EP0660335B1 - Device for preventing overpressure in storage containers containing hydrogen emitting material - Google Patents

Device for preventing overpressure in storage containers containing hydrogen emitting material Download PDF

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Publication number
EP0660335B1
EP0660335B1 EP94119896A EP94119896A EP0660335B1 EP 0660335 B1 EP0660335 B1 EP 0660335B1 EP 94119896 A EP94119896 A EP 94119896A EP 94119896 A EP94119896 A EP 94119896A EP 0660335 B1 EP0660335 B1 EP 0660335B1
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EP
European Patent Office
Prior art keywords
container
hydrogen
water
agent
receptacle
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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
EP94119896A
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German (de)
French (fr)
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EP0660335A1 (en
Inventor
Heinz Dr. Heimbach
Hans-Jürgen Dr. Steinmetz
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Forschungszentrum Juelich GmbH
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Forschungszentrum Juelich GmbH
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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
    • G21F5/00—Transportable or portable shielded containers
    • G21F5/06—Details of, or accessories to, the containers

Definitions

  • the invention relates to a device for avoiding overpressures in storage containers for hydrogen-developing, in particular radioactive, waste materials, with a container for converting hydrogen into water containing a container.
  • Radioactive waste is stored in closed containers for long periods. Due to radiolytic decomposition and as a result of electrochemical reactions, hydrogen is generated in radioactive waste, in particular in those with highly compressed radioactive mixed waste. For example, Release 100% of highly compressed radioactive mixed wastes stored in conventional containers of 200 l within 100 days up to 1300 l of hydrogen. This gas development can lead to considerable overpressure and thus to bulges and / or leaks in the respective waste containers. When storing radioactive waste containers, however, their integrity must be guaranteed and furthermore it must be ensured that no further danger from the escape of hydrogen and possibly detonating gas formation can occur.
  • EP-A-0 383 153 already describes an arrangement provided in a passage opening of the container or lid, which contains a filling material between gas-permeable boundaries, which contributes to the catalytic oxidation of hydrogen Storage temperature is enabled.
  • the water formed can escape unhindered from the container.
  • this problem solution does not take into account the fact that water containing tritium is formed and can be released to the surroundings of the container.
  • a catalyst packing provided with an additional desiccant in a gas-permeable envelope has long been known (DE 2856243 C2), which can be found at possible exit points of containers such as e.g. can be provided sealingly below the container lid, but the usability of this arrangement, which is accessible from the start, does not appear to be guaranteed over long periods.
  • a function of reducing the pressure in the container is not mentioned in DE 28 56 243 C2.
  • the aim of the invention is now an arrangement with which a useful means for reducing pressure in the event of hydrogen evolution in the closed container is available even over long periods of time.
  • the device according to the invention of the type mentioned at the outset is characterized in that the container has both means for converting the hydrogen into water and drying agent in a gas-tight space which is connected to the environment via a rupture disk.
  • Such a bursting unit integrated in the waste container gives a previous one in particular when a certain internal container pressure is exceeded Shielding gas stored combination of hydrogen / oxygen recombination catalyst or water-forming chemical oxidizing agent and a desiccant free. Both components are effective both at room temperature and at final storage temperature.
  • the bursting unit protects the catalytic converter or the oxidizing agent and desiccant from undesired contact with inactivating waste components until the need is reached.
  • the bursting unit is advantageously screwed or glued to the inside of the container lid with the rupture disk pointing upwards or downwards. However, it can also be otherwise fixed in the container or placed without attachment and in particular mechanically protected by an excellent grid.
  • the bursting unit essentially consists of a cup-shaped container 2 with a closed bottom.
  • blind holes and through holes are made distributed over the circumference.
  • the blind holes serve to fasten the circular cover 12 and the underlying sealing washer 15 by means of the washers 13 and screws 14 .
  • the through bores receive threaded rods 23 embedded in the container lid 1 , via which the entire bursting unit is fastened to the container lid by means of the washers 18 and nuts 19 .
  • the lid 12 has an opening in which the rupture disc 17 and one arranged above it Protective grille 16 are attached.
  • rupture disks made of graphite or graphite coated on one or both sides with PTFE for example type HYKARB from Ralph Coidan Equipment Ltd., in particular at 150 to 200 mbar differential pressure. (Cleveland, USA), rupture disks made of various metals or alloys, e.g. type BS & B from Bormann & Neupert (Düsseldorf), as well as rupture disks made of PTFE or Teflon®, e.g. type COV from Strikomaschinestechnik (Wiehl) have proven to be suitable.
  • desiccants Inside the container 2 there are two layers of desiccants with different effects below the water vapor permeable separating layers 4 and 6 .
  • desiccants are molecular sieves, dewatered aquo complexing agents, such as copper sulfate, or hygroscopic chemicals such as calcium chloride, magnesium sulfate or phosphorus pentoxide, optionally on a carrier material.
  • a layer of a chemical oxidizing agent in particular an oxide with a high oxidation potential, which is held by the gas-permeable separating layer 21 , above the separating layer 6 .
  • a chemical oxidizing agent in particular an oxide with a high oxidation potential
  • manganese dioxide activated with traces of silver is particularly effective as an oxidizing agent, which can be used as a powder or in pressed form.
  • Version B of the bursting unit contains two networks 7 and 9 with applied hydrogen / oxygen recombination catalyst above the separation layer 6 .
  • platinum or palladium-coated nets in particular type E2993AE100 (Pt) or L1993CB003 (Pd) from DODUCO GmbH & Co. (Sinsheim) are particularly suitable here.
  • spacer rings 3 , 5 and 20 , 22 or 24 , 8 and 10 To fix the separating layers 4 and 6 and the separating layer 21 or the nets 7 and 8 are used in the Container 2 inserted spacer rings 3 , 5 and 20 , 22 or 24 , 8 and 10 .
  • the flexible ring 11 located between spacer ring 20 ( version A ) or 10 ( version B ) and sealing washer 15 serves to compensate for tolerances in the thickness of the spacer rings.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Packages (AREA)
  • Processing Of Solid Wastes (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Closures For Containers (AREA)

Description

Die Erfindung bezieht sich auf eine Vorrichtung zur Vermeidung von Überdrücken in Lagerbehältern für Wasserstoff entwickelnde, insbesondere radioaktive Abfallstoffe mit einem in den Behälter einbezogenen, Mittel zur Umwandlung von Wasserstoff in Wasser aufweisenden Behältnis.The invention relates to a device for avoiding overpressures in storage containers for hydrogen-developing, in particular radioactive, waste materials, with a container for converting hydrogen into water containing a container.

Radioaktive Abfälle werden über längere Zeiten hinweg in geschlossenen Behältern gelagert. Aufgrund radiolytischer Zersetzung sowie infolge elektrochemischer Reaktionen entsteht in radioaktiven Abfällen, insbesondere in solchen mit hochverpreßten radioaktiven Mischabfällen, Wasserstoff. So können z.B. in konventionellen Behältern von 200 l gelagerte hochverpreßte radioaktive Mischabfälle innerhalb von 100 Tagen bis zu 1300 l Wasserstoff freisetzen. Diese Gasentwicklung kann zu beträchtlichem Überdruck und damit zu Aufwölbungen und/oder Leckagen der jeweiligen Abfallbehälter führen. Bei der Lagerung radioaktiver Abfallgebinde muß aber deren Integrität gewährleistet und ferner sichergestellt werden, daß keine weitere Gefährdung durch das Entweichen von Wasserstoff und ggf. Knallgasbildung auftreten kann.Radioactive waste is stored in closed containers for long periods. Due to radiolytic decomposition and as a result of electrochemical reactions, hydrogen is generated in radioactive waste, in particular in those with highly compressed radioactive mixed waste. For example, Release 100% of highly compressed radioactive mixed wastes stored in conventional containers of 200 l within 100 days up to 1300 l of hydrogen. This gas development can lead to considerable overpressure and thus to bulges and / or leaks in the respective waste containers. When storing radioactive waste containers, however, their integrity must be guaranteed and furthermore it must be ensured that no further danger from the escape of hydrogen and possibly detonating gas formation can occur.

Zur Reduzierung des in radioaktiven Abfallgebinden durch Wasserstoff verursachten Innendrucks wird bereits in der EP-A-0 383 153 eine in einer Durchlaßöffnung von Behälter oder Deckel vorgesehene Anordnung beschrieben, die zwischen gasdurchlässigen Begrenzungen ein Füllmaterial enthält, das zur katalytischen Oxidation von Wasserstoff bei Lagertemperatur befähigt ist. Das dabei gebildete Wasser kann dabei ungehindert aus dem Behälter entweichen. Mit einer solchen Anordnung ist die sicherheitstechnische Barrierefunktion des Behälters für radioaktive Gase oder Dämpfe aber nicht mehr erfüllt. Insbesondere berücksichtigt diese Problemlösung nicht, daß tritiumhaltiges Wasser entstehen und an die Umgebung des Behälters abgegeben werden kann.To reduce the internal pressure caused by hydrogen in radioactive waste containers, EP-A-0 383 153 already describes an arrangement provided in a passage opening of the container or lid, which contains a filling material between gas-permeable boundaries, which contributes to the catalytic oxidation of hydrogen Storage temperature is enabled. The water formed can escape unhindered from the container. With such an arrangement, however, the safety-related barrier function of the container for radioactive gases or vapors is no longer fulfilled. In particular, this problem solution does not take into account the fact that water containing tritium is formed and can be released to the surroundings of the container.

Eine mit zusätzlichem Trockenmittel versehene Katalysatorpackung in gasdurchlässiger Hülle ist zwar schon länger bekannt (DE 2856243 C2) die an möglichen Austrittsstellen von Behältern wie z.B. unterhalb des Behälterdeckels abdichtend vorgesehen sein kann, jedoch erscheint die Brauchbarkeit dieser von Anfang an zugänglichen Anordnung über lange Zeiten hinweg nicht unbedingt gewährleistet. Eine Funktion der Druckminderung im Behälter ist in der DE 28 56 243 C2 nicht erwähnt.A catalyst packing provided with an additional desiccant in a gas-permeable envelope has long been known (DE 2856243 C2), which can be found at possible exit points of containers such as e.g. can be provided sealingly below the container lid, but the usability of this arrangement, which is accessible from the start, does not appear to be guaranteed over long periods. A function of reducing the pressure in the container is not mentioned in DE 28 56 243 C2.

Ziel der Erfindung ist nun eine Anordnung mit der auch über längere Zeiten hinweg ein brauchbares Mittel zum Druckabbau bei Wasserstoff-Entwicklung im geschlossenen Behälter zur Verfügung steht.The aim of the invention is now an arrangement with which a useful means for reducing pressure in the event of hydrogen evolution in the closed container is available even over long periods of time.

Zu diesem Zweck ist die erfindungsgemäße Vorrichtung der eingangs genannten Art dadurch gekennzeichnet, daß das Behältnis sowohl Mittel zur Umsetzung des Wasserstoffs in Wasser als auch Trockenmittel in einem in sich gasdicht abgeschlossenen Raum aufweist, der mit der Umgebung über eine Berstscheibe in Verbindung steht.For this purpose, the device according to the invention of the type mentioned at the outset is characterized in that the container has both means for converting the hydrogen into water and drying agent in a gas-tight space which is connected to the environment via a rupture disk.

Weitere Besonderheiten der Erfindung ergeben sich aus den Unteransprüchen und der nachfolgenden Beschreibung.Further special features of the invention result from the subclaims and the following description.

Eine solche in den Abfallbehälter integrierte Bersteinheit gibt bei Überschreiten eines bestimmten Behälterinnendruckes eine zuvor insbesonders unter Schutzgas gelagerte Kombination aus Wasserstoff/Sauerstoff-Rekombinationskatalysator bzw. wasserbildendem chemischen Oxidationsmittel und einem Trockenmittel frei. Beide Komponenten sind sowohl bei Raumtemperatur als auch bei Endlagertemperatur wirksam. Die Bersteinheit schützt den Katalysator bzw. das Oxidationsmittel und Trockenmittel bis zum Erreichen des Bedarfsfalles vor unerwünschtem Kontakt mit inaktivierenden Abfallkomponenten. Im Hinblick auf die Minimierung des freien Behältervolumens wird die Bersteinheit vorteilhaft an der Innenseite des Behälterdeckels mit nach oben oder nach unten zeigender Berstscheibe verschraubt oder verklebt. Sie kann aber auch anderweitig im Behälter fixiert oder ohne Befestigung plaziert und insbesondere durch ein hervorragendes Gitter mechanisch geschützt sein.Such a bursting unit integrated in the waste container gives a previous one in particular when a certain internal container pressure is exceeded Shielding gas stored combination of hydrogen / oxygen recombination catalyst or water-forming chemical oxidizing agent and a desiccant free. Both components are effective both at room temperature and at final storage temperature. The bursting unit protects the catalytic converter or the oxidizing agent and desiccant from undesired contact with inactivating waste components until the need is reached. With a view to minimizing the free container volume, the bursting unit is advantageously screwed or glued to the inside of the container lid with the rupture disk pointing upwards or downwards. However, it can also be otherwise fixed in the container or placed without attachment and in particular mechanically protected by an excellent grid.

Im folgenden wird die Erfindung anhand der beigefügten Zeichnung näher erläutert. Diese zeigt zwei Versionen A und B einer an der Innenseite des Behälterdeckels mit nach unten zeigender Berstscheibe hängend angeordneten Bersteinheit.The invention is explained in more detail below with reference to the accompanying drawing. This shows two versions A and B of a bursting unit hanging on the inside of the container lid with the rupture disc pointing downwards.

Gemäß der Version A besteht die Bersteinheit im wesentlichen aus einem napfförmigen Behältnis 2 mit verschlossenem Boden. Im Rand des Behältnisses 2 sind über den Umfang verteilt Sacklochbohrungen und durchgehende Bohrungen eingebracht. Die Sacklochbohrungen dienen der Befestigung des kreisförmigen Deckels 12 und der darunterliegenden Dichtscheibe 15 mittels der Scheiben 13 und Schrauben 14. Die durchgehenden Bohrungen nehmen in den Behälterdeckel 1 eingelassene Gewindestangen 23 auf, über die die gesamte Bersteinheit mittels der Scheiben 18 und Muttern 19 am Behälterdeckel befestigt ist.According to version A , the bursting unit essentially consists of a cup-shaped container 2 with a closed bottom. In the edge of the container 2 , blind holes and through holes are made distributed over the circumference. The blind holes serve to fasten the circular cover 12 and the underlying sealing washer 15 by means of the washers 13 and screws 14 . The through bores receive threaded rods 23 embedded in the container lid 1 , via which the entire bursting unit is fastened to the container lid by means of the washers 18 and nuts 19 .

Der Deckel 12 besitzt eine Öffnung, in der die Berstscheibe 17 sowie ein darüber angeordnetes Schutzgitter 16 befestigt sind. Bei Versuchen haben sich insbesondere bei 150 bis 200 mbar Differenzdruck brechende Berstscheiben aus Graphit oder ein- bzw. doppelseitig mit PTFE beschichtetem Graphit, z.B. Typ HYKARB der Ralph Coidan Equipment Ltd. (Cleveland, USA), Berstscheiben aus verschiedenen Metallen oder Legierungen, z.B. Typ BS & B der Firma Bormann & Neupert (Düsseldorf), sowie Berstscheiben aus PTFE bzw. Teflon®, z.B. Typ COV der Firma Striko Verfahrenstechnik (Wiehl) als geeignet erwiesen. Im Inneren des Behältnisses 2 befinden sich unterhalb der wasserdampfdurchlässigen Trennschichten 4 und 6 zwei Lagen verschieden wirkender Trockenmittel. Gut geeignete Trockenmittel sind außer Silicagel Molekularsiebe, entwässerte Aquokomplexbildner, wie z.B. Kupfersulfat, oder hygroskopische Chemikalien wie Calciumchlorid, Magnesiumsulfat oder Phosphorpentoxid ggf. auf Trägermaterial.The lid 12 has an opening in which the rupture disc 17 and one arranged above it Protective grille 16 are attached. Experiments have shown rupture disks made of graphite or graphite coated on one or both sides with PTFE, for example type HYKARB from Ralph Coidan Equipment Ltd., in particular at 150 to 200 mbar differential pressure. (Cleveland, USA), rupture disks made of various metals or alloys, e.g. type BS & B from Bormann & Neupert (Düsseldorf), as well as rupture disks made of PTFE or Teflon®, e.g. type COV from Striko Verfahrenstechnik (Wiehl) have proven to be suitable. Inside the container 2 there are two layers of desiccants with different effects below the water vapor permeable separating layers 4 and 6 . In addition to silica gel, highly suitable desiccants are molecular sieves, dewatered aquo complexing agents, such as copper sulfate, or hygroscopic chemicals such as calcium chloride, magnesium sulfate or phosphorus pentoxide, optionally on a carrier material.

Oberhalb der Trennschicht 6 befinden sich in Version A der Bersteinheit eine Lage aus einem chemischen Oxidationsmittel, insbesondere einem Oxid mit hohem Oxidationspotential, die von der gasdurchlässigen Trennschicht 21 gehalten wird. Als Oxidationsmittel ist nach bisherigen Versuchen insbesondere mit Silberspuren aktiviertes Mangandioxid wirksam, welches als Pulver oder in gepreßter Form eingesetzt werden kann.In version A of the bursting unit there is a layer of a chemical oxidizing agent, in particular an oxide with a high oxidation potential, which is held by the gas-permeable separating layer 21 , above the separating layer 6 . According to previous experiments, manganese dioxide activated with traces of silver is particularly effective as an oxidizing agent, which can be used as a powder or in pressed form.

Oberhalb der Trennschicht 6 befinden sich in der Version B der Bersteinheit zwei Netze 7 und 9 mit aufgebrachtem Wasserstoff/ Sauerstoff-Rekombinationskatalysator. Hier eignen sich nach bisherigen Versuchen insbesondere platin- oder palladiumbeschichtete Netze, insbesondere Typ E2993AE100 (Pt) oder L1993CB003 (Pd) der Firma DODUCO GmbH & Co. (Sinsheim). Version B of the bursting unit contains two networks 7 and 9 with applied hydrogen / oxygen recombination catalyst above the separation layer 6 . According to previous tests, platinum or palladium-coated nets, in particular type E2993AE100 (Pt) or L1993CB003 (Pd) from DODUCO GmbH & Co. (Sinsheim) are particularly suitable here.

Zur Fixierung der Trennschichten 4 und 6 sowie der Trennschicht 21 oder der Netze 7 und 8 dienen die in den Behälter 2 eingelegten Distanzringe 3, 5 und 20, 22 bzw. 24, 8 und 10. Der zwischen Distanzring 20 (Version A) bzw. 10 (Version B) und Dichtscheibe 15 liegende flexible Ring 11 dient dem Ausgleich von Toleranzen in der Dicke der Distanzringe.To fix the separating layers 4 and 6 and the separating layer 21 or the nets 7 and 8 are used in the Container 2 inserted spacer rings 3 , 5 and 20 , 22 or 24 , 8 and 10 . The flexible ring 11 located between spacer ring 20 ( version A ) or 10 ( version B ) and sealing washer 15 serves to compensate for tolerances in the thickness of the spacer rings.

Claims (7)

  1. Device for avoiding excess pressures in storage containers (1) for waste which evolves hydrogen, in particular radioactive waste, with a receptacle (2; 12) which is included in the container and has an agent for converting hydrogen into water, characterized in that the receptacle (2; 12) has both an agent for converting hydrogen into water and a desiccating agent in a closed space which is connected to the surroundings via a rupture disc (17).
  2. Device according to Claim 1, characterized in that the receptacle (2; 12) is designed as a bowl-like case with a rupture disc (17) as the closure element, over which a protective grating (16) is arranged.
  3. Device according to Claim 1 or 2, characterized in that the case is provided with fastening elements (18; 19; 23), and corresponding mating pieces are provided on the container inner wall or the inside of the lid.
  4. Device according to one of the preceding claims, characterized by a layered arrangement (A and B respectively) of desiccating agent and water-vapour generator below the rupture disc (17).
  5. Device according to one of the preceding claims, characterized in that silica gel is provided as desiccating agent.
  6. Device according to one of the preceding claims, characterized in that the water-vapour generator is formed by a hydrogen/oxygen conversion catalyst or, in particular, by an oxide with high oxidation potential.
  7. Device according to one of the preceding claims, characterized in that the closed space is filled with inert gas at the container filling pressure.
EP94119896A 1993-12-20 1994-12-16 Device for preventing overpressure in storage containers containing hydrogen emitting material Expired - Lifetime EP0660335B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4343500 1993-12-20
DE4343500A DE4343500A1 (en) 1993-12-20 1993-12-20 Device for avoiding overpressures in storage containers with hydrogen-developing content

Publications (2)

Publication Number Publication Date
EP0660335A1 EP0660335A1 (en) 1995-06-28
EP0660335B1 true EP0660335B1 (en) 1997-03-19

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EP94119896A Expired - Lifetime EP0660335B1 (en) 1993-12-20 1994-12-16 Device for preventing overpressure in storage containers containing hydrogen emitting material

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DE (2) DE4343500A1 (en)
ES (1) ES2102129T3 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6781077B2 (en) 2000-12-14 2004-08-24 Think Outside, Inc. Keyswitch and actuator structure
FR2874120B1 (en) * 2004-08-09 2006-11-24 Cogema Logistics Sa METHOD AND DEVICE FOR REMOVING FLAMMABLE GASES IN A CLOSED ENCLOSURE AND ENCLOSURE EQUIPPED WITH SUCH A DEVICE
FR2879015B1 (en) * 2004-12-07 2007-03-23 Cogema Logistics Sa DEVICE FOR SANITIZING AND / OR SECURING A CONFINEMENT ENCLOSURE DEFINED IN A DEVICE FOR TRANSPORTING AND / OR STORING RADIOACTIVE MATERIALS
FR2925752B1 (en) * 2007-12-21 2012-03-09 Tn Int DEVICE FOR TRANSPORTING AND / OR STORING RADIOACTIVE MATERIALS TO ENABLE CONTROLLED RELEASE OF OXYGEN IN A CLOSED ENCLOSURE
JP2019026361A (en) * 2017-08-02 2019-02-21 宇部興産株式会社 Container for storing municipal refuse incineration ash, and storage method of the municipal refuse incineration ash using the same

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DE2538255A1 (en) * 1975-08-28 1977-03-10 Guenter Morlock Radioactive or toxic materials release prevented after accident - by intentional discharge into foam-forming materials
JPS54159590A (en) * 1978-06-08 1979-12-17 Toshiba Corp Leakage prevention device of rupture disk
DE2856243C2 (en) * 1978-12-27 1983-05-19 Kernforschungsanlage Jülich GmbH, 5170 Jülich Device for collecting tritium from containers
FR2486618B1 (en) * 1980-07-11 1985-06-28 Lemer & Cie SAFETY DEVICE CONSISTING OF A CALIBRATED PIECE WITH BREAKAGE ASSOCIATED WITH A PRESSURIZED CAPACITY AND A DEFORMABLE WALL
DE3039528A1 (en) * 1980-10-20 1982-06-03 Degussa Ag, 6000 Frankfurt SAFETY DEVICE FOR EMBALLAGE THAT CONTAINS HYDROGEN RELEASING PYROPHORIC METAL CATALYSTS
DE3640958A1 (en) * 1986-11-29 1988-06-09 Schubert Werner Rupture ball
DE3730743A1 (en) * 1987-09-12 1989-03-30 Nuklear Service Gmbh Gns Method for reducing the internal pressure build-up in a storage container for radioactive wastes
DE3802755A1 (en) * 1988-01-30 1989-08-10 Kernforschungsanlage Juelich METHOD FOR STORING RADIOACTIVE WASTE
GB8901738D0 (en) * 1989-01-26 1989-03-15 Atomic Energy Authority Uk Recombination catalyst
DE3904149C2 (en) * 1989-02-11 1994-01-20 Kernforschungsz Karlsruhe Device on containers with radioactive waste to reduce the internal pressure due to hydrogen formation
GB9123282D0 (en) * 1991-11-02 1991-12-18 British Nuclear Fuels Plc A container

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Publication number Publication date
EP0660335A1 (en) 1995-06-28
DE4343500A1 (en) 1995-06-22
ES2102129T3 (en) 1997-07-16
DE59402144D1 (en) 1997-04-24

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