EP0888623B1 - Method for preparing highly radioactive materials for transmutation and/or burn-up - Google Patents

Method for preparing highly radioactive materials for transmutation and/or burn-up Download PDF

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Publication number
EP0888623B1
EP0888623B1 EP97908208A EP97908208A EP0888623B1 EP 0888623 B1 EP0888623 B1 EP 0888623B1 EP 97908208 A EP97908208 A EP 97908208A EP 97908208 A EP97908208 A EP 97908208A EP 0888623 B1 EP0888623 B1 EP 0888623B1
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Prior art keywords
impregnation
liquid
pellets
materials
transmutation
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Expired - Lifetime
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EP97908208A
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German (de)
French (fr)
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EP0888623A1 (en
Inventor
Claude Fuchs
Serge Fourcaudot
Karl Richter
Joseph Somers
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European Atomic Energy Community Euratom
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European Atomic Energy Community Euratom
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    • 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
    • G21F9/14—Processing by incineration; by calcination, e.g. desiccation
    • 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
    • G21F9/32—Processing by incineration

Definitions

  • the invention relates to a method for Preparation of highly radioactive substances for transmutation and / or combustion by radiation in a nuclear facility.
  • transmutation and combustion of highly radioactive Substances are used especially in the context of nuclear disposal used.
  • radioactive materials are significantly reduced Half-life that their radiological danger in manageable Lose periods, or substances with less radiologically dangerous radiation.
  • the object of the invention is therefore a method to indicate, with no or hardly any toxic dust arises and a very homogeneous distribution of the highly radioactive Fabrics is reached so that hot spots when irradiated be avoided.
  • this object is achieved by a method solved as defined in claim 1 and substantially consists of a suitable porous support material with the highly radioactive brought into liquid form Soak fabrics.
  • the carrier material is powdered or is present in particulate form, it is preferably after the impregnation pressed into pellets.
  • the backing material lies already in pellet form before the impregnation, then it is beneficial degas this before the impregnation in order to achieve an even Distribution of the radioactive material in the carrier material to facilitate.
  • Powders, granulate particles can be used as the porous carrier material or microspheres can be used, such as Oxides of uranium, plutonium, thorium, yttrium, cerium and mixtures of these and other oxides, e.g. Spinel and YAG (yttrium aluminum garnet).
  • Oxides of uranium, plutonium, thorium, yttrium, cerium and mixtures of these and other oxides e.g. Spinel and YAG (yttrium aluminum garnet).
  • Oxides of uranium, plutonium, thorium, yttrium, cerium and mixtures of these and other oxides e.g. Spinel and YAG (yttrium aluminum garnet).
  • this list is by no means exhaustive and depends on the type of transmutated or substances to be burned. Also carbides and Nitrides of the mentioned and other elements may come in Question.
  • the carrier material must be sufficiently porous in order to to be soaked in this liquid substance. Moreover may this carrier material in the impregnation by the liquid substance can not be solved essentially.
  • the mechanical shape of the carrier material depends on the desired Degree of impregnation. Powders and granules are possible that arose from precipitation or transformation processes are microspheres that are caused by a drop Particle conversion processes (sol-gel) were produced, or moldings made from powders, granules or microspheres were compressed.
  • Impregnation pressed from the carrier material in powder form pellets and pre-burned.
  • Such pellets have a porosity of about 40% and can easily be soaked. In the simplest Case they are in a melt or solution of the highly radioactive material immersed. You put them in a defined position on a grid and dips it slowly into the liquid. The impregnation rate depends on the Dimension of the pores, viscosity and surface tension the liquid, the wettability of the pellet material and the duration of the impregnation.
  • the impregnation only reaches the outer layer of the pellets. This can be achieved through a suitable choice of Impregnation time, so that the impregnation only up to a certain Depth in the pellets. You can also get one for the liquid impermeable protective layer on one part Apply the surface of the pellet to this point to prevent the penetration of the liquid and thus a central cylindrical, inaccessible due to the impregnation Get core in the pellets. This has the advantage that gap energy when irradiating the highly radioactive Substances in the nuclear plant are preferred on the pellet surface occurs as heat and can be easily dissipated, while the solid core of the pellet prevents this disintegrates.
  • the pellet After soaking, it can be in liquid form in the pellet present highly radioactive substance through a heat treatment converted to a desired shape (e.g. oxide, nitride or carbide) what can be sintered.
  • a desired shape e.g. oxide, nitride or carbide
  • the carrier material as mentioned consist of microspheres, e.g. to are produced using the sol-gel process. Because of their high Porosity (about 80%) are particularly good if a very intensive impregnation is desired. So you can get one Fill the cylindrical column with the microspheres and then add a nitrate solution of the highly radioactive substance. The Dimensions of the column are chosen so that no critical Conditions arise. After impregnation becomes the remaining nitrate solution of the radioactive substance pumped back into a storage tank. The one in the beads remaining part of this substance is then converted into an oxide, Nitride or carbide is transformed. This conversion takes place in a suitable atmosphere in standard ovens or with Using microwaves. Then the beads are in the desired form for radiation in the nuclear facility pressed.
  • Soaking the beads and their subsequent Pressing into the pellet form can be done completely automatically, so that workers are not exposed to additional radiation are at risk. This process also creates no dust from highly toxic substances.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Saccharide Compounds (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)

Abstract

The invention concerns a method of preparing highly radioactive materials for transmutation and/or burn-up by irradiation in a nuclear plant. The invention proposes that the materials are first converted into liquid form by melting or chemical dissolution and a porous carrier material which is essentially insoluble in the liquefied materials is impregnated with the liquefied materials and then heated in such a way that the materials are converted into the finally required chemical form and density.

Description

Die Erfindung bezieht sich auf ein Verfahren zur Vorbereitung von hochradioaktiven Stoffen für eine Transmutation und/oder Verbrennung durch Bestrahlung in einer Nuklearanlage.The invention relates to a method for Preparation of highly radioactive substances for transmutation and / or combustion by radiation in a nuclear facility.

Die Transmutation und Verbrennung von hochradioaktiven Stoffen werden insbesondere im Rahmen der nuklearen Entsorgung eingesetzt. Als Ergebnis der Transmutation und Verbrennung werden radioaktive Stoffe mit deutlich verringerter Halbwertzeit, die ihre radiologische Gefährlichkeit in überschaubaren Zeiträumen verlieren, oder Stoffe mit geringerer radiologisch gefährlicher Strahlung erzeugt.The transmutation and combustion of highly radioactive Substances are used especially in the context of nuclear disposal used. As a result of transmutation and combustion radioactive materials are significantly reduced Half-life that their radiological danger in manageable Lose periods, or substances with less radiologically dangerous radiation.

Es wäre nun möglich, ähnlich den Prozessen bei der Herstellung von Kernbrennstoffen die zu transmutierenden oder zu verbrennenden Stoffe in Pulverform zu bringen, mit inaktiven Pulvern zu vermischen, zu Tabletten (Pellets, Targets) zu verpressen und in Hüllrohre zu verschweißen, die dann zur Transmutation oder Verbrennung in eine Nuklearanlage eingesetzt werden. Bei diesem Verfahren entsteht jedoch ein radiologisch hochgiftiger Staub, der sich in den heißen Zellen oder Handschuhkästen niederschlägt und eine zusätzliche Strahlenbelastung für die in diesem Bereich tätigen Beschäftigten darstellt. Außerdem besteht die Gefahr einer unvollkommenen Vermischung der Pulver und damit von Heißpunkten bei der anschließenden Bestrahlung in der Nuklearanlage, die zu einem vorzeitigen Abbruch des Transmutations- bzw. Verbrennungsvorgangs zwingen können.It would now be possible, similar to the processes at the Production of nuclear fuels to be transmuted or to bring substances to be burned in powder form with to mix inactive powders into tablets (pellets, targets) to press and weld in cladding tubes, the then for transmutation or combustion in a nuclear facility be used. However, this procedure creates a radiologically highly toxic dust that is in the hot Cells or glove boxes and an additional one Radiation exposure for employees working in this area represents. There is also a risk of imperfect mixing of the powder and thus of hot spots during the subsequent radiation in the nuclear facility, leading to an early termination of the transmutation or can force combustion process.

Aufgabe der Erfindung ist es daher, ein Verfahren anzugeben, bei dem gar kein oder kaum ein giftiger Staub entsteht und eine sehr homogene Verteilung der hochradioaktiven Stoffe erreicht wird, so daß Heißpunkte bei der Bestrahlung vermieden werden.The object of the invention is therefore a method to indicate, with no or hardly any toxic dust arises and a very homogeneous distribution of the highly radioactive Fabrics is reached so that hot spots when irradiated be avoided.

Diese Aufgabe wird erfindungsgemäß durch ein Verfahren gelöst, wie es im Anspruch 1 definiert ist und im wesentlichen darin besteht, ein geeignetes poröses Trägermaterial mit den in flüssige Form gebrachten hochradioaktiven Stoffen zu tränken. Wenn das Trägermaterial pulver- oder partikelförmig vorliegt, wird es vorzugsweise nach der Tränkung zu Pellets gepreßt. Liegt dagegen das Trägermaterial bereits in Pelletform vor der Tränkung vor, dann ist es günstig, dieses vor der Tränkung zu entgasen, um eine gleichmäßige Verteilung des radioaktiven Materials im Trägermaterial zu erleichtern.According to the invention, this object is achieved by a method solved as defined in claim 1 and substantially consists of a suitable porous support material with the highly radioactive brought into liquid form Soak fabrics. If the carrier material is powdered or is present in particulate form, it is preferably after the impregnation pressed into pellets. On the other hand, the backing material lies already in pellet form before the impregnation, then it is beneficial degas this before the impregnation in order to achieve an even Distribution of the radioactive material in the carrier material to facilitate.

In manchen Anwendungen ist es wichtig, die mechanische Stabilität der Pellets zu verbessern, um deren Integrität während der ganzen Bestrahlung zu gewährleisten. Dies kann dadurch erreicht werden, daß der Kern der Pellets durch geeignete zeitliche Beschränkung des Tränkungsprozesses von den hochradioaktiven Stoffen freibleibt und damit die mechanische Stabilität des Pellets erhalten bleibt.In some applications it is important to use mechanical Pellet stability to improve their integrity to ensure during the whole irradiation. This can be achieved in that the core of the pellets through appropriate time limit for the impregnation process of remains free of the highly radioactive substances and thus the mechanical The stability of the pellet is maintained.

Weiter kann es sinnvoll sein, einen Teil der Oberfläche der Pellets beim Tränken auszusparen, so daß bei der Bestrahlung der im Zentrum des Pellets befindliche Kern keine Spaltungswärme erzeugt, was die mechanische Stabilität erhöht. Dies kann geschehen, indem entweder die Pellets nur teilweise in die Tränkflüssigkeit eingetaucht werden oder indem sie vor dem Tränken teilweise mit einer für die Tränkflüssigkeit undurchlässigen Schicht versehen werden.It may also be useful to have part of the surface the pellets to be left out when soaking, so that when Irradiation of the core in the center of the pellet none Fission heat creates what the mechanical stability elevated. This can be done by either using the pellets only partially immersed in the soaking liquid or by partially using one for the soaking liquid before soaking impermeable layer.

Die Erfindung wird nun anhand einiger bevorzugter Ausführungsbeispiele näher erläutert.The invention will now become more preferred based on some Exemplary embodiments explained in more detail.

Als poröses Trägermaterial können Pulver, Granulatpartikel oder Mikrokügelchen verwendet werden, wie beispielsweise Oxide von Uranium, Plutonium, Thorium, Yttrium, Cer und Mischungen dieser und anderer Oxide, z.B. Spinell und YAG (Yttrium Aluminium Granat). Diese Liste ist jedoch keineswegs erschöpfend und hängt von der Art der zu transmutierenden oder zu verbrennenden Stoffe ab. Auch Karbide und Nitride der erwähnten und anderer Elemente kommen ggf. in Frage. Als zu transmutierende und zu verbrennende Stoffe kommen die verschiedenen Isotope von Plutonium, Americium, Neptunium, Curium und andere Actiniden sowie Spaltprodukte, z.B. Technetium, in Frage. Diese Stoffe werden entweder durch Schmelzen oder durch chemisches Lösen in einem geeigneten Lösungsmittel in flüssige Form gebracht.Powders, granulate particles can be used as the porous carrier material or microspheres can be used, such as Oxides of uranium, plutonium, thorium, yttrium, cerium and mixtures of these and other oxides, e.g. Spinel and YAG (yttrium aluminum garnet). However, this list is by no means exhaustive and depends on the type of transmutated or substances to be burned. Also carbides and Nitrides of the mentioned and other elements may come in Question. As substances to be transmuted and burned the different isotopes come from plutonium, americium, Neptunium, curium and other actinides and fission products, e.g. Technetium, in question. These substances are either by melting or by chemical dissolution in a suitable Solvent brought into liquid form.

Das Trägermaterial muß ausreichend porös sein, um durch diesen flüssigen Stoff getränkt werden zu können. Außerdem darf dieses Trägermaterial bei der Tränkung durch den flüssigen Stoff im wesentlichen nicht gelöst werden. Die mechanische Form des Trägermaterials hängt von dem gewünschten Tränkungsgrad ab. Es kommen Pulver und Granulate in Frage, die durch Ausfällung oder Umwandlungsprozesse entstanden sind, Mikrokügelchen, die durch ein sogenanntes Tropfen zu Partikel Konversionsverfahren (Sol-Gel) hergestellt wurden, oder Formlinge, die aus Pulvern, Granulaten oder Mikrokügelchen verdichtet wurden.The carrier material must be sufficiently porous in order to to be soaked in this liquid substance. Moreover may this carrier material in the impregnation by the liquid substance can not be solved essentially. The mechanical shape of the carrier material depends on the desired Degree of impregnation. Powders and granules are possible that arose from precipitation or transformation processes are microspheres that are caused by a drop Particle conversion processes (sol-gel) were produced, or moldings made from powders, granules or microspheres were compressed.

Liegt das Trägermaterial bei der Tränkung in Form von Pulvern, Granulaten oder Mikrokügelchen vor, dann wird dieses Material nach der Tränkung durch mechanischen Druck oder Vibration in die gewünschte Form gebracht.Is the backing material in the form of Powders, granules or microspheres, then this Material after impregnation by mechanical pressure or Vibration brought into the desired shape.

In einer möglichen Ausführungsform werden vor der Tränkung aus dem Trägermaterial in Pulverform Pellets gepreßt und vorgebrannt. Solche Pellets besitzen eine Porosität von etwa 40% und können einfach getränkt werden. Im einfachsten Fall werden sie in eine Schmelze oder Lösung des hochradioaktiven Stoffs eingetaucht. Dabei legt man sie in einer definierten Lage auf ein Gitter und taucht dieses langsam in die Flüssigkeit. Die Tränkungsrate hängt von der Dimension der Poren, der Viskosität und Oberflächenspannung der Flüssigkeit, der Benetzbarkeit des Pelletmaterials und der Tränkungsdauer ab.In one possible embodiment, before Impregnation pressed from the carrier material in powder form pellets and pre-burned. Such pellets have a porosity of about 40% and can easily be soaked. In the simplest Case they are in a melt or solution of the highly radioactive material immersed. You put them in a defined position on a grid and dips it slowly into the liquid. The impregnation rate depends on the Dimension of the pores, viscosity and surface tension the liquid, the wettability of the pellet material and the duration of the impregnation.

Legt man Wert auf eine sehr homogene Verteilung der Flüssigkeit in dem Pellet, dann können Gasblasen stören, die in dem Pellet eingeschlossen sind, so daß ungetränkte Zonen verbleiben. Dieses Problem kann gelöst werden, indem man vor der Zufuhr der Tränkflüssigkeit in dem Tränkbehälter einen Unterdruck herstellt, und solche Gasblasen absaugt.If you value a very homogeneous distribution of the Liquid in the pellet, then gas bubbles can disrupt that are enclosed in the pellet so that unimpregnated zones remain. This problem can be solved by looking ahead the supply of the impregnation liquid in the impregnation container Produces negative pressure, and aspirates such gas bubbles.

In manchen Anwendungen ist es jedoch erwünscht, daß die Tränkung nur die äußere Schicht der Pellets erreicht. Dies kann erreicht werden durch eine geeignete Wahl der Tränkungsdauer, so daß die Tränkung nur bis zu einer bestimmten Tiefe in die Pellets reicht. Man kann auch eine für die Flüssigkeit undurchlässige Schutzschicht auf einen Teil der Oberfläche des Pellets aufbringen, um an dieser Stelle das Eindringen der Flüssigkeit zu verhindern und damit einen durch die Tränkung nicht erreichbaren zentralen zylindrischen Kern in den Pellets zu erhalten. Dies hat den Vorteil, daß Spaltenergie bei der Bestrahlung der hochradioaktiven Stoffe in der Nuklearanlage bevorzugt an der Pelletoberfläche als Wärme auftritt und leicht abgeführt werden kann, während der feste Kern des Pellets verhindert, daß dieses zerfällt.However, in some applications it is desirable that the impregnation only reaches the outer layer of the pellets. This can be achieved through a suitable choice of Impregnation time, so that the impregnation only up to a certain Depth in the pellets. You can also get one for the liquid impermeable protective layer on one part Apply the surface of the pellet to this point to prevent the penetration of the liquid and thus a central cylindrical, inaccessible due to the impregnation Get core in the pellets. This has the advantage that gap energy when irradiating the highly radioactive Substances in the nuclear plant are preferred on the pellet surface occurs as heat and can be easily dissipated, while the solid core of the pellet prevents this disintegrates.

Nach dem Tränken kann der in flüssiger Form im Pellet vorliegende hochradioaktive Stoff durch eine Wärmebehandlung in eine gewünschte Form (z.B. Oxid, Nitrid oder Karbid) umgewandelt werden, worauf eine Sinterung erfolgen kann.After soaking, it can be in liquid form in the pellet present highly radioactive substance through a heat treatment converted to a desired shape (e.g. oxide, nitride or carbide) what can be sintered.

In einer anderen Ausführungsform kann das Trägermaterial wie erwähnt aus Mikrokügelchen bestehen, die z.B. nach dem Sol-Gel-Verfahren hergestellt sind. Wegen ihrer hohen Porosität (etwa 80%) eignen sie sich besonders gut, wenn eine sehr intensive Tränkung gewünscht ist. So kann man eine zylindrische Säule mit den Mikrokügelchen füllen und dann eine Nitratlösung des hochradioaktiven Stoffes zugeben. Die Abmessungen der Säule werden so gewählt, daß keine kritischen Bedingungen entstehen. Nach Beendigung der Tränkung wird die verbleibende Nitratlösung des radioaktiven Stoffs in einen Speichertank zurückgepumpt. Der in den Kügelchen verbleibende Teil dieses Stoffes wird dann in ein Oxid, Nitrid oder Karbid verwandelt. Diese Umwandlung erfolgt unter geeigneter Atmosphäre in handelsüblichen Öfen oder mit Hilfe von Mikrowellen. Danach werden die Kügelchen in die für die Bestrahlung in der Nuklearanlage gewünschte Form gepreßt.In another embodiment, the carrier material as mentioned, consist of microspheres, e.g. to are produced using the sol-gel process. Because of their high Porosity (about 80%) are particularly good if a very intensive impregnation is desired. So you can get one Fill the cylindrical column with the microspheres and then add a nitrate solution of the highly radioactive substance. The Dimensions of the column are chosen so that no critical Conditions arise. After impregnation becomes the remaining nitrate solution of the radioactive substance pumped back into a storage tank. The one in the beads remaining part of this substance is then converted into an oxide, Nitride or carbide is transformed. This conversion takes place in a suitable atmosphere in standard ovens or with Using microwaves. Then the beads are in the desired form for radiation in the nuclear facility pressed.

Das Tränken der Kügelchen und deren anschließendes Pressen in die Pelletform können völlig automatisch erfolgen, so daß die Beschäftigten nicht durch zusätzliche Strahlung gefährdet werden. Auch entsteht bei diesem Verfahren kein Staub von hochgiftigen Stoffen.Soaking the beads and their subsequent Pressing into the pellet form can be done completely automatically, so that workers are not exposed to additional radiation are at risk. This process also creates no dust from highly toxic substances.

Anstelle des Tränkens der Kügelchen in einer Säule kann man auch die Kügelchen in einem Korb in die Flüssigkeit eintauchen oder man kann die Kügelchen bewegen oder umrühren und zugleich mit dem flüssigen Stoff besprühen.Instead of soaking the beads in a column you can also put the beads in a basket in the liquid immerse or you can move or stir the beads and at the same time spray with the liquid substance.

Die entscheidenden Vorteile des erfindungsgemäßen Verfahrens sind folgende:

  • 1 - Beschränkung der Verfahrensschritte, bei denen hochradioaktive Stoffe eingesetzt werden, auf die Verflüssigung und auf die Tränkung.
  • 2 - Das Verfahren eignet sich gut für einen ferngesteuerten und weitgehend automatischen Ablauf.
  • 3 - Es entsteht kaum giftiger Staub oder radioaktiver Abfall.
  • 4 - Die Strahlungsbelastung der Beschäftigten wird erheblich verringert.
    • The decisive advantages of the method according to the invention are as follows:
  • 1 - Limitation of the process steps in which highly radioactive substances are used to the liquefaction and the impregnation.
  • 2 - The procedure is well suited for a remote-controlled and largely automatic process.
  • 3 - There is hardly any toxic dust or radioactive waste.
  • 4 - The radiation exposure of employees is significantly reduced.

    • Claims (8)

    1. A method for preparing highly radioactive materials for transmutation and/or combustion by irradiation in nuclear plants, characterized in that the materials are converted by melting or chemical dissolution into a liquid, that a porous support material, which is practically not soluble in said liquid, is impregnated with said liquid and is subjected thereafter to a thermal treatment such that the radioactive materials are finally converted into the desired chemical state.
    2. A method according to claim 1, characterized in that the support material consists of a powder or of particles and that it is brought into the desired shape after the impregnation and thermal treatment steps by applying a mechanical force or vibration.
    3. A method according to claim 1, characterized in that the support material initially consists of bricks, for example of pellets.
    4. A method according to claim 3, characterized in that the brick additionally is de-gassed prior to and during the impregnation step.
    5. A method according to claim 3, characterized in that the impregnation is restricted in time to such an extent that the core of the pellets does not become impregnated.
    6. A method according to claim 3, characterized in that the pellets are only partly immersed into the impregnation liquid during impregnation.
    7. A method according to claim 3, characterized in that, prior to impregnation, the pellets are coated on a portion of their surface with a layer which is impermeable to the impregnation liquid.
    8. A method according to any one of claims 1 to 7, characterized in that finally a heat treatment step (sintering) is performed.
    EP97908208A 1996-03-19 1997-03-10 Method for preparing highly radioactive materials for transmutation and/or burn-up Expired - Lifetime EP0888623B1 (en)

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    LU88727A LU88727A1 (en) 1996-03-19 1996-03-19 Process for the preparation of highly radioactive substances for transmutation and / or combustion
    LU88727 1996-03-19
    PCT/EP1997/001214 WO1997035324A1 (en) 1996-03-19 1997-03-10 Method for preparing highly radioactive materials for transmutation and/or burn-up

    Publications (2)

    Publication Number Publication Date
    EP0888623A1 EP0888623A1 (en) 1999-01-07
    EP0888623B1 true EP0888623B1 (en) 2001-06-13

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    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP97908208A Expired - Lifetime EP0888623B1 (en) 1996-03-19 1997-03-10 Method for preparing highly radioactive materials for transmutation and/or burn-up

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    EP (1) EP0888623B1 (en)
    JP (1) JP2000506976A (en)
    AT (1) ATE202235T1 (en)
    CA (1) CA2249347A1 (en)
    DE (1) DE59703801D1 (en)
    DK (1) DK0888623T3 (en)
    ES (1) ES2159115T3 (en)
    GR (1) GR3036593T3 (en)
    LU (1) LU88727A1 (en)
    PT (1) PT888623E (en)
    WO (1) WO1997035324A1 (en)

    Family Cites Families (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    FR2262854B1 (en) * 1974-02-28 1976-12-10 Commissariat Energie Atomique
    FR2280180A1 (en) * 1974-07-22 1976-02-20 Aerojet General Co METHOD AND APPARATUS FOR TREATMENT OF RADIOACTIVE WASTE
    US4609430A (en) * 1984-03-07 1986-09-02 Ngk Insulators, Ltd. Liquid material drying apparatus
    EP0185931B1 (en) * 1984-12-25 1991-07-24 Ebara Corporation Method and apparatus for processing waste matter

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    Publication number Publication date
    JP2000506976A (en) 2000-06-06
    GR3036593T3 (en) 2001-12-31
    ES2159115T3 (en) 2001-09-16
    CA2249347A1 (en) 1997-09-25
    DK0888623T3 (en) 2001-09-03
    WO1997035324A1 (en) 1997-09-25
    DE59703801D1 (en) 2001-07-19
    PT888623E (en) 2001-10-31
    ATE202235T1 (en) 2001-06-15
    LU88727A1 (en) 1997-09-19
    EP0888623A1 (en) 1999-01-07

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