EP0044024A1 - Container for transporting and/or storing radioactive materials - Google Patents

Container for transporting and/or storing radioactive materials Download PDF

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Publication number
EP0044024A1
EP0044024A1 EP81105280A EP81105280A EP0044024A1 EP 0044024 A1 EP0044024 A1 EP 0044024A1 EP 81105280 A EP81105280 A EP 81105280A EP 81105280 A EP81105280 A EP 81105280A EP 0044024 A1 EP0044024 A1 EP 0044024A1
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EP
European Patent Office
Prior art keywords
webs
cooling fins
container body
transport
height
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
EP81105280A
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German (de)
French (fr)
Other versions
EP0044024B1 (en
Inventor
Werner Dipl.-Ing. Botzem
Ortwin Dipl.-Ing. Knappe
Reiner Dipl.-Ing. Laug
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.)
Transnuklear GmbH
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Transnuklear GmbH
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Publication date
Application filed by Transnuklear GmbH filed Critical Transnuklear GmbH
Publication of EP0044024A1 publication Critical patent/EP0044024A1/en
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Publication of EP0044024B1 publication Critical patent/EP0044024B1/en
Expired 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
    • G21F5/06—Details of, or accessories to, the containers
    • G21F5/10—Heat-removal systems, e.g. using circulating fluid or cooling fins

Definitions

  • the present invention relates to a transport and / or storage container for radioactive substances, in particular for irradiated fuel elements from nuclear reactors, consisting essentially of a container body with a shielding function for gamma radiation, neutron shielding and cooling fins on the surface of the container body for heat dissipation to the environment .
  • Transport / storage containers for radioactive materials must also withstand severe accidents in accordance with traffic regulations, whereby the accidents when testing the model include are simulated by falling from a height of 9 m onto an unyielding surface. After such a load, the container must remain tight and there must be no significant weakening.
  • cooling fins When falling on the surface provided with cooling fins, it must be accepted that the cooling fins in the area of the point of impact will be damaged. In previously known containers with welded or cast-on cooling fins, there is the disadvantage that the cooling fins may break off a crack propagation into the container body representing the tight enclosure of the radioactive substance takes place.
  • the object was achieved in that webs are attached to the surface of the container body transversely to the direction of extension of the cooling fins.
  • a transport and storage container consisting of a container body (1) and other parts and equipment known per se, has cooling fins (2) on its surface.
  • Crosspieces (3) are attached transversely to the direction of extension of the cooling fins (2), which are in the axial direction of extension of the cooling fins run around, but run axially with all-round cooling fins. Casting the cooling fins (2) and webs (3) onto the container body (1) has proven to be particularly advantageous.
  • the transverse webs (3) have the result that the inevitable breakage of the cooling fins (2) does not occur on impact at the fin base (6), where there is a risk of crack expansion in the container body (1), but at a certain distance from the fin base.
  • the safe distance of the crack from the container body (1) is guaranteed by the selection of the appropriate web heights and the corresponding web spacing. As theoretical calculations and experiments have shown, it is particularly advantageous to dimension the webs (3) such that the web height is a maximum of 2/3 of the height of the cooling fins (2) and the web spacing is a maximum of 10 times the web height.
  • a particularly advantageous embodiment consists in providing notches (4) in the cooling fins (2) in the region of the webs (3), which ensure the targeted formation of cracks even more reliably without penetration into the container body (1) by the formation of cracks on the webs (3) the predetermined distance from each other is limited.
  • the maximum depth of the notches (4) is reached at the upper limit (5) of the webs (3). Shallow depths of the notches (4) are dependent on Aus Laying and material also very effective.
  • the notches can be molded on or, if necessary, worked in later.
  • a cast container for irradiated fuel assemblies from pressurized water reactors with cast-on surrounding webs, spacing from each other approx. 440 mm, web height approx. 70 mm, has cooling fins which are arranged on the surface of the container body in the axial direction.
  • the cooling fins have a height of approx. 240 mm.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Structure Of Emergency Protection For Nuclear Reactors (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

1. A transport and/or storage container for radioactive materials and more particularly for irradiated fuel elements from nuclear reactors, consisting of a container body which acts as a shield against gamma radiation, a neutron shield and cooling ribs on the surface of the container body which run in an aixal or radial direction, characterized in that webs (3) are arranged on the surface of the container body (1) in a transverse direction to that of the cooling ribs (2), the height of which webs is at most 2/3 the height of the cooling ribs (2) and the webs (3) are arranged at a spacing from each other which is at most 10 times the height of the webs (3).

Description

Gegenstand der vorliegenden Erfindung ist ein Transport- und/oder Lagerbehälter für radioaktive Stoffe, insbesondere für bestrahlte Brennelemente aus Kernreaktoren, im wesentlichen bestehend aus einem Behälterkörper mit Abschirmfunktion für Gamma- Strahlung, einer Neutronenabschirmung und Kühlrippen an der Oberfläche des Behälterkörpers zur Wärmeabfuhr an die Umgebung.The present invention relates to a transport and / or storage container for radioactive substances, in particular for irradiated fuel elements from nuclear reactors, consisting essentially of a container body with a shielding function for gamma radiation, neutron shielding and cooling fins on the surface of the container body for heat dissipation to the environment .

Transport-/Lagerbehälter für radioaktive Stoffe müssen entsprechend den Verkehrsvorschriften auch schweren Unfällen standhalten, wobei die Unfälle bei der Prüfung des Baumusters u.a. simuliert werden durch den Absturz aus 9 m Höhe auf eine unnachgiebige Oberfläche. Nach einer solchen Belastung muß der Behälter dicht bleiben, und es darf keine nennenswerte Schwächung erfolgen.Transport / storage containers for radioactive materials must also withstand severe accidents in accordance with traffic regulations, whereby the accidents when testing the model include are simulated by falling from a height of 9 m onto an unyielding surface. After such a load, the container must remain tight and there must be no significant weakening.

Beim Absturz auf die mit Kühlrippen versehene Oberfläche muß in Kauf genommen werden, daß Kühlrippen im Bereich des Aufprallpunktes beschädigt werden. Bei bisher bekannten Behältern mit angeschweißten oder angegossenen Kühlrippen besteht dabei nachteilig die Gefahr, daß durch das Abbrechen von Kühlrippen eine Rißfortpflanzung in den die dichte Umschließung des radioaktiven Stoffes darstellende Behälterkörper hinein erfolgt.When falling on the surface provided with cooling fins, it must be accepted that the cooling fins in the area of the point of impact will be damaged. In previously known containers with welded or cast-on cooling fins, there is the disadvantage that the cooling fins may break off a crack propagation into the container body representing the tight enclosure of the radioactive substance takes place.

Es war daher Aufgabe der vorliegenden Erfindung, einen Transport- und/oder Lagerbehälter für radioaktive Stoffe, insbesondere für bestrahlte Brennelemente aus Kernreaktoren,zu schaffen, im wesentlichen bestehend aus einem Behälterkörper mit Abschirmfunktion für Gamma-Strahlung, einer Neutronenabschirmung und Kühlrippen an der Oberfläche des Behälterkörpers, der bei Beschädigung bzw. Abbrechen von Kühlrippen eine Rißfortpflanzung in den Behälterkörper hinein vermeidet.It was therefore an object of the present invention to provide a transport and / or storage container for radioactive materials, in particular for irradiated fuel elements from nuclear reactors, consisting essentially of a container body with a shielding function for gamma radiation, a neutron shield and cooling fins on the surface of the Container body that prevents crack propagation into the container body if the cooling fins are damaged or broken off.

Die Aufgabe wurde erfindungsgemäß dadurch gelöst, daß auf der Oberfläche des Behälterkörpers quer zur Erstreckungsrichtung der Kühlrippen Stege angebracht sind.The object was achieved in that webs are attached to the surface of the container body transversely to the direction of extension of the cooling fins.

Anhand der Abbildungen I bis IV wird nachstehend der erfindungsgemäße Behälter schematisch und in beispielhafter Ausführung näher erläutert.The container according to the invention is explained schematically and in an exemplary embodiment in more detail below with reference to Figures I to IV.

Ein Transport- und Lagerbehälter, bestehend aus einem Behälterkörper (1) und anderen an sich bekannten Teilen und Ausstattungen, besitzt an seiner Oberfläche Kühlrippen (2). Quer zur Erstreckungsrichtung der Kühlrippen (2) sind Stege (3) angebracht, die bei axialer Erstreckungsrichtung der Kühlrippen rundumlaufen, bei rundum-laufenden Kühlrippen jedoch axial verlaufen. Als besonders günstig hat.sich das gemeinsame Angießen der Kühlrippen (2) und Stege (3) an den Behälterkörper (1) erwiesen.A transport and storage container, consisting of a container body (1) and other parts and equipment known per se, has cooling fins (2) on its surface. Crosspieces (3) are attached transversely to the direction of extension of the cooling fins (2), which are in the axial direction of extension of the cooling fins run around, but run axially with all-round cooling fins. Casting the cooling fins (2) and webs (3) onto the container body (1) has proven to be particularly advantageous.

Die Querstege (3) haben zur Folge, daß der unvermeidbare Bruch der Kühlrippen (2) beim Aufprall nicht am Rippenfuß (6) erfolgt, wo die Gefahr der Rißausdehnung in den Behälterkörper (1) gegeben ist, sondern in einem bestimmten Abstand vom Rippenfuß. Der sichere Abstand des Risses vom Behälterkörper (1) wird gewährleistet durch die Wahl entsprechender Steghöhen und entsprechendem Stegabstand. Wie theoretische Berechnungen sowie Experimente gezeigt haben, ist es besonders vorteilhaft, die Stege (3) so zu dimensionieren, daß die Steghöhe maximal 2/3 der Höhe der Kühlrippen (2) und der Stegabstand maximal das 10-fache der Steghöhe beträgt.The transverse webs (3) have the result that the inevitable breakage of the cooling fins (2) does not occur on impact at the fin base (6), where there is a risk of crack expansion in the container body (1), but at a certain distance from the fin base. The safe distance of the crack from the container body (1) is guaranteed by the selection of the appropriate web heights and the corresponding web spacing. As theoretical calculations and experiments have shown, it is particularly advantageous to dimension the webs (3) such that the web height is a maximum of 2/3 of the height of the cooling fins (2) and the web spacing is a maximum of 10 times the web height.

Eine besonders vorteilhafte Ausbildung besteht darin, in den Kühlrippen (2) im Bereich der Stege (3) Kerben (4) vorzusehen, die die gezielte Rißausbildung ohne Eindringen in den Behälterkörper (1) noch zuverlässiger gewährleisten, indem die Rißbildung auf den durch die Stege (3) zueinander vorgegebenen Abstand limitiert wird. Die maximale Tiefe der Kerben (4) ist an der oberen Begrenzung (5) der Stege (3) erreicht. Geringere Tiefen der Kerben (4) sind in Abhängigkeit von Auslegung und Material ebenfalls sehr wirksam. Die Kerben können angeformt oder fallweise auch nachträglich eingearbeitet werden.A particularly advantageous embodiment consists in providing notches (4) in the cooling fins (2) in the region of the webs (3), which ensure the targeted formation of cracks even more reliably without penetration into the container body (1) by the formation of cracks on the webs (3) the predetermined distance from each other is limited. The maximum depth of the notches (4) is reached at the upper limit (5) of the webs (3). Shallow depths of the notches (4) are dependent on Aus Laying and material also very effective. The notches can be molded on or, if necessary, worked in later.

Beispielexample

Ein Gußbehälter für bestrahlte Brennelemente aus Druckwasserreaktoren mit angegossenen umlaufenden Stegen, Stegabstand voneinander ca. 440 mm, Steghöhe ca. 70 mm, besitzt Kühlrippen, die in axialer Richtung an der Behälterkörperoberfläche angeordnet sind. Die Kühlrippen weisen eine Höhe von ca. 240 mm auf. Im Bereich der querlaufenden Stege befinden sich in den Kühlrippen Kerben mit einer Kerbentiefe von ca. 95 mm. Mit diesen Auslegungsdaten werden Risse im Behälterkörper durch Kühlrippenbeschädigungen sicher vermieden.A cast container for irradiated fuel assemblies from pressurized water reactors with cast-on surrounding webs, spacing from each other approx. 440 mm, web height approx. 70 mm, has cooling fins which are arranged on the surface of the container body in the axial direction. The cooling fins have a height of approx. 240 mm. In the area of the transverse webs, there are notches in the cooling fins with a notch depth of approx. 95 mm. With this design data, cracks in the container body due to damage to the cooling ribs are reliably avoided.

Es ist auch günstig, wenn der von den Stegen (3) und den unteren Teilen der Kühlrippen (2) gebildete Raum (7) mit Neutronenabschirmungsmaterial gefüllt ist.It is also favorable if the space (7) formed by the webs (3) and the lower parts of the cooling fins (2) is filled with neutron shielding material.

Claims (6)

1. Transport- und/oder Lagerbehälter für radioaktive Stoffe, insbesondere für bestrahlte Brennelemente aus Kernreaktoren, im wesentlichen bestehend aus einem Behälterkörper mit Abschirmfunktion für Gamma-Strahlung, einer Neutronenabschirmung und Kühlrippen an der Oberfläche des Behälterkörpers, dadurch ge przeichnet, daß auf der Oberfläche des Behälterkörpers (1) quer zur Erstreckungsrichtung der Kühlrippen (2) Stege (3) angebracht sind.1. Transport and / or storage container for radioactive materials, in particular for irradiated fuel elements from nuclear reactors, consisting essentially of a container body with a shielding function for gamma radiation, a neutron shielding and cooling fins on the surface of the container body, characterized in that on the surface of the container body (1) transverse to the direction of extension of the cooling fins (2) webs (3) are attached. 2. Transport- und/oder Lagerbehälter nach Anspruch 1, dadurch gekennzeichnet, daß die Höhe der Stege (3) maximal 2/3 der Höhe der Kühlrippen (2) beträgt.2. Transport and / or storage container according to claim 1, characterized in that the height of the webs (3) is a maximum of 2/3 of the height of the cooling fins (2). 3. Transport- und/oder Lagerbehälter nach Anspruch 1 und 2, dadurch gekennzeichnet, daß die Kühlrippen (2) im Bereich der querlaufenden Stege (3) Kerben (4) aufweisen, wobei die maximale Tiefe der Kerben (4) die obere Begrenzung (5) der Stege (3) bildet.3. Transport and / or storage container according to claim 1 and 2, characterized in that the cooling fins (2) in the region of the transverse webs (3) have notches (4), the maximum depth of the notches (4) the upper limit ( 5) the webs (3) forms. 4. Transport- und/oder Lagerbehälter nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß die Stege (3) in einem Abstand zueinander angeordnet sind, der maximal das 10-fache der Steghöhe beträgt.4. Transport and / or storage container according to claim 1 to 3, characterized in that the webs (3) are arranged at a distance from each other which is a maximum of 10 times the web height. 5. Transport- und/oder Lagerbehälter nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß der von den Stegen (3) und den Kühlrippen (2) gebildete Raum (7) mit Neutronenabschirmungsmaterial gefüllt ist.5. Transport and / or storage container according to claim 1 to 4, characterized in that the space formed by the webs (3) and the cooling fins (2) (7) is filled with neutron shielding material. 6. Transport- und/oder Lagerbehälter nach Anspruch 1 bis 5, dadurch gekennzeichnet, daß die Kühlrippen (2) und Stege (3) gemeinsam an den Behälterkörper (1) angegossen sind.6. Transport and / or storage container according to claim 1 to 5, characterized in that the cooling fins (2) and webs (3) are cast together on the container body (1).
EP81105280A 1980-07-11 1981-07-08 Container for transporting and/or storing radioactive materials Expired EP0044024B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3026248 1980-07-11
DE3026248A DE3026248C2 (en) 1980-07-11 1980-07-11 Transport and / or storage containers for radioactive substances

Publications (2)

Publication Number Publication Date
EP0044024A1 true EP0044024A1 (en) 1982-01-20
EP0044024B1 EP0044024B1 (en) 1984-11-14

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EP81105280A Expired EP0044024B1 (en) 1980-07-11 1981-07-08 Container for transporting and/or storing radioactive materials

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EP (1) EP0044024B1 (en)
JP (1) JPS5786098A (en)
DE (2) DE3026248C2 (en)
ES (1) ES503544A0 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2518795A1 (en) * 1981-12-22 1983-06-24 Wiederaufarbeitung Von Kernbre CONTAINER FOR THE LONG-TERM STORAGE OF SUSPENDED FUEL ELEMENTS OF NUCLEAR REACTORS
WO2016091793A1 (en) * 2014-12-10 2016-06-16 Areva Gmbh Shock absorber for transport containers and/or storage containers for fuel elements and/or fuel-containing vessels, fuel element and/or fuel-containing vessel, and transport containers and/or storage containers for fuel elements and/or fuel-containing vessels
EP2937867B1 (en) 2014-03-03 2018-11-14 Fnctech Containment filtered venting system used for nuclear power plant
CN110867267A (en) * 2019-11-06 2020-03-06 江苏中海华核环保有限公司 Spent fuel storage and transportation container

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1279234B (en) * 1962-09-07 1968-10-03 Licentia Gmbh Massive transport container for heat-generating radioactive masses
DE2221610A1 (en) * 1972-05-03 1973-11-15 Kernforschungsanlage Juelich Radiation shielded transit pack - for radioactive material or components
FR2215675A1 (en) * 1971-04-14 1974-08-23 Nl Industries Inc
DE2040348B2 (en) * 1969-08-13 1976-10-21 Ausscheidung in: 20 65 863 Transnucleaire, Societe pour les Transports de l'Industrie Nucleaire, Paris CONTAINER FOR STORAGE AND TRANSPORTATION OF RADIOACTIVE MATERIALS
DE2740933B1 (en) * 1977-09-10 1979-01-18 Rheinisch Westfaelisches Elek Transport or storage container for radioactive materials, in particular irradiated nuclear reactor fuel elements

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7825615U1 (en) * 1978-08-29 1979-01-25 Gns Gesellschaft Fuer Nuklear-Service Mbh, 4300 Essen SHIELD TRANSPORT AND / OR SHIELD STORAGE CONTAINER FOR RADIOACTIVE WASTE
JPS592359B2 (en) * 1978-09-22 1984-01-18 三井造船株式会社 Spent fuel transport container

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1279234B (en) * 1962-09-07 1968-10-03 Licentia Gmbh Massive transport container for heat-generating radioactive masses
DE2040348B2 (en) * 1969-08-13 1976-10-21 Ausscheidung in: 20 65 863 Transnucleaire, Societe pour les Transports de l'Industrie Nucleaire, Paris CONTAINER FOR STORAGE AND TRANSPORTATION OF RADIOACTIVE MATERIALS
FR2215675A1 (en) * 1971-04-14 1974-08-23 Nl Industries Inc
DE2221610A1 (en) * 1972-05-03 1973-11-15 Kernforschungsanlage Juelich Radiation shielded transit pack - for radioactive material or components
DE2740933B1 (en) * 1977-09-10 1979-01-18 Rheinisch Westfaelisches Elek Transport or storage container for radioactive materials, in particular irradiated nuclear reactor fuel elements

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2518795A1 (en) * 1981-12-22 1983-06-24 Wiederaufarbeitung Von Kernbre CONTAINER FOR THE LONG-TERM STORAGE OF SUSPENDED FUEL ELEMENTS OF NUCLEAR REACTORS
EP2937867B1 (en) 2014-03-03 2018-11-14 Fnctech Containment filtered venting system used for nuclear power plant
WO2016091793A1 (en) * 2014-12-10 2016-06-16 Areva Gmbh Shock absorber for transport containers and/or storage containers for fuel elements and/or fuel-containing vessels, fuel element and/or fuel-containing vessel, and transport containers and/or storage containers for fuel elements and/or fuel-containing vessels
CN110867267A (en) * 2019-11-06 2020-03-06 江苏中海华核环保有限公司 Spent fuel storage and transportation container
CN110867267B (en) * 2019-11-06 2021-06-22 江苏中海华核环保有限公司 Spent fuel storage and transportation container

Also Published As

Publication number Publication date
ES8303796A1 (en) 1983-02-01
JPS5786098A (en) 1982-05-28
EP0044024B1 (en) 1984-11-14
DE3026248A1 (en) 1982-02-18
ES503544A0 (en) 1983-02-01
DE3167181D1 (en) 1984-12-20
DE3026248C2 (en) 1984-05-10
JPH0330840B2 (en) 1991-05-01

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