EP0022031B1 - Bassins à grande contenance pour le stockage de produits radioactifs - Google Patents

Bassins à grande contenance pour le stockage de produits radioactifs Download PDF

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Publication number
EP0022031B1
EP0022031B1 EP80400980A EP80400980A EP0022031B1 EP 0022031 B1 EP0022031 B1 EP 0022031B1 EP 80400980 A EP80400980 A EP 80400980A EP 80400980 A EP80400980 A EP 80400980A EP 0022031 B1 EP0022031 B1 EP 0022031B1
Authority
EP
European Patent Office
Prior art keywords
basins
reservoirs
basin
water
stainless steel
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
EP80400980A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0022031A1 (fr
Inventor
René Guilloteau
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
Original Assignee
Generale Pour Les Techniques Nouvelles Sgn SA Ste
Societe Generale pour les Techniques Nouvelles SA SGN
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 filed Critical Generale Pour Les Techniques Nouvelles Sgn SA Ste
Priority to AT80400980T priority Critical patent/ATE3599T1/de
Publication of EP0022031A1 publication Critical patent/EP0022031A1/fr
Application granted granted Critical
Publication of EP0022031B1 publication Critical patent/EP0022031B1/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

Definitions

  • the present invention relates to large-capacity basins for the storage of radioactive products.
  • the radioactive waste is generally stored, at the exit of the piles, in basins filled with water which one compared to swimming pools.
  • the basins currently used have the shape of a parallelepiped; seen in plan this parallelepiped has the shape of a rectangle whose width is limited by the normal range of the handling bridges which must put in place and remove the "baskets" of radioactive material and whose length is limited by problems of expansion materials (concrete) in which the basins are made. Consequently, in the current state of the art, there is a dimension of the basins which cannot be exceeded.
  • the current basins all have walls made up of a thick concrete veil lined, on its internal face, with a stainless steel wall.
  • This stainless steel wall is produced on site using flat sheets which are welded to each other edge to edge and on the other fixed in vertical uprights (wooden or metallic) integral with the web of concrete.
  • This arrangement of the stainless steel inner lining has a number of advantages, but it also has notable drawbacks which will increase as the dimensions of the basins increase, due to differences in expansion between the concrete and the stainless steel. It therefore appeared desirable, in particular for larger basins, to use a novel device for coating the interior walls of the concrete of the basins by means of stainless steel elements. This is another object of the present invention.
  • the present invention therefore relates to basins for storage of radioactive products in water, characterized in that they have a toric shape and that the free central part of these basins is surmounted by a chimney allowing proper ventilation of the basins and exchangers used.
  • This toric shape is most generally circular, the diameter of the inner wall of the torus being at least 30 m and the diameter of the outer wall up to 120 m being understood that the distance between the inner wall and the outer wall will generally be compatible with the spans of handling bridges.
  • the reasonable dimensions seem, under current technological conditions, to be: diameter of the interior wall 46 m, diameter of the exterior wall 90 m.
  • the depth of these basins can be arbitrary; in general, the same depth will be used as that of the current basins, that is to say of the order of 9 m.
  • basins of this type are within the reach of those skilled in the art; the walls of the basin are of reinforced concrete of sufficient thickness to ensure on the one hand biological protection and on the other hand resistance to deformations and earthquakes; these walls could for example be 1.5 m thick.
  • the basins are preferably of the underground type, that is to say that they are mounted on studs, the upper part of which is provided with flexible connection devices which allow on the one hand the expansion of the concrete and of on the other hand, a first resistance to horizontal earthquakes.
  • the inlet and outlet structures of the basins are advantageously constituted by "hop jumps" constructed so as to be separated in structure from the basins and connected to the lateral ground.
  • the internal faces of the basins are coated with a continuous coating of stainless steel by means of a vertical corrugated wall fixed to the upper part of the walls of the basins and by means of a plate bottom, the connection between said vertical corrugated wall and said bottom plate being produced by means of an expansion wave, also made of stainless steel, welded to said corrugated wall and to said bottom plate.
  • the bottom plate is obviously made by welding elementary stainless steel plates; this plate is welded around its edge to an edge of a stainless steel expansion wave.
  • the vertical corrugated wall is formed by the in situ welding of unitary elements of suitable shape; these elements have a shape such that the vertical weld line, between two adjacent elements, is at a certain distance from the interior face of the concrete wall when the adjacent unit elements are pressed against said internal face.
  • unitary elements of suitable shape; these elements have a shape such that the vertical weld line, between two adjacent elements, is at a certain distance from the interior face of the concrete wall when the adjacent unit elements are pressed against said internal face.
  • An example of usable unit elements is constituted by "boards".
  • the lower part of the vertical corrugated wall is welded to a stainless steel expansion wave; the purpose of this expansion wave is to deform when, on the one hand, the corrugated wall and, on the other hand, the bottom plate expand or retract under the influence of a change in the temperature of the water.
  • the upper part of the vertical corrugated wall is fixed, for example by means of a flap, to the upper part of the concrete wall.
  • This internal coating system for basins has significant advantages over the coating techniques currently used in basins.
  • the toric arrangement of the basins according to the invention gives rise to certain new possibilities with regard to the additional devices necessary for the operation of said basins. It is essentially a matter of using the free space located in the center of the torus as rationally as possible and of placing there the heat and / or ion exchangers and the ventilation elements.
  • the ventilation which contributes to the cooling of the basin, can be easily and advantageously carried out by the installation of a chimney covering the free space located in the center of the torus; this chimney is provided with a propeller creating forced ventilation and an upward air flow; this current of air coming from around the basin and passing under this basin can be guided so as to lick the underside of said basin.
  • the heat exchangers can conventionally be constituted by plate exchangers, located for example in the free space forming the center of the torus, which receive on the one hand, by means of a pump, the water from the basin and on the other share a fluid allowing cooling.
  • autonomous exchanger means an individualized, independent exchanger and therefore interchangeable; moreover, these submerged autonomous exchangers are by definition supplied with water from the basin using known devices providing water at low or medium pressure.
  • FIGS. 1, 2, 3, 4 and 5 The following nonlimiting example illustrates a preferred embodiment of the invention; a basin according to this example is shown diagrammatically in FIGS. 1, 2, 3, 4 and 5.
  • Figure 1 is a sectional view of a basin according to the invention.
  • Figures 2 and 3 are diagrams, in plan and in section, of a wall portion of a basin according to the invention with its coating of stainless steel.
  • Figures 4 and 5 are diagrams, in section, of two exchangers, one thermal and the other ionic immersed in the basin.
  • a basin of this type possibly fitted with accessory input or output devices called "chip jumps" which are preferably separated in structure from the basin, would be capable of receiving approximately 10,000 t of active material to be stored.
  • Figures 2 and 3 are diagrams, in plan and in section, of a portion of basin wall showing a method of interior coating, using stainless steel, of the walls of this basin.
  • FIG 3 we see the circular concrete wall 8 which, thanks to the coating device according to the present invention, we can leave the internal surface to be coated in the state of raw concrete; at 9 is shown the internal coating of stainless steel; this coating is made from unitary elements which welded to each other constitute a corrugated surface. These unit elements can have very different shapes, but it is important that the welds 10 between two neighboring unit elements are made on ends of these elements which are at a certain distance from the wall when said elements are pressed against said wall; thanks to this latter arrangement it can be verified that the welds between the various elements are properly carried out.
  • the basins according to the invention have considerable advantages compared to current basins; for the most part the new basins are much more balanced, more resistant to deformations and earthquakes, easier to build and use and, for the same footprint, much more efficient as regards the quantities of radioactive materials which are storable in said basins.

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Treatment Of Water By Ion Exchange (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Packages (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
EP80400980A 1979-07-02 1980-06-30 Bassins à grande contenance pour le stockage de produits radioactifs Expired EP0022031B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80400980T ATE3599T1 (de) 1979-07-02 1980-06-30 Becken mit grossem inhalt zur lagerung radioaktiver produkte.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7917158A FR2460528A1 (fr) 1979-07-02 1979-07-02 Nouveaux bassins a grande contenance pour le stockage de produits radioactifs
FR7917158 1979-07-02

Publications (2)

Publication Number Publication Date
EP0022031A1 EP0022031A1 (fr) 1981-01-07
EP0022031B1 true EP0022031B1 (fr) 1983-05-25

Family

ID=9227401

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80400980A Expired EP0022031B1 (fr) 1979-07-02 1980-06-30 Bassins à grande contenance pour le stockage de produits radioactifs

Country Status (7)

Country Link
EP (1) EP0022031B1 (enrdf_load_stackoverflow)
JP (1) JPS5614197A (enrdf_load_stackoverflow)
AT (1) ATE3599T1 (enrdf_load_stackoverflow)
CA (1) CA1138660A (enrdf_load_stackoverflow)
DE (1) DE3063467D1 (enrdf_load_stackoverflow)
ES (1) ES493008A0 (enrdf_load_stackoverflow)
FR (1) FR2460528A1 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0624800Y2 (ja) * 1986-05-29 1994-06-29 株式会社石井鉄工所 漏水検知機構を設けた貯蔵プ−ルの二重壁構造

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1575859A (enrdf_load_stackoverflow) * 1968-06-10 1969-07-25
DE2720434B2 (de) * 1977-05-06 1979-08-23 Aleksandr Grigorevitsch Ljubivyj Kühlsystem zur Kühlung eines Satzes von Brennstoffelementen in Atomkernreaktor-Behältern
DE2723681A1 (de) * 1977-05-25 1978-11-30 Artemiev Trommel zur lagerung von kernreaktor- brennstoffelementensaetzen
DE2730729A1 (de) * 1977-07-07 1979-01-25 Nukem Gmbh Vorrichtung zum lagern bestrahlter bzw. abgebrannter brennelemente aus hochtemperatur-kernreaktoren
JPS5431898A (en) * 1977-08-15 1979-03-08 Hitachi Ltd Spent fuel storage facility with forced circulation device

Also Published As

Publication number Publication date
FR2460528B1 (enrdf_load_stackoverflow) 1983-07-22
FR2460528A1 (fr) 1981-01-23
DE3063467D1 (en) 1983-07-07
EP0022031A1 (fr) 1981-01-07
JPS5614197A (en) 1981-02-10
JPH0147759B2 (enrdf_load_stackoverflow) 1989-10-16
ES8103873A1 (es) 1981-02-16
ATE3599T1 (de) 1983-06-15
ES493008A0 (es) 1981-02-16
CA1138660A (en) 1983-01-04

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