WO2015075340A1 - Assembly for protecting a liner of a pool for storing and/or stockpiling or cooling fuel assemblies or radioactive waste stored in a storage rack - Google Patents

Assembly for protecting a liner of a pool for storing and/or stockpiling or cooling fuel assemblies or radioactive waste stored in a storage rack Download PDF

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Publication number
WO2015075340A1
WO2015075340A1 PCT/FR2014/052773 FR2014052773W WO2015075340A1 WO 2015075340 A1 WO2015075340 A1 WO 2015075340A1 FR 2014052773 W FR2014052773 W FR 2014052773W WO 2015075340 A1 WO2015075340 A1 WO 2015075340A1
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WIPO (PCT)
Prior art keywords
liner
pool
rack
protective plate
storing
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PCT/FR2014/052773
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French (fr)
Inventor
Bernard Kopecky
Original Assignee
Reel
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.)
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Publication date
Application filed by Reel filed Critical Reel
Priority to EP14806001.5A priority Critical patent/EP3072135A1/en
Publication of WO2015075340A1 publication Critical patent/WO2015075340A1/en

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    • 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

Definitions

  • the present invention relates to the technical sector of the nuclear industry, including the technical sector racks storage fuel assemblies or other racks for storage of waste, which racks are embedded in pools for cooling said fuel assemblies.
  • the invention relates in particular to a protection assembly of a liner of a deactivation pool or a pool for storing and / or storing the fuel; in the following the term cooling pool will be retained.
  • Storage racks also commonly referred to as “racks”, are in the form of crates in which fuel assemblies or highly irradiating waste are stored vertically. These racks are then embedded and deposited at the bottom of a pool for cooling said fuel assemblies.
  • a vacuum rack usually weighs from a few tons to several tens of tons and can contain from 50 to 100 fuels, each weighing several hundred kilos depending on the nature of the fuel or waste.
  • the storage racks generally including feet, are placed directly on the liner of the pool which is usually stainless steel.
  • the liner is of small thickness, of the order of 3 to 6 millimeters, and consists of large sheets welded together.
  • the weld zones generally form a prominent projection relative to the surface of the liner thus defined.
  • the liner can be subjected to strong mechanical stress, especially in case of earthquakes. Indeed, during an earthquake, the racks that are simply placed at the bottom of the pool slide freely on the surface of the stainless steel liner and may be caused to move relative to the pool bottom. Depending on the power level of the earthquake the movement of the racks can be from a few millimeters to several tens of centimeters.
  • Another difficulty lies in the fact that the feet of the racks abut, during the movement of said racks, against the protuberance of the pool bottom and in particular against the prominent weld lines of the constituent plates of the liner causing locally extremely important constraints with risks of tearing of said liner.
  • One of the aims of the invention is therefore to remedy the aforementioned drawbacks by proposing a protection assembly for a liner of a deactivation pool or a pool for storing and / or storing or cooling the fuel. fuel assemblies or irradiating waste stored in a storage rack.
  • a protection assembly for a liner of a deactivation pool or a pool for storing and / or storing or cooling the fuel. fuel assemblies or irradiating waste stored in a storage rack.
  • it has been developed a set of protection of a liner of a storage pool and / or storage of fuel assemblies or cooling fuel assemblies stored in a storage rack, said liner consisting of large stainless steel sheets welded together.
  • the protection assembly is composed of a protective sheet made of stainless steel or other material having a high coefficient of friction with the liner, of the same grade, that is to say of same material as the liner where of a grade such that it generates a high coefficient of friction in contact with the liner whose dimensions are such that it is able to cover the surface of the liner or part of the surface of said cooling pool , located under the rack, and sliding pads made of a material with a low coefficient of friction with stainless steel.
  • Said protective sheet is intended to be arranged on the liner of the pool, and the pads are intended to be fixed under feet that includes the storage rack or directly under the rack to make contact with the protective sheet.
  • the protective sheet does not include prominent welds, there is no problem obstacle to sliding racks in the pool.
  • the invention makes it possible to considerably reduce the stresses on the liner since the horizontal forces are small because of the non slip of the protective sheet on the liner. There is also little or no slip between the liner and the pool concrete.
  • the protective plate may comprise on its surface intended to be in contact with the liner, grooves adapted to accommodate the protruding welds of the constituent laminations of said liner. A discontinuity of the protective plate is also possible when the pad remains in contact with all or part of the protective plate.
  • the coefficient of friction of the pads with the stainless steel is of the order of 0.1-0.4.
  • FIG. 1 is a diagrammatic view illustrating a storage rack for fuel assemblies placed on a liner of a cooling pool not equipped with the protection assembly according to the invention
  • Figure 2 is a schematic view illustrating the protection assembly according to the invention, the figure being in enlarged view at one of the feet of the rack.
  • FIG. 1 illustrates the current state of the art.
  • This FIG. 1 shows a storage rack (1) for fuel assemblies placed on a liner (2) of a cooling pool (3).
  • the liner (2) consists of large sheets (4) welded together.
  • Figure 2 illustrates the solution proposed by the invention. It represents the protection assembly (5) according to the invention. It consists of a protective plate (6) made of stainless steel and sliding pads (7) for the feet (8) of the rack (1).
  • the protective sheet (6) has dimensions such that it is able to cover the surface or part of the surface of the liner (2) of the cooling pool (3) located under the rack or under the feet (8) of which he is equipped. The chosen materials and the surface condition generate a high coefficient of friction in contact with the liner.
  • the protective sheet (6) typically has a thickness of between two and six millimeters.
  • the pads (7) are made of a material with a low coefficient of friction with stainless steel, a coefficient of preference of 0.1 to 0.4, and in particular 0.15.
  • the protective plate (6) is arranged on the liner (2) of the pool (3), and the pads (7) are fixed under the rack (1) (usually equipped with feet) to make contact with the sheet metal. protection (6).
  • the protective plate (6) comprises on its surface facing the liner (2), grooves (9) or recesses, suitable for housing the welds (10) or protuberances of the constituent laminations of the liner (2) to limit the mechanical stresses at said welds (10), and to ensure the flatness of the protective sheet (6).

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

The invention relates to an assembly (5) for protecting a liner (2) of a pool (3) for storing and/or stockpiling radioactive waste stored in a storage rack, in which said liner (2) is made up of sheets of stainless steel which are welded together (10), composed of: a protective sheet (6) also made of stainless steel or another material having a high friction coefficient with the liner, in which the dimensions are such as to be capable of covering all or part of the surface of the liner (2) of said cooling pool (3); and skids (7) made of a material that has a low friction coefficient with the protective sheet. The protective sheet (6) is intended for being arranged on the liner (2) of the pool (3), and the skids (7) are intended for being attached under feet (8) which are part of the rack or directly under the rack in order to provide contact with the protective sheet (6).

Description

ENSEMBLE DE PROTECTION D'UN LINER D'UNE PISCINE D'ENTREPOSAGE ET/OU DE STOCKAGE OU DE REFROIDISSEMENT D'ASSEMBLAGES COMBUSTIBLES OU DE DECHETS IRRADIANTS STOCKES DANS UN RATELIER DE STOCKAGE DOMAINE TECHNIQUE  PROTECTIVE ASSEMBLY FOR A LINER OF A POOL FOR STORAGE AND / OR STORAGE OR COOLING OF COMBUSTIBLE ASSEMBLIES OR IRRADIAN WASTE STORED IN A STORAGE BOAT TECHNICAL FIELD
La présente invention se rapporte au secteur technique de l'industrie nucléaire, et notamment au secteur technique des râteliers de stockage des assemblages de combustibles ou autres râteliers de stockage des déchets, lesquels râteliers étant noyés dans des piscines pour le refroidissement desdits assemblages combustibles. The present invention relates to the technical sector of the nuclear industry, including the technical sector racks storage fuel assemblies or other racks for storage of waste, which racks are embedded in pools for cooling said fuel assemblies.
L'invention concerne notamment un ensemble de protection d'un liner d'une piscine de désactivation ou d'une piscine d'entreposage et/ou de stockage du combustible ; dans la suite le terme piscine de refroidissement sera retenu. The invention relates in particular to a protection assembly of a liner of a deactivation pool or a pool for storing and / or storing the fuel; in the following the term cooling pool will be retained.
ETAT ANTERIEUR DE LA TECHNIQUE PRIOR STATE OF THE TECHNIQUE
Les râteliers de stockage, également couramment appelés « racks », se présentent sous la forme de caisses dans lesquelles sont stockés verticalement des assemblages combustibles ou des déchets fortement irradiants. Ces râteliers sont ensuite noyés et déposés au fond d'une piscine pour le refroidissement desdits assemblages combustibles. Storage racks, also commonly referred to as "racks", are in the form of crates in which fuel assemblies or highly irradiating waste are stored vertically. These racks are then embedded and deposited at the bottom of a pool for cooling said fuel assemblies.
Un râtelier à vide pèse généralement de quelques tonnes à plusieurs dizaines de tonnes et peut contenir de 50 à 100 combustibles, chacun pesant plusieurs centaines de kilos suivant la nature du combustible ou des déchets. A vacuum rack usually weighs from a few tons to several tens of tons and can contain from 50 to 100 fuels, each weighing several hundred kilos depending on the nature of the fuel or waste.
Les râteliers de stockage comprenant généralement des pieds, sont posés directement sur le liner de la piscine qui est généralement en acier inoxydable. Le liner est de faible épaisseur, de l'ordre de 3 à 6 millimètres, et est constitué de larges tôles soudées entre elles. Les zones de soudure forment généralement une saillie proéminente par rapport à la surface du liner ainsi défini. Le liner peut être soumis à de fortes contraintes mécaniques, notamment en cas de séismes. En effet, lors d'un séisme, les râteliers qui sont simplement posés au fond de la piscine glissent librement sur la surface du liner en inox et peuvent être amenés à se déplacer en relatif par rapport au fond de piscine. Suivant le niveau de puissance du séisme le déplacement des râteliers peut être de quelques millimètres à plusieurs dizaines de centimètres. The storage racks generally including feet, are placed directly on the liner of the pool which is usually stainless steel. The liner is of small thickness, of the order of 3 to 6 millimeters, and consists of large sheets welded together. The weld zones generally form a prominent projection relative to the surface of the liner thus defined. The liner can be subjected to strong mechanical stress, especially in case of earthquakes. Indeed, during an earthquake, the racks that are simply placed at the bottom of the pool slide freely on the surface of the stainless steel liner and may be caused to move relative to the pool bottom. Depending on the power level of the earthquake the movement of the racks can be from a few millimeters to several tens of centimeters.
Ce déplacement des râteliers de stockage engendre des efforts de glissement conséquents avec d'importantes contraintes mécaniques, provoquant des phénomènes de grippages de la surface inférieure des râteliers sur le liner, et des dégradations dudit liner. De même, des sollicitations mécaniques importantes se font ressentir au niveau du contact entre le liner et la piscine elle-même généralement réalisée en béton. This movement of the storage racks generates significant sliding forces with significant mechanical stress, causing seizing phenomena of the lower surface of the racks on the liner, and degradations of said liner. Similarly, significant mechanical stresses are felt at the contact between the liner and the pool itself usually made of concrete.
On est donc confronté à un double phénomène de glissement, l'un intervenant entre le râtelier et le liner, et l'autre intervenant entre le liner et le béton de la piscine. We are therefore confronted with a double sliding phenomenon, one intervening between the rack and the liner, and the other intervening between the liner and the concrete of the pool.
Une autre difficulté réside dans le fait que les pieds des râteliers viennent buter, lors du déplacement desdits râteliers, contre les protubérance de fond de piscine et en particulier contre les lignes de soudure proéminentes des plaques constitutives du liner entraînant localement des contraintes extrêmement importantes avec des risques de déchirements dudit liner. Another difficulty lies in the fact that the feet of the racks abut, during the movement of said racks, against the protuberance of the pool bottom and in particular against the prominent weld lines of the constituent plates of the liner causing locally extremely important constraints with risks of tearing of said liner.
Les phénomènes précités ont pour conséquences d'affaiblir la résistance des liners tout en imposant des niveaux de contraintes très élevés. Ces inconvénients augmentent fortement les risques de rupture du liner avec comme conséquence une fuite de l'eau de la piscine de refroidissement, et un dénoyage des assemblages combustibles avec toutes les autres conséquences que cela induit. The aforementioned phenomena have the effect of weakening the resistance of the liners while imposing very high levels of constraints. These disadvantages greatly increase the risk of rupture of the liner resulting in leakage of water from the cooling pool, and dewatering of the fuel assemblies with all the other consequences that this entails.
Aucune solution n'a à ce jour été envisagée pour répondre aux inconvénients précités. EXPOSE DE L'INVENTION No solution has been envisaged to date to meet the aforementioned drawbacks. SUMMARY OF THE INVENTION
L'un des buts de l'invention est donc de remédier aux inconvénients précités en proposant un ensemble de protection d'un liner d'une piscine de désactivation ou d'une piscine d'entreposage et/ou de stockage ou de refroidissement du combustible d'assemblages combustibles ou de déchets irradiants stockés dans un râtelier de stockage. A cet effet, il a donc été mis au point un ensemble de protection d'un liner d'une piscine d'entreposage et/ou de stockage d'assemblages combustibles ou de refroidissement d'assemblages combustibles stockés dans un râtelier de stockage, ledit liner étant constitué de larges tôles en acier inoxydable soudées entre elles. One of the aims of the invention is therefore to remedy the aforementioned drawbacks by proposing a protection assembly for a liner of a deactivation pool or a pool for storing and / or storing or cooling the fuel. fuel assemblies or irradiating waste stored in a storage rack. For this purpose, it has been developed a set of protection of a liner of a storage pool and / or storage of fuel assemblies or cooling fuel assemblies stored in a storage rack, said liner consisting of large stainless steel sheets welded together.
Conformément à l'invention, l'ensemble de protection est composé, d'une tôle de protection en acier inoxydable ou autre matériau disposant d'un coefficient de frottement élevé avec le liner, de même nuance, c'est-à-dire de même matériau que le liner où d'une nuance telle qu'elle génère un coefficient de frottement élevé au contact du liner dont les dimensions sont telles qu'elle est apte à recouvrir la surface du liner ou partie de la surface de ladite piscine de refroidissement, située sous le râtelier, et de patins de glissement réalisés en un matériau à faible coefficient de frottement avec l'acier inoxydable. Ladite tôle de protection est destinée à être disposée sur le liner de la piscine, et les patins sont destinés à être fixés sous des pieds que comprend le râtelier de stockage ou directement sous le râtelier pour réaliser le contact avec la tôle de protection. According to the invention, the protection assembly is composed of a protective sheet made of stainless steel or other material having a high coefficient of friction with the liner, of the same grade, that is to say of same material as the liner where of a grade such that it generates a high coefficient of friction in contact with the liner whose dimensions are such that it is able to cover the surface of the liner or part of the surface of said cooling pool , located under the rack, and sliding pads made of a material with a low coefficient of friction with stainless steel. Said protective sheet is intended to be arranged on the liner of the pool, and the pads are intended to be fixed under feet that includes the storage rack or directly under the rack to make contact with the protective sheet.
Dans un tel ensemble de protection, les efforts horizontaux transmis à la tôle de protection du fait du déplacement des râteliers lors d'un séisme sont considérablement réduits puisque le coefficient de frottement entre les patins et la tôle de protection est faible. In such a protection assembly, the horizontal forces transmitted to the protective plate due to the movement of the racks during an earthquake are considerably reduced since the coefficient of friction between the pads and the protective plate is low.
De plus, il n'y a pas de glissement de la tôle de protection sur le liner puisque l'on est dorénavant en présence d'un contact inox / inox comprenant, de fait, un haut coefficient de frottement, qui est en moyenne supérieur à celui du contact entre les râteliers et la tôle de protection. L'état de surface de la tôle de protection en contact avec le liner pourra être adapté pour maximiser le coefficient de frottement avec le liner. Typiquement, ce coefficient de frottement est compris entre 0,2 et 0,8, et est notamment voisin de 0,4. In addition, there is no slippage of the protective plate on the liner since it is now in the presence of a stainless steel / stainless contact comprising, in fact, a high coefficient of friction, which is on average higher to that of the contact between the racks and the protective plate. The surface state of the protective sheet in contact with the liner can be adapted to maximize the coefficient of friction with the liner. Typically, this coefficient of friction is between 0.2 and 0.8, and is in particular close to 0.4.
La tôle de protection ne comprend pas de soudures proéminentes, il n'y a plus de problème d'obstacle au glissement des râteliers dans la piscine. The protective sheet does not include prominent welds, there is no problem obstacle to sliding racks in the pool.
Ainsi, l'invention permet de réduire considérablement les contraintes sur le liner puisque les efforts horizontaux sont faibles du fait du non glissement de la tôle de protection sur le liner. Il n'y a donc également peu ou pas de glissement entre le liner et le béton de la piscine. Thus, the invention makes it possible to considerably reduce the stresses on the liner since the horizontal forces are small because of the non slip of the protective sheet on the liner. There is also little or no slip between the liner and the pool concrete.
Il n'y a en effet plus ou peu de phénomènes de double glissement (tôle de protection / liner et rack / tôle de protection) qui avaient pour effet d'augmenter l'amplitude du déplacement des râteliers dans la piscine. Avantageusement, la tôle de protection peut comprendre sur sa surface destinée à être en contact avec le liner, des rainures aptes à loger les soudures proéminentes des tôles constitutives dudit liner. Une discontinuité de la tôle de protection est également possible dès lors que le patin reste en contact de tout ou partie de la tôle de protection. There is indeed more or little double slip phenomena (protective sheet / liner and rack / protective sheet) which had the effect of increasing the amplitude of movement of the racks in the pool. Advantageously, the protective plate may comprise on its surface intended to be in contact with the liner, grooves adapted to accommodate the protruding welds of the constituent laminations of said liner. A discontinuity of the protective plate is also possible when the pad remains in contact with all or part of the protective plate.
De préférence, le coefficient de frottement des patins avec l'inox est de l'ordre de 0,1-0,4. Preferably, the coefficient of friction of the pads with the stainless steel is of the order of 0.1-0.4.
BREVE DESCRIPTION DES DESSINS D'autres caractéristiques et avantages de l'invention ressortiront clairement de la description qui en est réalisée ci-après, à titre indicatif et nullement limitatif, en référence aux figures annexées dans lesquelles : la figure 1 est une vue schématique illustrant un râtelier de stockage d'assemblages combustibles posé sur un liner d'une piscine de refroidissement non équipée de l'ensemble de protection selon l'invention ; la figure 2 est une vue schématique illustrant l'ensemble de protection selon l'invention, la figure étant en vue agrandie au niveau de l'un des pieds du râtelier. BRIEF DESCRIPTION OF THE DRAWINGS Other characteristics and advantages of the invention will emerge clearly from the description which is given hereinafter, by way of indication and in no way limitative, with reference to the appended figures in which: FIG. 1 is a diagrammatic view illustrating a storage rack for fuel assemblies placed on a liner of a cooling pool not equipped with the protection assembly according to the invention; Figure 2 is a schematic view illustrating the protection assembly according to the invention, the figure being in enlarged view at one of the feet of the rack.
EXPOSE DETAILLE DE L'INVENTION DETAILED DESCRIPTION OF THE INVENTION
La figure 1 illustre l'état de la technique actuel. Il est représenté sur cette figure 1, un râtelier de stockage (1) d'assemblages combustibles posé sur un liner (2) d'une piscine de refroidissement (3). Le liner (2) est constitué de larges tôles (4) soudées entre elles. Figure 1 illustrates the current state of the art. This FIG. 1 shows a storage rack (1) for fuel assemblies placed on a liner (2) of a cooling pool (3). The liner (2) consists of large sheets (4) welded together.
Une telle configuration présente, lors des déplacements du râtelier (1) du fait de séismes, les inconvénients précités, notamment en termes de contraintes mécaniques élevées, et risques de dégradation du liner (2). Such a configuration has, during movements of the rack (1) due to earthquakes, the aforementioned drawbacks, especially in terms of high mechanical stresses, and risks of degradation of the liner (2).
La figure 2 illustre la solution proposée par l'invention. Elle représente l'ensemble de protection (5) selon l'invention. Celui-ci est composé d'une tôle de protection (6) réalisée en acier inoxydable et de patins de glissement (7) pour les pieds (8) du râtelier (1). La tôle de protection (6) possède des dimensions telles qu'elle est apte à recouvrir la surface ou partie de la surface du liner (2) de la piscine de refroidissement (3) située sous le râtelier ou sous les pieds (8) dont il est muni. Les matériaux choisis ainsi que l'état de surface génèrent un coefficient de frottement élevé au contact du liner. La tôle de protection (6) présente typiquement une épaisseur comprise entre deux et 6 millimètres. Figure 2 illustrates the solution proposed by the invention. It represents the protection assembly (5) according to the invention. It consists of a protective plate (6) made of stainless steel and sliding pads (7) for the feet (8) of the rack (1). The protective sheet (6) has dimensions such that it is able to cover the surface or part of the surface of the liner (2) of the cooling pool (3) located under the rack or under the feet (8) of which he is equipped. The chosen materials and the surface condition generate a high coefficient of friction in contact with the liner. The protective sheet (6) typically has a thickness of between two and six millimeters.
Les patins (7) sont quant à eux réalisés en un matériau à faible coefficient de frottement avec l'inox, coefficient de préférence de 0,1 à 0,4, et notamment 0,15. The pads (7) are made of a material with a low coefficient of friction with stainless steel, a coefficient of preference of 0.1 to 0.4, and in particular 0.15.
La tôle de protection (6) est disposée sur le liner (2) de la piscine (3), et les patins (7) sont fixés sous le râtelier (1) (généralement équipé de pieds) pour réaliser le contact avec la tôle de protection (6). The protective plate (6) is arranged on the liner (2) of the pool (3), and the pads (7) are fixed under the rack (1) (usually equipped with feet) to make contact with the sheet metal. protection (6).
La tôle de protection (6) comprend sur sa surface en regard du liner (2), des rainures (9) ou évidements, aptes à loger les soudures (10) ou protubérances des tôles constitutives du liner (2) pour limiter les contraintes mécaniques au niveau desdites soudures (10), et pour garantir la planéité de la tôle de protection (6). The protective plate (6) comprises on its surface facing the liner (2), grooves (9) or recesses, suitable for housing the welds (10) or protuberances of the constituent laminations of the liner (2) to limit the mechanical stresses at said welds (10), and to ensure the flatness of the protective sheet (6).
De cette manière, les contraintes mécaniques sur le liner (2) de la piscine (3) sont considérablement réduites et celui-ci n'est pas dégradé. In this way, the mechanical stresses on the liner (2) of the pool (3) are considerably reduced and it is not degraded.

Claims

REVENDICATIONS
1. Ensemble de protection (5) d'un liner (2) d'une piscine (3) d'entreposage et/ou de stockage ou de refroidissement d'assemblages combustibles ou de déchets irradiants stockés dans un râtelier de stockage (1), ledit liner (2) étant constitué de tôles en acier inoxydables soudées entre elles (10), caractérisé en ce que l'ensemble de protection (5) est composé : 1. Protection assembly (5) for a liner (2) of a swimming pool (3) for storing and / or storing or cooling fuel assemblies or irradiating waste stored in a storage rack (1) , said liner (2) consisting of welded stainless steel sheets (10), characterized in that the protection assembly (5) is composed of:
• d'une tôle de protection (6) également réalisée en acier inoxydable ou autre matériau disposant d'un coefficient de frottement élevé avec le liner, dont les dimensions sont telles qu'elle recouvre au moins la surface du liner (2) de ladite piscine de refroidissement (3) située sous le râtelier, et  A protective plate (6) also made of stainless steel or other material having a high coefficient of friction with the liner, the dimensions of which are such that it covers at least the surface of the liner (2) of said cooling pool (3) under the rack, and
• de patins de glissement (7) réalisés en un matériau à faible coefficient de frottement avec la tôle de protection (6),  Sliding shoes (7) made of a material with a low coefficient of friction with the protective plate (6),
ladite tôle de protection (6) étant destinée à être disposée sur le liner (2) de la piscine (3), et les patins (7) étant destinés à être fixés sous des pieds (8) que comprend le râtelier (1) ou directement sous le râtelier pour réaliser le contact avec la tôle de protection (6).  said protective sheet (6) being intended to be disposed on the liner (2) of the swimming pool (3), and the pads (7) being intended to be fixed under feet (8) that comprises the rack (1) or directly below the rack to make contact with the protective plate (6).
2. Ensemble de protection (5) selon la revendication 1, caractérisé en ce que la tôle de protection (6) comprend sur sa surface en regard du liner (2), des rainures (9) aptes à loger les soudures (10) d'assemblage des tôles constitutives du liner (2). 2. Protection assembly (5) according to claim 1, characterized in that the protective plate (6) comprises on its surface facing the liner (2), grooves (9) adapted to accommodate the welds (10) d assembly of the constituent laminations of the liner (2).
3. Ensemble de protection (5) selon l'une des revendications 1 et 2, caractérisé en ce que le coefficient de frottement des patins (7) avec la tôle de protection est égal à environ 0, 1 -0,4, et notamment 0,15. 3. Protection assembly (5) according to one of claims 1 and 2, characterized in that the coefficient of friction of the pads (7) with the protective plate is equal to about 0, 1 -0.4, and in particular 0.15.
4. Ensemble de protection (5) selon l'une des revendications 1 à 3, caractérisé en ce que le coefficient de frottement de la tôle de protection (6) est compris entre 0,2 et 0,8, et est notamment voisin de 0,4. 4. Protection assembly (5) according to one of claims 1 to 3, characterized in that the coefficient of friction of the protective plate (6) is between 0.2 and 0.8, and is particularly close to 0.4.
PCT/FR2014/052773 2013-11-21 2014-10-31 Assembly for protecting a liner of a pool for storing and/or stockpiling or cooling fuel assemblies or radioactive waste stored in a storage rack WO2015075340A1 (en)

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EP14806001.5A EP3072135A1 (en) 2013-11-21 2014-10-31 Assembly for protecting a liner of a pool for storing and/or stockpiling or cooling fuel assemblies or radioactive waste stored in a storage rack

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1361469 2013-11-21
FR1361469A FR3013499B1 (en) 2013-11-21 2013-11-21 PROTECTIVE ASSEMBLY FOR A LINER OF A POOL FOR STORAGE AND / OR STORAGE OR COOLING OF COMBUSTIBLE ASSEMBLIES OR IRRADIAN WASTE STORED IN A STORAGE RACK

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WO2015075340A1 true WO2015075340A1 (en) 2015-05-28

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2146353A1 (en) * 2008-06-26 2010-01-20 Cci Ag Storage rack system for storing nuclear reactor fuel assemblies
JP2012088234A (en) * 2010-10-21 2012-05-10 Mitsubishi Heavy Ind Ltd Nuclear fuel storage rack

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS635499U (en) * 1986-06-27 1988-01-14

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2146353A1 (en) * 2008-06-26 2010-01-20 Cci Ag Storage rack system for storing nuclear reactor fuel assemblies
JP2012088234A (en) * 2010-10-21 2012-05-10 Mitsubishi Heavy Ind Ltd Nuclear fuel storage rack

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FR3013499A1 (en) 2015-05-22
EP3072135A1 (en) 2016-09-28
FR3013499B1 (en) 2015-11-27

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