EP0341139A1 - Verfahren zur Verpackung radioaktiver Abfälle und Vorrichtungen zur Ausführung des Verfahrens - Google Patents

Verfahren zur Verpackung radioaktiver Abfälle und Vorrichtungen zur Ausführung des Verfahrens Download PDF

Info

Publication number
EP0341139A1
EP0341139A1 EP89401206A EP89401206A EP0341139A1 EP 0341139 A1 EP0341139 A1 EP 0341139A1 EP 89401206 A EP89401206 A EP 89401206A EP 89401206 A EP89401206 A EP 89401206A EP 0341139 A1 EP0341139 A1 EP 0341139A1
Authority
EP
European Patent Office
Prior art keywords
waste
liners
compacted
coating
jacket
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
EP89401206A
Other languages
English (en)
French (fr)
Other versions
EP0341139B1 (de
Inventor
Gérard Streiff
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 EP0341139A1 publication Critical patent/EP0341139A1/de
Application granted granted Critical
Publication of EP0341139B1 publication Critical patent/EP0341139B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/32—Presses specially adapted for particular purposes for consolidating scrap metal or for compacting used cars
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/28—Treating solids
    • G21F9/34—Disposal of solid waste
    • G21F9/36—Disposal of solid waste by packaging; by baling

Definitions

  • the present invention relates to the field of conditioning radioactive waste, with a view to its storage and preservation which constitutes, as is known, one of the important problems of the nuclear industry.
  • the present invention relates precisely to the compaction technique and it applies to all the waste the volume of which it is desired to reduce by this technique, in particular to the hulls originating from the cutting of combustible needles of a nuclear reactor.
  • the hulls are pieces of tubes that have contained fissile material. To extract and dissolve this material, the needles that constitute the fuel assembly are sheared and then placed in a dissolver. After dissolving the fissile material, the empty shells are evacuated for storage. They constitute what is called waste. They can also contain other elements such as plugs, pieces of springs, used in the composition of the fuel needle of the nuclear reactor. This waste may also contain small pieces of tubes from the shearing and called "shearing fines".
  • the compacting technique partially solves the problem of the volume necessary for the storage of waste, but nevertheless leaves two other equally important problems which are the cooling or the coating of this same waste.
  • compaction by concentrating the radioactive mass which heats itself and making it practically monolithic, makes its cooling more difficult, for example by the water of a storage pool.
  • compaction and coating especially at the heart of the compacted mass, are, to date, relatively incompatible.
  • the subject of the present invention is precisely a process and devices for conditioning radioactive waste which, while resorting to the compaction technique, make it possible to obtain a compacted mass which is not entirely monolithic and therefore penetrable by a liquid phase which can be, depending on the case, either a coolant, or a coating body which can then completely penetrate the mass to the heart.
  • the waste conditioning process radioactive in particular of the kind of the bodies coming from the cutting of the fuel needles of nuclear reactor, is characterized in that it consists in compacting them without reaching the monolithic state then in treating then the mass thus obtained by immersion in a liquid phase which penetrates to the core to obtain either its cooling or its coating.
  • the coating product is a blocking product chosen from cements, resins and metals.
  • the device according to the invention comprises a cylindrical jacket, the side walls of which are pierced with openings of passage cross section smaller than that of the waste to be compacted, and have the form of longitudinal slots, parallel to the direction of compression, said jacket having a bottom closed at one end and having at the other end an opening for the introduction of said waste into the body, this opening having radial strips directed towards its center and forming a daisy.
  • the jacket is made of a material having a lubricating power intended to facilitate the action of the press and the material having a lubricating power is for example copper or a copper-based alloy.
  • the invention also relates to a storage device for coating or cooling the compacted waste according to the method of claim 1, characterized in that it comprises: a cylindrical body closed at one end and having another open end for the introduction inside the body of compacted liners containing said irradiated combustible waste, centering means for centering said shirts inside the body, - non-return means for immobilizing the liners inside the body, - Means for facilitating the circulation of a liquid cooling or coating phase inside the body.
  • the shirt allows easy handling of waste. It also makes it possible to lubricate the press die, particularly if the jacket is made of a material having a lubricating power such as copper or a copper alloy or any other lubricating material. This shirt limits wear on the matrix.
  • the longitudinal slots prevent, when filling before compaction, that the waste can escape from the jacket. However, after compaction, the slots open to allow the circulation of a coolant within the block or the penetration into the heart of a binder. After compacting, the small waste trapped in the compacted block will not be able to escape, but the longitudinal slots which have opened and which are called buttonholes will allow the circulation of the liquid or the penetration of the binder.
  • the storage device which is the subject of the invention allows the cooling or coating of the waste contained in the liners. Thanks to the presence of means for centering the liners, the coolant or the coating binder may regularly surround the liners. The flexibility of the centering means also allows a variation in the diameter of the liners introduced into the storage device.
  • FIG. 1 An external view of a jacket according to the invention for the compaction of waste, in particular of spent nuclear fuel waste.
  • the jacket designated by the general reference 1 is constituted by a cylindrical body 2 closed by a bottom 4 at one end and open at its other end, the upper end in FIG. 1.
  • the body 2 consists of a wall thin, preferably metallic, made of a material having a lubricating power such as copper or a copper alloy.
  • the cylindrical body 2 has longitudinal openings 6 in the form of slots, parallel to the axis of the future compression (fig. 2). This form is particularly advantageous.
  • the slots 6 when the jacket is in the initial state, that is to say not deformed, before compacting, the slots 6 have an elongated shape whose cross section is less than the smallest dimension of the waste to be compact. Thus, the slots 6 allow the waste to be retained inside the body 2.
  • the longitudinal slots 6 open to form buttonholes 6a (FIG. 3) which allow the passage of a refrigeration fluid or a coating material.
  • buttonholes 6a FIG. 3
  • the upper opening of the jacket is constituted by a daisy 8.
  • the radial strips 10 are spaced from one another and between these strips there is a space allowing the filling of the shirt. Once the shirt is filled, it is easy to close the daisy 8 so that all the slats, which have a sector shape, are folded and joined, which allows to close the shirt completely.
  • FIG. 2 shows the step of compacting the jacket 1 filled and closed in a matrix 22 using the jack 23.
  • the jacket 1 is for example made of copper to lubricate the matrix and in FIG. 2 the slots longitudinal 6 begin to open under the effect of the pressure of the cylinder 23 causing a start of compaction.
  • the material constituting the jacket makes it possible to lubricate the die of the press, particularly if this material has a lubricating power such as copper or a copper alloy or other lubricating material.
  • This characteristic facilitates the introduction of the shirt into the matrix.
  • it reduces the coefficient of friction between the outside of the jacket and the body of the matrix, which has the advantage of reducing the compression force and of limiting the wear of the matrix.
  • it facilitates the extraction of the compacted jacket and therefore reduces the risk of disintegration of the block.
  • the compressive force exerted longitudinally tends to crease the cylindrical body of the jacket and to move the lifts away from the longitudinal slots 6.
  • the slots 6a are open but the small waste, trapped in the compacted block, can not escape.
  • the open slots 6a then in the form of buttonholes will allow the subsequent circulation or penetration of the binder.
  • FIG. 3 shows the state of the jacket 1 after compaction.
  • the longitudinal dimension of this jacket has been reduced to about a quarter of its initial dimension and the slots 6 are now in the form of open buttonholes 6a allowing the penetration into the heart of the compacted mass of a liquid phase brought later.
  • the compaction is stopped at a stage where the compacted waste does not yet constitute a monolithic mass, which, in any case, is also desirable, to avoid having to exercise on the jack 23 too much effort.
  • the jackets can be introduced into a storage device 21 shown in FIG. 4.
  • This device comprises an elongated cylindrical body 12 closed by a bottom 14 and having an opening 16 at its upper part according to Figure 4.
  • centering means such as 18.
  • These centering means consist of flexible elements fixed on the inner wall of the cylinder 12.
  • a coolant or a coating binder admitted into the device, can it regularly surround the liners 1 and penetrate them to the core.
  • the flexibility of the centering elements 18 also allows a variation in the diameter of the sleeves introduced.
  • non-return means 20 Near the opening 16, there is a non-return means 20.
  • This non-return means also consists of flexible elements fixed to the inner wall of the body 12.
  • centering elements 18 can also provide a non-return function.
  • these elements do not meet the outer cylindrical wall of the jacket 1, due to their flexibility, they occupy the position shown at 20 in FIG. 4 and come to bear on the upper end of the jacket 1, preventing thus this liner to move axially in the longitudinal direction of the storage device 21.
  • the liners are kept inside this device 21.
  • the means non-return also prevent the shirts from floating in the binder as a result of Archimedes' push when the coating binder used has a density greater than that of the compacted shirts.
  • This device applies regardless of the number of liners introduced and accepts variations in height and diameter of the compacted liners.
  • a storage device 21 provided with its compacted liners, is immersed in a liquid of cooling (a swimming pool for example) or filled with a coating liquid (molten lead for example) through its opening 16, this liquid then penetrates by itself in a few moments, to the heart of the material with which it fills the interstices left empty by the non-monolithic compaction of each liner.
  • a liquid of cooling a swimming pool for example
  • a coating liquid molten lead for example
  • the bottom 14 of the storage device 12 may be non-sealed (or provided with a valve for example - not shown in Figure 4) to facilitate the circulation of the coolant to inside the body 12, thus further improving the core cooling of the compacted liners 1.
  • FIG. 5 shows, on a section of a compacted and coated jacket, the shells such as 24 crushed in the mass and embedded in the coating material 25.
  • This drawing also shows the crushing of the body 2 of copper of the shirt 1 with the openings 6a in the form of buttonholes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Processing Of Solid Wastes (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
EP19890401206 1988-05-03 1989-04-27 Verfahren zur Verpackung radioaktiver Abfälle und Vorrichtungen zur Ausführung des Verfahrens Expired - Lifetime EP0341139B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8805911 1988-05-03
FR8805911A FR2631151B1 (fr) 1988-05-03 1988-05-03 Chemise pour dechets a compacter et conteneur pour cette chemise

Publications (2)

Publication Number Publication Date
EP0341139A1 true EP0341139A1 (de) 1989-11-08
EP0341139B1 EP0341139B1 (de) 1993-03-17

Family

ID=9365930

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890401206 Expired - Lifetime EP0341139B1 (de) 1988-05-03 1989-04-27 Verfahren zur Verpackung radioaktiver Abfälle und Vorrichtungen zur Ausführung des Verfahrens

Country Status (4)

Country Link
EP (1) EP0341139B1 (de)
JP (1) JP2862899B2 (de)
DE (1) DE68905368D1 (de)
FR (1) FR2631151B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2842939A1 (fr) * 2002-07-24 2004-01-30 Jean Claude Henri Claire Dispositif de centrage et d'immobilisation de dechets radioactifs destine au colissage prealable a leur stockage

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100783583B1 (ko) * 2005-02-12 2007-12-07 조경연 원전수거물 처리장치와 그 제조방법 및 그에 따른 설치방법
JP5553986B2 (ja) * 2008-12-18 2014-07-23 三菱重工業株式会社 廃棄物容器

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2584854A1 (fr) * 1985-07-09 1987-01-16 Commissariat Energie Atomique Procede et installation de compactage et de conditionnement de dechets solides radio-actifs de faible ou moyenne activite.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2584854A1 (fr) * 1985-07-09 1987-01-16 Commissariat Energie Atomique Procede et installation de compactage et de conditionnement de dechets solides radio-actifs de faible ou moyenne activite.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2842939A1 (fr) * 2002-07-24 2004-01-30 Jean Claude Henri Claire Dispositif de centrage et d'immobilisation de dechets radioactifs destine au colissage prealable a leur stockage

Also Published As

Publication number Publication date
DE68905368D1 (de) 1993-04-22
EP0341139B1 (de) 1993-03-17
FR2631151A1 (fr) 1989-11-10
JP2862899B2 (ja) 1999-03-03
FR2631151B1 (fr) 1991-02-15
JPH01320498A (ja) 1989-12-26

Similar Documents

Publication Publication Date Title
EP0076204B1 (de) Vorrichtung zur Neutronenabschirmung im oberen Teil eines Brennstabbündels eines Kernreaktors
EP1928600A1 (de) Anordnung zum verpacken eines vorbestimmten stoffvolumens zur aufbewahrung durch kryogene verglasung
FR2683375A1 (fr) Reacteur nucleaire equipe d'un dispositif de recuperation du cóoeur, apres sa fusion accidentelle.
EP0320393B1 (de) Verfahren zur unterirdischen Lagerung von Abfällen in einem durch Salzauslaugen geschaffenen Hohlraum
EP0105002B1 (de) Verfahren und Vorrichtung zur Lagerung von biegsamen, kontaminierten Materialien durch Kompaktierung
EP0388253B1 (de) Belade- und Sicherheitswasservorlagebecken für einen Druckwasserkernreaktor
EP0341139B1 (de) Verfahren zur Verpackung radioaktiver Abfälle und Vorrichtungen zur Ausführung des Verfahrens
EP3234948A1 (de) Brennelementbündel für einen sfr kernreaktor, mit einem gehäuse mit lösbar befestigter oberer neutronenabschirmungsvorrichtung
FR2763168A1 (fr) Reacteur nucleaire a eau, dont la cuve contient un dispositif de recuperation du coeur apres sa fusion accidentelle
FR2682803A1 (fr) Procede et dispositif pour prelever une eprouvette dans la cuve d'un reacteur nucleaire en arret definitif.
FR2784784A1 (fr) Reacteur nucleaire a eau a receptacle integre
EP2862180B1 (de) Optimiertes verfahren zum laden von radioaktiven elementen in eine verpackung
FR2572213A1 (fr) Chateau de stockage de combustible nucleaire epuise
EP0446152A1 (de) Paket zum Einführen von Leichtmetall in Aluminiumlegierungsschmelze
FR2670051A1 (fr) Procede et dispositif de fabrication d'un support d'electrolyte solide et support d'electrolyte solide obtenu par ce procede.
WO1994015775A1 (fr) Compactage de dechets metalliques susceptibles de s'enflammer et/ou d'exploser
EP2490842A1 (de) Verfahren zur herstellung eines metallblocks mit einer bohrung sowie entsprechender metallblock und pressform
EP1042746B1 (de) Herstellungsverfahren eines identifikationskerns für ultraschallsiegel
FR2467466A1 (fr) Colonne a extraction pour matiere de fission et/ou matiere fertile
FR2584854A1 (fr) Procede et installation de compactage et de conditionnement de dechets solides radio-actifs de faible ou moyenne activite.
FR2715433A1 (fr) Dispositif pour la mise en place de matériaux dans un puits de forage.
EP0011005B1 (de) Probenahmekopf für Kühlmittel eines Kernreaktors
FR2636772A1 (fr) Installation de compactage de dechets comportant une presse integree dans les parois d'une cellule blindee
EP0877388B1 (de) Anordnung zum dichten Verschluss von Mehrzweck-Behältern zum Einschluss von bestrahlten Kernbrennstabbündeln oder hochaktiven Müllstoffen
FR3085531A1 (fr) Structure etanche pour assemblage de maitrise de la reactivite de reacteur nucleaire a neutrons rapides

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

Kind code of ref document: A1

Designated state(s): BE DE FR GB

17P Request for examination filed

Effective date: 19900414

17Q First examination report despatched

Effective date: 19920519

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE FR GB

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

Ref country code: DE

Effective date: 19930317

REF Corresponds to:

Ref document number: 68905368

Country of ref document: DE

Date of ref document: 19930422

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

Ref country code: BE

Effective date: 19930430

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19930526

BERE Be: lapsed

Owner name: COMMISSARIAT A L'ENERGIE ATOMIQUE ETABLISSEMENT D

Effective date: 19930430

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

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20010425

Year of fee payment: 13

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

Ref country code: FR

Payment date: 20010426

Year of fee payment: 13

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020427

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20020427

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

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20021231

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST