FR2467468A1 - Transport container esp. for irradiated fuel - has heat shielding and protective casing with cooling air passages between - Google Patents
Transport container esp. for irradiated fuel - has heat shielding and protective casing with cooling air passages between Download PDFInfo
- Publication number
- FR2467468A1 FR2467468A1 FR8021719A FR8021719A FR2467468A1 FR 2467468 A1 FR2467468 A1 FR 2467468A1 FR 8021719 A FR8021719 A FR 8021719A FR 8021719 A FR8021719 A FR 8021719A FR 2467468 A1 FR2467468 A1 FR 2467468A1
- Authority
- FR
- France
- Prior art keywords
- container
- castle
- envelope
- cooling air
- transport container
- 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
- 238000001816 cooling Methods 0.000 title abstract description 8
- 239000000446 fuel Substances 0.000 title description 2
- 230000001681 protective effect Effects 0.000 title 1
- 239000000463 material Substances 0.000 claims abstract description 6
- 239000003758 nuclear fuel Substances 0.000 claims abstract 3
- 239000003973 paint Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 2
- 239000002915 spent fuel radioactive waste Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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
- G21F5/10—Heat-removal systems, e.g. using circulating fluid or cooling fins
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Details Of Rigid Or Semi-Rigid Containers (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
Description
La présente invention concerne des châteaux pour le transport de matière, en particulier mais pas exclusivement, de combustible nucléaire irradié. The present invention relates to castles for the transport of material, in particular but not exclusively, of spent nuclear fuel.
Le combustible nucléaire irradié -dégage de la chaleur, de sorte qu'il est souhaitable qu'un château de transport soit capable de dissiper cette chaleur, Etant donné que le château peut être exposé à la chaleur dégagée par une source externe telle qu'un incendie, il est également souhaitable que le château interdise la transmission de la chaleur dégagée par la source externe au combustible irradié. De même, le château doit être capable de supporter des chocs. Used nuclear fuel releases heat, so it is desirable that a transport tower be able to dissipate this heat, Since the store can be exposed to heat given off by an external source such as fire, it is also desirable that the castle prohibits the transmission of the heat given off by the external source to the spent fuel. Similarly, the castle must be able to withstand shocks.
La présente invention a pour objet un château qui tend à satisfaire à ces conditions contradictoires. The present invention relates to a castle which tends to satisfy these contradictory conditions.
Selon l'invention, un château destiné à transporter la matière c-omporte un conteneur pour la matière et une enveloppe entourant le conteneur, un passage destiné à la circulation de l'air étant défini entre le conteneur et l'enveloppe. According to the invention, a castle intended for transporting the material has a container for the material and an envelope surrounding the container, a passage intended for the circulation of air being defined between the container and the envelope.
Le conteneur présente de préférence des ailettes. The container preferably has fins.
Un tel château a l'avantage que la chaleur engendrée à l'intérieur du conteneur tend à être dissipée par les ailettes et par la circulation d'air par convection dans le passage, tandis que la chaleur de la source externe tend à être empêchée par l'enveloppe d'atteindre le conteneur.The advantage of such a castle is that the heat generated inside the container tends to be dissipated by the fins and by the circulation of air by convection in the passage, while the heat from the external source tends to be prevented by the envelope to reach the container.
Avantageusement, l'enveloppe est en métal revêtu d'une peinture à grand pouvoir d'échange calorifique. Advantageously, the envelope is made of metal coated with a paint with great heat exchange power.
L'invention sera décrite plus en détail en regard des dessins annexés à titre d'exemples nullement limitatifs et sur lesquels
la figure 1 est une vue en perspective, en partie en arrachement, d'un château rectangulaire
la figure 2 est une vue partielle en perspective d'un château cylindrique
la figure 3 est une vue de câté partielle du château de la figure 2 ; et
la figure 4 est une coupe transversale du château cylindrique des figures 2 et 3 présentant un autre agencement des tourillons.The invention will be described in more detail with reference to the accompanying drawings by way of non-limiting examples and in which
Figure 1 is a perspective view, partially broken away, of a rectangular castle
Figure 2 is a partial perspective view of a cylindrical castle
Figure 3 is a partial side view of the castle of Figure 2; and
Figure 4 is a cross section of the cylindrical castle of Figures 2 and 3 showing another arrangement of the pins.
En se référant tout d'abord à la figure 1, on voit qu'elle représente un château comportant un conteneur, désigné d'une façon générale par 1, qui est destiné à du combustible nucléaire irradié. Le conteneur est équipé d'ailettes 2 sur ses côtés. Une enveloppe 3 entoure les côtés du conteneur 1 en laissant un intervalle entre les ailettes 2 et ladite enveloppe 3. Cette dernière est fixée au conteneur 1 par des points d'attache 4 qui peuvent être constitués par des vis et des écrous. L'enveloppe 3 présente des trous 6 pour des tourillons 7 (dont un seul est représenté), de façon à pouvoir déplacer le château. Le conteneur 1 présente un couvercle supérieur 9 qui peut comporter un limiteur de choc. Referring first to FIG. 1, it can be seen that it represents a castle comprising a container, generally designated by 1, which is intended for used nuclear fuel. The container is fitted with fins 2 on its sides. An envelope 3 surrounds the sides of the container 1 leaving a gap between the fins 2 and said envelope 3. The latter is fixed to the container 1 by attachment points 4 which may be constituted by screws and nuts. The envelope 3 has holes 6 for pins 7 (only one of which is shown), so that the castle can be moved. The container 1 has an upper cover 9 which may include a shock limiter.
La base du conteneur 1 se prolonge au-dessous de 1 'enveloppe de de manière à laisser un intervalle 10 autour de sa base afin de permettre l'entrée de l'air de refroidissement 11 dans un passage compris entre le conteneur et l'enveloppe.The base of the container 1 extends below the envelope so as to leave a gap 10 around its base in order to allow the entry of the cooling air 11 into a passage between the container and the envelope .
L'enveloppe 3 peut être revêtue d'une peinture 12 à grand pouvoir d'échange calorifique (dont une partie seulement est représentée).The envelope 3 can be coated with a paint 12 with a high heat exchange power (only part of which is shown).
Au cours de l'utilisation du château, la chaleur dégagée par le contenu du conteneur 1 est dissipée par convection, étant donné qu'il se produit une circulation d'air 11 dans l'intervalle 10 entre le conteneur et l'enveloppe autour des ailettes 2 et vers l'extérieur au sommet du château. During the use of the castle, the heat released by the contents of the container 1 is dissipated by convection, since there is an air circulation 11 in the interval 10 between the container and the envelope around the fins 2 and outwards at the top of the castle.
Les ailettes de refroidissement 2 facilitent la transmission de la chaleur du conteneur 1 à l'air en circulation. L'enveloppe 3 est configurée de façon à entraver aussi peu que possible le refroidissement par convection, par exemple grâce à la configuration aérodynamique de ses bords avant et arrière.The cooling fins 2 facilitate the transmission of heat from the container 1 to the circulating air. The envelope 3 is configured so as to hinder convection cooling as little as possible, for example by virtue of the aerodynamic configuration of its front and rear edges.
Si le château est exposé à une chaleur dégagée par une source externe telle qu'un incendie, l'enveloppe 3 intercepte la plus grande partie de la chaleur rayonnant des flammes carXbien que sa température augmente, elle transmet la chaleur par rayonnement à la surface du château à une température effective très inférieure à celle à laquelle cette surface serait soumise en l'absence de l'enveloppe. Les flammes ne peuvent pas pénétrer dans l'espace compris entre les ailettes qui sinon, seraient chauffées effectivement par rayonnement. L'enveloppe 3 atténue aussi le chauffage par convection, du fait que les flammes sont empêchées de péné trer dans la région d'écoulement limité, de sorte que les gaz sont rapidement refroidis par transmission de chaleur au château. If the castle is exposed to heat given off by an external source such as a fire, the envelope 3 intercepts most of the heat radiating from the flames because although its temperature increases, it transmits the heat by radiation to the surface of the castle at an effective temperature much lower than that to which this surface would be subjected in the absence of the envelope. Flames cannot penetrate into the space between the fins which would otherwise be effectively heated by radiation. The casing 3 also attenuates convection heating, since the flames are prevented from entering the limited flow region, so that the gases are rapidly cooled by heat transmission to the castle.
On va se référer maintenant aux figures 2, 3 et 4 qui représentent un château cylindrique et sur lesquelles les mêmes numéros de référence que sur la figure 1 sont utilisés pour désigner des pièces analogues. Un conteneur destiné au combustible irradié est désigné par 21 et le conteneur est équipé d'ailettes 22 autour de sa périphérie. Une enveloppe 23 (qui n'est représentée qu'en partie sur la figure 3) est disposée autour de la périphérie du conteneur 21 en laissant un intervalle entre les ailettes 22 et l'enveloppe 23. Des limiteurs de choc 25 sont disposés à l'une des extrémités du château ou aux deux (seule une extrémité étant représentée). We will now refer to Figures 2, 3 and 4 which represent a cylindrical castle and on which the same reference numbers as in Figure 1 are used to designate similar parts. A container for used fuel is designated by 21 and the container is fitted with fins 22 around its periphery. An envelope 23 (which is only partially shown in Figure 3) is arranged around the periphery of the container 21 leaving a gap between the fins 22 and the envelope 23. Shock limiters 25 are arranged at the 'one or both ends of the castle (only one end being shown).
Une fente longitudinale 26 est ménagée à la base de l'enveloppe 23 pour permettre l'entrée de l'air de refroidissement et une fente longitudinale 27 est ménagée au sommet de ladite enveloppe 23 pour laisser sortir l'air chaud. A longitudinal slot 26 is formed at the base of the envelope 23 to allow the entry of cooling air and a longitudinal slot 27 is formed at the top of said envelope 23 to let out the hot air.
La circulation de l'air est indiquée par des flèches 29.The air circulation is indicated by arrows 29.
La figure 4 illustre en particulier deux variantes de fixation du tourillon 7 > à gauche et à droite respective- ment de la figure. A gauche se trouve la forme de montage du tourillon déjà décrite et à droite une forme dans laquelle l'enveloppe et les ailettes sont découpées pour loger le tourillon. Egalement, l'enveloppe est beaucoup plus près des ailettes à droite et en fait, ne laisse qu'un très petit espace entre elles bien que cet espace ne soit pas visible sur la figure. FIG. 4 illustrates in particular two variants for fixing the pin 7> to the left and to the right respectively of the figure. On the left is the mounting form of the journal already described and on the right a form in which the casing and the fins are cut to accommodate the journal. Also, the envelope is much closer to the fins on the right and in fact, leaves only a very small space between them although this space is not visible in the figure.
En service, le château cylindrique remplit la même fonction que le château rectangulaire en cas d'incendie. In service, the cylindrical castle fulfills the same function as the rectangular castle in the event of fire.
Les flammes entrent en contact avec la surface du conteneur et les ailettes dans la région des fentes supérieure et inférieure qui, par conséquent, ont une dimension minimale tout en permettant un refroidissement normal suffisant par convection. La région où se produit un contact direct est petite par rapport à toute la surface.The flames come into contact with the surface of the container and the fins in the region of the upper and lower slots which, therefore, have a minimum dimension while allowing sufficient normal cooling by convection. The area where direct contact occurs is small compared to the entire surface.
Dans certaines formes de réalisation de l'invention, il est possible de réduire les dimensions de l'enveloppe, par exemple en ne disposant que sur la région équipée d'ailettes du château rectangulaire quatre plaques qui ne sont pas en contact. In certain embodiments of the invention, it is possible to reduce the dimensions of the envelope, for example by having only on the region equipped with fins of the rectangular castle four plates which are not in contact.
I1 convient de noter que la température des surfaces accessibles est réduite pendant l'utilisation normale du château, que le chauffage par les rayons solaires est atténué, que la contamination extérieure du château est réduite du fait que l'enveloppe peut être ajustée après que le conteneur a quitté les zones contaminées, que l'enveloppe contribue à la résistance mécanique et à la protection du château et que le choix d'une peinture pour revêtir l'enveloppe est plus grand, étant donné que la décontamination de cette dernière ne pose pas de problème. It should be noted that the temperature of the accessible surfaces is reduced during normal use of the castle, that the heating by solar rays is attenuated, that the external contamination of the castle is reduced because the envelope can be adjusted after the container has left the contaminated areas, that the envelope contributes to the mechanical strength and protection of the castle and that the choice of a paint to coat the envelope is greater, since the decontamination of the latter does not pose problem.
D'après la description ci-dessus, il ressort que l'invention se rapporte à un château perfectionné. From the above description, it appears that the invention relates to an improved castle.
Il va de soi que de nombreuses modifications peuvent être apportées au château décrit et représenté sans sortir du cadre de l'invention. It goes without saying that many modifications can be made to the castle described and shown without departing from the scope of the invention.
Claims (4)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7935299 | 1979-10-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2467468A1 true FR2467468A1 (en) | 1981-04-17 |
| FR2467468B1 FR2467468B1 (en) | 1987-09-11 |
Family
ID=10508425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8021719A Expired FR2467468B1 (en) | 1979-10-11 | 1980-10-10 | TRANSPORT CASTLE, ESPECIALLY IRRADIATED NUCLEAR FUEL |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS5661695A (en) |
| DE (1) | DE3037856A1 (en) |
| FR (1) | FR2467468B1 (en) |
| IT (1) | IT1130523B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2973925A1 (en) * | 2011-04-07 | 2012-10-12 | Tn Int | Package for transporting e.g. mixed oxide fuels, has air inlet and outlet extended along longitudinal axis of package to circulate air from inlet to outlet through air circulation channel by natural convection |
| WO2016151094A1 (en) | 2015-03-25 | 2016-09-29 | Tn International | Device for supporting packaging for transporting/storing radioactive materials, including a shroud for guiding air for cooling the packaging by natural convection |
| WO2019089421A1 (en) | 2017-10-30 | 2019-05-09 | Nac International Inc. | Ventilated metal storage overpack (vmso) |
| WO2020193901A1 (en) * | 2019-03-28 | 2020-10-01 | Tn International | Assembly comprising a packaging for the storage of radioactive materials and support system thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5006241B2 (en) * | 2008-03-31 | 2012-08-22 | 日本原子力発電株式会社 | Spent fuel containment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1257299B (en) * | 1961-10-03 | 1967-12-28 | Licentia Gmbh | Transport container for radioactive materials |
| DE1514623A1 (en) * | 1965-11-22 | 1970-03-05 | Siemens Ag | Transport container for spent fuel elements from nuclear reactors |
| DE1955113A1 (en) * | 1969-11-03 | 1971-05-13 | Kernforschung Gmbh Ges Fuer | Transport container for irradiated fuel elements from nuclear reactors |
| DE2300620A1 (en) * | 1973-01-08 | 1974-07-11 | Transnuklear Gmbh | Shielded transport flask - for plutonium nitrate or uranyl nitrate solutions |
-
1980
- 1980-09-26 JP JP13418080A patent/JPS5661695A/en active Pending
- 1980-10-02 IT IT68520/80A patent/IT1130523B/en active
- 1980-10-07 DE DE19803037856 patent/DE3037856A1/en not_active Withdrawn
- 1980-10-10 FR FR8021719A patent/FR2467468B1/en not_active Expired
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1257299B (en) * | 1961-10-03 | 1967-12-28 | Licentia Gmbh | Transport container for radioactive materials |
| DE1514623A1 (en) * | 1965-11-22 | 1970-03-05 | Siemens Ag | Transport container for spent fuel elements from nuclear reactors |
| DE1955113A1 (en) * | 1969-11-03 | 1971-05-13 | Kernforschung Gmbh Ges Fuer | Transport container for irradiated fuel elements from nuclear reactors |
| DE2300620A1 (en) * | 1973-01-08 | 1974-07-11 | Transnuklear Gmbh | Shielded transport flask - for plutonium nitrate or uranyl nitrate solutions |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2973925A1 (en) * | 2011-04-07 | 2012-10-12 | Tn Int | Package for transporting e.g. mixed oxide fuels, has air inlet and outlet extended along longitudinal axis of package to circulate air from inlet to outlet through air circulation channel by natural convection |
| WO2016151094A1 (en) | 2015-03-25 | 2016-09-29 | Tn International | Device for supporting packaging for transporting/storing radioactive materials, including a shroud for guiding air for cooling the packaging by natural convection |
| FR3034246A1 (en) * | 2015-03-25 | 2016-09-30 | Tn Int | DEVICE FOR SUPPORTING A TRANSPORT / STORAGE PACKAGING OF RADIOACTIVE MATERIALS, COMPRISING A COOLING AIR GUIDE DENING OF THE PACKAGING BY NATURAL CONVECTION |
| US10128011B2 (en) | 2015-03-25 | 2018-11-13 | Tn International | Device for supporting packaging for transporting/storing radioactive materials, including a shroud for guiding air for cooling the packaging by natural convection |
| CN109874298A (en) * | 2015-03-25 | 2019-06-11 | Tn国际公司 | Equipment to support the encapsulant for transported/stored radioactive material, including to guide for by free convection come the cover of the air of cooling package object |
| CN109874298B (en) * | 2015-03-25 | 2023-01-17 | Tn国际公司 | Device for supporting an enclosure for transporting/storing radioactive material, comprising a cover for guiding air for cooling the enclosure by natural convection |
| WO2019089421A1 (en) | 2017-10-30 | 2019-05-09 | Nac International Inc. | Ventilated metal storage overpack (vmso) |
| EP3704716A4 (en) * | 2017-10-30 | 2021-08-04 | NAC International Inc. | Ventilated metal storage overpack (vmso) |
| US11676736B2 (en) | 2017-10-30 | 2023-06-13 | Nac International Inc. | Ventilated metal storage overpack (VMSO) |
| WO2020193901A1 (en) * | 2019-03-28 | 2020-10-01 | Tn International | Assembly comprising a packaging for the storage of radioactive materials and support system thereof |
| FR3094549A1 (en) * | 2019-03-28 | 2020-10-02 | Tn International | SET INCLUDING A PACKAGING FOR THE STORAGE OF RADIOACTIVE MATERIALS, AND ITS SUPPORT SYSTEM |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3037856A1 (en) | 1981-04-23 |
| IT8068520A0 (en) | 1980-10-02 |
| IT1130523B (en) | 1986-06-18 |
| JPS5661695A (en) | 1981-05-27 |
| FR2467468B1 (en) | 1987-09-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| CD | Change of name or company name | ||
| ST | Notification of lapse |