EP0351667A2 - Château de transport et/ou de stockage pour matériaux radioactifs - Google Patents

Château de transport et/ou de stockage pour matériaux radioactifs Download PDF

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Publication number
EP0351667A2
EP0351667A2 EP89112449A EP89112449A EP0351667A2 EP 0351667 A2 EP0351667 A2 EP 0351667A2 EP 89112449 A EP89112449 A EP 89112449A EP 89112449 A EP89112449 A EP 89112449A EP 0351667 A2 EP0351667 A2 EP 0351667A2
Authority
EP
European Patent Office
Prior art keywords
layer
corrosion protection
cover
container body
transport
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Withdrawn
Application number
EP89112449A
Other languages
German (de)
English (en)
Other versions
EP0351667A3 (fr
Inventor
Wolfgang Siegert
Ethwart Pollmann
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.)
Nukem GmbH
Original Assignee
Nukem GmbH
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 Nukem GmbH filed Critical Nukem GmbH
Publication of EP0351667A2 publication Critical patent/EP0351667A2/fr
Publication of EP0351667A3 publication Critical patent/EP0351667A3/fr
Withdrawn legal-status Critical Current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
    • G21F5/00—Transportable or portable shielded containers
    • 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
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/14—Linings or internal coatings

Definitions

  • the invention relates to a metallic transport and / or storage container for bio-harmful substances, in particular for radioactive substances, consisting of a container body and a shielding and protective cover system, the interior of the container body being provided with a metallic corrosion protection.
  • Metallic containers are used for the transport and / or storage of bio-harmful substances, which must meet the relevant safety regulations with regard to inventory, stability, tightness and possible accidents.
  • at least the container interior must have a protective layer which, in the case of reusable containers, must also be able to be cleaned well.
  • Such containers for irradiated nuclear fuel elements are loaded in borated water in nuclear power plants. Therefore, these containers must have a corrosion protection on the container surfaces, i.e. also on the surface of the interior, which must be capable of decontamination, since the water in the loading basin can contaminate the container through abrasion from surface contamination that adheres to the irradiated nuclear fuel elements. Since the surface of the exterior of the container is generally protected by a so-called shirt when it is loaded under water, contamination is preferably carried out inside the container.
  • the container interior is often lined with stainless steel sheet, also called liner.
  • liner also called liner.
  • these liners require an additional seal against the actual container body.
  • Another disadvantage is poor heat transfer due to the inevitable gap between the liner and the container body in the case of heat-producing radioactive inventory.
  • Nickel-plated layers (DE-GM 77 28 331) have disadvantages in terms of cost and do not protect, for example, against aggressive solutions.
  • the invention is therefore based on the object of creating a metallic transport and / or storage container for bio-harmful substances, in particular for radioactive substances, consisting of a basic container body and a shielding and protective cover system, the interior of the basic container body being provided with metallic corrosion protection , which ensures perfect heat transfer, protects the container against corrosion, is stress-free and easy to decontaminate, and is relatively easy to manufacture.
  • the corrosion protection is composed of a corrosion protection adhesive layer, consisting of a molten chromium-nickel alloy, and a homogeneous, compact, smooth top layer of the same material which is also molten on the corrosion protection adhesive layer, the corrosion protection
  • the adhesive layer and the cover layer cover the entire inside of the container body, also in the area of the shielding cover and the protective cover.
  • the cover layer is preferably applied under protective gas.
  • an anti-corrosion layer (4) on the inside of the container body (1). It consists of a chrome-nickel alloy, which at for example, is applied in a molten state by thermal spraying. For liability reasons, the application is preferably made in the presence of oxygen.
  • the thickness of the corrosion protection adhesive layer (4) can be, for example, 0.1-0.4 mm.
  • a cover layer (5) made of the same material is also applied to the corrosion-adhesive layer (4) in a molten state in one or more layers, for example again by thermal spraying. It is particularly advantageous if the thermal spraying is carried out under protective gas in order to avoid oxide inclusions and to obtain a homogeneous top layer.
  • the desired thickness of the cover layer is set according to the requirements of the individual container areas (lid area, sealing area, bottom and circumferential area).
  • the corrosion protection adhesive layer (4) and the cover layer (5) cover the inside of the container body (1) continuously, also in the area of the shielding cover (2) and the protective cover (3).
  • top layer (5) After the top layer (5) has been applied, its surface is aftertreated by mechanical compaction.
  • the common final thickness of the corrosion protection adhesive layer (4) plus top layer (5) is achieved by reducing the specified excess thickness.
  • the final thickness is usually 0.5 - 1.2 mm.
  • the compaction can be carried out, for example, by shot peening using steel balls or by hammering with pneumatically driven, nail-shaped tools.
  • surface finishing can be carried out in some cases.
  • the mechanical compression reduces stresses or tensile stresses are converted into compressive stresses (improvement of the layer properties). Any porosity previously present is reduced or eliminated. Overall, there is a decisive improvement in corrosion resistance.
  • a corrosion protection adhesive layer made of NiCr 80/20 alloy was first automatically applied by thermal spraying ( Thickness 0.3 mm). The same alloy was then applied in the same way, but under an argon atmosphere, as a top layer in 2 to 7 layers, depending on the position of the layer, on the inner wall of the container.
  • the cover layer thickness was between 0.7 and 1.5 mm.
  • the predetermined oversize of the layer thickness was reduced by the subsequent hammer compaction, ie the previous applied layer was reduced by 20-30% in thickness.
  • the layer had a porous surface similar to sandpaper before the hammer compaction, the surface roughness after the compaction process was only about 5 ⁇ Ra.
  • the corrosion layer was homogeneous, showed hardly any pores or inclusions and showed no binding defects in the area of the transition to the body of the container.
  • the adhesive strength was approx. 30 N / mm2 and the hardness approx. 250 (HV 0.1). After 11 days of aging in dilute boric acid, no corrosion attack was found.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Laminated Bodies (AREA)
EP89112449A 1988-07-20 1989-07-07 Château de transport et/ou de stockage pour matériaux radioactifs Withdrawn EP0351667A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8809283U 1988-07-20
DE8809283U DE8809283U1 (de) 1988-07-20 1988-07-20 Transport- und/oder Lagerbehälter für radioaktive Stoffe

Publications (2)

Publication Number Publication Date
EP0351667A2 true EP0351667A2 (fr) 1990-01-24
EP0351667A3 EP0351667A3 (fr) 1990-07-11

Family

ID=6826141

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89112449A Withdrawn EP0351667A3 (fr) 1988-07-20 1989-07-07 Château de transport et/ou de stockage pour matériaux radioactifs

Country Status (3)

Country Link
EP (1) EP0351667A3 (fr)
JP (1) JPH0641991B2 (fr)
DE (1) DE8809283U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2026008092A1 (fr) * 2024-07-03 2026-01-08 Skoda Js A.S. Procédé de fabrication d'un fût pour combustible nucléaire usé et fût fabriqué à l'aide du procédé

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9005277U1 (de) * 1990-05-09 1991-02-14 Edelhoff Polytechnik Gmbh & Co, 58640 Iserlohn Aufnahmeeinrichtung für vorzugsweise gefährdende Substanzen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1438241A (fr) * 1964-10-21 1966-05-13 Lyonnaise De Plomberie Ind Soc Perfectionnements aux caissons ou châteaux pour le transport des matières radioactives et analogues
DE2931747C2 (de) * 1979-08-04 1982-09-09 Siempelkamp Gießerei GmbH & Co, 4150 Krefeld Verfahren zum Aufbringen einer metallischen decontaminierbaren Schicht bei einem Lagerbehälter für radioaktive Abfallstoffe
FR2521337B1 (fr) * 1982-02-10 1987-01-16 Mitsui Mining & Smelting Co Recipient etanche pour dechets radioactifs
DE3324291C2 (de) * 1983-07-06 1986-10-23 Deutsche Gesellschaft für Wiederaufarbeitung von Kernbrennstoffen mbH, 3000 Hannover Verfahren zum Befüllen von Metallbehältern mit einer radioaktiven Glasschmelze und Vorrichtung zur Aufnahme einer radioaktiven Glasschmelze

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2026008092A1 (fr) * 2024-07-03 2026-01-08 Skoda Js A.S. Procédé de fabrication d'un fût pour combustible nucléaire usé et fût fabriqué à l'aide du procédé

Also Published As

Publication number Publication date
EP0351667A3 (fr) 1990-07-11
DE8809283U1 (de) 1988-09-22
JPH0269700A (ja) 1990-03-08
JPH0641991B2 (ja) 1994-06-01

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