EP0154770B1 - Structure de stockage de matériaux radioactifs de haute activité utilisant un amiante -ciment dense - Google Patents

Structure de stockage de matériaux radioactifs de haute activité utilisant un amiante -ciment dense Download PDF

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Publication number
EP0154770B1
EP0154770B1 EP85100147A EP85100147A EP0154770B1 EP 0154770 B1 EP0154770 B1 EP 0154770B1 EP 85100147 A EP85100147 A EP 85100147A EP 85100147 A EP85100147 A EP 85100147A EP 0154770 B1 EP0154770 B1 EP 0154770B1
Authority
EP
European Patent Office
Prior art keywords
columns
cement
sleeves
storage
asbestos
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.)
Expired
Application number
EP85100147A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0154770A2 (fr
EP0154770A3 (en
Inventor
Gérard Mahut
René Pierlas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Societe Generale pour les Techniques Nouvelles SA SGN
Everite SA
Original Assignee
Generale Pour Les Techniques Nouvelles Sgn SA Ste
Societe Generale pour les Techniques Nouvelles SA SGN
Everite SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Generale Pour Les Techniques Nouvelles Sgn SA Ste, Societe Generale pour les Techniques Nouvelles SA SGN, Everite SA filed Critical Generale Pour Les Techniques Nouvelles Sgn SA Ste
Publication of EP0154770A2 publication Critical patent/EP0154770A2/fr
Publication of EP0154770A3 publication Critical patent/EP0154770A3/fr
Application granted granted Critical
Publication of EP0154770B1 publication Critical patent/EP0154770B1/fr
Expired legal-status Critical Current

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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
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/28—Treating solids
    • G21F9/34—Disposal of solid waste
    • G21F9/36—Disposal of solid waste by packaging; by baling

Definitions

  • the present invention relates to a structure for the storage of high-level radioactive materials by using a dense asbestos-cement.
  • the effluents will be brought, if they are not already so, in a solid form and they will be coated in a suitable solid matrix capable of withstanding the mechanical, physical or chemical aggressions coming from the radioactive materials themselves. - same or from the outside environment.
  • the effluents dispersed in said solid matrix will be “conditioned” so as to be able to be preserved for more or less long periods which will be necessary for the evolution of the radioactive material, then for the proper storage of said material.
  • dense asbestos cement that is to say by definition in the present application an asbestos cement with a density greater than 1.75 g / cm 3
  • dense asbestos cement is the material of choice for the construction of tubes and connection sleeves used for the storage of radioactive products.
  • the asbestos-cement chosen is a material comprising a high dosage of cement (of the order of 1500 kg / m 3 ), a fine particle size due to the mixture of approximately 85% of cement having approximately 3000 to 4000 cm 2 / g BLAINE specific surface area and approximately 15% asbestos at 20,000 cm 2 / g and a density greater than approximately 1.75 g / cm 3 obtained by applying a strong compression at the head of the forming machine bonding and densification of successive layers of material.
  • the values given above are average values.
  • a container comprising asbestos cement is claimed in the initial application EP-A-37 312.
  • Patent DE-A-1,136,261 describes the use of a refractory binder material of complex composition based on calcium sulphate mixed with asbestos, but does not describe the use of a dense asbestos-cement as in the present application.
  • FR-A-1 347 402 describes the use of a rem pleating which consists of fibers impregnated with an adhesive and then compressed in the space between two containers; the material used in patent FR-A-1 347 402 is therefore not dense asbestos-cement as in the present application and does not play the same role with respect to radiation.
  • the storage structure according to the present invention consists of pipes of standard length, very thick, made of dense asbestos-cement, said pipes being arranged vertically next to each other; between said lines of pipes circulates the cooling air, said pipes being connected to each other using sleeves made of dense asbestos-cement.
  • vitrified waste consists of cylindrical glass blocks, from 400 to 500 mm in outside diameter and from 1500 to 2000 mm in total height. Their unit heat release can reach a few kilowatts at the start of their storage period.
  • the dense asbestos-cement tubes according to the invention are therefore used for carrying out intermediate storage of high activity effluents, said tubes serving to fractionate the mass of the products to be stored and to guide the cooling air around said products.
  • the entire repository will be in the form of a buried building, preferably of vertical cylindrical shape, comprising a bundle of dense asbestos-cement tubes, of triangular or square mesh.
  • the design is based on the use of standard length pipes in pressure class, very thick, the pipes being connected to each other using dense asbestos-cement sleeves. These sleeves will also serve as spacers, at different levels, with a shift from one tube to another, so as to constitute a rigid and compact structure, resistant to the forces and stresses resulting both from the load, the temperature and the seismic constraints.
  • the sleeves of two neighboring tubes will be declared by a third of the length, so as to provide suitable bracing.
  • the sleeves of two adjacent tubes will be offset by half a length of tube.
  • the space between the tubes will serve, at least for part, for the descent of the fresh air along the wells, this same cooling air then rising inside the tubes, in the annular space left free between the glass containers and the inner wall of dense asbestos-cement tubes.
  • the heating of the air during the descent is sufficient to allow the dew point temperature to be exceeded at the start of the licking of the containers by the air, thus avoiding any risk of corrosion of stainless steel glass containers.
  • the speed of ascent of the air of the order of 2 m / s, is substantially the same as that chosen for the descent between the tubes.
  • the hot air will come out at a temperature of around 200 ° C at the top of the storage.
  • An air mattress formed by the incoming fresh air protects the concrete parts on the upper surface of the storage and on the outer shell.
  • a square mesh storage also makes it possible to obtain very good results from the point of view of the compactness of the storage.
  • the core glass temperatures remain below 400 ° C., therefore clearly below the critical recrystallization temperature.
  • their highest wall temperature remains below 200 ° C, which is significantly below the permissible limits.
  • Guiding the containers inside the asbestos-cement tubes can also be carried out with dense asbestos-cement elements (plate elements fixed inside the tubes for example), without this being a compulsory solution.
  • Other variants are possible such as, for example, containers provided with metal guide fins, or even by fixing metallic parts, made of noble metal, adapted and fixed on the pipes or on the glass containers.
  • the preferred cylindrical shape for storage makes it possible, if necessary, to partition it into sectors, and to circulate the arrival of cold air from the periphery towards the center.
  • Such a type of storage can be just as suitable for transient cooling of the glasses, for a few years after their production, as for longer cooling, while waiting for their final storage in a geological structure.
  • Such a fractionation structure can also be adapted to the storage of dissolving shells or fines after solidification and placing in a container.
  • the storage silo consists of a closed concrete enclosure 2 in which are arranged a series of columns 3, 3a, 3b made of dense asbestos-cement.
  • Each of these columns consists of a stack of superimposed unit tubes 4, 4a, 4b, 4c.
  • the junction 5 between two tubes is shown in detail in FIG. 5.
  • the tube 4a rests end to end on the lower tube 4b by means of a seal 6 held in the circular groove 7 of the connection sleeve 8.
  • connection sleeves are offset by a height corresponding to a half-height of unitary tubes on two adjacent columns.
  • a sleeve is only in contact with the four adjacent columns and never with another sleeve. Consequently, the sleeves also act as a spacer between adjacent columns.
  • each column is closed by a plug 11, 11a, 11b housed in the corresponding openings of the slab 12 of reinforced concrete.
  • the cap plus slab assembly provides protection between the intervention zone 13 located above the silo and the interior of the enclosure 2.
  • each column rests on a base 14 constituted by a double row 15 and 16 of adjacent support sleeves 15a, 15b and 16a, 16b whose average diameter is equal to £ times the square mesh of the network made up of all the columns.
  • the bottom 17 of the columns has a stool 18 formed by a blank made of dense asbestos-cement.
  • This bottom can be fitted with a container fall-arresting device such as, for example that described in French patent application FR-A-2 500 098 filed on February 13, 1981 and published on August 20, 82.
  • the storage containers 19 are stacked on top of each other inside the columns, their centering being able to be achieved by guide fins not shown in the figures and arranged radially inside the columns.
  • the fresh air is distributed at the upper part of the enclosure thus protecting the upper concrete slab and penetrates into the isthmus 20, 21 formed between adjacent columns or between the columns and the side walls of the enclosure by means of inlet tubes 22 asbestos-cement.
  • These tubes 22 are held by two plates 23 and 24 made of asbestos-cement, these plates resting on the corresponding sleeves 25, 25a, 25b of the neighboring columns and delimiting an enclosure 26.
  • the hot air opens into the enclosure 26 through the lights 28, 28a formed in the part of the columns passing through the enclosure 26. These lights can be more or less obscured by an appropriate adjustment device not shown, for example by a cover. Horizon sliding in the pierced part of the column and actuated in the intervention zone 13 by means of a rod sealingly passing through the plug.
  • the columns are arranged in a square mesh network, the two axes D 1 and D 2 are respectively parallel to the walls P 1 P ', and P 2 P' 2 of the pregnant.
  • the network is made up of two sets of columns.
  • a first assembly 29 is constituted by the columns 30, 30a, 30b situated in contact with the walls P 1 P ' 1 P 2 P' 2 of the enclosure; the columns of this set are preferably empty (therefore do not contain radioactive materials) and they are swept by a downward flow of fresh air; the columns of this set act as a spacer between the walls of the enclosure and the columns of the second set.
  • a second set 31 is made up of all the columns which are not in contact with the walls P. The columns of the second set 31 of columns contain the containers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Processing Of Solid Wastes (AREA)
EP85100147A 1980-03-27 1981-03-20 Structure de stockage de matériaux radioactifs de haute activité utilisant un amiante -ciment dense Expired EP0154770B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8006883 1980-03-27
FR8006883A FR2479542B1 (fr) 1980-03-27 1980-03-27 Nouveaux materiaux barrieres utilisables pour le conditionnement des effluents radio-actifs

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP81400429.7 Division 1981-03-20

Publications (3)

Publication Number Publication Date
EP0154770A2 EP0154770A2 (fr) 1985-09-18
EP0154770A3 EP0154770A3 (en) 1985-12-04
EP0154770B1 true EP0154770B1 (fr) 1989-02-08

Family

ID=9240199

Family Applications (2)

Application Number Title Priority Date Filing Date
EP85100147A Expired EP0154770B1 (fr) 1980-03-27 1981-03-20 Structure de stockage de matériaux radioactifs de haute activité utilisant un amiante -ciment dense
EP81400429A Expired EP0037312B1 (fr) 1980-03-27 1981-03-20 Conteneur pour le conditionnement des effluents radioactifs

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP81400429A Expired EP0037312B1 (fr) 1980-03-27 1981-03-20 Conteneur pour le conditionnement des effluents radioactifs

Country Status (4)

Country Link
EP (2) EP0154770B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS5716400A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3175446D1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2479542B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2518066A1 (fr) * 1981-12-11 1983-06-17 Caoutchouc Manuf Plastique Dispositif de protection anti-chocs des conteneurs fragiles
FR2526574A1 (fr) * 1982-05-05 1983-11-10 Commissariat Energie Atomique Procede d'evacuation de dechets radioactifs et installation geologique pour l'evacuation de ces dechets
JPS5945599U (ja) * 1982-09-20 1984-03-26 株式会社明電舎 貯蔵庫のラツク
JPS5992900U (ja) * 1982-12-15 1984-06-23 石川島播磨重工業株式会社 放射性廃液固化パツケ−ジの冷却保管装置
DE3322770C2 (de) * 1983-06-24 1985-10-03 Deutsche Gesellschaft für Wiederaufarbeitung von Kernbrennstoffen mbH, 3000 Hannover Vorrichtung zur Handhabung und zum Schutz von Lagergebinden für radioaktive Stoffe
HU191255B (en) * 1984-03-05 1987-01-28 Eroemue- Es Halozattervezoe Vallalat,Hu Container for transporting radioactive matters
JPH0639360Y2 (ja) * 1984-10-31 1994-10-12 株式会社竹中工務店 放射性物質貯蔵施設の貯蔵ピット
JPS61158571A (ja) * 1984-12-28 1986-07-18 株式会社竹中工務店 高レベル放射性物質貯蔵施設
JPS61158570A (ja) * 1984-12-28 1986-07-18 株式会社竹中工務店 高レベル放射性物質貯蔵施設
JPS61158572A (ja) * 1984-12-28 1986-07-18 株式会社竹中工務店 高レベル放射性物質貯蔵施設
EP0390379B1 (en) * 1989-03-31 1995-02-01 Westinghouse Electric Corporation Module for storage of nuclear waste packages
AU6672594A (en) * 1993-10-05 1995-05-01 Roger Pincket Method and jacket for encapsulation of waste
RU2137233C1 (ru) * 1998-01-19 1999-09-10 Вертман Александр Абрамович Капсула для захоронения радиоактивных отходов
FR2807867B1 (fr) * 2000-04-13 2003-11-07 Francois Kerserho Nouveau type d'enduit anti-corrosion, pour proteger a long terme les conteneurs et materiels, traitant des dechets nucleaires, eventuellement radio-actifs

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1136261B (de) * 1959-07-01 1962-09-06 Paul Jolly Verfahren zur Herstellung von gebundenes Anhydritpulver aufweisenden Platten, Steinen und Stampfmassen mit einer hohen Widerstandsfestigkeit gegen radioaktive Strahlen und Hitze
FR1347402A (fr) * 1963-01-23 1963-12-27 Lemer & Cie Améliorations apportées aux containers blindés et aux emballages destinés au transport des radioéléments
JPS5321480A (en) * 1976-08-12 1978-02-27 Amada Co Ltd Shearing machine
JPS53148699A (en) * 1977-05-30 1978-12-25 Japan Atom Energy Res Inst Treatment and disposal container of radioactive waste and industrial waste
DE2730729A1 (de) * 1977-07-07 1979-01-25 Nukem Gmbh Vorrichtung zum lagern bestrahlter bzw. abgebrannter brennelemente aus hochtemperatur-kernreaktoren
DE2909549A1 (de) * 1979-03-10 1980-09-11 Hochtemperatur Reaktorbau Gmbh Brennelementelager

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Encyclopédie Larousse, p. 609: Amiante Ciment *

Also Published As

Publication number Publication date
DE3175446D1 (en) 1986-11-13
FR2479542A1 (fr) 1981-10-02
EP0037312A1 (fr) 1981-10-07
FR2479542B1 (fr) 1987-08-07
EP0154770A2 (fr) 1985-09-18
JPS5716400A (en) 1982-01-27
EP0037312B1 (fr) 1986-10-08
EP0154770A3 (en) 1985-12-04
JPH0149920B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1989-10-26

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