EP1443524A1 - Transport and/or storage container for radioactive materials, especially spent nuclear fuel bundles - Google Patents

Transport and/or storage container for radioactive materials, especially spent nuclear fuel bundles Download PDF

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Publication number
EP1443524A1
EP1443524A1 EP03001434A EP03001434A EP1443524A1 EP 1443524 A1 EP1443524 A1 EP 1443524A1 EP 03001434 A EP03001434 A EP 03001434A EP 03001434 A EP03001434 A EP 03001434A EP 1443524 A1 EP1443524 A1 EP 1443524A1
Authority
EP
European Patent Office
Prior art keywords
transport
storage container
materials
spent nuclear
different materials
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.)
Withdrawn
Application number
EP03001434A
Other languages
German (de)
French (fr)
Inventor
Hans-Jürgen Dipl.-Ing. Canzler
Roland Dipl.-Ing. Hüggenberg
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
GNB GmbH
GNB Gesellschaft fuer Nuklear Behaelter 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 GNB GmbH, GNB Gesellschaft fuer Nuklear Behaelter mbH filed Critical GNB GmbH
Priority to EP03001434A priority Critical patent/EP1443524A1/en
Priority to US10/405,892 priority patent/US20040140307A1/en
Publication of EP1443524A1 publication Critical patent/EP1443524A1/en
Withdrawn legal-status Critical Current

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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
    • G21F5/005—Containers for solid radioactive wastes, e.g. for ultimate disposal
    • G21F5/008—Containers for fuel elements
    • G21F5/012—Fuel element racks in the containers

Definitions

  • the invention relates to a transport and / or storage container for radioactive substances, especially spent ones Nuclear reactor fuel elements, with a carrying basket made of each other connected different materials.
  • the baskets are regular as it were from differently used different Made of materials. This results in a more complex one Structure and complex production of the baskets.
  • the mechanical stability can only by Increasing the sheet thickness or with a complex design can be achieved with higher strength materials. That leads overall to a higher weight of the carrier, which adversely affect the usability of the container - less usable volume for the fuel elements - and the higher ones Requirements for the lid system - stressful mass under Accident conditions - affects. Add to that the manufacturing effort to comply with certain tolerances Because of the combination of the different materials is high.
  • the invention is therefore based on the object, the structure a basket for transport and / or storage containers type mentioned at the beginning without impairing the functionality and simplify properties.
  • the solution to this problem according to the invention consists in that the different materials at least partially are used in the form of composite materials.
  • Composite materials means in the context of the invention over the entire surface or gaps connected to each other without gaps Materials. In this way, mechanical weak points at the connection points with the boron alloy, metallic materials can be avoided. Hence can the support cage construction simplified or mechanical resilience and thus design reliability can be increased. At the same time there are no gaps, which are the heat transfer resistance increase what for the reduction of Temperature levels or an increase in heat output used can be. Due to the gap-free connection between The different materials can be used after loading there is no accumulation of residual water. So can the processing time is shortened and the drying behavior be improved. Also leave the specified tolerances comply better with the use of composite materials. At the same time, the manufacturing effort is reduced.
  • the composite materials on the one hand Copper, copper alloys, aluminum, aluminum alloys, borated stainless steel and / or metallic alloys containing boron and on the other hand made of high-strength stainless steel.
  • the different materials Explosive plating, roll plating and / or hydroforming brought together.
  • the materials themselves are preferably used in sheet form, other forms, such as B. Pipes are also possible.
  • the single figure shows a composite material in cross section.
  • the composite material shown in the figure different materials is one for the basket Transport and / or storage containers for radioactive materials, in particular spent nuclear reactor fuel elements determined.
  • One material 1 of the composite material consists of Copper, a copper alloy, aluminum, an aluminum alloy, borated stainless steel and / or a boron-containing metallic alloy.
  • the other material 2 consists of high-strength stainless steel.
  • the two composite materials 1, 2 are in the exemplary embodiment by roll cladding together brought together.

Abstract

A radioactive waste container (4) includes a waste-holding basket formed of two layers (1, 2) of respective dissimilar materials. The layer having faces engaging each other and is bounded together over their entire engaged faces.

Description

Die Erfindung betrifft einen Transport- und/oder Lagerbehälter für radioaktive Stoffe, insbesondere abgebrannte Kernreaktorbrennelemente, mit einem Tragkorb aus miteinander verbundenen unterschiedlichen Werkstoffen.The invention relates to a transport and / or storage container for radioactive substances, especially spent ones Nuclear reactor fuel elements, with a carrying basket made of each other connected different materials.

Bei aus der Praxis bekannten Transport- und/oder Lagerbehältern der genannten Art sind die Tragkörbe regelmäßig gleichsam aus nebeneinander eingesetzten unterschiedlichen Werkstoffen hergestellt. Hierdurch ergeben sich ein komplexerer Aufbau und eine aufwendige Fertigung der Tragkörbe.In transport and / or storage containers known from practice of the type mentioned, the baskets are regular as it were from differently used different Made of materials. This results in a more complex one Structure and complex production of the baskets.

Im Einzelnen ist hierzu Folgendes auszuführen: Um die Auslegungsziele hinsichtlich einer hohen mechanischen Stabilität unter Unfallbedingungen, einer ausreichenden Wärmeabfuhr zur Einhaltung von Brennstabtemperaturgrenzwerten und die Gewährleistung der Unterkritikalität sicherzustellen, werden die Tragkörbe regelmäßig in einer Sandwichbauweise aus unterschiedlichen Materialien hergestellt. So werden z. B. borlegierte Edelstähle zur Gewährleistung der Unterkritikalität mit hochfesten Edelstählen zur Erzielung einer hohen mechanischen Stabilität kombiniert, zusätzlich werden auch Wärmeleitbleche aus Kupfer bzw. Aluminium eingesetzt. Aus diesem Aufbau ergeben sich zwangsläufig zwischen den unterschiedlichen Materialien fertigungsbedingte Spalte und an Verbindungsstellen mit borlegierten, metallischen Werkstoffen mechanische Schwachstellen. Die Spalte wirken sich nachteilig auf die Wärmeabfuhreigenschaft des Tragkorbes sowie des Trocknungsverhaltens nach der Beladung des Behälters unter Wasser aus. Da die ausnutzbare Festigkeit der borlegierten, metallischen Werkstoffe relativ niedrig und an den Verbindungsstellen (überwiegend Schweißnähte) durch die Versprödungsneigung in Folge des Bors noch weiter herabgesetzt ist, kann die mechanische Stabilität nur durch Erhöhung der Blechdicke oder mit einer komplexen Bauweise mit höherfesten Werkstoffen erzielt werden. Das führt insgesamt zu einem höheren Gewicht des Tragkorbes, welches sich negativ auf die Nutzbarkeit des Behälters - geringeres nutzbares Volumen für die Brennelemente - und die höheren Anforderungen an das Deckelsystem - belastende Masse unter Unfallbedingungen - auswirkt. Hinzu kommt, dass der Fertigungsaufwand zur Einhaltung bestimmter Toleranzen auf Grund der Kombination der unterschiedlichen Werkstoffe sehr hoch ist.The following is to be carried out in detail: In order to achieve the design goals in terms of high mechanical stability under accident conditions, sufficient heat dissipation to comply with fuel rod temperature limits and ensure subcriticality, the baskets are regularly in a sandwich construction made of different materials. So be z. B. boron-alloyed stainless steels to ensure subcriticality with high-strength stainless steels to achieve a high mechanical stability combined, in addition heat conducting sheets made of copper or aluminum are also used. This structure inevitably results in between the different materials manufacturing-related column and at joints with boron-alloyed, metallic Mechanical weak points. The gaps work adversely affect the heat dissipation property of the carrier and the drying behavior after loading the Container under water. Because the exploitable strength of the boron-alloyed, metallic materials relatively low and at the connection points (mainly welds) due to the tendency towards embrittlement due to boron is reduced, the mechanical stability can only by Increasing the sheet thickness or with a complex design can be achieved with higher strength materials. That leads overall to a higher weight of the carrier, which adversely affect the usability of the container - less usable volume for the fuel elements - and the higher ones Requirements for the lid system - stressful mass under Accident conditions - affects. Add to that the manufacturing effort to comply with certain tolerances Because of the combination of the different materials is high.

Der Erfindung liegt daher die Aufgabe zu Grunde, den Aufbau eines Tragkorbes für Transport- und/oder Lagerbehälter der eingangs genannten Art ohne Beeinträchtigung der Funktionalität und Eigenschaften zu vereinfachen.The invention is therefore based on the object, the structure a basket for transport and / or storage containers type mentioned at the beginning without impairing the functionality and simplify properties.

Die erfindungsgemäße Lösung dieser Aufgabe besteht darin, dass die unterschiedlichen Werkstoffe zumindest teilweise in Form von Verbundwerkstoffen eingesetzt sind.The solution to this problem according to the invention consists in that the different materials at least partially are used in the form of composite materials.

Verbundwerkstoffe meint im Rahmen der Erfindung vollflächig bzw. spaltfrei miteinander verbundene unterschiedliche Werkstoffe. Auf diese Weise können mechanische Schwachpunkte an den Verbindungsstellen mit dem borlegierten, metallischen Werkstoffen vermieden werden. Folglich kann die Tragkorbkonstruktion vereinfacht bzw. mechanische Belastbarkeit und damit Auslegungssicherheit erhöht werden. Zugleich entfallen die Spalte, die den Wärmeübergangswiderstand erhöhen, was für die Reduktion des Temperaturniveaus bzw. eine Wärmeleistungserhöhung genutzt werden kann. Aufgrund der spaltfreien Verbindung zwischen den unterschiedlichen Werkstoffen kann nach der Beladung keine Ansammlung von Restwasser mehr auftreten. Also kann die Abfertigungsdauer verkürzt und das Trocknungsverhalten verbessert werden. Auch die vorgegebenen Toleranzen lassen sich unter Einsatz der Verbundwerkstoffe besser einhalten. Zugleich ist der Fertigungsaufwand reduziert.Composite materials means in the context of the invention over the entire surface or gaps connected to each other without gaps Materials. In this way, mechanical weak points at the connection points with the boron alloy, metallic materials can be avoided. Hence can the support cage construction simplified or mechanical resilience and thus design reliability can be increased. At the same time there are no gaps, which are the heat transfer resistance increase what for the reduction of Temperature levels or an increase in heat output used can be. Due to the gap-free connection between The different materials can be used after loading there is no accumulation of residual water. So can the processing time is shortened and the drying behavior be improved. Also leave the specified tolerances comply better with the use of composite materials. At the same time, the manufacturing effort is reduced.

Für die weitere Ausgestaltung bestehen im Rahmen der Erfindung mehrere Möglichkeiten. So bestehen nach bevorzugter Ausführungsform die Verbundwerkstoffe einerseits aus Kupfer, Kupferlegierungen, Aluminium, Aluminiumlegierungen, boriertem Edelstahl und/oder borhaltigen metallischen Legierungen und andererseits aus hochfestem Edelstahl. Zweckmäßigerweise werden die unterschiedlichen Werkstoffe durch Sprengplattieren, Walzplattieren und/oder Hydroforming miteinander in Verbund gebracht. Die Werkstoffe selbst werden vorzugsweise in Blechform eingesetzt, andere Formen, wie z. B. Rohre sind aber ebenfalls möglich.For the further embodiment, there are within the scope of the invention more options. So exist after preferred Embodiment the composite materials on the one hand Copper, copper alloys, aluminum, aluminum alloys, borated stainless steel and / or metallic alloys containing boron and on the other hand made of high-strength stainless steel. Conveniently, the different materials Explosive plating, roll plating and / or hydroforming brought together. The materials themselves are preferably used in sheet form, other forms, such as B. Pipes are also possible.

Im Folgenden wird die Erfindung anhand einer ein Ausführungsbeispiel darstellenden Zeichnung näher erläutert.In the following, the invention is based on an exemplary embodiment illustrative drawing explained in more detail.

Die einzige Figur zeigt im Querschnitt einen Verbundwerkstoff. Der in der Figur dargestellte Verbundwerkstoff aus unterschiedlichen Werkstoffen ist für den Tragkorb eines Transport- und/oder Lagerbehälters für radioaktive Stoffe, insbesondere abgebrannte Kernreaktorbrennelemente bestimmt. Der eine Werkstoff 1 des Verbundwerkstoffes besteht aus Kupfer, einer Kupferlegierung, Aluminium, einer Aluminiumlegierung, boriertem Edelstahl und/oder einer borhaltigen, metallischen Legierung. Der andere Werkstoff 2 besteht aus hochfestem Edelstahl. Die beiden Verbundwerkstoffe 1, 2 sind im Ausführungsbeispiel durch Walzplattieren miteinander in Verbund gebracht.The single figure shows a composite material in cross section. The composite material shown in the figure different materials is one for the basket Transport and / or storage containers for radioactive materials, in particular spent nuclear reactor fuel elements determined. One material 1 of the composite material consists of Copper, a copper alloy, aluminum, an aluminum alloy, borated stainless steel and / or a boron-containing metallic alloy. The other material 2 consists of high-strength stainless steel. The two composite materials 1, 2 are in the exemplary embodiment by roll cladding together brought together.

Claims (4)

Transport- und/oder Lagerbehälter für radioaktive Stoffe, insbesondere abgebrannte Kernreaktorbrennelemente, mit einem Tragkorb aus miteinander verbundenen unterschiedlichen Werkstoffen (1, 2), dadurch gekennzeichnet, dass die unterschiedlichen Werkstoffe (1, 2) zumindest teilweise in Form von Verbundwerkstoffen eingesetzt sind.Transport and / or storage container for radioactive materials, in particular spent nuclear reactor fuel elements, with a carrier basket made of interconnected different materials (1, 2), characterized in that the different materials (1, 2) are at least partially used in the form of composite materials. Transport- und/oder Lagerbehälter nach Anspruch 1, dadurch gekennzeichnet, dass die Verbundwerkstoffe (1, 2) einerseits aus Kupfer, Kupferlegierungen, Aluminium, Aluminiumlegierungen, boriertem Edelstahl und/oder borhaltigen, metallischen Legierungen (1) und andererseits aus hochfestem Edelstahl (2) bestehen.Transport and / or storage container according to claim 1, characterized in that the composite materials (1, 2) on the one hand made of copper, copper alloys, aluminum, aluminum alloys, borated stainless steel and / or boron-containing, metallic alloys (1) and on the other hand made of high-strength stainless steel (2 ) consist. Transport- und/oder Lagerbehälter nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die unterschiedlichen Werkstoffe (1, 2) durch Sprengplattieren, Walzplattieren und/oder Hydroforming miteinander in Verbund gebracht sind.Transport and / or storage container according to claim 1 or 2, characterized in that the different materials (1, 2) are brought together by explosive plating, roll plating and / or hydroforming. Transport- und/oder Lagerbehälter nach einem der Ansprüche 1 bis 3, gekennzeichnet durch Verbundwerkstoffe (1, 2) in Blechform.Transport and / or storage container according to one of claims 1 to 3, characterized by composite materials (1, 2) in sheet form.
EP03001434A 2003-01-22 2003-01-22 Transport and/or storage container for radioactive materials, especially spent nuclear fuel bundles Withdrawn EP1443524A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP03001434A EP1443524A1 (en) 2003-01-22 2003-01-22 Transport and/or storage container for radioactive materials, especially spent nuclear fuel bundles
US10/405,892 US20040140307A1 (en) 2003-01-22 2003-04-02 Basket for radioactive-waste container

Applications Claiming Priority (1)

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EP03001434A EP1443524A1 (en) 2003-01-22 2003-01-22 Transport and/or storage container for radioactive materials, especially spent nuclear fuel bundles

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Publication number Priority date Publication date Assignee Title
RU2465661C2 (en) * 2007-10-29 2012-10-27 Холтек Интернэшнл, Инк. Apparatus for fastening radioactive fuel assemblies
JP6216548B2 (en) * 2013-06-20 2017-10-18 三菱重工業株式会社 Radioactive substance storage basket and radioactive substance storage container

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DE7833030U1 (en) * 1978-11-07 1979-03-08 Transnuklear Gmbh, 6450 Hanau INSERT BASKET FOR BURN-DOWN FUEL ELEMENTS IN TRANSPORT AND / OR STORAGE CONTAINERS
DE3447278A1 (en) * 1984-12-22 1986-06-26 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe LONG-TERM CORROSION PROTECTION COVER FOR TIGHTLY CLOSED CONTAINERS WITH HIGH RADIOACTIVE CONTENT
JPS61162799A (en) * 1985-01-11 1986-07-23 株式会社神戸製鋼所 Basket for spent fuel transport vessel
JPS6212899A (en) * 1985-07-10 1987-01-21 株式会社神戸製鋼所 Basket for spent fuel transport and storage vessel
JPH11264893A (en) * 1998-01-14 1999-09-28 Nuclear Fuel Ind Ltd Storage vessel of spent fuel
EP1083240A1 (en) * 1999-09-09 2001-03-14 Mitsubishi Heavy Industries, Ltd. Aluminum composite material, manufacturing method therefor, and basket and cask using the same
JP2002020828A (en) * 2000-07-06 2002-01-23 Mitsubishi Heavy Ind Ltd Aluminum alloy material, its production method and basket and cask using the same

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US4666659A (en) * 1983-10-25 1987-05-19 Mitsubishi Heavy Industries, Ltd. Shipping and storage container for spent nuclear fuel
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US4827139A (en) * 1987-04-20 1989-05-02 Nuclear Assurance Corporation Spent nuclear fuel shipping basket and cask
US5612543A (en) * 1996-01-18 1997-03-18 Sierra Nuclear Corporation Sealed basket for boiling water reactor fuel assemblies
DE19917515B4 (en) * 1999-04-17 2013-01-24 GNS Gesellschaft für Nuklear-Service mbH Transport and / or storage containers for spent fuel
FR2813701B1 (en) * 2000-09-01 2002-11-29 Transnucleaire STORAGE BASKET FOR RADIOACTIVE MATERIAL
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* Cited by examiner, † Cited by third party
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DE7833030U1 (en) * 1978-11-07 1979-03-08 Transnuklear Gmbh, 6450 Hanau INSERT BASKET FOR BURN-DOWN FUEL ELEMENTS IN TRANSPORT AND / OR STORAGE CONTAINERS
DE3447278A1 (en) * 1984-12-22 1986-06-26 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe LONG-TERM CORROSION PROTECTION COVER FOR TIGHTLY CLOSED CONTAINERS WITH HIGH RADIOACTIVE CONTENT
JPS61162799A (en) * 1985-01-11 1986-07-23 株式会社神戸製鋼所 Basket for spent fuel transport vessel
JPS6212899A (en) * 1985-07-10 1987-01-21 株式会社神戸製鋼所 Basket for spent fuel transport and storage vessel
JPH11264893A (en) * 1998-01-14 1999-09-28 Nuclear Fuel Ind Ltd Storage vessel of spent fuel
EP1083240A1 (en) * 1999-09-09 2001-03-14 Mitsubishi Heavy Industries, Ltd. Aluminum composite material, manufacturing method therefor, and basket and cask using the same
JP2002020828A (en) * 2000-07-06 2002-01-23 Mitsubishi Heavy Ind Ltd Aluminum alloy material, its production method and basket and cask using the same

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PATENT ABSTRACTS OF JAPAN vol. 2002, no. 05 3 May 2002 (2002-05-03) *

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