EP0031879B1 - Einrichtung zum Einbetonieren von radioaktiven Abfällen in Abfallfässern - Google Patents

Einrichtung zum Einbetonieren von radioaktiven Abfällen in Abfallfässern Download PDF

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Publication number
EP0031879B1
EP0031879B1 EP80106603A EP80106603A EP0031879B1 EP 0031879 B1 EP0031879 B1 EP 0031879B1 EP 80106603 A EP80106603 A EP 80106603A EP 80106603 A EP80106603 A EP 80106603A EP 0031879 B1 EP0031879 B1 EP 0031879B1
Authority
EP
European Patent Office
Prior art keywords
plate
cell
drum
cylinder
shielding
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
Application number
EP80106603A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0031879A1 (de
Inventor
Günter Dr. Höhlein
Wilhelm Hempelmann
Günter Waldenmeier
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.)
Forschungszentrum Karlsruhe GmbH
Original Assignee
Kernforschungszentrum Karlsruhe GmbH
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 Kernforschungszentrum Karlsruhe GmbH filed Critical Kernforschungszentrum Karlsruhe GmbH
Priority to AT80106603T priority Critical patent/ATE6890T1/de
Publication of EP0031879A1 publication Critical patent/EP0031879A1/de
Application granted granted Critical
Publication of EP0031879B1 publication Critical patent/EP0031879B1/de
Expired 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
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/008—Apparatus specially adapted for mixing or disposing radioactively contamined material
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/04—Treating liquids
    • G21F9/06—Processing
    • G21F9/16—Processing by fixation in stable solid media
    • G21F9/162—Processing by fixation in stable solid media in an inorganic matrix, e.g. clays, zeolites
    • G21F9/165—Cement or cement-like matrix
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/28—Treating solids
    • G21F9/30—Processing
    • G21F9/301—Processing by fixation in stable solid media
    • G21F9/302—Processing by fixation in stable solid media in an inorganic matrix
    • G21F9/304—Cement or cement-like matrix

Definitions

  • the present invention relates to a device for concreting in radioactive waste in waste barrels, the mixture components being added to the barrel and the concrete formation after mixing takes place directly in the same, with a shielded and alpha-tight cell to which the loading opening of the empty barrel is opened by means of an opening in the Cell bottom can be connected and the opening can be closed by means of a double cover which can be swiveled away, with a hollow shielding cylinder protruding into the cell from the top of the cell, in the interior of which the mixing tools are located when they are pulled out of the barrel and for mixing down into the barrel from the cylinder can be lowered out or raised in it again.
  • the present invention has for its object to provide a simple and safe to use system for concreting or cementing radioactive waste in barrels, in which radioactive substances such.
  • B. ion exchange resins, sludges and concentrates can be fixed without inadmissibly high dose rates occurring during maintenance and repair work.
  • this maintenance and repair work should be carried out as quickly as possible in order to increase the availability of such a system. It is particularly advantageous if the maintenance work can also be carried out while the system is in operation.
  • the present invention proposes, in a device of the type mentioned at the outset, that a shielding plate is mounted in the cylinder in a vertically sliding manner, sealing its upper surface with respect to the cylinder, on which the drive for the mixing tools sits, and that another on the plate Drive is seated, by means of which a central part receiving the mounting of the mixing tools and rotatably mounted in the plate can be rotated about its central axis such that a bellows enclosing the drive is attached at one end to the guide ring forming the upper displacement and bearing of the plate.
  • the bellows being attached to the upper inner edge of a hollow sheet metal hat which is open on its upper side and which sits on the base plate, and that lifting elements for the Lowering or lifting movement of the mixing tools holding plate above it, i.e. are located outside the shield from the contaminated interior of the cell.
  • the present invention now makes it possible in a particularly advantageous manner to create a concreting or cementing system in which contamination-protected parts of modules that can be installed and removed in a simple manner are used.
  • These modules such as. B. the agitator drive and the double cover drive can be serviced and repaired outside the contaminated and radiating area under normal conditions. This significantly reduces the downtimes of such a system, ie increases its availability and cost-effectiveness, and also significantly reduces the radiation exposure during interventions. The necessary working hours for decontamination are reduced. It is possible to manufacture individual components in the form of individual modules, which can be removed and installed as desired NEN, so that a much easier and safer operation can be carried out.
  • the cementing or concreting of radioactive waste is basically carried out in a known manner by placing dry cement in a waste drum.
  • This waste barrel is closed with the lower part of a double lid and pressed against a table of a hot cell or an alpha-tight glove box.
  • the barrel is now opened using a double-lid system and radioactive material is added to its free opening using a hose or a tube.
  • a counter-rotating planetary mixer is inserted into the drum, which mixes the dry cement with the concentrate.
  • the entire agitator drive as well as the lifting device and rotating device for the agitator are located in the highly contaminated cell.
  • a waste container (not shown in more detail) with pre-metered cement is now connected to the shielded cell 1 via the opening 16 in the base plate 27, which is closed with the upper part 15 of a double lid in the position shown.
  • the radioactive waste is then introduced into the barrel in the manner mentioned at the beginning and with the aid of the device described below, i.e. a barrel mixer that can be lowered into the barrel, mixed in the barrel.
  • the actual mixing device is now structured as follows:
  • a shielding tube 2 is flanged out from above.
  • the stirring tools 3 are located in this shielding tube 2, which are shielded upwards against the couplings 5 by a removable spray plate 4.
  • a shielding plate 6 is movably guided in the tube from top to bottom, the middle part 7 of which is provided with bushings for the agitator drive and the middle part 7 is rotatably arranged in the shielding plate 6 with the aid of bearings.
  • the actual agitator drive 8 or 9 is located above the central part 7.
  • the fixed part of the planetary drive is connected to the shielding plate 6 and the movable part of the same is connected to the central part 7, so that the parts 8 and 7 rotate and move in the same direction can.
  • the stirring tools 3 can jointly perform a circular movement about the axis 17 by rotating the central part 7.
  • the agitating tools are driven by the agitator drive 9.
  • the planetary ring or the rotation of the central part 7 is driven by a geared motor 10.
  • the entire unit can be the agitators 3 with complete drive are moved up and down within the tube 2 with the aid of lifting cylinders or lifting spindles 11, so that the mixer plunges into the barrel (not shown), carries out a mixing movement about the axes of the mixing tools 3 and, together, performs a circular movement the barrel is led.
  • the shielding tube 2 with the complete unit can also be pulled out of the shielded cell 1 for maintenance purposes.
  • the guide ring 22 which slides therein and which is firmly connected to the shielding plate 6 serves to guide the unit in the tube 2.
  • a bellows 13 is attached to the shielding plate 6 or to the ring 22, which is pushed together at top dead center and pulled apart at bottom dead center.
  • This bellows 13 sits with its lower end 30 on the guide ring 22 and with its upper end 31 on the inner edge 32 of a hollow sheet metal hat 33 which is open at the top.
  • the sheet metal hat 33 in turn sits with its base on a base plate 34 which is placed directly on the cell top 35 and carries the cylinder 2 downwards.
  • the bellows 13 in the sheet metal hat 30 now encloses the entire drive 8, 9, 10, 11 of the mixing device. Since the hat 30 is open at the top, this entire drive 8, 9, 10, 11 can be removed or pulled up out of the hat opening 35 after detaching from the plate 6, 7 without impairing the shielding effect.
  • this or its pivot arm 28 is provided with a removable plate 14, which is in the closed position of the double cover 15 underneath the stirring tools 3. If the plate 14 is filled with dried cement broth, the waste barrel located below it is thrown through the opening 16 and added to the waste.
  • the pivotable double cover 15, like the agitator drive, is designed in such a way that all drive elements are located outside the cell 1 and specifically under the base plate 27 of the cell 1.
  • the rotary drive 18 and the lifting drive 19 for the double cover 15, which can be pivoted on the arm 28 about the axis 29, is located under the cell 1 and can be serviced there at any time.
  • the indexing of the closed position of the double cover 19 is carried out by an indexing device 20, which is located outside the cell space 24. In this way, all drive elements on which faults and maintenance work can occur can be serviced and repaired from the outside in non-contaminated rooms.
  • the actual stirrer drive is thus used as radiation protection put plate 7 protected against the work area or the interior 24 of the cell.
  • the entire drive part is protected from contamination by the bellows 13. It is favorable that, in the event of a major defect, the entire drive, including the stirring tools 3, can be removed from the interior 24 of the cell 1 by pulling out the entire unit in the tube 2 and can be transported to another room set up for this purpose. The unit can then be replaced by a reserve unit. The entire unit is held or centered in its bottom dead center or in the retracted state by means of the guide bolts 12 such that twisting and vibrating is impossible during operation.
  • the actual double lid 15 is protected by the drip plate 14 against contamination by dripping cement broth.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
EP80106603A 1979-12-20 1980-10-28 Einrichtung zum Einbetonieren von radioaktiven Abfällen in Abfallfässern Expired EP0031879B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80106603T ATE6890T1 (de) 1979-12-20 1980-10-28 Einrichtung zum einbetonieren von radioaktiven abfaellen in abfallfaessern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2951375 1979-12-20
DE19792951375 DE2951375A1 (de) 1979-12-20 1979-12-20 Einrichtung zum einbetonieren von radioaktiven abfaellen in abfallfaessern

Publications (2)

Publication Number Publication Date
EP0031879A1 EP0031879A1 (de) 1981-07-15
EP0031879B1 true EP0031879B1 (de) 1984-03-28

Family

ID=6089067

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80106603A Expired EP0031879B1 (de) 1979-12-20 1980-10-28 Einrichtung zum Einbetonieren von radioaktiven Abfällen in Abfallfässern

Country Status (4)

Country Link
EP (1) EP0031879B1 (enrdf_load_stackoverflow)
JP (1) JPS56160700A (enrdf_load_stackoverflow)
AT (1) ATE6890T1 (enrdf_load_stackoverflow)
DE (1) DE2951375A1 (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2557473B1 (fr) * 1984-01-03 1989-08-18 Lumpp Henry Dispositif pour l'enrobage de particules
FR2569994B1 (fr) * 1984-09-13 1986-11-21 Technicatome Dispositif de melange mobile
FR2728719A1 (fr) * 1994-12-22 1996-06-28 Rtc Realisations Tech Et Comme Procede et installation pour le traitement des residus radioactifs sous forme de boues
CN109378098B (zh) * 2018-09-20 2023-12-19 原子高科股份有限公司 一种双盖锁紧机构

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2637859A1 (de) * 1976-08-23 1978-03-02 Kernforschung Gmbh Ges Fuer Einrichtung zum einbetonieren von radioaktiven abfaellen in abfallfaesser
FR2428304A1 (fr) * 1978-06-09 1980-01-04 Sgn Soc Gen Tech Nouvelle Dispositif pour le conditionnement des dechets toxiques

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3932979A (en) * 1971-09-20 1976-01-20 Stock Equipment Company Apparatus for inserting closure means into a container
DE2421142A1 (de) * 1974-05-02 1975-11-13 Elba Werk Maschinen Gmbh & Co Verfahren und vorrichtung zur beseitigung radioaktiver abfaelle
DE2637858A1 (de) * 1976-08-23 1978-03-02 Kernforschung Gmbh Ges Fuer Verfahren zum einbetonieren von radioaktiven abfaellen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2637859A1 (de) * 1976-08-23 1978-03-02 Kernforschung Gmbh Ges Fuer Einrichtung zum einbetonieren von radioaktiven abfaellen in abfallfaesser
FR2428304A1 (fr) * 1978-06-09 1980-01-04 Sgn Soc Gen Tech Nouvelle Dispositif pour le conditionnement des dechets toxiques

Also Published As

Publication number Publication date
ATE6890T1 (de) 1984-04-15
JPS56160700A (en) 1981-12-10
DE2951375C2 (enrdf_load_stackoverflow) 1987-06-11
JPH0140319B2 (enrdf_load_stackoverflow) 1989-08-28
DE2951375A1 (de) 1981-07-02
EP0031879A1 (de) 1981-07-15

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