EP0004241A1 - Verbindungseinrichtung zwischen einem Behälter und einem zu entladenden Raum - Google Patents

Verbindungseinrichtung zwischen einem Behälter und einem zu entladenden Raum Download PDF

Info

Publication number
EP0004241A1
EP0004241A1 EP79400152A EP79400152A EP0004241A1 EP 0004241 A1 EP0004241 A1 EP 0004241A1 EP 79400152 A EP79400152 A EP 79400152A EP 79400152 A EP79400152 A EP 79400152A EP 0004241 A1 EP0004241 A1 EP 0004241A1
Authority
EP
European Patent Office
Prior art keywords
container
cover
crown
seat
hand
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
EP79400152A
Other languages
English (en)
French (fr)
Other versions
EP0004241B1 (de
Inventor
René Guilloteau
Jacques Segui
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of EP0004241A1 publication Critical patent/EP0004241A1/de
Application granted granted Critical
Publication of EP0004241B1 publication Critical patent/EP0004241B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F5/00—Transportable or portable shielded containers
    • G21F5/06—Details of, or accessories to, the containers
    • G21F5/12—Closures for containers; Sealing arrangements
    • 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
    • G21F7/00—Shielded cells or rooms
    • G21F7/005—Shielded passages through walls; Locks; Transferring devices between rooms

Definitions

  • the invention relates to a junction device between a transport container and a horizontal wall of an unloading enclosure, usable in particular for carrying out the unloading of lead containers in which were loaded irradiated nuclear fuel elements after combustion in nuclear reactors .
  • This device can be used in particular for the dry transfer of fuel elements or nuclear waste in a reprocessing plant.
  • the unloading of irradiated fuel elements from such containers is generally carried out by the wet method, according to the process known as "unloading in a swimming pool".
  • This known method makes it possible to fairly satisfactorily resolve certain problems of radioactive contamination liable to arise during unloading operations.
  • it has a certain number of drawbacks. It indeed comprises a complex succession of operations, a significant part of which is inherent in the use of the wet process. This is the case in particular of the operations of fitting and removing the protective skirts with which the container must be coated during its stay in the pool, as well as operations of rinsing with high pressure water and operations decontamination carried out by manual wiping of wet parts.
  • Unloading in a swimming pool also involves the use of very important equipment, such as the swimming pools themselves and their equipment, protective skirts, and an extremely extensive network of pipes, the cumulative contamination of which poses problems.
  • equipment such as the swimming pools themselves and their equipment, protective skirts, and an extremely extensive network of pipes, the cumulative contamination of which poses problems.
  • wet methods require a considerable implantation surface. All of these factors make it more difficult and more complex to control the spread of radioactive contamination and thus tend to negate to some extent the benefits expected in this area of wet processes.
  • the object of the invention is precisely to create a device for the dry unloading of containers used for the transport of radioactive substances, a device which, while making it possible to greatly simplify the operating process compared to known methods and correspondingly reduce the labor costs, container downtime and, in general, investment and operating costs, nevertheless achieves strict containment of contamination, thus ensuring full safety of personnel even in the event that operations require close intervention.
  • the device is designed to allow, as simply as possible, the possible implementation of remote control devices allowing the personnel to carry out the various remote operations with absolute security.
  • this remote control installation is not part of the present invnetion which is limited to the device proper whose constitution and methods of use will be explained below.
  • the invention therefore relates to a device for allowing the dry unloading of containers used for the transport of radioactive substances, in particular lead containers containing nuclear fuels, device characterized in that it firstly comprises at least one adapter ring of the container and at least one protective crown for the container cap placed at the top of the latter, the protective crown resting on the times on a shoulder of the adapter ring and on a shoulder of the container cap, secondly a cover placed in a cover seat, itself disposed in an orifice of a horizontal wall to which it is connected by deformable sealing means, the cover being provided in its central zone with a gripping device which passes through it in a sealed manner while being capable of sliding vertically relative to the cover so as to be able to grasp the plug of a container centered below the cover and whose protective plate is in contact by its upper face with the lower face of the seat of the cover and able to lift it at the same time as the cover which rests on it by the intermediate of the protective crown, seals then being arranged between the container and the adaptation crown
  • FIGS. 1 and 2 The "container”, known per se and not forming part of the present invention, is shown in a very simplified and schematic manner in FIGS. 1 and 2. It essentially consists of a steel tank of circular cross-section shown in FIG. 1 with its axis of revolution 0-0 vertical, the lower part of this tank being closed by a solid bottom 1 and its upper part by a plug 2, also massive, placed on a crown 3 and held in place by a fixing flange 4 screwed onto the crown 3, the side wall of the composite tank being formed on its face internal not very thick 5 and on its outer face of a thick steel ferrule 6, a thickness of lead 7 being interposed between the ferrules 5 and 6.
  • ferrules 5 and 6 are integral on the one hand with the base 1, on the other hand of the crown 3, the ferrule 5 being in particular welded with these parts in a leaktight manner, and at least one seal ensuring the sealing of the plug 2 relative to the crown 3.
  • a sealing tape 8 screwed, with interposition of a seal, on the upper face of the crown 3, completes the closure of the container.
  • a lateral lateral structure 9, enveloping the ferrule 6, essentially comprises means facilitating the evacuation of the heat produced within the internal cavity of the container by the radioactive substances contained therein (and which are not shown in the drawings) .
  • the container is further protected by a lower cover 12 and an upper cover 13 made of a shock absorbing material.
  • the container When the container arrives at the unloading workshops, it is stripped of the protective accessories with which it was provided during transport, namely the lower and upper covers 12 and 13, as well as the sealing tape 8.
  • the upper part of the container is in the form shown very schematically in FIG. 3.
  • claws 14 Fixed on the upper face of the plug 2 and allowing the handling thereof. For reasons of clarity, these claws 14 had not been shown in FIG. 1, executed on a smaller scale.
  • FIG. 4 similar to FIG. 3, the plug fixing flange 4 has been unscrewed and removed and an adapter ring 15 has been put in place as well as a plug protection ring 16 2.
  • This adapter ring 15 and the ring protection 16 of the plug form part of the device according to the invention.
  • Fig. 5a there are found the constituent parts of the container shown in FIG. 4, namely the side envelopes 3 and 9, the plug 2 with its claws 14, the adapter ring 15 and the ring 16 for protecting the plug 2;
  • This assembly was brought under a cover 17 and a cover seat 18, then centered and raised until the upper face of the adaptation crown 15 and the upper face of the crown 16 'for protecting the plug 2 are respectively in contact with the underside of the seal seat 18 and the underside of the seal 17.
  • the seal 17 then rests on its seat 18 and the latter is tightly connected to a floor 19, this connection sealed by means of, on the one hand a hydraulic seal 20, on the other hand of bellows 21 which allow a certain degree of mobility in the vertical direction between the seal seat 18 and the floor 19 without the tightness of the connection between this seat and this floor is compromised.
  • a gripping device designated as a whole by 22 and which essentially comprises a vertical circular barrel 23, coaxial with the cover 17 which it crosses inside a sheath 24.
  • This sheath 24 is held on the barrel 23 between a set of claws 25 fixed to the upper end of this barrel and a larger diameter portion 23 'forming the lower end of the barrel 23.
  • the sheath 24 can move slightly in the vertical direction relative to the cover 17 thanks to the bellows 27, which, during this displacement, main t ient the seal between 1 p sheath 24 and the cover 17.
  • the 0-0 axis At the lower end 23 'of the barrel 23 are fixed the 0-0 axis, which is These claws can engage, as will be seen later with the claws 14 fixed on the cap 2 of the container and which are also regularly distributed around the axis 0-0.
  • FIG. 6 is an enlarged reproduction of FIG. 5a.
  • the gripping device 22 which has just been described, has not been reproduced in FIG. 6, on which however appear details not shown in FIG. 5a.
  • Fig. '6 shows in particular that the cover 17 has an added crown 17' and that the cover seat 18 has an added crown 18 °, the crowns 17 'and 18' being respectively held by screwing on the cover and the seat. Between the added crown 17 'and the cover 17 are the seal 29. Between this same added crown 17' and the seat of the cover are the seals 30 and 31. Between the added crown 18 'and the seat seal 18 is the seal 32. Between the adapter ring 15 and the container 3 as well as the seal seat 18 are seals 33 and 34 respectively. Between the plug 2 and the container 3 is seal 35.
  • annular cavity 38 which can be supplied from the outside from the cell J, through at least one orifice 39, and which, via numerous channels 40 distributed over the periphery, is in communication with the space 41 between the cover and its seat.
  • This same space 41 is in communication, via at least one channel 42, with at least one orifice 43 opening into the upper cell S.
  • Fig. 7 shows a funnel, designated as a whole by 44, introduced into the opening of the lid seat 18 and of the adapter ring 15, and whose horizontal upper edge 45 is supported on the lid seat 18.
  • This funnel is double-walled 46 ′, 46 "with consequently an internal space 47 connected in its upper part to at least one suction device (not shown) by at least one tube 48.
  • Ports 49, formed in the internal wall 46 "from the funnel 44, allow, when the suction device is working, to suck the air - and the dust it holds in suspension - in the central area of the funnel 44.
  • a flange 50 is provided on the funnel 44, on which a shutter base 51 can be placed.
  • the device according to the invention comprises the assembly formed by the adaptation crown 15, the crown 16 for protecting the stopper, the cover 17, the cover seat 18, the funnel 44, and comprises, at the same time as these main parts, all the additional equipment - gripping devices, seals, pipes, etc.- assigned to each of these main parts and which have been described above.
  • volume a With regard to the volume a), it is planned to treat it when the different parts, after closing the container, are still in the respective positions shown in FIG. 7, that is to say before removing the closed container.
  • This treatment is carried out by injecting, via pipes (not shown) tightly connected to the orifices 39, a fluid in the circuit constituted by this orifice 39, the cavity 38, the channels 40, the volume 41, the channels 42 and pipes connected in a leaktight manner to the orifices 43, a fluid which may be a gas or a liquid.
  • volume a) or 41 If it is a gas or a fluid, the circulation of this fluid according to the arrows F will be at the highest possible speed so as to obtain a decontamination of the volume a) or 41 by an effect of washing and rinsing entraining the radioactive particles in an area far from cell J where they will no longer present a danger.
  • a viscous liquid it may be a special grease, forced into the circuit in the direction of the arrows F and whose role will be to close this circuit and in particular the volume a) or 41 while coating the radioactive particles and tending to move them away from the J cell.
  • volume a) or 41 will be filled with uncontaminated fat.
  • a sheet metal receptacle 52 can be placed under the cover and its seat when there is no container during unloading (see Fig. 8).
  • volume c the dimensions of which are extremely small, must be decontaminated "in situ”.
  • the combination formed by the double bellows 21 and the hydraulic seal 20 also allows an effective fight against the spread of contamination.
  • the use of a double bellows 21 allows, by a vacuum connection - normally closed by a tight plug 21 '- located between the two individual bellows, to test the tightness thereof.
  • the presence of the hydraulic seal also makes it possible to keep the space existing between this seal and the bellows out of contamination and thus proceed without risk to the replacement of the bellows if they are defective.
  • the hydraulic seal 20 is provided with devices known per se (for example a constant level supply) to preserve its effectiveness in all circumstances.
  • the device according to the invention makes it possible to satisfactorily avoid the propagation of radioactive contamination during operations related to dry unloading.
  • FIG. 5 shows how this device can be used for shapes of the adaptation and protection crowns will have to be modified somewhat, the protection crown having in particular a diametral section which instead of being rectangular as in FIG. 5a, will have, in the 16 "version according to FIG. 5 'has a square shape, and the adapter ring, in its 15" version, being modified correspondingly.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Closures For Containers (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Sealing Of Jars (AREA)
  • Refuse Receptacles (AREA)
EP79400152A 1978-03-09 1979-03-08 Verbindungseinrichtung zwischen einem Behälter und einem zu entladenden Raum Expired EP0004241B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7806821A FR2419568A1 (fr) 1978-03-09 1978-03-09 Dispositif de jonction entre un conteneur et une enceinte de dechargement
FR7806821 1978-03-09

Publications (2)

Publication Number Publication Date
EP0004241A1 true EP0004241A1 (de) 1979-09-19
EP0004241B1 EP0004241B1 (de) 1981-10-14

Family

ID=9205566

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79400152A Expired EP0004241B1 (de) 1978-03-09 1979-03-08 Verbindungseinrichtung zwischen einem Behälter und einem zu entladenden Raum

Country Status (6)

Country Link
US (1) US4310034A (de)
EP (1) EP0004241B1 (de)
JP (1) JPS54133298A (de)
DE (1) DE2960962D1 (de)
ES (1) ES478383A1 (de)
FR (1) FR2419568A1 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0043106A1 (de) * 1980-07-02 1982-01-06 TRANSNUKLEAR GmbH Transport- und/oder Lagerbehälter mit einer Innenauskleidung und Verfahren zu seiner Herstellung
US4373827A (en) * 1980-07-01 1983-02-15 Contraves Ag Arrangement for the rigid connection of a driven shaft with a graduated disk of a precision measuring instrument
FR2528028A1 (fr) * 1982-06-02 1983-12-09 Hitachi Shipbuilding Eng Co Appareil d'ouverture et de fermeture de recipients hermetiques
EP0180058A2 (de) * 1984-10-31 1986-05-07 Westinghouse Electric Corporation Deckelsystem für einen Lagerbehälter für verbrauchten Kernbrennstoff
FR2625023A2 (fr) * 1978-03-09 1989-06-23 Commissariat Energie Atomique Dispositif de jonction entre un conteneur de transport et une paroi horizontale d'une enceinte de dechargement
EP0384143A2 (de) * 1989-02-22 1990-08-29 Noell GmbH Andockeinrichtung für radioaktive Stoffe aufnehmende Behälter an einer Schleuse
FR2666442A1 (fr) * 1990-09-05 1992-03-06 Commissariat Energie Atomique Machine de remplacement de portes d'acces a des zones irradiees, et utilisation d'une telle machine.
FR2725188A1 (fr) * 1994-10-04 1996-04-05 Commissariat Energie Atomique Systeme d'accrochage d'un fut a une paroi d'enceinte

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4828789A (en) * 1984-02-03 1989-05-09 Westinghouse Electric Corp. Reactor vessel head permanent shield
DE3440277C1 (de) * 1984-11-03 1986-05-22 Siempelkamp Gießerei GmbH & Co, 4150 Krefeld Verfahren zum Einbringen von radioaktiven Abfaellen in einen Schmelzofen und Vorrichtung zur Durchfuehrung des Verfahrens
FR2582139B1 (fr) * 1985-05-15 1989-11-24 Mediterranee Const Navales Ind Dispositif de transport, de positionnement et d'accostage d'un conteneur sous une fosse de chargement dans une installation nucleaire
FR2642217B1 (fr) * 1989-01-25 1991-05-03 Framatome Sa Dispositif d'etancheite pour une colonne d'instrumentation traversant le couvercle d'une cuve de reacteur nucleaire a eau sous pression
US5319686A (en) * 1993-07-30 1994-06-07 Newport News Shipbuilding And Dry Dock Company Dry transfer of spent nuclear rods for transporation
US5406600A (en) * 1993-10-08 1995-04-11 Pacific Nuclear Systems, Inc. Transportation and storage cask for spent nuclear fuels
JPH0824443A (ja) * 1994-07-05 1996-01-30 Autoplax Corp 軌道ディスプレー
FR2833745B1 (fr) * 2001-12-14 2004-10-01 Becton Dickinson France Dispositif de protection pour enceinte sterile
FR2868590B1 (fr) * 2004-04-02 2006-06-09 Cogema Dispositif d'accostage etanche d'enceintes mobiles de differents diametres
ES2647110T3 (es) * 2013-07-10 2017-12-19 GNS Gesellschaft für Nuklear-Service mbH Alojamiento de barras de combustible
FR3060192B1 (fr) * 2016-12-09 2019-05-17 Tn International Emballage de transport et/ou d'entreposage de matieres radioactives comprenant un systeme de communication fluidique ameliore entre l'interieur et l'exterieur de l'enceinte de confinement

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1452629A (fr) * 1965-04-16 1966-04-15 Kernforschung Gmbh Ges Fuer Dispositif de fermeture étanche aux gaz pour ouvertures de branchement de réservoirs ou analogues, et installation pourvue dudit dispositif ou similaire
FR1539845A (fr) * 1967-07-24 1968-09-20 Lyonnaise De Plomberie Ind Soc Perfectionnements aux dispositifs d'obturation associés aux portes d'introduction etd'évacuation des enceintes à atmosphère contaminée
FR2040616A5 (de) * 1969-04-04 1971-01-22 Commissariat Energie Atomique
FR2108524A5 (de) * 1970-09-26 1972-05-19 Kernforschung Gmbh Ges Fuer

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH529425A (de) * 1971-03-25 1972-10-15 Bbc Brown Boveri & Cie Brennelement-Wechselmaschine
US3765549A (en) * 1971-10-21 1973-10-16 Transfer Systems Apparatus and method for loading nuclear fuel into a shipping cask without immersion in a pool
US3838289A (en) * 1972-08-29 1974-09-24 Gilbert Associates Radioactive waste filter removal system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1452629A (fr) * 1965-04-16 1966-04-15 Kernforschung Gmbh Ges Fuer Dispositif de fermeture étanche aux gaz pour ouvertures de branchement de réservoirs ou analogues, et installation pourvue dudit dispositif ou similaire
FR1539845A (fr) * 1967-07-24 1968-09-20 Lyonnaise De Plomberie Ind Soc Perfectionnements aux dispositifs d'obturation associés aux portes d'introduction etd'évacuation des enceintes à atmosphère contaminée
FR2040616A5 (de) * 1969-04-04 1971-01-22 Commissariat Energie Atomique
FR2108524A5 (de) * 1970-09-26 1972-05-19 Kernforschung Gmbh Ges Fuer

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2625023A2 (fr) * 1978-03-09 1989-06-23 Commissariat Energie Atomique Dispositif de jonction entre un conteneur de transport et une paroi horizontale d'une enceinte de dechargement
US4373827A (en) * 1980-07-01 1983-02-15 Contraves Ag Arrangement for the rigid connection of a driven shaft with a graduated disk of a precision measuring instrument
EP0043106A1 (de) * 1980-07-02 1982-01-06 TRANSNUKLEAR GmbH Transport- und/oder Lagerbehälter mit einer Innenauskleidung und Verfahren zu seiner Herstellung
FR2528028A1 (fr) * 1982-06-02 1983-12-09 Hitachi Shipbuilding Eng Co Appareil d'ouverture et de fermeture de recipients hermetiques
EP0180058A2 (de) * 1984-10-31 1986-05-07 Westinghouse Electric Corporation Deckelsystem für einen Lagerbehälter für verbrauchten Kernbrennstoff
EP0180058A3 (en) * 1984-10-31 1987-05-13 Westinghouse Electric Corporation Closure system for a spent fuel storage cask
EP0384143A2 (de) * 1989-02-22 1990-08-29 Noell GmbH Andockeinrichtung für radioaktive Stoffe aufnehmende Behälter an einer Schleuse
EP0384143A3 (en) * 1989-02-22 1990-12-19 Noell Gmbh Device for docking containers for the receipt of radioactive materials in a lock
FR2666442A1 (fr) * 1990-09-05 1992-03-06 Commissariat Energie Atomique Machine de remplacement de portes d'acces a des zones irradiees, et utilisation d'une telle machine.
FR2725188A1 (fr) * 1994-10-04 1996-04-05 Commissariat Energie Atomique Systeme d'accrochage d'un fut a une paroi d'enceinte

Also Published As

Publication number Publication date
JPS648318B2 (de) 1989-02-13
DE2960962D1 (en) 1981-12-24
FR2419568B1 (de) 1980-08-29
EP0004241B1 (de) 1981-10-14
FR2419568A1 (fr) 1979-10-05
US4310034A (en) 1982-01-12
ES478383A1 (es) 1979-12-16
JPS54133298A (en) 1979-10-16

Similar Documents

Publication Publication Date Title
EP0004241B1 (de) Verbindungseinrichtung zwischen einem Behälter und einem zu entladenden Raum
EP0537071B1 (de) Verfahren zur Konditionierung oder Wiederaufbereitung von gebrauchten ionischen Kartuschen
CA2878432A1 (fr) Dispositif de pulverisation d'un produit de ressuage sur une piece
EP1351859B1 (de) Verfahren und anlage zur leerung von fässern
FR2964091A1 (fr) Dispositif de manutention de futs, installation de transfert de materiau en poudre et procede de transfert
EP1974357B1 (de) Verfahren und einrichtung zum schliessen eines beladenen behälters mit bestrahltem kernbrennstoff in einem wassergefüllten pool
EP0078212B1 (de) Vorrichtung zur Entnahme von Flüssigkeitsproben
FR2572840A1 (fr) Procede pour preparer une coquille aspirante en vue de la reception de dechets radioactifs vitrifies, conformement a la methode par aspiration, et dispositif pour la mise en oeuvre du procede
EP0148802B1 (de) Einrichtung zur Handhabung von Brennstoffelementen und Brennstoffelement für die Vorrichtung
FR2530065A1 (fr) Procede de manutention de chateau et double recipient pour sa mise en oeuvre
FR2502829A1 (fr) Installation de stockage de combustible nucleaire
FR2819622A1 (fr) Procede et dispositif de decontamination radiactive d'une surface situee a l'interieur d'un corps creux
EP0295995B1 (de) Reinigungsverfahren und -vorrichtung für ein Führungsrohr eines Neutronenflussmessers in einem druckwassergekühlten Kernreaktor
EP1116242B1 (de) Verfahren und anlage zum füllen von fässern mit gefährlichem abfall
EP0044257B1 (de) Anlage zum Auswechseln einer Einrichtung eines Kreislaufs mit kontaminierter Flüssigkeit
FR2728382A1 (fr) Procede pour demonter des elements encombrants des equipements internes d'une cuve sous pression d'une installation nucleaire et pour recueillir les elements demontes
EP0048671B1 (de) Anlage zur Energieerzeugung mit mehreren Kernreaktoren mit schnellen Neutronen und mit einer Vorrichtung zum Auswechseln von Brennelementen
FR2636771A1 (fr) Dispositif et procede de recuperation et d'elimination de dechets radio-actifs sous eau dans une piscine
FR2625023A2 (fr) Dispositif de jonction entre un conteneur de transport et une paroi horizontale d'une enceinte de dechargement
EP0024990B1 (de) Vorrichtung zum Transport bestrahlten Kernbrennstoffs durch die Abdeckplatte eines Kernreaktors hindurch
WO1997000522A1 (fr) Systeme d'etancheite pour l'accostage d'un conteneur sous un four de fusion
FR2502380A1 (fr) Procede et dispositif pour le transfert d'elements combustibles irradies d'un bassin a un autre bassin
FR2494163A1 (fr) Dispositif de telemanipulation demontable et protege de la contamination
BE1011152A3 (fr) Dispositif pour le groupement d'assemblages.
BE1008006A3 (fr) Procede et dispositif de retournement d'un assemblage combustible d'un reacteur nucleaire refroidi a l'eau.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE CH DE GB IT SE

17P Request for examination filed
ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): BE CH DE GB IT SE

REF Corresponds to:

Ref document number: 2960962

Country of ref document: DE

Date of ref document: 19811224

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19840305

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19840331

Year of fee payment: 6

Ref country code: BE

Payment date: 19840331

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19890308

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19890309

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Effective date: 19890331

Ref country code: BE

Effective date: 19890331

BERE Be: lapsed

Owner name: COMMISSARIAT A L'ENERGIE ATOMIQUE ETABLISSEMENT D

Effective date: 19890331

GBPC Gb: european patent ceased through non-payment of renewal fee
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

EUG Se: european patent has lapsed

Ref document number: 79400152.9

Effective date: 19900118

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19980316

Year of fee payment: 20

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT