DE2841408A1 - Storage of long fuel elements esp. from water-cooled reactors - in upper and lower lattice plates without connecting rigid frame - Google Patents

Storage of long fuel elements esp. from water-cooled reactors - in upper and lower lattice plates without connecting rigid frame

Info

Publication number
DE2841408A1
DE2841408A1 DE19782841408 DE2841408A DE2841408A1 DE 2841408 A1 DE2841408 A1 DE 2841408A1 DE 19782841408 DE19782841408 DE 19782841408 DE 2841408 A DE2841408 A DE 2841408A DE 2841408 A1 DE2841408 A1 DE 2841408A1
Authority
DE
Germany
Prior art keywords
grid plates
lattice plates
storage
fuel elements
rigid frame
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
DE19782841408
Other languages
German (de)
Other versions
DE2841408C2 (en
Inventor
Helmut Ing Grad Friedrichs
Mihail Josif Dipl Ing Ghezzo
Ulrich Ing Grad Ristow
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.)
Kraftwerk Union AG
Original Assignee
Kraftwerk Union AG
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 Kraftwerk Union AG filed Critical Kraftwerk Union AG
Priority to DE2841408A priority Critical patent/DE2841408C2/en
Publication of DE2841408A1 publication Critical patent/DE2841408A1/en
Application granted granted Critical
Publication of DE2841408C2 publication Critical patent/DE2841408C2/en
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
    • G21C19/02—Details of handling arrangements
    • G21C19/06—Magazines for holding fuel elements or control elements
    • G21C19/07—Storage racks; Storage pools
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)

Abstract

A storage appts. for long fuel elements, esp. for light-water reactors, comprises upper and lower lattice plates for securely holding the elements upright. These two lattice plates are not rigidly connected together but are attached to separately mounted support. Specifically, the lattice plates are suspended. A rigid rack or frame structure as such is eliminated, thus considerably simplifying design and reducing cost.

Description

Lagereinrichtung für stabiörmize BrennelementeStorage facility for stabilized fuel elements

Die Erfindung betrifft eine Lagereinrichtung für stabförmige Brennelemente, insbesondere von Leichtwasser-Kernreaktoren, mit einer oberen und einer unteren Gitterplatte zur Halterung der Brennelemente in vertikaler Lage in definierten Brennelementpositionen.The invention relates to a storage device for rod-shaped fuel assemblies, especially of light water nuclear reactors, with an upper and a lower Grid plate for holding the fuel assemblies in a vertical position in defined fuel assembly positions.

Die bisherigen Lagereinrichtungen sind in Form von Gestellen ausgeführt, die mechanisch starr sind und deshalb als Ganzes in Brennelement-Lagerbecken eingesetzt und dort befestigt werden, wie zum Beispiel in der deutschen Gebrauchsmusterschrift 7 626 962 angegeben ist. Damit entsteht trotz der Heranziehung der Beckenwände zur Festlegung ein verhältnismäßig großer Aufwand, den die Erfindung verringern will.The previous storage facilities are designed in the form of racks, which are mechanically rigid and therefore used as a whole in fuel assembly storage pools and attached there, for example in the German utility model 7 626 962 is given. This creates despite the fact that the pool walls are used to Establishing a relatively large effort that the invention aims to reduce.

Erfindungsgemäß sind die beiden Gitterplatten ohne starre Verbindung miteinander an getrennt montierbaren Abstützungen befestigt. Dies bedeutet, daß es kein als Gatlzes montierbares starres Gestell mehr gibt. Vielmehr sind die Brennelemente nur noch in den beiden Gitterplatten festgelegt, die vorzugsweise aufgehängt sind.According to the invention, the two grid plates are without a rigid connection attached to each other on separately mountable supports. This means that it no as Gatlzes mountable rigid frame gives more. Much more the fuel assemblies are only fixed in the two grid plates, which are preferably are hung.

Die beiden Gitterplatten können zwar an einem gemeinsamen Tragglied befestigt sein. Dies sollte aber in seitlicher Richtung flexibel sein, damit es nicht für Biegekräfte bei seitlicher Beanspruchung auszulegen ist. Als derartiges Halteglied können zum Beispiel auch Hüllen aus neutronenabsorbierendem Material dienen, mit denen die beiden Gitterplatten in seitlicher Richtung flexibel verbunden sind.The two grid plates can indeed on a common support member be attached. But this should be flexible in the lateral direction so that it is not designed for bending forces with lateral loading. As such Holding members can, for example, also contain envelopes made of neutron-absorbing material serve, with which the two grid plates are flexibly connected in the lateral direction are.

Zur näheren Erläuterung der Erfindung werden anhand der beiliegenden Zeichnung einige Ausführglgsbeispiele beschrieben, die in den Fig. 1 bis 6 jeweils in Seitenansicht und Draufsicht schematisch vereinfacht gezeichnet sind. In allen Fällen befindet sich die Lagereinrichtung in dem von Betonwänden gebildeten Lagerbecken eines EntsorguIlgszentrums, in dem die Brennelemente von Leichtwasserreaktoren zum Beispiel Druckwasserreaktoren, gesammelt und gegtbenelfalls aufbereitet werden.For a more detailed explanation of the invention are based on the enclosed Drawing some Ausführungsglgsbeispiele described in Figs. 1 to 6, respectively are drawn schematically simplified in side view and top view. In all In some cases, the storage facility is located in the storage basin formed by concrete walls a disposal center in which the fuel elements from light water reactors to Example pressurized water reactors, collected and, if necessary, processed.

In den Fig. 1 und 2 enthält das Becken 1 mit den Wänden 2 als Lagereinrichtung 3 obere Gitterplatten 4 und untere Gitterplatten 5, die an getrennt montierbaren Abstützungen 6 und 7 aufgehängt sind. Die Abstützungen 7 sind als Konsole ausgeführt, die mit einer Grundplatte 8 und Schrauben 9 an den Wänden 2 des Beckens 1 befestigt sind. Die Abstützungen 6 umfassen Säulen 10, die mit Streben 11 und einer Bodenplatte 12 verschweißt sind. Die Bodenplatte ist mit Schrauben 13 am Beckengrund befestigt. An der Oberseite der Säule 10 sind Ausleger 15 vorgesehen, die den Konsolen 7 ähneln.In Figs. 1 and 2, the basin 1 contains the walls 2 as a storage facility 3 upper grid plates 4 and lower grid plates 5, which can be mounted on separately Outriggers 6 and 7 are suspended. The supports 7 are designed as a console, which is attached to the walls 2 of the basin 1 with a base plate 8 and screws 9 are. The supports 6 comprise pillars 10 with struts 11 and a base plate 12 are welded. The bottom plate is attached to the pool floor with screws 13. Brackets 15, which are similar to the brackets 7, are provided on the upper side of the column 10.

An den Auslegern und den Konsolen sind gleiche Zugstangen 16 angebracht An diesen sind die oberen Gitterplatten 4 und die unteren Gitterplatten 5 in seitlicher Richtung flexibel aufgehängt. Die Verbindung zwischen den Zugstangen 16 und den Gitterplatten 4,5 kann starr sein, wenn die Zugstangen 16 selbst in seitlicher Richtung genügend flexibel sind, so daß bei seitlichen Kräften keine Biegebeanspruchungen wie bei einem starren Gestell entstehen können.The same tie rods 16 are attached to the booms and the consoles On these are the upper grid plates 4 and the lower grid plates 5 in the side Flexible direction. The connection between the tie rods 16 and the Grid plates 4.5 can be rigid if the tie rods 16 themselves in a lateral direction are sufficiently flexible so that there are no bending stresses in the case of lateral forces as can arise with a rigid frame.

Zwischen den beiden Gitterplatten 4 und 5 verlaufen an jeder Brennelementposition Hüllen 20 aus neutronenabsorbierendem Material, vorzugsweise aus Borstahl. Die Hüllen 20 sind Jedoch mit ihren Enden 21 und 22 beweglich in den Gitterplatten 4,5 geführt, so daß sie zwar mit ihrer starren Wandung eine Führung der in den Brennelementpositionen sitzenden Brennelemente 23 ergeben, aber wiederum nicht die seitliche Beweglichkeit der Gitterplatten 4,5 beeinträchtigen. In dieser Anordnung können die Hüllen 20 auch die Tragfunktion der Zugstangen 16 übernehmen.Between the two grid plates 4 and 5 run at each fuel assembly position Sheaths 20 made of neutron-absorbing material, preferably made of boron steel. The shells 20, however, are movably guided with their ends 21 and 22 in the grid plates 4, 5, so that with its rigid wall it guides the fuel assembly positions seated fuel assemblies 23, but again not the lateral mobility of the grid plates 4.5 affect. In this arrangement, the envelopes 20 also take over the support function of the tie rods 16.

Die Hüllen 20 können mit Einlaufschrägen 24 versehen sein, um das Einfädeln der Brennelemente zu erleichtern. Entsprechende Einlaufschrägen können aber auch an der oberen Gitterplatte 4 angebracht werden, wie bei 25 gezeichnet ist.The sleeves 20 can be provided with run-in bevels 24 to the To facilitate threading of the fuel assemblies. Appropriate run-in chamfers can but can also be attached to the upper grid plate 4, as shown at 25 is.

Bei dem Ausführungsbeispiel nach den Fig. 3 und 4 ist die obere Gitterplatte 4' mit einem Kragarm 28 auf einem Absatz 29 der Wand 2 abgestützt. Die untere Gitterplatte 5' ist mit einem ähnlichen Kragarm 30 abgestützt, der kürzer ist. Durch Schlitze 31 in der Mauer 2 ist ein seitlicher Halt quer zur Richtung der Kragarme 28 und 30 vorgegeben.In the embodiment of FIGS. 3 and 4, the upper tie plate is 4 'supported with a cantilever arm 28 on a shoulder 29 of the wall 2. The lower grid plate 5 'is supported with a similar cantilever arm 30 which is shorter. Through slots 31 in wall 2 is a side one Stop across the direction of the Cantilever arms 28 and 30 specified.

Zur weiteren Abstützung kann besonders bei großflächigen Gitterplatten eine aus Stäben 33 und 34 zusammengesetzte Säule 35 vom Boden des Beckens un-ter die Gitterplatten 4', 5' geführt werden.For further support, especially with large grid plates a column 35 composed of rods 33 and 34 from the bottom of the basin below the grid plates 4 ', 5' are guided.

Beim Ausführungsbeispiel nach den Fig. 5 und 6 ist nur die obere Gitterplatte 4" unmittelbar an der Wand 2 abgestützt. Die untere Gitterplatte 5" sitzt dagegen auf Stützen 37. Wesentlich ist aber auch hier, daß kein starres Gestell entsteht, sondern daß eine leicht montierbare Anordnung gegeben ist, die auch bei seitlichen Kräften nachgeben kann und deshalb keine unzulässigen Verformungen erfährt.In the embodiment of FIGS. 5 and 6, only the upper grid plate is 4 "is supported directly on the wall 2. The lower grid plate 5" sits against it on supports 37. It is also essential here that no rigid frame is created, but that an easy-to-assemble arrangement is given, even with lateral Can yield to forces and therefore does not experience any impermissible deformations.

4 Patentansprüche 6 Figuren4 claims 6 figures

Claims (4)

Patentansprüche (1 Lagereinrichtung für stabförmige Brennelemente, insbesondere von Leichtwasser-Kernreaktoren, mit einer oberen und einer unteren Gitterplatte zur Halterung der Brennelemente in vertikaler Lage in definierten Brennelementpositionen, d a d u r c h g e k e n n z e i c hn e t, daß die beiden Gitterplatten (4,5) ohne starre Verbindung miteinander an getrennt montierbaren Abstützungen (6,7) befestigt sind.Claims (1 storage device for rod-shaped fuel assemblies, especially of light water nuclear reactors, with an upper and a lower Grid plate for holding the fuel assemblies in a vertical position in defined fuel assembly positions, d a d u r c h e k e n n n z e i c hn e t that the two grid plates (4,5) without rigid connection with each other attached to separately mountable supports (6,7) are. 2. Lagereinrichtung nach Anspruch 1, d a d u r c h g e -k e n n z e i c h ne t, daß die beiden Gitterplatten (4,5) aufgehängt sind.2. Storage device according to claim 1, d a d u r c h g e -k e n n z e i c h ne t that the two grid plates (4,5) are suspended. 3. Lagereinrichtung nach Anspruch 1 oder 2, d a d u r c h g e k e n n z e i c h n e t, daß die beiden Gitterplatten (4,5) an einem gemeinsamen Tragglied (16) befestigt sind, das in seitlicher Richtung flexibel ist.3. Storage device according to claim 1 or 2, d a d u r c h g e k e n n z e i c h n e t that the two grid plates (4,5) on a common support member (16) are attached, which is flexible in the lateral direction. 4. Lagereinrichtung nach Anspruch 1, 2 oder 3, d a -du r c h g e k e n n z e i c h n e t, daß die beiden Gitterplatten (4,5) durch Hüllen (20) aus neutronenabsorbierendem Material, insbesondere aus Borstahl, in seitlicher Richtung flexibel verbunden sind.4. Storage device according to claim 1, 2 or 3, d a -du r c h g e k It is noted that the two grid plates (4, 5) are made of sheaths (20) neutron absorbing material, in particular made of boron steel, in the lateral direction are flexibly connected.
DE2841408A 1978-09-22 1978-09-22 Storage facility for elongated fuel assemblies Expired DE2841408C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2841408A DE2841408C2 (en) 1978-09-22 1978-09-22 Storage facility for elongated fuel assemblies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2841408A DE2841408C2 (en) 1978-09-22 1978-09-22 Storage facility for elongated fuel assemblies

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DE2841408A1 true DE2841408A1 (en) 1980-03-27
DE2841408C2 DE2841408C2 (en) 1983-12-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2516694A1 (en) * 1981-11-13 1983-05-20 Alkem Gmbh STORAGE DEVICE FOR FUEL BARS OF NUCLEAR REACTOR COMBUSTIBLE ELEMENTS

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2259669A1 (en) * 1972-12-06 1974-06-12 Licentia Gmbh Irradiated fuel storage facility - with transversely mounted beams supporting fuel elements giving economic construction
DE7626962U1 (en) * 1976-08-28 1976-12-23 Gg. Noell Gmbh, 8700 Wuerzburg BEARING FRAME FOR THE ACCOMMODATION OF USED FUEL ELEMENTS FOR NUCLEAR POWER PLANTS

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2259669A1 (en) * 1972-12-06 1974-06-12 Licentia Gmbh Irradiated fuel storage facility - with transversely mounted beams supporting fuel elements giving economic construction
DE7626962U1 (en) * 1976-08-28 1976-12-23 Gg. Noell Gmbh, 8700 Wuerzburg BEARING FRAME FOR THE ACCOMMODATION OF USED FUEL ELEMENTS FOR NUCLEAR POWER PLANTS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2516694A1 (en) * 1981-11-13 1983-05-20 Alkem Gmbh STORAGE DEVICE FOR FUEL BARS OF NUCLEAR REACTOR COMBUSTIBLE ELEMENTS

Also Published As

Publication number Publication date
DE2841408C2 (en) 1983-12-15

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