DE3730743A1 - Method for reducing the internal pressure build-up in a storage container for radioactive wastes - Google Patents

Method for reducing the internal pressure build-up in a storage container for radioactive wastes

Info

Publication number
DE3730743A1
DE3730743A1 DE19873730743 DE3730743A DE3730743A1 DE 3730743 A1 DE3730743 A1 DE 3730743A1 DE 19873730743 DE19873730743 DE 19873730743 DE 3730743 A DE3730743 A DE 3730743A DE 3730743 A1 DE3730743 A1 DE 3730743A1
Authority
DE
Germany
Prior art keywords
chemical substances
storage container
internal pressure
ag2o
mno2
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
DE19873730743
Other languages
German (de)
Other versions
DE3730743C2 (en
Inventor
Rudolf Finkbeiner
Heinz Dipl Phys Dipl In Geiser
Gert Gestermann
Dieter Rittscher
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.)
GNS Gesellschaft fuer Nuklearservice mbH
Original Assignee
GNS Gesellschaft fuer Nuklearservice 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 GNS Gesellschaft fuer Nuklearservice mbH filed Critical GNS Gesellschaft fuer Nuklearservice mbH
Priority to DE19873730743 priority Critical patent/DE3730743A1/en
Priority to CH333888A priority patent/CH676520A5/de
Priority to ES8802777A priority patent/ES2010590A6/en
Publication of DE3730743A1 publication Critical patent/DE3730743A1/en
Application granted granted Critical
Publication of DE3730743C2 publication Critical patent/DE3730743C2/de
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B5/00—Water
    • 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
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/04—Treating liquids
    • G21F9/20—Disposal of liquid waste
    • G21F9/22—Disposal of liquid waste by storage in a tank or other container

Abstract

Method for reducing the internal pressure build-up in a storage container for radioactive wastes, in particular in a repository container for wastes containing metallic, corrodible components and residual water. Besides the radioactive wastes, chemical substances are introduced into the storage container that bind hydrogen chemically and/or oxidise it to water with emission of oxygen, under the thermodynamic parameters obtaining in the storage container.

Description

Die Erfindung bezieht sich gattungsgemäß auf ein Verfahren zur Re­ duzierung des lnnendruckaufbaus in einem Lagerbehälter, insbesondere in einem Endlagerbehälter, für radioaktive Abfallstoffe, welche Abfall­ stoffe metallische, korrosionsfähige Anteile und Restwasser aufweisen. - Bei druckdicht verschlossenen Lagerbehältern, insbesondere Endlager­ behältern, für radioaktive Abfallstoffe, die metallische, korrosions­ fähige Anteile aufweisen, zeigt sich zuweilen ein Innendruckaufbau, der mit zunehmender Lagerzeit zunimmt. Das kann die Sicherheit der Lagerung beeinträchtigen.The invention relates generically to a method for Re reduction of the internal pressure build-up in a storage container, in particular in a repository bin, for radioactive waste, which is waste have metallic, corrosive fractions and residual water. - For pressure-tight sealed storage containers, especially repositories containers, for radioactive waste, the metallic, corrosion sometimes have an internal pressure build-up, which increases with increasing storage time. That can be the safety of Interfere with storage.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren anzugeben, mit dem der beschriebene Innendruckaufbau reduziert werden kann. Reduzieren meint im Rahmen der Erfindung auch eine vollständige Verhinderung des Innendruckaufbaus.The invention has for its object to provide a method with which the described internal pressure buildup can be reduced. Reduction in the context of the invention also means a complete Prevention of internal pressure build-up.

Zur Lösung dieser Aufgabe lehrt die Erfindung, daß in den Lagerbe­ hälter, neben den radioaktiven Abfallstoffen, chemische Substanzen eingebracht werden, die Wasserstoff unter den thermodynamischen Zu­ standsgrößen, die in dem Lagerbehälter herrschen, binden und/oder unter Abgabe von Sauerstoff zu Wasser oxidieren. Nach bevorzugter Ausführungsform der Erfindung werden die radioaktiven Abfallstoffe und die chemischen Substanzen innig gemischt.To solve this problem, the invention teaches that in the Lagerbe containers, along with radioactive waste, chemical substances be introduced, the hydrogen under the thermodynamic Zu stand sizes that prevail in the storage container, bind and / or oxidize to water with release of oxygen. After preferred Embodiment of the invention are the radioactive waste and the chemical substances are intimately mixed.

Im Rahmen der Erfindung kann grundsätzlich mit den verschiedensten chemischen Substanzen gearbeitet werden. Nach bevorzugter Ausfüh­ rungsform der Erfindung werden chemische Substanzen aus der Gruppe "CuO, AgOH, AgMnO4", oder Mischungen davon, beigegeben. Die Bei­ gabe von CuO empfiehlt sich nur dann, wenn es sich um Lagerbehälter handelt, die für verhältnismäßig hohe Temperaturen eingerichtet sind und um Lagerungen, die bei ausreichend hohen Temperaturen statt­ finden. Als chemische Substanzen können aber auch AgO2 + MnO2 in Mischung eingebracht werden. Im Rahmen der Erfindung liegt es, mit sogenannten Rekombinatoren zu arbeiten. Das sind chemische Sub­ stanzen, die beispielsweise bei geschlossenen Kraftfahrzeugbatterien eingesetzt werden. Sie bewirken eine Rekombination von Wasserstoff und Sauerstoff zu Wasser.In the context of the invention can in principle be used with a variety of chemical substances. According to a preferred embodiment of the invention, chemical substances from the group "CuO, AgOH, AgMnO 4 ", or mixtures thereof, are added. The addition of CuO is only recommended for storage containers that are designed for relatively high temperatures and for storages that take place at sufficiently high temperatures. As chemical substances but also AgO 2 + MnO 2 can be introduced in a mixture. In the context of the invention, it is to work with so-called recombiners. These are chemical sub stances that are used for example in closed vehicle batteries. They cause a recombination of hydrogen and oxygen to water.

Der Erfindung liegen nicht zum Stand der Technik gehörende Versuche zugrunde, die zeigen, daß der Innendruckaufbau auf Korrosionsphäno­ menen im Innern des Lagerbehälters beruht, wenn die radioaktiven Abfallstoffe korrosionsfähige Metalle und Restwasser aufweisen, und zwar insbesondere solche, die wegen der großen Oberfläche der me­ tallisch korrosiven Anteile in den radioaktiven Abfallstoffen mehr oder weniger heftig oxidieren und damit korrodieren. Dabei wird Wasser­ stoff frei und erfindungsgemäß gebunden. Soweit der Wasserstoff ge­ bunden wird, kann er zum Druckaufbau nicht mehr beitragen. Eine bevorzugte Ausführungsform der Erfindung ist dadurch gekennzeichnet, daß die chemischen Substanzen in bezug auf die ReaktionsgleichungenThe invention is not related to the prior art experiments underlying, showing that the internal pressure build-up on corrosion phenomenon in the interior of the storage container, if the radioactive Waste materials have corrosive metals and residual water, and although in particular those that because of the large surface of me more or less corrosive fractions in radioactive waste oxidize less vigorously and thus corrode. This is water fabric free and bound according to the invention. As far as the hydrogen ge he can no longer contribute to pressure build-up. A preferred embodiment of the invention is characterized in that that the chemical substances with respect to the reaction equations

a) CuO + H₂a) CuO + H₂ - Cu + H₂O- Cu + H₂O b) 2 AgOH + H₂b) 2 AgOH + H₂ - 2 Ag + 2 H₂O- 2 Ag + 2 H₂O c) 2 Ag MnO₄ + 3 H₂c) 2 Ag MnO₄ + 3 H₂ - 3 H₂O + 2 MnO₂ + Ag₂O- 3 H₂O + 2 MnO₂ + Ag₂O d) Ag₂O + 2 MnO₂ + H₂d) Ag₂O + 2 MnO₂ + H₂ - H₂O + 2 Ag + 2 MnO₂- H₂O + 2 Ag + 2 MnO₂ - H₂O + Ag₂O + Mn₂O₃- H₂O + Ag₂O + Mn₂O₃

in überstöchiometrischer Menge eingebracht werden, wobei die mögliche Wasserstoffkonzentration aus dem Wassergehalt der radioaktiven Abfall­ stoffe ermittelt wird. Da bei der Oxidation des Wasserstoffes Wasser frei wird, ist eine bevorzugte Ausführungsform der Erfindung dadurch gekennzeichnet, daß zusätzlich wasserbindende Substanzen, insbesonde­ re trockener Zement und/oder feinkörniges amorphes Siliciumdioxid, eingebracht werden. Im Rahmen der Erfindung liegt es, zusätzlich Ak­ tivkohle einzubringen, um andere Gase, die sich bei der Lagerung bilden zu binden.be introduced in a superstoichiometric amount, with the possible Hydrogen concentration from the water content of radioactive waste is determined. As in the oxidation of hydrogen water becomes free, a preferred embodiment of the invention is characterized characterized in that additionally water-binding substances, in particular dry cement and / or fine-grained amorphous silica, be introduced. In the context of the invention it is, in addition Ak to introduce coal to other gases that accumulate during storage to bind.

Claims (7)

1. Verfahren zur Reduzierung des Innendruckaufbaus in einem Lagerbe­ hälter, insbesondere in einem Endlagerbehälter, für radioaktive Abfall­ stoffe, welche Abfallstoffe metallische, korrosionsfähige Anteile und Rest­ wasser aufweisen, dadurch gekennzeichnet, daß in den Lagerbehälter, neben den radioaktiven Abfallstoffen, chemische Substanzen eingebracht werden, die Wasserstoff unter den thermodyna­ mischen Zustandsgrößen, die in dem Lagerbehälter herrschen, chemisch binden und/oder unter Abgabe von Sauerstoff zu Wasser oxidieren. 1. A method for reducing the internal pressure buildup in a Lagerbe container, especially in a repository container, for radioactive waste materials, which waste metallic, corrosive fractions and residual water, characterized in that in the storage container, in addition to the radioactive waste, chemical substances are introduced , the hydrogen under the thermodynamic mixing state variables that prevail in the storage container, chemically bind and / or oxidize to oxygen with release of oxygen. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die radio­ aktiven Abfallstoffe und die chemischen Substanzen innig gemischt werden.2. The method according to claim 1, characterized in that the radio active waste and the chemical substances intimately mixed become. 3. Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekenn­ zeichnet, daß chemische Substanzen aus der Gruppe "GuO, AgOH, AgMnO4" oder Mischungen davon, beigegeben werden.3. The method according to any one of claims 1 or 2, characterized in that chemical substances from the group "GuO, AgOH, AgMnO 4 " or mixtures thereof, are added. 4. Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekenn­ zeichnet, daß als chemische Substanzen Ag2O plus MnO2 in Mischung beigegeben werden.4. The method according to any one of claims 1 or 2, characterized in that are added as chemical substances Ag 2 O plus MnO 2 in a mixture. 5. Verfahren nach Anspruch 3 bzw. Anspruch 4, dadurch gekenn­ zeichnet, daß die chemischen Substanzen in bezug auf die Reaktions­ gleichungen a) CuO + H₂ - Cu + H₂O b) 2 AgOH + H₂ - 2 Ag + 2 H₂O c) 2 Ag MnO₄ + 3 H₂ - 3 H₂O + 2 MnO₂ + Ag₂O d) Ag₂O + 2 MnO₂ + H₂ - H₂O + 2 Ag + 2 MnO₂ - H₂O + Ag₂O + Mn₂O₃
überstöchiometrisch eingebracht werden, wobei die mögliche Wasserstoff­ konzentration aus dem Wassergehalt in den radioaktiven Abfallstoffen ermittelt wird.5. The method according to claim 3 or claim 4, characterized in that the chemical substances with respect to the reaction equations a) CuO + H₂ - Cu + H₂O b) 2 AgOH + H₂ - 2 Ag + 2 H₂O c) 2 Ag MnO₄ + 3 H₂ - 3 H₂O + 2 MnO₂ + Ag₂O d) Ag₂O + 2 MnO₂ + H₂ - H₂O + 2 Ag + 2 MnO₂ - H₂O + Ag₂O + Mn₂O₃
be introduced superstoichiometric, wherein the possible hydrogen concentration is determined from the water content in the radioactive waste. 6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekenn­ zeichnet, daß zusätzlich wasserbindende Substanzen, insbesondere trockener Zement und/oder feinkörniges amorphes Siliciumdioxid, ein­ gebracht werden.6. The method according to any one of claims 1 to 5, characterized gekenn records that additionally water-binding substances, in particular dry cement and / or fine-grained amorphous silica to be brought. 7. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekenn­ zeichnet, daß zusätzliche Aktivkohle eingebracht wird.7. The method according to any one of claims 1 to 6, characterized marked records that additional activated carbon is introduced.
DE19873730743 1987-09-12 1987-09-12 Method for reducing the internal pressure build-up in a storage container for radioactive wastes Granted DE3730743A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE19873730743 DE3730743A1 (en) 1987-09-12 1987-09-12 Method for reducing the internal pressure build-up in a storage container for radioactive wastes
CH333888A CH676520A5 (en) 1987-09-12 1988-09-06
ES8802777A ES2010590A6 (en) 1987-09-12 1988-09-12 Method for reducing the internal pressure build-up in a storage container for radioactive wastes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873730743 DE3730743A1 (en) 1987-09-12 1987-09-12 Method for reducing the internal pressure build-up in a storage container for radioactive wastes

Publications (2)

Publication Number Publication Date
DE3730743A1 true DE3730743A1 (en) 1989-03-30
DE3730743C2 DE3730743C2 (en) 1992-10-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE19873730743 Granted DE3730743A1 (en) 1987-09-12 1987-09-12 Method for reducing the internal pressure build-up in a storage container for radioactive wastes

Country Status (3)

Country Link
CH (1) CH676520A5 (en)
DE (1) DE3730743A1 (en)
ES (1) ES2010590A6 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4002180A1 (en) * 1989-01-26 1990-08-02 British Nuclear Fuels Plc RECOMBINATION CATALYST
DE3904149A1 (en) * 1989-02-11 1990-08-23 Kernforschungsz Karlsruhe DEVICE ON CONTAINERS WITH RADIOACTIVE WASTE FOR REDUCING THE INTERNAL PRESSURE THROUGH HYDROGEN PRODUCTION
DE4343500A1 (en) * 1993-12-20 1995-06-22 Forschungszentrum Juelich Gmbh Device for avoiding overpressures in storage containers with hydrogen-developing content
FR2925752A1 (en) * 2007-12-21 2009-06-26 Tn Int DEVICE FOR TRANSPORTING AND / OR STORING RADIOACTIVE MATERIALS TO ENABLE CONTROLLED RELEASE OF OXYGEN IN A CLOSED ENCLOSURE
WO2010066811A1 (en) * 2008-12-11 2010-06-17 Commissariat A L'energie Atomique Et Aux Energies Alternatives Hydrogen-trapping material, method of preparation and uses
US8029738B2 (en) * 2004-08-09 2011-10-04 Tn International Method and device for removing inflammable gases in a closed chamber and chamber equipped with such a device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Hollemann-Wiberg: "Lehrbuch der anorganischen Chemie", 91.-100. Aufl., Walter de Gruyter Verlag Berlin und New York (1985), S. 221-225, 708 *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4002180C2 (en) * 1989-01-26 1999-04-01 British Nuclear Fuels Plc Recombination catalyst
DE4002180A1 (en) * 1989-01-26 1990-08-02 British Nuclear Fuels Plc RECOMBINATION CATALYST
DE3904149A1 (en) * 1989-02-11 1990-08-23 Kernforschungsz Karlsruhe DEVICE ON CONTAINERS WITH RADIOACTIVE WASTE FOR REDUCING THE INTERNAL PRESSURE THROUGH HYDROGEN PRODUCTION
DE4343500A1 (en) * 1993-12-20 1995-06-22 Forschungszentrum Juelich Gmbh Device for avoiding overpressures in storage containers with hydrogen-developing content
US8029738B2 (en) * 2004-08-09 2011-10-04 Tn International Method and device for removing inflammable gases in a closed chamber and chamber equipped with such a device
FR2925752A1 (en) * 2007-12-21 2009-06-26 Tn Int DEVICE FOR TRANSPORTING AND / OR STORING RADIOACTIVE MATERIALS TO ENABLE CONTROLLED RELEASE OF OXYGEN IN A CLOSED ENCLOSURE
WO2009083491A1 (en) * 2007-12-21 2009-07-09 Tn International Device for transporting and/or storing radioactive materials and for the controlled release of oxygen in an enclosed housing
US8263003B2 (en) 2007-12-21 2012-09-11 Tn International Device for transporting and/or storing radioactive materials and for the controlled release of oxygen in an enclosed housing
WO2010066811A1 (en) * 2008-12-11 2010-06-17 Commissariat A L'energie Atomique Et Aux Energies Alternatives Hydrogen-trapping material, method of preparation and uses
CN102245292A (en) * 2008-12-11 2011-11-16 法国原子能及替代能源委员会 Hydrogen-trapping material, method of preparation and uses
JP2012511415A (en) * 2008-12-11 2012-05-24 コミッサリア ア レネルジー アトミーク エ オ ゼネルジ ザルタナテイヴ Hydrogen capture materials, preparation methods and uses
FR2939700A1 (en) * 2008-12-11 2010-06-18 Commissariat Energie Atomique MATERIAL FOR HYDROGEN TRAPPING, PROCESS FOR PREPARATION AND USES
US8968463B2 (en) 2008-12-11 2015-03-03 Commissariat A L'energie Atomique Et Aux Energies Alternatives Hydrogen-trapping material, method of preparation and uses

Also Published As

Publication number Publication date
DE3730743C2 (en) 1992-10-15
ES2010590A6 (en) 1989-11-16
CH676520A5 (en) 1991-01-31

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