EP3365896A1 - Dispositif de stockage de materiaux dangereux - Google Patents
Dispositif de stockage de materiaux dangereuxInfo
- Publication number
- EP3365896A1 EP3365896A1 EP16785164.1A EP16785164A EP3365896A1 EP 3365896 A1 EP3365896 A1 EP 3365896A1 EP 16785164 A EP16785164 A EP 16785164A EP 3365896 A1 EP3365896 A1 EP 3365896A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shock absorber
- elements
- frame
- enclosure
- support member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 229910052500 inorganic mineral Inorganic materials 0.000 title abstract 3
- 239000011707 mineral Substances 0.000 title abstract 3
- 230000035939 shock Effects 0.000 claims abstract description 70
- 239000006096 absorbing agent Substances 0.000 claims abstract description 66
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 239000000383 hazardous chemical Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 239000000463 material Substances 0.000 description 4
- 239000002901 radioactive waste Substances 0.000 description 3
- 230000000284 resting effect Effects 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000002285 radioactive effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 231100000481 chemical toxicant Toxicity 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 239000003758 nuclear fuel Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
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
- G21C19/40—Arrangements for preventing occurrence of critical conditions, e.g. during storage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
- B65D81/05—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents
- B65D81/107—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents using blocks of shock-absorbing material
-
- 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
-
- 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
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/04—Treating liquids
- G21F9/20—Disposal of liquid waste
- G21F9/22—Disposal of liquid waste by storage in a tank or other container
-
- 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 storage of hazardous materials. These hazardous materials are, for example, radioactive waste.
- the used operating equipment includes the reactor control cluster guide tubes for the nuclear reactor.
- the containment enclosure comprises a shielded tubular casing having a first end portion surrounded by an additional shield and, on the opposite side, a second end closed by a removable cover to allow the introduction into the enclosure of the tubes. guides such that the most radioactive portion of the guide tubes extend into the second end portion of the shielded casing.
- the frame comprises a soleplate surmounted by three support members: two rear support members extend vis-à-vis to support the first end portion of the shielded casing by integral pivots of the shield and a support member front on which the second end portion rests shielded envelope so that the enclosure extends horizontally.
- the chassis also comprises hooking means for attaching a lifting device to lift the entire device and load it on a vehicle moving the device of the reactor building to the storage casemate and vice versa, or in any other place of the site.
- the device undergoes manipulations, including lifts, which make it run the risk of a fall. If such a fall can not pierce the shielded envelope given the maximum height that can be the device in use, a fall could result in deformation of the cover or the shielded envelope in the vicinity of the cover and, therefore, a rupture of the containment seal.
- the size of the device is conditioned by the dimensions of the reactor building passages and also by the internal dimensions of the storage casemates, and also by the usual transport jigs, which is also restrictive for the general design of the device.
- An object of the invention is to provide a means for ensuring the backup of the confinement in case of impact, limiting within the acceptable limits (tolerated) the increase in weight and bulk of the device.
- a device for storing dangerous materials comprising a frame supporting a containment chamber for hazardous materials, the frame comprising a sole surmounted by support members of the enclosure.
- Each support member comprises a first element secured to the frame and a second element which supports the enclosure and which is mounted to be movable relative to the first element in a substantially vertical sliding direction.
- At least one shock absorber is interposed between the two elements to block their relative displacement as long as the force applied to the shock absorber by the elements is at most equal to a predetermined threshold and to plastically deform at. allowing the relative movement of the elements under a force applied to the shock absorber by the elements and greater than the predetermined threshold.
- the shock absorber comprises a partitioned volume delimited by substantially vertical walls to form a honeycomb structure.
- the predetermined threshold is that corresponding to a force that the device can support ensuring the integrity of the confinement.
- the invention is based on the assumption that the device, if it were to fall, would hit the ground by the chassis: the two elements of each absorber tend to get closer to each other and, if the effort approach is greater than the threshold, the two elements will compress between them 1 shock absorber.
- the plastic deformation of the shock absorber will allow the dissipation of a portion of the impact energy, limiting the risk that the residual energy is sufficient to cause deformation of the envelope.
- the shock absorbers with honeycomb structure presents good energy absorption capacities relative to their weight and their bulk.
- FIG. 1 is an elevational view of a device according to the invention
- FIG. 2 is an end view of this device
- FIG. 3 is an enlarged perspective view of zone III of FIG. 1;
- FIG. 4 is an enlarged perspective view of the area IV of FIG.
- the invention is here described in application to the storage of radioactive waste constituted by guide tubes of nuclear reactor control rods.
- other applications are of course possible such as, for example, the storage of toxic chemicals.
- the storage device comprises a frame 1 supporting an enclosure 2 for confining the radioactive waste.
- the enclosure 2 comprises a shielded casing 20, of tubular form, having a first end portion 21 surrounded by an additional shielding 23 and, on the opposite side, a second end portion 22 closed by a removable cover 24 held in position. by two bolts 25.
- Two pivots 26, diametrically opposite one another, extend protruding from the shielding additional 23 and two lifting journals 27, diametrically opposed to each other, projecting from the second end portion 22 of the shielded casing 20.
- the pivots 26 and the lifting pins 27 are arranged in the same median longitudinal plane of the shielded casing 20.
- the internal structure of the shielded casing 20, which comprises means for storing the guide tubes, is not related to the invention and will not be described any more. right here.
- the frame 1 comprises a sole 3 formed of an assembly of beams and surmounted by three support members of the enclosure 2 which are arranged at the vertices of an isosceles triangle whose height is parallel to the central axis of the envelope shielded 20, namely two rear support members 4 to each support one of the pivots 26 and a front support member 5 for supporting the second end portion 22 of the shielded enclosure 20 in an area adjacent to a lower generator of the second end portion 22.
- the shielded enclosure 20 has a substantially horizontal central axis when it rests on the support members 4 and 5.
- Each rear support member 4 comprises a first element 4.1 integral with the frame 1 and a second element 4.2 which supports the enclosure 2 and which is mounted to be movable relative to the first element 4.1 in a substantially vertical sliding direction.
- the second element 4.2 comprises a lower part mounted to slide in an upper part of the first element 4.1 and an upper part comprising an open bearing 4.21 which pivotally receives the pivot 26 of the enclosure 2 and which is closed by a removable lock 4.22.
- the lower part of the first element 4.1 delimits a housing 4.11 whose vertical dimension depends on the relative position of the elements 4.1, 4.2.
- first shock absorber 6.1 and a second shock absorber 6.2 resting on a plate 6.3 itself based on the first shock absorber 6.1.
- the lower part of the second element 4.2 rests on the second shock absorber 6.2.
- the shock absorbers 6.1, 6.2 are thus interposed between the two elements 4.1, 4.2 to block their relative displacement as long as the force applied to each of the shock absorbers by the elements 4.1, 4.2 is at most equal to a predetermined threshold and for to deform plastically by allowing the relative displacement of the elements 4.1, 4.2 when the force applied to the shock absorbers by the elements 4.1, 4.2 is greater than the predetermined threshold.
- the first shock absorber 6.1 is plastically deformable beyond a first stress threshold and the second shock absorber is plastically deformable beyond a second stress threshold lower than the first stress threshold.
- the second shock absorber 6.2 is arranged to absorb a shock resulting from a fall of 13 cm and the first shock absorber 6.1 is arranged to absorb a shock resulting from a fall of 150 cm.
- the housing 4.11 is delimited by an outer wall 4.12 of the first element 4.1 of the support member 4. Said outer wall 4.12 is pierced with an opening 4.13 positioned and of sufficient size to allow the introduction of the second shock absorber 6.2 in the housing 4.11 and the extraction of the second shock absorber 6.2 out of the housing 4.11 (in this case, the second element 4.2 must be relieved of the weight of the enclosure 2 by means of a hoist).
- the opening 4.13 is advantageous because it can happen that the device undergoes a shock causing crushing of the second shock absorber 6.2 but not the first shock absorber 6.1: in this case, the second shock absorber 6.2 can be replaced without having to dismantle the outer wall 4.12.
- first shock absorber 6.1 and the plate 6.3 in the housing 4.11 and their extraction from the housing 4.11 assume the disassembly of the outer wall 4.12 (in this case also, the second element 4.2 must be relieved of the weight of the enclosure 2 by means of a hoist).
- second shock absorber 6.2 in the housing 4.11 it is also possible to introduce the second shock absorber 6.2 in the housing 4.11 and extract it by dismounting the outer wall 4.12.
- Each front support member 5 (shown without its outer walls in FIGS. 2 and 4) comprises a first element 5 integral with the frame 1 and a second element 5.2 which supports the enclosure 2 and which is mounted to be movable relative to the first element 5.1 in a direction of substantially vertical sliding. More precisely here, the second element 5.2 comprises a lower part mounted to slide in an upper part of the first element 5.1 and an upper part on which the second end portion 22 of the armored envelope 20 rests directly. The lower part of the first element 5.1 delimits a housing whose vertical dimension depends on the relative position of elements 5.1, 5.2.
- first shock absorber 16.1 and a second shock absorber 16.2 resting on a plate 16.3 itself resting on the first shock absorber 16.1.
- the lower part of the second element 5.2 rests on the second shock absorber 16.2.
- the shock absorbers 16.1 / 16.2 are thus interposed between the two elements 5.1, 5.2 to block their relative displacement as long as the force applied to each of the shock absorbers by the elements 5.1, 5.2 is at most equal to a predetermined threshold and for to deform plastically by allowing the relative displacement of the elements 5.1, 5.2 when the force applied to the shock absorbers by the elements 5.1, 5.2 is greater than the predetermined threshold.
- the first shock absorber 16.1 is plastically deformable beyond a first stress threshold and the second shock absorber is plastically deformable beyond a second stress threshold lower than the first stress threshold.
- the second shock absorber 16.2 is arranged to absorb a shock resulting from a fall of 13 cm and the first shock absorber 16.1 is arranged to absorb a shock resulting from a fall of 150 cm.
- Each shock absorber 6 * 1, 6.2, 16.1, 16.2 has a partitioned volume defined by walls 7, 17 substantially vertical to form a honeycomb structure here having a honeycomb shape.
- the cells are open at their upper and lower ends.
- the shock absorbers 6.1, 6.2, 16.1, 16.2 are here metal.
- the metal is here an aluminum alloy.
- the walls 7, 17 have a thickness of less than 100 microns. It goes without saying that the choice of material and the choice of the thickness of the walls are dictated by the design constraints (effort to bear, space available for 1 shock absorber ).
- the second shock absorber 6.2, 16.2 has dimensions transverse to the direction of sliding which are smaller than those of the first shock absorber 6.1, 16.1 so that the bearing surfaces are different.
- the purpose of the plate 6.3, 16.3 is to ensure a transfer of the forces exerted by the second shock absorber 6.2, 16.2 on the whole of the upper surface of the first shock absorber 6.1, 16.1.
- the second element 5.2 is therefore connected to the frame 1 by tie rods 9 (cables) which extend in a diametral plane of the chamber 2 to resume lateral forces that would be exerted on the frame 1.
- the tie rods 9 must not oppose the vertical downward movement of the second element 5.2.
- the tie rods 9 are here formed of cables maintained in tension by means not shown.
- the number of support members may be different from three.
- Only a portion of the support members may be equipped with a shock absorber (in the vicinity of where the enclosure is the most fragile for example).
- the support members may be equipped with a different number of shock absorbers.
- the shock absorber may be of other materials than an aluminum alloy and for example steel or composite material.
- the honeycomb structure may have a different shape, for example with quadrilateral cells.
- the first shock absorber and the second shock absorber may be of different or identical constitutions.
- Each tie 9 can be replaced by a telescopic rod in two parts joined by a breakable pin.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Plasma & Fusion (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Vibration Dampers (AREA)
- Buffer Packaging (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1560100A FR3042902B1 (fr) | 2015-10-22 | 2015-10-22 | Dispositif de stockage de materiaux dangereux |
PCT/EP2016/075467 WO2017068165A1 (fr) | 2015-10-22 | 2016-10-21 | Dispositif de stockage de materiaux dangereux |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3365896A1 true EP3365896A1 (fr) | 2018-08-29 |
Family
ID=55948868
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16785164.1A Withdrawn EP3365896A1 (fr) | 2015-10-22 | 2016-10-21 | Dispositif de stockage de materiaux dangereux |
Country Status (6)
Country | Link |
---|---|
US (1) | US20190341160A1 (fr) |
EP (1) | EP3365896A1 (fr) |
JP (1) | JP2019500620A (fr) |
FR (1) | FR3042902B1 (fr) |
RU (1) | RU2018118435A (fr) |
WO (1) | WO2017068165A1 (fr) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2840507A1 (de) * | 1978-09-18 | 1980-03-20 | Kraftwerk Union Ag | Vorrichtung zur montage von stossdaempfern an brennelement-transportbehaeltern |
DE3028424C2 (de) * | 1980-07-26 | 1984-05-30 | Transnuklear Gmbh, 6450 Hanau | Stoßdämpfer |
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 |
JP2006090705A (ja) * | 2004-09-21 | 2006-04-06 | Hitachi Ltd | キャスク用緩衝体 |
JP2007178259A (ja) * | 2005-12-28 | 2007-07-12 | Mitsubishi Heavy Ind Ltd | 金属キャスクの安全装置 |
JP6165028B2 (ja) * | 2013-10-31 | 2017-07-19 | 三菱重工業株式会社 | 放射性物質収納容器支持架台 |
-
2015
- 2015-10-22 FR FR1560100A patent/FR3042902B1/fr active Active
-
2016
- 2016-10-21 US US15/769,763 patent/US20190341160A1/en not_active Abandoned
- 2016-10-21 RU RU2018118435A patent/RU2018118435A/ru not_active Application Discontinuation
- 2016-10-21 EP EP16785164.1A patent/EP3365896A1/fr not_active Withdrawn
- 2016-10-21 WO PCT/EP2016/075467 patent/WO2017068165A1/fr active Application Filing
- 2016-10-21 JP JP2018540215A patent/JP2019500620A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
WO2017068165A1 (fr) | 2017-04-27 |
RU2018118435A3 (fr) | 2019-11-22 |
FR3042902A1 (fr) | 2017-04-28 |
RU2018118435A (ru) | 2019-11-22 |
JP2019500620A (ja) | 2019-01-10 |
US20190341160A1 (en) | 2019-11-07 |
FR3042902B1 (fr) | 2017-12-22 |
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