EP0269896B1 - Deckelverschluss für den äusseren Abschirmbehälter eines Doppelbehältersystems zum Transport und zur Lagerung von radioaktiven Abfällen - Google Patents

Deckelverschluss für den äusseren Abschirmbehälter eines Doppelbehältersystems zum Transport und zur Lagerung von radioaktiven Abfällen Download PDF

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Publication number
EP0269896B1
EP0269896B1 EP87116222A EP87116222A EP0269896B1 EP 0269896 B1 EP0269896 B1 EP 0269896B1 EP 87116222 A EP87116222 A EP 87116222A EP 87116222 A EP87116222 A EP 87116222A EP 0269896 B1 EP0269896 B1 EP 0269896B1
Authority
EP
European Patent Office
Prior art keywords
shielding
intermediate ring
ring
cover
container
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.)
Expired - Lifetime
Application number
EP87116222A
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German (de)
English (en)
French (fr)
Other versions
EP0269896A1 (de
Inventor
Franz Wolfgang Dr. Popp
Dietmar Flehr
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.)
Deutsche Gesellschaft fuer Wiederaufarbeitung von Kernbrennstoffen mbH
Original Assignee
Deutsche Gesellschaft fuer Wiederaufarbeitung von Kernbrennstoffen mbH
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 Deutsche Gesellschaft fuer Wiederaufarbeitung von Kernbrennstoffen mbH filed Critical Deutsche Gesellschaft fuer Wiederaufarbeitung von Kernbrennstoffen mbH
Publication of EP0269896A1 publication Critical patent/EP0269896A1/de
Application granted granted Critical
Publication of EP0269896B1 publication Critical patent/EP0269896B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F5/00—Transportable or portable shielded containers
    • G21F5/005—Containers for solid radioactive wastes, e.g. for ultimate disposal
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F5/00—Transportable or portable shielded containers
    • G21F5/06—Details of, or accessories to, the containers
    • G21F5/12—Closures for containers; Sealing arrangements

Definitions

  • the invention relates to a lid closure for a double container system according to the preamble of claim 1.
  • the outer shielding container usually has a wall thickness of 200 mm in order to secure the necessary shielding against radioactive radiation.
  • this thick-walled outer shielding container is intended to provide mechanical protection for the inner container during transport and in the event of impact loads.
  • the inner storage container holds the radioactive substances gastight.
  • it can be equipped with a double-lid system, the inner screwed-in primary lid of which provides gas tightness via appropriate seals.
  • An outer secondary cover is welded to the container body of the inner storage container at the loading point or at another location.
  • closure lid of the shielding container which is also used for shielding provided with an external thread and screwed into the loading opening, which provides a corresponding internal thread section in the upper area.
  • This technical solution has the disadvantage that it is necessary to turn the entire closure lid or the container to open and close it. Since the shielding cover or shielding container has a very high weight, a corresponding technical effort must be provided, which complicates the nuclear facilities. The appropriate special aids must be kept available everywhere.
  • the invention has for its object to provide a lid closure for a double container system according to the preamble of claim 1, which enables easier closing and opening of the outer shielding container.
  • the shielding cover for fastening the shielding container is fastened to the intermediate ring, the choice of fastening means being large and being able to be selected in accordance with the respective equipment of the nuclear facilities.
  • a further significant advantage is considered that the shielding cover is significantly lighter than a screw-in cover provided with an external thread and covering the entire loading opening. This means much easier handling, which is important in nuclear facilities, where remote handling is often required.
  • the shielding cover is screwed onto the intermediate ring by means of commercially available threaded screws.
  • the shielding cover can be screwed onto the intermediate ring. To open the shielding container, all that is required is to unscrew the bolts, for which purpose common tools, such as impact wrenches, can be used in the nuclear facilities.
  • the design according to the characterizing part of claim 4 has the advantageous consequence that the inner storage container is secured via the nose-shaped attachment without the loading opening being blocked.
  • an annular test space for the weld seam of the upper secondary cover of the inner container is created after the intermediate ring has been unscrewed.
  • a further advantageous embodiment is characterized in the features of claim 16. Due to the conical cross-section of the ring opening of the screw-in ring and the matching central extension of the shielding cover, the shielding cover is centered with a good fit.
  • the lid used is set down below the screw-in ring. This ensures that the weight of the inner storage container is only removed via the screw-in ring in the event of a fall load.
  • the cheese head screws therefore only have to hold the shielding cover on the screw-in ring.
  • a further advantageous embodiment of the invention is characterized by the feature of claim 18.
  • the conical outer ring shoulder of the screw-in ring forms a further centering for the shielding lid, which is now embedded in the container face.
  • the annular gaps between the sealing cover, the outer ring shoulder of the screw-in ring and the edge of the shielding container are covered by an embedded sealing ring.
  • This sealing ring prevents water from penetrating the thread between the shielding container and the screw-in ring and in the gap between the screw-in ring and the shielding cover.
  • the invention creates a lid closure of a double container system, which offers significant advantages when loading and unloading.
  • To open and close the outer shielding container during the loading process only the screw bolts or fastening means holding the shielding cover on the intermediate ring need to be removed or tightened.
  • the unscrewing or removal of the intermediate ring which may be desired, for example for unloading the inner container, can now take place at a predetermined location, in which corresponding special tools are available.
  • the intermediate ring fixes the inner container, but enables further treatment steps after loading.
  • the secondary cover can be fastened by means of a corresponding automatic welding machine by means of a narrow gap welding and thus sealed gas-tight. This secondary seam ensures the gas-tight containment of the fuel elements even with very long storage times.
  • the shielding cover can be fastened to the intermediate ring by simple fastening means such as cylinder screws.
  • the intermediate ring can continue serve the axial fixation of the storage container and the absorption of its shock loads.
  • the double container package shown in FIGS. 1 and 2 has a shielding container 11 made of GGG.
  • a storage container 17 made of steel is inserted, which has in its cavity 18 an insert grid 19 for receiving individual, densely arranged fuel rods 21 from disassembled nuclear reactor fuel elements.
  • the scrap parts 25 of the disassembled nuclear reactor fuel elements are introduced while being filled with a setting compound, such as synthetic resin.
  • the storage space 18 of the storage container 17 is closed by a screwed-on primary cover 27, including sealing rings 29 and 31.
  • a secondary cover 33 which is flush with the upper outer edge of the storage container 17 is inserted in the loading opening 32 of the storage container 17 and is welded to the container body.
  • the storage container 17 is provided with a corrosion protection layer 35 applied by build-up welding.
  • This neutron moderator 41 consists of individual, superimposed polyethylene rings 43.
  • the loading opening 45 of the shielding container 11 has an inner, tapered downwardly tapering threaded section 47 into which an appropriately conical intermediate ring 49 with an external thread 48 is inserted.
  • the intermediate ring 49 lies with its lower end face 51 on a step 53 in the inner wall of the shielding container 11.
  • the step 53 is arranged below the upper secondary cover 33.
  • the intermediate ring 49 On the upper end face, the intermediate ring 49 has an outer ring shoulder 55 which has a conically tapering inner surface 57.
  • the intermediate ring 49 is, seen in cross section, provided with a nose-shaped projection 59 which projects inward beyond the edge of the inner container 17, the loading opening 32 of the inner container 17 being left free from the ring opening 61.
  • a shielding cover 63 closing the shielding container 11 is correspondingly provided with a central guide projection 65 with a conical cross section and lies with its horizontal edge surface 67 on the intermediate ring 49.
  • the guide projection 65 of the shielding cover 11 ends somewhat above the lower horizontal surface 69 of the inwardly projecting nose projection 59.
  • the resulting distance 71 between the two points downwards Surfaces of the shielding cover 63 and the nose-shaped extension 59 ensure that the weight of the storage container 11 is only removed via the intermediate ring 49 in the event of a fall load.
  • the shielding cover 63 is screwed onto the intermediate ring 49 via cylinder screws 73.
  • the intermediate ring 49 serves on the one hand for the axial fixation of the storage container 17 and absorbs its shock loads and on the other hand makes the shielding cover 63 attachable via cylinder screws 73.
  • the end face of the open end of the shielding container 11 and the upper surface of the shielding cover 63 each have a facing circumferential recess 75 and 77, into which an annular sealing ring 79 is inserted and screwed tight.
  • the sealing ring 79 prevents water from penetrating into the conical thread 47, 48 and into the gap between the intermediate ring 49 and the shielding cover 63.
  • the double container package is pre-assembled in a manufacturing company.
  • the inner storage container 17 is placed in the shielding container 11.
  • the intermediate ring 49 is then screwed into the loading opening of the shielding container 11.
  • the shielding cover 63 is fastened to the intermediate ring 49 via cylinder screws 73.
  • the pre-assembled double container is opened at the loading location, i.e. the shielding cover 63 is removed after loosening and unscrewing the cheese head screws 73 using conventional tools.
  • the double container bundle is loaded with the radioactive material within a shielded cell.
  • the primary cover 27 is inserted and screwed onto the projecting wall of the storage container 17.
  • the secondary lid 33 is then inserted and fastened to the container body by means of narrow gap welding. This is followed by build-up welding from a corrosion-resistant metal over the weld seam.
  • the shielding cover 63 is inserted and screwed tightly onto the intermediate ring 49 by means of the cheese head screws 73 and the sealing ring 79 is inserted and mounted.
  • the loaded double container package is now ready for transport to another nuclear facility.
  • the storage container 17 is now fixed, any shock loads are absorbed by the intermediate ring 49.
  • FIG 3 shows an embodiment of the connection of the intermediate ring 49 in the loading opening of the shielding container 11, wherein cylindrical threads 81 are provided in the loading opening and on the outer circumference of the intermediate ring 49.
  • the intermediate ring 49 has on its outer circumference annular segments 83 which engage in corresponding annular recesses 85 in the wall of the shielding container.
  • the intermediate ring 49 is secured by a multi-part wedge-like insert ring 87 which projects into an inner circumferential groove 89 in the loading opening of the shielding container 11.
  • the shielding cover 63 which is screwed to the intermediate ring 49, including the insert ring 87.
  • the connection between the shielding container 11 and the intermediate ring 49 according to FIG. 8 is established via a two-part clamping ring 93, which includes a peripheral outer flange 95 of the shielding container 11 and a correspondingly arranged peripheral outer flange 97 of the intermediate ring 49.
  • Fig. 9 it is shown that the intermediate ring 49 has an outer flange 99 which is attached to the end face of the shielding container 11.
  • FIG. 10 and 11 show through the wall of the shielding container 11 radially engaging pressure screws 101 and 103, which press (FIG. 10) on a circlip 107 inserted in a circumferential groove 105 of the intermediate ring 49 and on the other hand (FIG 11) act on a multi-part profile ring 113 provided in a groove 109 of the loading opening and provided with teeth (111).
  • This profile 111 of the profile ring 113 engages in a corresponding outer profile of the intermediate ring 49 and thus secures it in a form-fitting manner.

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)
  • Monitoring And Testing Of Nuclear Reactors (AREA)
  • Packages (AREA)
EP87116222A 1986-11-29 1987-11-04 Deckelverschluss für den äusseren Abschirmbehälter eines Doppelbehältersystems zum Transport und zur Lagerung von radioaktiven Abfällen Expired - Lifetime EP0269896B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863639653 DE3639653A1 (de) 1986-11-29 1986-11-29 Deckelverschluss fuer den aeusseren abschirmbehaelter eines doppelbehaeltersystems zum transport und zur lagerung von radioaktiven abfaellen
DE3639653 1986-11-29

Publications (2)

Publication Number Publication Date
EP0269896A1 EP0269896A1 (de) 1988-06-08
EP0269896B1 true EP0269896B1 (de) 1991-06-12

Family

ID=6314362

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87116222A Expired - Lifetime EP0269896B1 (de) 1986-11-29 1987-11-04 Deckelverschluss für den äusseren Abschirmbehälter eines Doppelbehältersystems zum Transport und zur Lagerung von radioaktiven Abfällen

Country Status (6)

Country Link
US (1) US4818878A (enrdf_load_stackoverflow)
EP (1) EP0269896B1 (enrdf_load_stackoverflow)
JP (1) JPS63144299A (enrdf_load_stackoverflow)
KR (1) KR920007745B1 (enrdf_load_stackoverflow)
BR (1) BR8706417A (enrdf_load_stackoverflow)
DE (2) DE3639653A1 (enrdf_load_stackoverflow)

Families Citing this family (30)

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US4883637A (en) * 1988-08-25 1989-11-28 Nuclear Assurance Corporation Closure arrangement for spent nuclear fuel shipping containers
DE3905362A1 (de) * 1989-02-22 1990-08-23 Noell Gmbh Andockeinrichtung fuer radioaktive stoffe aufnehmende behaelter an einer schleuse
IT1235121B (it) * 1989-07-13 1992-06-18 Casagrande Spa Sistema per lo stoccaggio permanente dei rifiuti radioattivi.
US5225114A (en) * 1991-09-18 1993-07-06 Chem-Nuclear Systems, Inc. Multipurpose container for low-level radioactive waste
US5391887A (en) * 1993-02-10 1995-02-21 Trustees Of Princeton University Method and apparatus for the management of hazardous waste material
US5406600A (en) * 1993-10-08 1995-04-11 Pacific Nuclear Systems, Inc. Transportation and storage cask for spent nuclear fuels
US5442186A (en) * 1993-12-07 1995-08-15 Troxler Electronic Laboratories, Inc. Radioactive source re-encapsulation including scored outer jacket
US5777343A (en) * 1996-05-08 1998-07-07 The Columbiana Boiler Company Uranium hexafluoride carrier
US5678237A (en) * 1996-06-24 1997-10-14 Associated Universities, Inc. In-situ vitrification of waste materials
US5995573A (en) * 1996-09-18 1999-11-30 Murray, Jr.; Holt A. Dry storage arrangement for spent nuclear fuel containers
FR2763170B1 (fr) * 1997-05-06 1999-06-18 Transnucleaire Dispositif de fermeture etanche d'un boitier de confinement a usages multiples pour assemblages combustibles nucleaires irradies ou dechets a haute activite
US6823034B1 (en) * 1999-03-31 2004-11-23 The United States Of America As Represented By The United States Department Of Energy Closure mechanism and method for spent nuclear fuel canisters
EP1109173A1 (de) * 1999-12-17 2001-06-20 Siemens Aktiengesellschaft Behältersystem, Materialbehälter und Verfahren zur Konditionierung von radioaktivem Material
US6617484B1 (en) 2000-04-18 2003-09-09 Wmg, Inc. Containment and transportation of decommissioned nuclear reactor pressure vessels and the like
US6489623B1 (en) * 2000-11-07 2002-12-03 Global Nuclear Fuel -- Americas, Llc Shipping container for radioactive materials and methods of fabrication
JP4064646B2 (ja) * 2001-06-29 2008-03-19 三菱重工業株式会社 放射性物質の密閉容器、密閉容器の密閉溶接方法、および密閉溶接方法に用いる排気装置
KR100473389B1 (ko) * 2002-04-26 2005-03-08 한국수력원자력 주식회사 방사성 물질 저장 및 운반 용기
US6788755B2 (en) 2002-06-14 2004-09-07 American Crane & Equipment Corporation Safe lift and process for transporting canisters of spent nuclear fuel
US6674828B1 (en) 2002-06-14 2004-01-06 David P. Weber Safe lift and process for transporting canisters of spent nuclear fuel
RU2251165C2 (ru) * 2003-07-14 2005-04-27 Военная академия Ракетных войск стратегического назначения им. Петра Великого Устройство для транспортировки и/или хранения взрыво-, радиационно и токсикологически опасного груза
DE102004006620A1 (de) * 2004-02-10 2005-08-25 Framatome Anp Gmbh Lagertransportsystem und Verfahren zum Lagern und zum Transport von radioaktiven Abfällen
DE102004036788B3 (de) * 2004-07-29 2006-03-16 GNS Gesellschaft für Nuklear-Service mbH Transport- und/oder Lagerbehälter für radioaktive Abfälle
DE202006008071U1 (de) * 2006-05-19 2006-07-20 Seda S.P.A., Arzano Behälter
DE102007016141A1 (de) * 2007-04-02 2008-10-09 Evonik Energy Services Gmbh Behältersystem zur Aufnahme radioaktiver Abfälle
KR101040250B1 (ko) * 2009-03-05 2011-06-09 삼영에스엠주식회사 의료용 방사성 캡슐의 납용기
US11515056B2 (en) 2015-10-16 2022-11-29 Holtec International Nuclear waste storage canisters, welds, and method of fabricating the same
CN109256229B (zh) * 2018-09-20 2023-10-31 原子高科股份有限公司 一种双盖密封转运设备
CN113168926B (zh) 2018-11-29 2024-09-06 霍尔泰克国际公司 乏核燃料罐
ES2940568B2 (es) * 2021-11-04 2024-12-30 Ingecid Investig Y Desarrollo De Proyectos S L Contenedor para residuos radioactivos
CN115639735B (zh) * 2022-11-02 2025-01-10 东南大学 一种可自由观看的大尺寸全息显示系统

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US4582668A (en) * 1983-07-15 1986-04-15 Westinghouse Electric Corp. Waste container closure mechanism
DE3331892C2 (de) * 1983-09-03 1986-01-23 Kernforschungsanlage Jülich GmbH, 5170 Jülich Transport- und Lagerbehälter für radioaktives Material
DE3503641A1 (de) * 1984-07-24 1986-02-06 Nationale Genossenschaft für die Lagerung radioaktiver Abfälle - NAGRA, Baden Verfahren zum schliessen eines behaelters zur aufnahme von radioaktivem material und behaelter zur durchfuehrung des verfahrens
US4636645A (en) * 1984-10-31 1987-01-13 Westinghouse Electric Corp. Closure system for a spent fuel storage cask

Also Published As

Publication number Publication date
US4818878A (en) 1989-04-04
DE3639653C2 (enrdf_load_stackoverflow) 1990-12-13
JPS63144299A (ja) 1988-06-16
DE3639653A1 (de) 1988-06-23
DE3770775D1 (de) 1991-07-18
KR880006714A (ko) 1988-07-23
KR920007745B1 (ko) 1992-09-16
BR8706417A (pt) 1988-07-12
EP0269896A1 (de) 1988-06-08

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