EP1525591A2 - Paroi de protection a blindage anti-poincon pour conteneur et conteneur comprenant au moins une telle paroi - Google Patents
Paroi de protection a blindage anti-poincon pour conteneur et conteneur comprenant au moins une telle paroiInfo
- Publication number
- EP1525591A2 EP1525591A2 EP03712295A EP03712295A EP1525591A2 EP 1525591 A2 EP1525591 A2 EP 1525591A2 EP 03712295 A EP03712295 A EP 03712295A EP 03712295 A EP03712295 A EP 03712295A EP 1525591 A2 EP1525591 A2 EP 1525591A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- protective wall
- container
- plate
- wall
- support means
- 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
Links
Classifications
-
- 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
- G21F5/08—Shock-absorbers, e.g. impact buffers for containers
Definitions
- the present invention relates to the field of containers intended for transporting / storing sensitive materials, such as radioactive materials. More particularly, the invention relates to protective walls with anti-punch armor used to produce the side face (s), the bottom, and the removable cover (s) of such containers.
- the containers for nuclear materials are of substantially cylindrical or parallelepiped shape.
- These containers are usually composed of one or more side faces, a fixed bottom, a cover, and one or more removable protective covers, the latter being respectively located at one and the other of the container ends.
- the side (s), the bottom and the lid of the container define an enclosure of containment located inside the container, in which the nuclear material is securely placed.
- the side face (s), the bottom, and the removable protective cover (s) of the container generally comprise a protective wall produced by a stack of layers and plates each having at least one distinct function, so that the container has certain characteristics enabling it to meet regulatory safety requirements for the transport / storage of nuclear materials.
- this punching test consists in raising the container to one meter above a cylindrical punch of fifteen centimeters in diameter, then to drop it by gravity on the punch. To pass this test, it is necessary that the punch does not puncture the elements of the container delimiting the confinement enclosure.
- the protective wall is designed to perform other functions than that linked to resistance to puncture.
- the protective wall so that the container can meet regulatory safety requirements, must have thermal characteristics of the fire type, and / or energy absorption characteristics of falls from 9 meters .
- the protective walls must still be able to preserve the confinement enclosure as well as all the components such as the seals, from an excessively high temperature encountered during the test. fire, also known as a "fire test".
- Protective walls with anti-punching shielding comprising three elements superimposed on each other. To produce such walls, the elements are positioned so that an external plate and an internal steel plate sandwich a fire-resistant layer, the latter being made of a material with low crushing stress allowing 'absorb the falling energy.
- An intermediate plate made of steel or composite material, is placed under the damping layer, and is in lower contact with a layer • deformable in compression, with low crushing stress and which may have fire-fighting properties.
- the fifth and last element of the protective wall is constituted by a rigid internal steel plate, with high mechanical resistance.
- the object of the invention is firstly to present a protective wall with an anti-punch armor for a container, this protective wall at least partially remedying the drawbacks mentioned above relating to the embodiments of the prior art. More specifically, the object of the invention is to propose a protective wall with anti-shielding container punch, this wall enabling the container to meet all of the regulatory safety tests for the transport / storage of nuclear material, these tests may be such as the punching test, the 9-meter drop test, or again the fire test.
- the object of the invention is to propose a wall such that a container provided with this can satisfy a mass limitation imposed by operational constraints.
- the invention also aims to present a container comprising at least one protective wall such as that meeting the aims described above.
- the invention firstly relates to a protective wall with an anti-punch armor for a container, the wall comprising support means and the following respective superimposed elements: - an external plate;
- the intermediate plate is positioned non-rigidly relative to the support means.
- the intermediate plate in contact with the second damping layer, is not rigidly assembled with the support means.
- This specific characteristic of the invention makes it possible to obtain a protective wall with anti-punching armor of limited mass and resistant to the punching test. Indeed, after having crossed the external plate and crushed the first damping layer, the punch urges the intermediate plate. During this stress, the intermediate plate being entirely mobile or weakly held relative to the support means, the force transmitted to the intermediate plate is distributed almost uniformly over a large part of the surface of this plate, consequently causing a displacement of this plate and a crushing of the second damping layer over a very large surface of the latter. Unlike the walls of the prior art
- the intermediate plate of the wall according to the invention is arranged so as to be made movable relative to the support means, under the effect of mechanical stresses generated by the force of the punch.
- the embedding by welding of the intermediate plate on the support means practiced in the embodiments of the prior art, conversely leads to a stress on the intermediate plate in very localized regions, which can cause tearing of the intermediate plate, as well as the rupture of the confinement of the second damping layer.
- This drawback drawback is even greater when the second intermediate layer has a thermal protection function. Indeed, in such a case, the second layer depreciation no longer provides satisfactory protection against fire in the containment.
- the invention has all the characteristics required to allow the container to meet regulatory requirements, without having to oversize the plates constituting the protective wall.
- the protective wall with anti-punch armor according to the invention provides a simple solution, independent of the existing compromise of the prior art.
- the external and internal plates of the wall are rigidly connected to the support means.
- the intermediate plate rests on a plurality of wedges spaced from each other and integral with the support means.
- the wedges are integral with lateral beams belonging to the support means, and that the intermediate plate is connected to each wedge using at least one frangible rivet.
- the intermediate plate is held by the support means using at least one flexible tongue interposed between the support means and said intermediate layer.
- the intermediate plate bears on the one hand against the first layer damping and secondly against the second damping layer, and completely free relative to the support means.
- the invention also relates to a container comprising at least one lateral face, a bottom, and at least one removable cover.
- a container comprising at least one lateral face, a bottom, and at least one removable cover.
- at least one element taken from the group consisting of each lateral face, of the bottom, and of each removable cover of the container comprises a protective wall such as that described above.
- FIG. 1 shows a partial sectional view of a container comprising side faces comprising a protective wall according to a first preferred embodiment of the invention, a bottom and a removable cover comprising a protective wall according to a third mode preferred embodiment of the invention;
- FIG. 2 shows a sectional view taken along line A-A of Figure 1;
- Figure 3 shows a partial view, on a larger scale, of Figure 3;
- - Figure 4 shows schematically, in section, a wall according to the first preferred embodiment of the invention, after the punching test;
- - Figure 5 shows a sectional view of a removable cover of a container comprising a protective wall according to a second preferred embodiment of one invention;
- - Figure 6 shows schematically, in section, a wall according to the third preferred embodiment of the invention, after the punching test.
- FIG. 1 there is shown a container 1 intended for transporting / storing sensitive materials, and preferably nuclear materials.
- Such a container 1 preferably of substantially parallelepiped shape, has four lateral faces 2, a bottom 4 rigidly fixed on the lateral faces 2 at a first end 1a of the container 1, a cover 16 and a removable cover 6 mounted on the lateral faces 2 at a second end 1b of the container 1.
- the assembly of the elements 2, 4, 16 constituting the container 1 leads to the production of a containment enclosure 8 in which barrels (not shown) of nuclear material can rest , their loading inside the confinement enclosure 8 can be carried out using guide rails 10.
- the lateral faces 2, the bottom 4 and the removable cover 6 are equipped with a protective wall 12 with anti-punch armor, of substantially parallelepiped shape, designed in particular to resist the punching test carried out during regulatory safety tests for the transport / storage of nuclear material.
- the protective walls 12 each rest on a rigid lattice structure 14, these structures 14 also having the function of delimiting the confinement enclosure 8.
- the protective walls 12 are held on the container 1 by means of supports further comprising lateral beams 18.
- Each lateral beam 18, extending parallel to a longitudinal axis of the container 1, can be used to hold two protective walls 12 belonging to two lateral faces 2, placed at 90 ° relative to each other.
- these lateral beams 18 consist of one or more sheets 20 defining a space 22 filled with wood such as balsa.
- each protective wall 12 with anti-punch armor comprises five elements superimposed on each other.
- This plate 24 constitutes the first element with which a punch comes into contact, when carrying out a punching test.
- first damping layer 26 may be made of a material with low crushing stress, and is intended to partially absorb the fall energy emanating from the punching test.
- the first damping layer 26, about 60 mm thick is made of wood such as plywood or balsa wood, porous concrete, or phenolic foam.
- the main direction of the fibers is preferably orthogonal to the longitudinal axis of the container 1.
- the protective wall 12 also comprises an intermediate plate 28, either of stainless steel with high yield strength or of composite material.
- This intermediate plate 28 has a thickness of between approximately 6 and 10 mm, the thickness varying as a function of the total mass of the container 1.
- the intermediate plate 28 constitutes the external part of a confinement of a second damping layer 30, having in particular an anti-fire function.
- This second damping layer 30, about 120 mm thick, is preferably made of phenolic foam.
- this second damping layer 30 can also be made of wood such as plywood or balsa, the main direction of the fibers of which is the same as that of the balsa fibers constituting the first damping layer 26.
- the second damping layer 30 can also consist of a material such as porous concrete, and will preferably be less hard than the first damping layer 26.
- the last element of the protective wall 12, also used to produce the internal part of the confinement of the second damping layer 30, is an internal plate 32 of stainless steel, with a thickness of between approximately 6 and 8 mm.
- the internal plate 32 may be common to the protective wall 12 and to the lattice structure 14.
- the external plate 24 is rigidly fixed, preferably by welding, to the sheets 20 of the side beams 18 holding the wall of protection 12.
- the internal plate 32 is rigidly fixed to the sheets 20 of these same lateral beams 18.
- the external plate 24 and internal plate 32 are rigidly connected to one another by means of the beams side 18 belonging to the means for supporting the protective walls 12 on the container 1.
- the intermediate plate 28 is positioned in a non-rigid manner with respect to the sheets 20 of the side beams 18, and therefore is positioned non-rigidly with respect to the support means.
- a protective wall 12 with anti-punching shielding comprising an intermediate plate 28 resting on a plurality of shims 34, spaced from each other, and integral with the sheet 20 of the lateral beam 18.
- the shims 34 can be assembled by welding on the sheet 20, or can simply be obtained by deformation of this sheet 20.
- the intermediate plate 28 is connected to each wedge 34 using at least one frangible rivet 36, and preferably only one.
- the protective wall 12 strikes a punch 38.
- the punch 38 firstly crosses the external plate 24, then comes into contact with the first damping layer 26, the latter partially absorbing the fall energy on the punch.
- the intermediate plate 28 It is then up to the intermediate plate 28 to be mechanically stressed by the punch 38.
- the intermediate plate 28 is positioned non-rigidly with respect to the sheet 20 of the lateral beam 18.
- the shims 34 and the rivets 36 provided for positioning the intermediate plate 28 then act only as a mechanical fuse, and are arranged so that this intermediate plate 28 is released from the sheet 20 of the side beam 18, after an impact from the punch
- the rupture of the rivets 36 has the consequence of making the edges of this plate 28 completely free or simply bearing on the wedges 34.
- the force of the punch 38 on the intermediate plate 28 then causes a slight curvature of the latter, then a displacement of the intermediate plate 28 in a direction parallel to a longitudinal axis of the punch 38, towards the confinement enclosure 8.
- the displacement of the intermediate layer 28 causes the second damping layer 30 to be crushed over a large surface thereof, the intermediate plate 28 making it possible to distribute the forces over the whole of this large surface, which allows the fall energy to be taken up as much as possible by compression of this second deformable damping layer 30.
- a container 1 of substantially cylindrical shape for which only the removable cover 6 is provided with a protective wall 12 with anti-punch armor , also of substantially cylindrical shape.
- the side wall 42 of the container 1 is made in this case of a thick steel structure.
- the intermediate plate 28 is connected to a sheet 20 laterally matching the wall 12, and corresponding to the means for supporting this wall.
- the connection between the intermediate plate 28 and the sheet 20 is established by means of at least one flexible tongue 40, these tongues 40 being welded on the one hand to the sheets 20, and on the other hand to the intermediate plate 28.
- the intermediate plate 28 When carrying out a punching test, the intermediate plate 28 reacts in a similar manner to the intermediate plate 28 of the first preferred embodiment of the invention, the behavior of which following an impact of the punch 38 is shown in the figure 4.
- a protective wall 12 whose external plates 24 and internal 32 are integral with sheets 46 forming a frame around the protective wall 12, and belonging to means for supporting this wall 12. It is specified that the removable cover 6 of the container 1 also has a wall according to the third preferred embodiment of the invention and similar to the wall 12 of the bottom 4, and will therefore not be described further.
- the intermediate layer 28 bears on the one hand against the first damping layer 26, and on the other hand against the second damping layer 30.
- no specific connection is provided between the sheets 46 and the intermediate plate 28, so that this intermediate plate 28 is completely free relative to the sheets 46.
- the intermediate plate 28 when performing a punching test, completely free, moves towards the confinement enclosure 8 while retaining its substantially planar shape. We then witness, as in the preferred embodiments described above, a crushing of the second damping layer 30, and the conservation of the confinement of this layer 30.
- each of the three preferred embodiments of the invention can be adopted for the design of any of the side faces 2, of the bottom 4 or of any of the removable covers 6, of a container of substantially shaped parallelepiped, cylindrical or other.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Laminated Bodies (AREA)
- Rigid Containers With Two Or More Constituent Elements (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Building Environments (AREA)
- Buffer Packaging (AREA)
- Packages (AREA)
- Stackable Containers (AREA)
- Control And Other Processes For Unpacking Of Materials (AREA)
- Refuse Collection And Transfer (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0201621A FR2835958B1 (fr) | 2002-02-11 | 2002-02-11 | Paroi de protection a blindage anti-poincon pour conteneur et conteneur comprenant au moins une telle paroi |
FR0201621 | 2002-02-11 | ||
PCT/FR2003/000396 WO2003069633A2 (fr) | 2002-02-11 | 2003-02-07 | Paroi de protection a blindage anti-poincon pour conteneur et conteneur comprenant au moins une telle paroi |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1525591A2 true EP1525591A2 (fr) | 2005-04-27 |
EP1525591B1 EP1525591B1 (fr) | 2006-05-31 |
Family
ID=27620065
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03712295A Expired - Lifetime EP1525591B1 (fr) | 2002-02-11 | 2003-02-07 | Paroi de protection a blindage anti-poincon pour conteneur et conteneur comprenant au moins une telle paroi |
Country Status (9)
Country | Link |
---|---|
US (1) | US7514701B2 (fr) |
EP (1) | EP1525591B1 (fr) |
JP (1) | JP4372556B2 (fr) |
KR (1) | KR100978036B1 (fr) |
AT (1) | ATE328352T1 (fr) |
DE (1) | DE60305706T2 (fr) |
ES (1) | ES2266793T3 (fr) |
FR (1) | FR2835958B1 (fr) |
WO (1) | WO2003069633A2 (fr) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011247701A (ja) * | 2010-05-25 | 2011-12-08 | Mitsubishi Heavy Ind Ltd | 放射性物質格納容器 |
US11373774B2 (en) | 2010-08-12 | 2022-06-28 | Holtec International | Ventilated transfer cask |
WO2014117082A1 (fr) * | 2013-01-25 | 2014-07-31 | Holtec International | Château de transfert ventilé à élément de levage |
US11887744B2 (en) | 2011-08-12 | 2024-01-30 | Holtec International | Container for radioactive waste |
WO2013158914A1 (fr) | 2012-04-18 | 2013-10-24 | Holtec International, Inc. | Stockage et/ou transfert de déchets hautement radioactifs |
FR2971616B1 (fr) * | 2011-02-11 | 2017-04-07 | Robatel Ind | Capot amortisseur pour emballage de transport et ensemble de transport de matieres radioactives comportant un tel capot amortisseur |
FR2971615A1 (fr) * | 2011-02-11 | 2012-08-17 | Robatel Ind | Ensemble de transport comprenant un emballage et un dispositif d'amortissement |
FR3006098B1 (fr) * | 2013-05-22 | 2015-06-26 | Tn Int | Emballage d'entreposage de combustible irradie comprenant des rails amortis de guidage d'etui |
EP3062313B2 (fr) | 2015-02-26 | 2024-03-06 | GNS Gesellschaft für Nuklear-Service mbH | Récipient de réception de matériel d'exploitation radioactif et procédé de fabrication du récipient |
JP7227861B2 (ja) * | 2019-06-27 | 2023-02-22 | 日立造船株式会社 | 緩衝構造体 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3669299A (en) * | 1970-10-30 | 1972-06-13 | Uniroyal Inc | Mechanical and thermal damage protection and insulation materials usable therefor |
US3813281A (en) * | 1973-01-30 | 1974-05-28 | Gulf & Western Ind Prod Co | Composite flexible armor |
DE2830111C2 (de) * | 1978-07-08 | 1984-01-19 | Transnuklear Gmbh, 6450 Hanau | Deckelkonstruktion für Abschirmbehälter zum Transport und zur Lagerung bestrahtler Brennelemente |
US4190160A (en) * | 1979-03-06 | 1980-02-26 | The United States Of America As Represented By The United States Department Of Energy | Accident resistant transport container |
DE2915376C2 (de) * | 1979-04-14 | 1984-02-02 | Transnuklear Gmbh, 6450 Hanau | Behälterkombination für den Transport und die Lagerung bestrahlter Brennelemente aus Kernreaktoren |
DE3010518A1 (de) * | 1980-03-19 | 1981-10-01 | GNS Gesellschaft für Nuklear-Service mbH, 4300 Essen | Bauelementensatz fuer den abgeschirmten transport und fuer die abgeschirmte lagerung von radioaktiven substanzen |
JPH10206591A (ja) * | 1997-01-27 | 1998-08-07 | Hitachi Zosen Corp | 使用済燃料貯蔵容器 |
FR2790588A1 (fr) * | 1999-03-02 | 2000-09-08 | Commissariat Energie Atomique | Structure de paroi pour conteneur avec blindage anti-poincon |
FR2790589A1 (fr) * | 1999-03-02 | 2000-09-08 | Commissariat Energie Atomique | Structure de paroi pour conteneur avec blindage anti-poincon |
FR2804941B1 (fr) | 2000-02-15 | 2002-05-03 | Commissariat Energie Atomique | Structure de paroi amortisseuse de choc a hauteur energie et conteneur utilisant une telle structure |
US6489623B1 (en) * | 2000-11-07 | 2002-12-03 | Global Nuclear Fuel -- Americas, Llc | Shipping container for radioactive materials and methods of fabrication |
-
2002
- 2002-02-11 FR FR0201621A patent/FR2835958B1/fr not_active Expired - Lifetime
-
2003
- 2003-02-07 DE DE60305706T patent/DE60305706T2/de not_active Expired - Lifetime
- 2003-02-07 ES ES03712295T patent/ES2266793T3/es not_active Expired - Lifetime
- 2003-02-07 KR KR1020047012348A patent/KR100978036B1/ko not_active IP Right Cessation
- 2003-02-07 AT AT03712295T patent/ATE328352T1/de not_active IP Right Cessation
- 2003-02-07 JP JP2003568668A patent/JP4372556B2/ja not_active Expired - Fee Related
- 2003-02-07 WO PCT/FR2003/000396 patent/WO2003069633A2/fr active IP Right Grant
- 2003-02-07 US US10/503,864 patent/US7514701B2/en not_active Expired - Fee Related
- 2003-02-07 EP EP03712295A patent/EP1525591B1/fr not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO03069633A2 * |
Also Published As
Publication number | Publication date |
---|---|
KR20040079995A (ko) | 2004-09-16 |
FR2835958B1 (fr) | 2004-11-26 |
ES2266793T3 (es) | 2007-03-01 |
JP2005525543A (ja) | 2005-08-25 |
DE60305706T2 (de) | 2007-05-31 |
FR2835958A1 (fr) | 2003-08-15 |
JP4372556B2 (ja) | 2009-11-25 |
EP1525591B1 (fr) | 2006-05-31 |
WO2003069633A3 (fr) | 2004-04-08 |
ATE328352T1 (de) | 2006-06-15 |
WO2003069633A2 (fr) | 2003-08-21 |
DE60305706D1 (de) | 2006-07-06 |
US20050173432A1 (en) | 2005-08-11 |
KR100978036B1 (ko) | 2010-08-25 |
US7514701B2 (en) | 2009-04-07 |
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