manually gripping the container, for example comprising two handles 28 and 29, in a manner known in itself.
  • the face 9 also has a lower part 30 of complementary shape to the front face 13 of its upper part 14, as this results from the complementary shape of the lower wall 11 with the upper wall 10.
  • a can as described above can have a height of 60 cm, a width (transverse dimension) of 33 cm, and a length (longitudinal dimension) of 43 cm.
  • the thickness of the wall is for example 0.5 cm, possibly reinforced in a manner known per se to better withstand load and pressure.
  • the internal pipe 23 can be 2 cm in diameter, just like the orifices 21 and 22.
  • the projection 12 has a rectangular face of 15 cm by 10 cm, the distance between the front face and the junction between the end of the rear part 15 with the rest 16 of the upper wall, being of the order of 20 cm.
  • a can of this type weighs around 4 kg when empty for around 90 kg filled with water.
  • FIG. 3 schematically shows a wall 31 of biological protection against ionizing radiation 32, emitted by a source placed at the rear 33 of the wall.
  • the wall 31 comprises several cans of the type described above, for example six vertical columns of five cans, or five horizontal rows of six cans.
  • each column forms a group (34, 34 ', 34' ', ...) of canisters connected with each other.
  • the wall includes connection means (35, 35 ', 35' '%) of the canisters of the same group with one another for filling and emptying the canisters by siphonage.
  • the first group 34 of canisters will be described below, the other groups being produced in an identical manner.
  • the means 35 comprise a set of pipes, namely a first pipe 36 which can be connected on one side 37 to at least one water supply 38, via a pressure reducer (not shown) or to a siphon tank (not shown), and connected on the other side 39 to the lower orifice connected to the internal pipe of a first container 40, a second pipe 41 connected on one side to the other orifice 42 of the first container 40 and on the other side 43 to the orifice connected to the internal pipe of a second container 44, a third pipe 45 connected on one side 46 to the other orifice of the second container 44 and on the other side 47 to the orifice connected to the internal pipe of a third container 48, and so on for containers 49 and 50 of the same vertical column 34.
  • a first pipe 36 which can be connected on one side 37 to at least one water supply 38, via a pressure reducer (not shown) or to a siphon tank (not shown), and connected on the other side 39 to the lower orifice connected to the internal pipe of a first container 40, a second
  • the wall 31 further comprises a vertical frame 51 comprising two lattice angles 52.
  • Each angle comprises a horizontal plate 53 in lattice, for example rectangular formed by two parallel beams 54 and 55 rigidly connected by three crosspieces 56, 56 ', 56' 'parallels.
  • the external end cross member 56 '' supports, at the end, a vertical scale of width and height slightly greater respectively than the longitudinal dimensions of the cans, and vertical of the column of cans.
  • the ladder comprises for example two vertical beams 57 joined for example by seven parallel bars 58.
  • Two stiffening arms 59 inclined, connecting the end 60 of the part 53 to each beam 57, about two thirds of their height, stiffen the angle.
  • two crosspieces 61 connect the vertices of the vertical ladders, to close the frame on itself.
  • Protective plates (not shown) are also provided and fixed in a manner known per se to the chassis, for example in a padlockable manner.
  • the weight of the cans on the lower plates provides perfect stability for the entire wall.
  • the operators of the radio-protection service responsible for preparing protection before the intervention of operators near an irradiating source, proceed as follows.
  • the chassis 51 is firstly mounted in a manner known per se.
  • the front stiffening cross member 59 is simply omitted at first, so as to be able to place the cans in the chassis.
  • Pipe sets can be associated with a group of horizontal canisters or a group of vertical canisters, or both.
  • connections are also arranged to minimize the pressure losses at the fittings, the pipe bends also being provided accordingly.
  • the stiffening crosspieces 59 are put in place, then the protection plates and possibly the means for blocking and locking said plates by padlock.
  • a biological protection wall is thus formed, for example 2.50 m by 2 m, in record mounting time, for example of the order of thirty minutes.
  • the wall is then dismantled by reversing the assembly operations.
  • the retention container for its part, has four vertical side walls, namely two longitudinal side walls, a transverse rear wall and a transverse front wall and on the other hand a horizontal lower wall and an upper wall having a projecting part provided with two orifices which will allow filling and emptying by siphonage of the container via the internal pipe as described above.
  • the manual gripping means are provided on the upper wall of the container.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)
  • Stackable Containers (AREA)

Abstract

A container (1) for retaining a liquid (2) for biological protection against ionising radiations, comprising an enclosure (5) for retaining liquid, substantially parallelepipedal, comprising, on the one hand, four vertical side walls, namely two lengthwise side walls (6, 7), a transverse rear wall (8) and a transverse front wall (9) and, on the other hand, a lower wall (11) and an upper wall (10); the front vertical side wall or the upper wall is provided with two orifices (21, 22) situated in the upper part (14) of the said front wall or on a projection of the upper wall in relation to the container; the container comprises a conduit (23), internal to the said enclosure, connected on one side to one (21) of the said orifices and emerging on the other side in the immediate vicinity of the internal surface (25) of the lower wall (11) of the said enclosure. <IMAGE>

Description

La présente invention concerne la protection biologique contre les rayonnements ionisants.The present invention relates to biological protection against ionizing radiation.

Elle trouve une application particulièrement importante, bien que non exclusive, dans le domaine des protections biologiques amovibles, dont la mise en place permet d'intervenir en milieu irradiant pendant un temps déterminé en minimisant les doses d'irradiation absorbées par les intervenants.It finds a particularly important, although not exclusive, application in the field of removable biological protections, the installation of which makes it possible to intervene in an irradiating medium for a determined time while minimizing the doses of irradiation absorbed by the workers.

On connaît déjà des dispositifs de protection biologique amovibles. Ils sont essentiellement constitués par des briques de matériau absorbant, par exemple des briques de plomb qu'on dispose entre la source de rayonnement ionisant et les opérateurs ayant à intervenir à proximité de cette dernière.Removable biological protection devices are already known. They essentially consist of bricks of absorbent material, for example lead bricks which are placed between the source of ionizing radiation and the operators having to intervene near the latter.

De telles protections amovibles présentent des inconvénients. En effet elles sont d'une part coûteuses, et d'autre part difficiles et longues à mettre en oeuvre.Such removable protections have drawbacks. Indeed they are on the one hand expensive, and on the other hand difficult and long to implement.

La présente invention vise à pallier ces inconvénients.The present invention aims to overcome these drawbacks.

Pour ce faire, elle vise à fournir des éléments constitutifs d'une paroi de protection biologique et un procédé de formation de ladite paroi, répondant mieux que ceux antérieurement connus aux exigences de la pratique, notamment en ce qu'ils permettent de constituer une protection biologique amovible efficace contre les rayonnements ionisants, par exemple permettant de diviser les débits de dose d'un facteur dix, de façon peu coûteuse, simple et rapide à mettre en oeuvre.To do this, it aims to provide elements constituting a biological protection wall and a method of forming said wall, better meeting those previously known to the requirements of practice, in particular in that they make it possible to constitute protection. removable biological effective against ionizing radiation, by example allowing the dose rates to be divided by a factor of ten, inexpensively, simple and quick to implement.

Dans ce but l'invention propose notamment un bidon de rétention d'un liquide pour protection biologique contre les rayonnements ionisants, comprenant une enceinte de rétention du liquide, sensiblement parallèlépipédique, comportant d'une part quatre parois latérales verticales, à savoir deux parois latérales longitudinales, une paroi arrière transversale et une paroi avant transversale et d'autre part une paroi inférieure et une paroi supérieure, caractérisé en ce que la paroi latérale verticale avant ou la paroi supérieure est munie de deux orifices situés en partie supérieure de ladite paroi avant ou sur une partie en saillie de la paroi supérieure par rapport au bidon,
et en ce que le bidon comporte une conduite, interne à ladite enceinte, connectée d'un côté à l'un desdits orifices et débouchant de l'autre côté à proximité immédiate de la surface interne de la paroi inférieure de ladite enceinte.To this end, the invention proposes in particular a liquid retention container for biological protection against ionizing radiation, comprising a liquid retention enclosure, substantially parallelepipedal, comprising on the one hand four vertical side walls, namely two side walls longitudinal, a transverse rear wall and a transverse front wall and on the other hand a lower wall and an upper wall, characterized in that the front vertical side wall or the upper wall is provided with two orifices located in the upper part of said front wall or on a projecting part of the upper wall with respect to the container,
and in that the container has a pipe, internal to said enclosure, connected on one side to one of said orifices and opening on the other side in close proximity to the internal surface of the bottom wall of said enclosure.

L'invention propose également un bidon de rétention d'un liquide pour protection biologique contre les rayonnements ionisants, comprenant une enceinte de rétention du liquide, sensiblement parallèlépipédique, comportant d'une part quatre parois latérales verticales, à savoir deux parois latérales longitudinales, une paroi arrière transversale et une paroi avant transversale munie de deux orifices situés en partie supérieure de ladite paroi avant, et d'autre part une paroi inférieure et une paroi supérieure présentant des formes complémentaires propres à permettre l'emboîtement vertical entre deux bidons superposés, et une conduite, interne à ladite enceinte, connectée d'un côté à l'un desdits orifices et débouchant de l'autre côté à proximité immédiate de la surface interne de la paroi inférieure de ladite enceinte.The invention also provides a liquid retention container for biological protection against ionizing radiation, comprising a liquid retention enclosure, substantially parallelepipedal, comprising on the one hand four vertical side walls, namely two longitudinal side walls, one transverse rear wall and a transverse front wall provided with two orifices located in the upper part of said front wall, and on the other hand a lower wall and an upper wall having complementary shapes suitable for allowing vertical interlocking between two superimposed cans, and a pipe, internal to said enclosure, connected on one side to one of said orifices and opening out on the other side in close proximity to the internal surface of the lower wall of said enclosure.

Dans des modes de réalisation avantageux de l'invention on a de plus recours à l'une et/ou à l'autre des dispositions suivantes :

  • la conduite interne est solidaire de l'enceinte à laquelle elle est fixée de façon inamovible;
  • le bidon est manuellement déplaçable, à vide, la paroi avant verticale ou la paroi supérieure étant munie de moyens de préhension dudit bidon ;
  • la paroi supérieure de l'enceinte comporte une partie d'extrémité en saillie vers l'extérieur par rapport à l'enceinte, dont la face avant forme la partie supérieure de la paroi avant du bidon, munie desdits orifices ;
  • la face avant de la partie d'extrémité en saillie de la paroi supérieure est centrée par rapport au plan vertical longitudinal central du bidon ;
  • les parois inférieure et supérieure présentent une surface en pente descendante sensiblement à partir de la paroi avant du bidon ;
  • l'orifice connecté à la conduite interne est situé en dessous de l'autre orifice ;
  • les parois inférieure et supérieure présentent une surface en pente descendante à partir d'une arête centrale passant par le plan vertical longitudinal central du bidon ;
  • les parois supérieure et inférieure présentent respectivement au moins un pion et au moins une alvéole de forme complémentaire audit pion, agencés pour que le pion d'un premier bidon s'emboîte avec l'alvéole d'un second bidon lors de la superposition verticale de deux bidons.
In advantageous embodiments of the invention, one and / or the other of the following arrangements are also used:
  • the internal pipe is integral with the enclosure to which it is fixed irremovably;
  • the container is manually movable, when empty, the vertical front wall or the upper wall being provided with means for gripping said container;
  • the upper wall of the enclosure has an end portion projecting outwardly relative to the enclosure, the front face of which forms the upper part of the front wall of the container, provided with said orifices;
  • the front face of the projecting end part of the upper wall is centered relative to the central longitudinal vertical plane of the container;
  • the lower and upper walls have a downwardly sloping surface substantially from the front wall of the container;
  • the orifice connected to the internal pipe is located below the other orifice;
  • the lower and upper walls have a downwardly sloping surface from a central edge passing through the central longitudinal vertical plane of the container;
  • the upper and lower walls respectively have at least one pawn and at least one cell of complementary shape to said pin, arranged so that the pin of a first container fits with the cell of a second container during the vertical superposition of two containers.

L'invention propose également une paroi de protection biologique contre les rayonnements ionisants caractérisée en ce qu'elle comporte plusieurs bidons du type décrit ci-dessus, disposés horizontalement côte à côte et/ou emboîtés verticalement les uns dans les autres, constituant au moins un groupe de bidons,
et des moyens de connexion des bidons d'un même groupe entre eux pour le remplissage et la vidange desdits bidons par syphonage, chaque groupe de bidons comprenant un jeu de tuyaux associé, ledit jeu comprenant un premier tuyau connectable d'un côté à une alimentation en eau ou à un réservoir de syphonage, et connecté de l'autre côté à l'orifice raccordé à la conduite interne d'un premier bidon dudit groupe, un deuxième tuyau connecté d'un côté à l'autre orifice du premier bidon et de l'autre côté à l'orifice raccordé à la conduite interne d'un deuxième bidon dudit groupe, un troisième tuyau connecté d'un côté à l'autre orifice du deuxième bidon et de l'autre côté à l'orifice raccordé à la conduite interne d'un troisième bidon dudit groupe, et ainsi de suite jusqu'au dernier bidon de chacun desdits groupes de bidons.The invention also provides a biological protection wall against ionizing radiation, characterized in that it comprises several cans of the type described above, arranged horizontally side by side and / or fitted vertically into one another, constituting at least one group of cans,
and means for connecting the cans of the same group together for filling and emptying said cans by siphonage, each group of cans comprising an associated set of pipes, said set comprising a first pipe connectable on one side to a supply in water or to a siphon tank, and connected on the other side to the orifice connected to the internal pipe of a first container of said group, a second pipe connected on one side to the other orifice of the first container and on the other side to the orifice connected to the internal pipe of a second container of said group, a third pipe connected on one side to the other orifice of the second container and on the other side to the orifice connected to the internal pipe of a third container of said group, and so on until the last container of each of said groups of containers.

Avantageusement la paroi comporte de plus des moyens de maintien et de stabilisation des bidons empilés comprenant un chassis vertical comportant au moins un élément, sensiblement en forme de cornière en treillis, comportant une aile horizontale inférieure sur laquelle repose une première rangée inférieure de bidons, ladite aile horizontale étant connectée à une aile verticale latérale jouxtant une colonne verticale d'extrémité de bidons, au moins une extrémité de l'aile inférieure étant rigidement raccordée à un côté de l'aile verticale par un bras de rigidification incliné.Advantageously, the wall also comprises means for holding and stabilizing the stacked canisters comprising a vertical frame comprising at least one element, substantially in the form of a lattice angle, comprising a lower horizontal wing on which a first row rests. lower of cans, said horizontal wing being connected to a vertical side wing adjoining a vertical column at the end of cans, at least one end of the lower wing being rigidly connected to one side of the vertical wing by an inclined stiffening arm .

Dans un mode de réalisation avantageux, la paroi comporte de plus des plaques de protection des bidons fixées de façon amovible, avantageusement de façon cadenassable pour éviter le démantèlement non autorisé de la paroi de protection, sur les moyens de maintien des bidons.In an advantageous embodiment, the wall further comprises protective plates for the cans removably fixed, advantageously in padlockable manner to prevent unauthorized dismantling of the protective wall, on the means for holding the cans.

L'invention propose également un procédé de formation d'une paroi amovible de protection biologique contre les rayonnements ionisants, caractérisé en ce que :

  • . on empile verticalement et/ou on juxtapose latéralement des bidons vides de rétention d'un liquide, emboîtables verticalement et/ou jouxtables côte à côte latéralement, chaque bidon comportant une paroi avant verticale ou une paroi supérieure munie de deux orifices situés en partie haute de ladite paroi, et une conduite interne au bidon connectée d'un côté à l'un desdits orifices et débouchant de l'autre côté à proximité immédiate de la surface interne de la paroi inférieure du bidon ;
  • . on répartit les bidons en au moins un groupe de bidons adjacents, par rangée verticales et/ou rangées horizontales,
  • . on connecte chaque groupe de bidons avec une alimentation en eau, en connectant, pour chaque groupe, un premier tuyau d'un côté à une alimentation en eau et de l'autre côté à l'orifice raccordé à la conduite interne d'un premier bidon dudit groupe, en connectant un deuxième tuyau d'un côté à l'autre orifice dudit premier bidon et de l'autre côté à l'orifice raccordé à la conduite interne d'un deuxième bidon immédiatement adjacent, et ainsi de suite jusqu'au dernier bidon de chacun desdits groupes de bidons;
  • . on remplit les bidons de la paroi, par montée progressive du niveau dans les bidons ainsi connectés, ce qui forme la paroi de protection biologique recherchée ;

la vidange desdits bidons s'effectuant ensuite en fin d'utilisation de la paroi, par raccordement des premiers tuyaux à un réservoir de syphonage, avant démontage de ladite paroi.The invention also provides a method of forming a removable biological protection wall against ionizing radiation, characterized in that:
  • . vertically stacked and / or juxtaposed empty liquid retention cans, vertically nestable and / or adjoinable side by side laterally, each container having a vertical front wall or an upper wall provided with two orifices located in the upper part of said wall, and a pipe internal to the container connected on one side to one of said orifices and opening on the other side in close proximity to the internal surface of the bottom wall of the container;
  • . the cans are divided into at least one group of adjacent cans, by vertical row and / or horizontal rows,
  • . we connect each group of cans with a water supply, by connecting, for each group, a first pipe on one side to a water supply and on the other side to the orifice connected to the internal pipe of a first can of said group, by connecting a second pipe on one side to the other orifice of said first container and on the other side to the orifice connected to the internal pipe of a second container immediately adjacent, and so on until last container of each of said groups of containers;
  • . the cans of the wall are filled, by progressive rise of the level in the cans thus connected, which forms the desired biological protection wall;

the emptying of said cans is then carried out at the end of use of the wall, by connection of the first pipes to a siphon tank, before dismantling of said wall.

L'invention sera mieux comprise à la lecture de la description qui suit d'un mode particulier de réalisation donné à titre d'exemple non limitatif. La description se réfère aux dessins qui l'accompagnent dans lesquels :

  • la figure 1 est une vue latérale en coupe d'un mode de réalisation d'un bidon selon l'invention ;
  • la figure 2 est la vue de face du bidon de la figure 1 ;
  • la figure 3 est une vue schématique, en perspective, d'une paroi de protection biologique contre les rayonnements ionisants selon le mode de réal isation de l'invention plus particulièrement décrit ici.
The invention will be better understood on reading the following description of a particular embodiment given by way of non-limiting example. The description refers to the accompanying drawings in which:
  • Figure 1 is a side sectional view of an embodiment of a container according to the invention;
  • Figure 2 is the front view of the container of Figure 1;
  • Figure 3 is a schematic perspective view of a biological protection wall against ionizing radiation according to the embodiment of the invention more particularly described here.

Les figures 1 et 2 montrent un mode de réalisation d'un bidon selon l'invention, de rétention d'un liquide 2, par exemple de l'eau, pour protection biologique contre les rayonnements ionisants 3 émis du côté 4 du bidon.Figures 1 and 2 show an embodiment of a container according to the invention, for retaining a liquid 2, for example water, for biological protection against ionizing radiation 3 emitted from the side 4 of the container.

Le bidon 1 comprend une enceinte 5 sensiblement parallélépipédique en matériau résistant à l'irradiation, par exemple en polyéthylène haute densité, agencée par ailleurs pour supporter un poids de plusieurs centaines de kilos (par exemple 350 kg), et une pression interne de 7 à 8 bars sans déformation.The container 1 comprises a substantially parallelepipedal enclosure 5 made of a material resistant to irradiation, for example made of high density polyethylene, also arranged to support a weight of several hundred kilos (for example 350 kg), and an internal pressure of 7 to 8 bars without deformation.

L'enceinte 5 comprend quatre parois latérales, planes, verticales, à savoir deux parois latérales, longitudinales 6 et 7, une paroi arrière transversale 8 et une paroi avant transversale 9.The enclosure 5 comprises four lateral, flat, vertical walls, namely two lateral, longitudinal walls 6 and 7, a transverse rear wall 8 and a transverse front wall 9.

L'enceinte 5 comprend par ailleurs une paroi supérieure 10 (10') et une paroi inférieure 11 de forme complémentaire propre à permettre l'emboitement vertical entre deux bidons superposés 1 et 1'. La paroi supérieure 10 comporte une partie d'extrémité 12, en saillie vers l'extérieur par rapport à l'enceinte munie d'une face avant 13, sensiblement rectangulaire, constituant la partie supérieure 14 de la paroi avant 9 du bidon.The enclosure 5 also comprises an upper wall 10 (10 ') and a lower wall 11 of complementary shape suitable for allowing vertical interlocking between two superimposed canisters 1 and 1'. The upper wall 10 comprises an end part 12, projecting outwards relative to the enclosure provided with a front face 13, substantially rectangular, constituting the upper part 14 of the front wall 9 of the container.

La partie d'extrémité 12 présente une section constante dans le sens longitudinal du bidon, et une partie arrière 15 en plan incliné avec un angle compris entre de l'ordre de 30° et de l'ordre de 60° avec l'horizontal.The end part 12 has a constant section in the longitudinal direction of the container, and a rear part 15 in inclined plane with an angle between about 30 ° and about 60 ° with the horizontal.

Dans le mode de réalisation plus particulièrement décrit ici, les parois inférieure et supérieure présentent par ailleurs des formes de pentes agencées notamment pour faciliter la remontée des bulles d'air vers la partie haute du bidon.In the embodiment more particularly described here, the lower and upper walls moreover have forms of slopes arranged in particular to facilitate the ascent of the air bubbles towards the upper part of the container.

Les parois inférieure et supérieure étant de forme complémentaire, seule cette dernière va être décrite.The lower and upper walls being of complementary shape, only the latter will be described.

Une première pente descendante sensiblement à partir de la paroi avant du bidon est prévue, comprenant une première partie légèrement inclinée ou horizontale, une deuxième partie très inclinée constituée par la partie arrière 15 de l'extrémité en saillie 12, et une troisième partie 16 à faible pente, par exemple d'un ou deux degrés avec l'horizontal, jusqu'à la paroi 8.A first downward slope substantially from the front wall of the container is provided, comprising a first slightly inclined or horizontal part, a second very inclined part constituted by the rear part 15 of the projecting end 12, and a third part 16 to slight slope, for example one or two degrees with the horizontal, up to the wall 8.

La paroi 10 présente également une surface en pente descendante à partir d'une arête centrale 17 passant par le plan vertical longitudinal central 18 du bidon, par exemple de 2 ou 3 degrés avec l'horizontal.The wall 10 also has a downwardly sloping surface from a central edge 17 passing through the central longitudinal vertical plane 18 of the container, for example 2 or 3 degrees with the horizontal.

Afin de permettre un bon placement des bidons les uns sur les autres, et pour éviter tout risque de glissement de l'un par rapport à l'autre, il est également prévu, à quelques centimètres de chacun des quatre coins de la paroi supérieure, quatre pions identiques sensiblement cylindriques 19, par exemple de 0,5 cm de diamètre et 1 cm de hauteur propre à coopérer avec quatre alvéoles 20 de forme complémentaire avec les pions, prévues sur la paroi inférieure 11.To allow good placement of the cans on top of each other, and to avoid any risk of slipping of one relative to the other, it is also provided, a few centimeters from each of the four corners of the upper wall, four substantially cylindrical identical pins 19, for example 0.5 cm in diameter and 1 cm in height suitable for cooperating with four cells 20 of complementary shape with the pins, provided on the lower wall 11.

La face avant 13 comporte deux orifices verticalement superposés 21 et 22, situés dans le plan 18, qui vont permettre à la fois le remplissage, la vidange et l'éventage du bidon lors de ces opérations.The front face 13 comprises two vertically superimposed orifices 21 and 22, located in the plane 18, which will allow both the filling, the emptying and the venting of the container during these operations.

L'orifice inférieur 21 est connecté à une conduite 28, interne à l'enceinte, débouchant en 24 à proximité immédiate de la surface supérieure interne 25 de la paroi inférieure 11 du bidon.The lower orifice 21 is connected to a pipe 28, internal to the enclosure, opening at 24 in the immediate vicinity of the internal upper surface 25 of the lower wall 11 of the container.

La conduite 18 est par exemple en laiton ou en matière plastique, fixée de façon inamovible à l'orifice 21. Elle est terminée en 24 par une extrémité en biseau.The pipe 18 is for example made of brass or plastic, fixed in a non-removable manner to orifice 21. It is terminated at 24 by a beveled end.

La conduite est disposée obliquement dans le bidon comme représenté sur la figure 2 en traits mixtes, afin de déboucher au point bas 26 du bidon, et forme de ce fait un angle de quelques degrés, par exemple 15° avec le plan vertical longitudinal central 18 du bidon.The pipe is arranged obliquely in the container as shown in FIG. 2 in dashed lines, in order to open at the bottom point 26 of the container, and therefore forms an angle of a few degrees, for example 15 ° with the central longitudinal vertical plane 18 from the can.

La partie en saillie 12 est symétrique et centrée par rapport au plan 18.The projecting part 12 is symmetrical and centered relative to the plane 18.

Elle est de forme sensiblement rectangulaire. La face 9 comprend par ailleurs des moyens 27 de préhension manuelle du bidon, par exemple comprenant deux poignés 28 et 29, de façon connue en elle-même.It is of substantially rectangular shape. The face 9 also comprises means 27 for manually gripping the container, for example comprising two handles 28 and 29, in a manner known in itself.

La face 9 présente également une partie inférieure 30 de forme complémentaire à la face avant 13 de sa partie supérieure 14, comme cela résulte de la forme complémentaire de la paroi inférieure 11 avec la paroi supérieure 10.The face 9 also has a lower part 30 of complementary shape to the front face 13 of its upper part 14, as this results from the complementary shape of the lower wall 11 with the upper wall 10.

A titre d'exemple un bidon tel que décrit ci-dessus peut présenter une hauteur de 60 cm une largeur (dimension transversale) de 33 cm, et une longueur (dimension longitudinale) de 43 cm.By way of example, a can as described above can have a height of 60 cm, a width (transverse dimension) of 33 cm, and a length (longitudinal dimension) of 43 cm.

L'épaisseur de la paroi est par exemple de 0,5 cm, éventuellement renforcée de façon connue en soi pour mieux tenir en charge et en pression. La conduite interne 23 peut être de 2 cm de diamètre, tout comme les orifices 21 et 22. La saillie 12 présente une face rectangulaire de 15 cm sur 10 cm, la distance entre face avant et jonction entre l'extrémité de la partie arrière 15 avec le reste 16 de la paroi supérieure, étant de l'ordre de 20 cm.The thickness of the wall is for example 0.5 cm, possibly reinforced in a manner known per se to better withstand load and pressure. The internal pipe 23 can be 2 cm in diameter, just like the orifices 21 and 22. The projection 12 has a rectangular face of 15 cm by 10 cm, the distance between the front face and the junction between the end of the rear part 15 with the rest 16 of the upper wall, being of the order of 20 cm.

Un bidon de ce type pèse de l'ordre de 4 kg à vide pour de l'ordre de 90 kg rempli d'eau.A can of this type weighs around 4 kg when empty for around 90 kg filled with water.

Il est donc facilement maniable manuellement à vide pour un opérateur.It is therefore easy to handle manually when empty for an operator.

La figure 3 montre schématiquement une paroi 31 de protection biologique contre les rayonnements ionisants 32, émis par une source placée à l'arrière 33 de la paroi.FIG. 3 schematically shows a wall 31 of biological protection against ionizing radiation 32, emitted by a source placed at the rear 33 of the wall.

La paroi 31 comporte plusieurs bidons du type décrit ci-dessus, par exemple six colonnes verticales de cinq bidons, ou cinq rangées horizontales de six bidons.The wall 31 comprises several cans of the type described above, for example six vertical columns of five cans, or five horizontal rows of six cans.

Dans le mode de réalisation de la figure 3, chaque colonne forme un groupe (34, 34', 34'',...) de bidons connectés les uns avec les autres. Pour ce faire, la paroi comporte des moyens de connexion (35, 35', 35'' ...) des bidons d'un même groupe entre eux pour le remplissage et la vidange des bidons par syphonage.In the embodiment of Figure 3, each column forms a group (34, 34 ', 34' ', ...) of canisters connected with each other. To do this, the wall includes connection means (35, 35 ', 35' '...) of the canisters of the same group with one another for filling and emptying the canisters by siphonage.

On va décrire ci-après le premier groupe 34 de bidons, les autres groupes étant réalisés de façon identique.The first group 34 of canisters will be described below, the other groups being produced in an identical manner.

Les moyens 35 comportent un jeu de tuyaux, à savoir un premier tuyau 36 connectable d'un côté 37 à au moins une alimentation 38 en eau, via un détendeur (non représenté) ou à un réservoir de syphonage (non représenté), et connecté de l'autre côté 39 à l'orifice inférieur raccordé à la conduite interne d'un premier bidon 40, un deuxième tuyau 41 connecté d'un côté à l'autre orifice 42 du premier bidon 40 et de l'autre côté 43 à l'orifice raccordé à la conduite interne d'un deuxième bidon 44, un troisième tuyau 45 connecté d'un côté 46 à l'autre orifice du deuxième bidon 44 et de l'autre côté 47 à l'orifice raccordé à la conduite interne d'un troisième bidon 48, et ainsi de suite pour les bidons 49 et 50 de la même colonne verticale 34.The means 35 comprise a set of pipes, namely a first pipe 36 which can be connected on one side 37 to at least one water supply 38, via a pressure reducer (not shown) or to a siphon tank (not shown), and connected on the other side 39 to the lower orifice connected to the internal pipe of a first container 40, a second pipe 41 connected on one side to the other orifice 42 of the first container 40 and on the other side 43 to the orifice connected to the internal pipe of a second container 44, a third pipe 45 connected on one side 46 to the other orifice of the second container 44 and on the other side 47 to the orifice connected to the internal pipe of a third container 48, and so on for containers 49 and 50 of the same vertical column 34.

La paroi 31 comporte de plus un chassis vertical 51 comportant deux cornières en treillis 52. Chaque cornière comprend une plaque horizontale 53 en treillis, par exemple rectangulaire formée de deux longerons 54 et 55 parallèles reliés rigidement par trois traverses 56, 56', 56'' parallèles.The wall 31 further comprises a vertical frame 51 comprising two lattice angles 52. Each angle comprises a horizontal plate 53 in lattice, for example rectangular formed by two parallel beams 54 and 55 rigidly connected by three crosspieces 56, 56 ', 56' 'parallels.

La traverse d'extrémité externe 56'' supporte, en bout, une échelle verticale de largeur et de hauteur un peu supérieures respectivement aux dimensions longitudinales des bidons, et verticales de la colonne de bidons. L'échelle comporte par exemple deux poutrelles verticales 57 réunies par exemple par sept barreaux parallèles 58.The external end cross member 56 '' supports, at the end, a vertical scale of width and height slightly greater respectively than the longitudinal dimensions of the cans, and vertical of the column of cans. The ladder comprises for example two vertical beams 57 joined for example by seven parallel bars 58.

Deux bras de rigidification 59, inclinés, reliant l'extrémité 60 de la partie 53 à chaque poutrelle 57, à peu près au deux tiers de leur hauteur, rigidifient la cornière.Two stiffening arms 59, inclined, connecting the end 60 of the part 53 to each beam 57, about two thirds of their height, stiffen the angle.

Enfin, dans le mode de réalisation décrit ici, deux traverses 61 relient les sommets des échelles verticales, pour refermer le chassis sur lui-même. Des plaques de protection (non représentées) sont également prévues et fixées de façon connue en soi sur le chassis, par example de façon cadenassable.Finally, in the embodiment described here, two crosspieces 61 connect the vertices of the vertical ladders, to close the frame on itself. Protective plates (not shown) are also provided and fixed in a manner known per se to the chassis, for example in a padlockable manner.

Le poids des bidons sur les plaques inférieures procure une parfaite stabilité à l'ensemble de la paroi.The weight of the cans on the lower plates provides perfect stability for the entire wall.

On va maintenant décrire la mise en oeuvre d'une paroi selon l'invention en se référant au mode de réalisation de la figure 3 plus particulièrement décrit ici.We will now describe the implementation of a wall according to the invention with reference to the embodiment of Figure 3 more particularly described here.

Les opérateurs du service radio-protection, chargés de préparer la protection avant l'intervention d'opérateurs à proximité d'une source irradiante, procèdent de la façon suivante.The operators of the radio-protection service, responsible for preparing protection before the intervention of operators near an irradiating source, proceed as follows.

Le chassis 51 est tout d'abord monté de façon connue en soi. La traverse avant 59 de rigidification est simplement omise dans un premier temps, de façon à pouvoir placer les bidons dans le chassis.The chassis 51 is firstly mounted in a manner known per se. The front stiffening cross member 59 is simply omitted at first, so as to be able to place the cans in the chassis.

Ensuite, les opérateurs empilent verticalement et juxtaposent latéralement, manuellement, les bidons vides de rétention, en les emboitant les uns sur les autres, puis connectent les jeux de tuyau, comme indiqué précédemment. Les jeux de tuyaux peuvent être associés à un groupe de bidons horizontaux ou à un groupe de bidons verticaux, ou aux deux.Then, the operators stack vertically and juxtapose laterally, manually, the empty retention cans, by nesting them one on the other, then connect the sets of pipes, as indicated above. Pipe sets can be associated with a group of horizontal canisters or a group of vertical canisters, or both.

Les connexions sont par ailleurs agencées pour minimiser les pertes de charge au niveau des raccords, les coudes de tuyauterie étant également prévus en conséquence.The connections are also arranged to minimize the pressure losses at the fittings, the pipe bends also being provided accordingly.

On remplit ensuite les bidons de chaque groupe, par exemple, par l'intermédiaire d'un détendeur pour éviter les surpressions dans les bidons.Then fill the cans of each group, for example, through a pressure reducer to avoid overpressure in the cans.

L'eau monte dans le premier bidon 40 jusqu'à l'orifice du dessus, passe dans le tuyau de connexion 41 et remplit le deuxième bidon en passant par la conduite interne, et ainsi de suite.The water rises in the first container 40 to the orifice above, passes through the connection pipe 41 and fills the second container passing through the internal pipe, and so on.

Une fois l'ensemble des bidons rempli, on met en place les traverses 59 de rigidification puis les plaques de protection et éventuellement les moyens de blocage et de verrouillage desdites plaques par cadenas.Once all the cans have been filled, the stiffening crosspieces 59 are put in place, then the protection plates and possibly the means for blocking and locking said plates by padlock.

Une paroi murale de protection biologique est ainsi constituée, par exemple de 2,50 m sur 2 m, en un temps record de montage par exemple de l'ordre d'une trentaine de minutes.A biological protection wall is thus formed, for example 2.50 m by 2 m, in record mounting time, for example of the order of thirty minutes.

Compte tenu de l'épaisseur d'eau traversée par les rayonnements, dans le cadre du mode de réalisation plus particulièrement décrit avec les dimensions de bidon telles qu'indiquées ci-dessus, on obtient ainsi une réduction d'un facteur 10 sur le débit de dose absorbée par les opérateurs situés derrière un tel dispositif.Taking into account the thickness of water traversed by the radiation, within the framework of the embodiment more particularly described with the canister dimensions as indicated above, a reduction by a factor of 10 on the flow rate is thus obtained. of absorbed dose by operators located behind such a device.

En fin d'utilisation de la paroi, il suffit de raccorder le premier tuyau de chaque groupe à un réservoir de syphonage. La disposition interne de conduites et leur raccordement en cascade permet une vidange de chaque groupe de bidons, de façon automatique par syphonage.At the end of use of the wall, simply connect the first pipe of each group to a siphon tank. The internal arrangement of pipes and their cascade connection allows each group of containers to be emptied automatically by siphoning.

Le mur est ensuite démonté en inversant les opérations du montage.The wall is then dismantled by reversing the assembly operations.

Comme il va de soi et comme il résulte d'ailleurs de ce qui précède la présente invention ne se limite pas au mode de réalisation plus particulièrement décrit.As is obvious and as it follows from the above, the present invention is not limited to the embodiment more particularly described.

Elle en concerne au contraire toutes les variantes et notamment celles où :

  • les bidons de protection contre les rayonnements ionisants présentent des parois inférieures et supérieures de forme différente de celle plus particulièrement décrite ;
  • les bidons sont agencés pour constituer une paroi horizontale comme un plancher.
On the contrary, it concerns all variants, and in particular those where:
  • the canisters for protection against ionizing radiation have lower and upper walls of a shape different from that more particularly described;
  • the cans are arranged to constitute a horizontal wall like a floor.

Dans ce dernier cas des plaques de protection sont déposées sur un chassis de structure, au-dessus des bidons raccordés les uns avec les autres. Les plaques qui peuvent être en caillebotis, permettent ainsi le déplacement d'opérateurs sur la paroi, de façon connue en soi. Le bidon de rétention comporte quant à lui, quatre parois latérales verticales planes à savoir deux parois latérales longitudinales, une paroi arrière transversale et une paroi avant transversale et d'autre part une paroi inférieure horizontale et une paroi supérieure présentant une partie en saillie munie des deux orifices qui vont permettre le remplissage et la vidange par syphonage du bidon via la conduite interne comme décrit précédemment.In the latter case, protective plates are placed on a structural frame, above the cans connected with each other. The plates which can be gratings, thus allow the movement of operators on the wall, in a manner known per se. The retention container, for its part, has four vertical side walls, namely two longitudinal side walls, a transverse rear wall and a transverse front wall and on the other hand a horizontal lower wall and an upper wall having a projecting part provided with two orifices which will allow filling and emptying by siphonage of the container via the internal pipe as described above.

Dans ce dernier cas les moyens de préhension manuelle sont prévus sur la paroi supérieure du bidon.In the latter case, the manual gripping means are provided on the upper wall of the container.

Claims (13)

Bidon (1) de rétention d'un liquide (2) pour protection biologique contre les rayonnements ionisants, comprenant une enceinte (5) de rétention du liquide, sensiblement parallèlépipédique, comportant d'une part quatre parois latérales verticales, à savoir deux parois latérales longitudinales (6,7), une paroi arrière transversale (8) et une paroi avant transversale (9) et d'autre part une paroi inférieure (11) et une paroi supérieure (10), caractérisé en ce que la paroi latérale verticale avant ou la paroi supérieure est munie de deux orifices (21,22) situés en partie supérieure (14) de ladite paroi avant ou sur une saillie de la paroi supérieure par rapport au bidon, et en ce que le bidon comporte une conduite (23), interne à ladite enceinte, connectée d'un côté à l'un (21) desdits orifices et débouchant de l'autre côté à proximité immédiate de la surface interne (25) de la paroi inférieure (11) de ladite enceinte.Container (1) for retaining a liquid (2) for biological protection against ionizing radiation, comprising an enclosure (5) for retaining the liquid, substantially parallelepipedal, comprising on the one hand four vertical side walls, namely two side walls longitudinal (6,7), a transverse rear wall (8) and a transverse front wall (9) and on the other hand a lower wall (11) and an upper wall (10), characterized in that the vertical side wall before or the upper wall is provided with two orifices (21, 22) located in the upper part (14) of said front wall or on a projection of the upper wall with respect to the container, and in that the container has a pipe (23) , internal to said enclosure, connected on one side to one (21) of said orifices and opening on the other side in the immediate vicinity of the internal surface (25) of the bottom wall (11) of said enclosure. Bidon selon la revendication 1, caractérisé en ce le bidon est manuellement déplaçable à vide, la paroi avant verticale (9) étant munie de moyens (27) de préhension dudit bidon.Can according to claim 1, characterized in that the can is manually movable when empty, the vertical front wall (9) being provided with means (27) for gripping said can. Bidon de rétention d'un liquide pour protection biologique contre les rayonnements ionisants, selon l'une quelconque des revendications 1 et 2, caractérisé en ce que la paroi avant transversale (9) est munie desdits orifices (21, 22) en partie supérieure (14), la paroi inférieure (11) et la paroi supérieure (10) présentant des formes complémentaires propres à permettre l'emboîtement vertical entre deux bidons (1, 1') superposés.Container for retaining a liquid for biological protection against ionizing radiation, according to any one of claims 1 and 2, characterized in that the transverse front wall (9) is provided with said orifices (21, 22) in the upper part ( 14), the lower wall (11) and the upper wall (10) having complementary shapes capable of allowing vertical nesting between two superposed cans (1, 1 '). Bidon selon la revendication 3, caractérisé en ce que la paroi supérieure (10) de l'enceinte (5) comporte une partie d'extrémité (12), en saillie vers l'extérieur par rapport à l'enceinte, dont la face avant (13) forme la partie supérieure (14) de la paroi avant (9) du bidon munie desdits orifices (21, 22).Can according to claim 3, characterized in that the upper wall (10) of the enclosure (5) has an end portion (12), projecting outwards relative to the enclosure, the front face of which (13) forms the upper part (14) of the front wall (9) of the container provided with said orifices (21, 22). Bidon selon la revendication 4, caractérisé en ce que la face avant (13) de la partie d'extrémité en saillie de la paroi supérieure est centrée par rapport au plan vertical longitudinal central (18) du bidon.Can according to claim 4, characterized in that the front face (13) of the projecting end part of the upper wall is centered relative to the central longitudinal vertical plane (18) of the can. Bidon selon l'une quelconque des revendications 3 à 5, caractérisé en ce que les parois inférieure (11) et supérieure (10) présentent une surface en pente descendante sensiblement à partir de la paroi avant du bidon.Can according to any one of claims 3 to 5, characterized in that the lower (11) and upper (10) walls have a surface which slopes downwards substantially from the front wall of the can. Bidon selon l'une quelconque des revendications 3 à 6, caractérisé en ce que l'orifice (21) connecté à la conduite interne est situé en dessous de l'autre orifice (22).Can according to any one of claims 3 to 6, characterized in that the orifice (21) connected to the internal pipe is located below the other orifice (22). Bidon selon l'une quelconque des revendications 3 à 7, caractérisé en ce que les parois inférieure et supérieure présentent une surface en pente descendante à partir d'une arête centrale (17) passant par le plan vertical longitudinal (18) central du bidon.Can according to any one of claims 3 to 7, characterized in that the lower and upper walls have a surface which slopes downwards from a central edge (17) passing through the central longitudinal vertical plane (18) of the can. Bidon selon l'une quelconque des revendications 3 à 8, caractérisé en ce que les parois supérieure (10) et inférieure (11) présentent respectivement au moins un pion (19) en saillie et une alvéole (20) de forme complémentaire audit pion, agencés pour que le pion d'un premier bidon s'emboîte avec l'alvéole d'un second bidon lors de la superposition verticale de deux bidons.Can according to any one of claims 3 to 8, characterized in that the upper (10) and lower (11) walls respectively have at least one projecting pin (19) and a cell (20) of shape complementary to said pin, arranged so that the pawn of a first container fits into the socket of a second container when two vertical containers are superimposed. Paroi (31) de protection biologique contre les rayonnements ionisants caractérisée en ce qu'elle comporte plusieurs bidons (40, 44, 48, 49, 50...) selon l'une quelconque des revendications 1 à 9, disposés horizontalement côte à côte et/ou emboîtés verticalement les uns dans les autres, constituant au moins un groupe (34, 34', 34'',) de bidons et, pour chaque groupe, des moyens de connexion (35, 35', 35'',...) des bidons entre eux pour le remplissage et la vidange desdits bidons par syphonage, lesdits moyens comprenant un jeu de tuyaux associé, ledit jeu comprenant un premier tuyau (36) connectable d'un côté (37) à une alimentation en eau (38) ou à un réservoir de syphonage, et connecté de l'autre côté (39) à l'orifice raccordé à la conduite interne d'un premier bidon (40) dudit groupe, un deuxième tuyau (41) connecté d'un côté à l'autre orifice (42) du premier bidon et de l'autre côté (43) à l'orifice raccordé à la conduite interne d'un deuxième bidon (44) dudit groupe, un troisième tuyau (45) connecté d'un côté (46) à l'autre orifice du deuxième bidon (44) et de l'autre côté (47) à l'orifice raccordé à la conduite interne d'un troisième bidon (48) dudit groupe, et ainsi de suite jusqu'au dernier bidon de chacun desdits groupes de bidons.Wall (31) for biological protection against ionizing radiation, characterized in that it comprises several cans (40, 44, 48, 49, 50 ...) according to any one of Claims 1 to 9, arranged horizontally side by side and / or fitted vertically into one another, constituting at least one group (34, 34 ', 34' ',) of cans and, for each group, connection means (35, 35', 35 '' ,. ..) cans between them for filling and emptying said cans by siphonage, said means comprising an associated set of pipes, said set comprising a first pipe (36) connectable on one side (37) to a water supply ( 38) or to a siphon tank, and connected on the other side (39) to the orifice connected to the internal pipe of a first container (40) of said group, a second pipe (41) connected on one side to the other orifice (42) of the first container and on the other side (43) to the orifice connected to the internal pipe of a second container (4 4) of said group, a third pipe (45) connected on one side (46) to the other orifice of the second container (44) and on the other side (47) to the orifice connected to the internal pipe of a third container (48) of said group, and so on until the last container of each of said groups of containers. Paroi de protection biologique contre les rayonnements ionisants selon la revendication 10, caractérisée en ce qu'elle est verticale et en ce qu'elle comporte de plus des moyens de maintien et de stabilisation des bidons empilés verticalement comprenant un chassis vertical ( 51) comportant au moins un élément (52) sensiblement en forme de cornière en treillis, comportant une aile horizontale inférieure (53) sur laquelle repose une première rangée inférieure de bidons, ladite aile horizontale étant connectée à une aile verticale (57, 58) latérale jouxtant une colonne verticale d'extrémité de bidons, au moins une extrémité de l'aile inférieure étant rigidement raccordée à un côté de l'aile verticale par un bras (59) de rigidification incliné.Biological protection wall against ionizing radiation according to claim 10, characterized in that it is vertical and in that it further comprises means for retaining and stabilizing vertically stacked cans comprising a vertical frame (51) comprising at at least one element (52) substantially in the form of a lattice angle, comprising a lower horizontal wing (53) on which a first lower row of cans rests, said horizontal wing being connected to a vertical vertical wing (57, 58) adjoining a column vertical end of cans, at least one end of the lower wing being rigidly connected to one side of the vertical wing by an inclined stiffening arm (59). Paroi de protection biologique contre les rayonnements ionisants selon l'une quelconque des revendications 10 et 11, caractérisée en ce qu'elle comporte de plus des plaques de protection des bidons fixées de façon amovible, avantageusement cadenassable, sur un chassis ou ledit chassis vertical associé aux bidons.Biological protection wall against ionizing radiation according to any one of claims 10 and 11, characterized in that it further comprises protection plates for the cans removably fixed, advantageously padlockable, on a chassis or said associated vertical chassis to the cans. Procédé de formation d'une paroi amovible de protection biologique contre les rayonnements ionisants, caractérisé en ce que : . on empile verticalement et/ou on juxtapose latéralement des bidons vides de rétention d'un liquide, emboîtables verticalement et/ou jouxtables côte à côte latéralement, chaque bidon comportant une paroi avant verticale ou une paroi supérieure munie de deux orifices situés en partie haute de ladite paroi, et une conduite interne au bidon connectée d'un côté à l'un desdits orifices et débouchant de l'autre côté à proximité immédiate de la surface interne de la paroi inférieure du bidon ; . on répartit les bidons en au moins un groupe de bidons adjacents, par rangée verticales et/ou rangées horizontales, . on connecte chaque groupe de bidons avec une alimentation en eau, en connectant, pour chaque groupe, un premier tuyau d'un côté à une alimentation en eau et de l'autre côté à l'orifice raccordé à la conduite interne d'un premier bidon dudit groupe, en connectant un deuxième tuyau d'un côté à l'autre orifice dudit premier bidon et de l'autre côté à l'orifice raccordé à la conduite interne d'un deuxième bidon immédiatement adjacent, et ainsi de suite jusqu'au dernier bidon de chacun desdits groupes de bidons; . on remplit les bidons de la paroi, par montée progressive du niveau dans les bidons ainsi connectés, ce qui forme la paroi de protection biologique recherchée ; la vidange desdits bidons s'effectuant ensuite en fin d'utilisation de la paroi, par raccordement des premiers tuyaux à un réservoir de syphonage, avant démontage de ladite paroi.Process for forming a removable biological protection wall against ionizing radiation, characterized in that: . vertically stacked and / or juxtaposed empty liquid retention cans, vertically nestable and / or adjoinable side by side laterally, each container having a vertical front wall or an upper wall provided with two orifices located in the upper part of said wall, and a pipe internal to the container connected on one side to one of said orifices and opening on the other side in close proximity to the internal surface of the bottom wall of the container; . the cans are divided into at least one group of adjacent cans, by vertical row and / or horizontal rows, . we connect each group of cans with a water supply, by connecting, for each group, a first pipe on one side to a water supply and on the other side to the orifice connected to the internal pipe of a first can of said group, by connecting a second pipe on one side to the other port of said first can and on the other side to the port connected to the internal pipe of a second can immediately adjacent, and so on until the last container of each of said groups of containers; . the cans of the wall are filled, by progressive rise of the level in the cans thus connected, which forms the desired biological protection wall; the emptying of said cans is then carried out at the end of use of the wall, by connection of the first pipes to a siphon tank, before dismantling of said wall.
EP19930400676 1992-03-16 1993-03-16 Container for receiving a liquid for protecting biologically against ionizing radiations, wall and method to build up a wall comprising such containers Expired - Lifetime EP0561694B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9203117A FR2688482B1 (en) 1992-03-16 1992-03-16 CAN OF RETENTION OF A LIQUID FOR BIOLOGICAL PROTECTION AGAINST IONIZING RADIATION, WALL AND METHOD OF FORMING A WALL INCLUDING SUCH CANS.
FR9203117 1992-03-16

Publications (2)

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EP0561694A1 true EP0561694A1 (en) 1993-09-22
EP0561694B1 EP0561694B1 (en) 1997-05-28

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EP (1) EP0561694B1 (en)
DE (1) DE69310971T2 (en)
ES (1) ES2103444T3 (en)
FR (1) FR2688482B1 (en)

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WO2001054136A1 (en) * 2000-01-18 2001-07-26 John Sims Protective screen block
EP1351257A1 (en) * 2002-03-18 2003-10-08 Holtec International, Inc. Method and apparatus for maximizing radiation shielding during cask transfer procedures
GB2358415B (en) * 2000-01-18 2003-11-05 John Sims Protective screen block
GB2403228A (en) * 2003-05-02 2004-12-29 Philip Richardson Blow moulded brick and method of production thereof
US7820870B2 (en) 2006-07-10 2010-10-26 Holtec International, Inc. Apparatus, system and method for facilitating transfer of high level radioactive waste to and/or from a pool
US8067659B2 (en) 2006-10-11 2011-11-29 Holtec International, Inc. Method of removing radioactive materials from a submerged state and/or preparing spent nuclear fuel for dry storage

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US8995604B2 (en) 2009-11-05 2015-03-31 Holtec International, Inc. System, method and apparatus for providing additional radiation shielding to high level radioactive materials
EP4280229A1 (en) * 2022-05-17 2023-11-22 Koninklijke Philips N.V. Modular radiation shielding

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FR2606815A1 (en) * 1986-11-14 1988-05-20 Electricite De France Dismantleable partition for protecting against radiation and screen made from such a partition
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FR2606815A1 (en) * 1986-11-14 1988-05-20 Electricite De France Dismantleable partition for protecting against radiation and screen made from such a partition
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001054136A1 (en) * 2000-01-18 2001-07-26 John Sims Protective screen block
GB2358415B (en) * 2000-01-18 2003-11-05 John Sims Protective screen block
EP1351257A1 (en) * 2002-03-18 2003-10-08 Holtec International, Inc. Method and apparatus for maximizing radiation shielding during cask transfer procedures
US7330525B2 (en) 2002-03-18 2008-02-12 Holtec International, Inc. Method and apparatus for maximizing radiation shielding during cask transfer procedures
GB2403228A (en) * 2003-05-02 2004-12-29 Philip Richardson Blow moulded brick and method of production thereof
US7820870B2 (en) 2006-07-10 2010-10-26 Holtec International, Inc. Apparatus, system and method for facilitating transfer of high level radioactive waste to and/or from a pool
US8277746B2 (en) 2006-07-10 2012-10-02 Holtec International, Inc. Apparatus, system and method for facilitating transfer of high level radioactive waste to and/or from a pool
US8067659B2 (en) 2006-10-11 2011-11-29 Holtec International, Inc. Method of removing radioactive materials from a submerged state and/or preparing spent nuclear fuel for dry storage

Also Published As

Publication number Publication date
DE69310971T2 (en) 1997-11-27
FR2688482A1 (en) 1993-09-17
EP0561694B1 (en) 1997-05-28
DE69310971D1 (en) 1997-07-03
ES2103444T3 (en) 1997-09-16
FR2688482B1 (en) 1995-04-28

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