Final disposal container and method for the production thereof

Abstract

The present invention relates to a storage container ( 10 ), in particular a final disposal container for contaminated materials. So that the storage container can be produced particularly advantageously and substantially without the occurrence of dross, the storage container ( 10 ) comprises a container body ( 12 ) having a container base ( 26 ) and at least one container side wall ( 28, 30, 32, 34 ) wherein the container body ( 12 ) has a filling opening ( 16 ) that can be closed by a container cover ( 14 ), wherein the container body ( 12 ), at the end of at least one container side wall ( 28, 30, 32, 34 ) arranged opposite the container base ( 26 ), has a projection ( 36 ) that has a wedge-shaped cross section and that is formed on the container inner side, and wherein the wedge-shaped projection ( 36 ) thickens due to a slanted portion ( 38 ) that extends at an angle in a range from ≧10° to ≦35° relative to the orientation of the container side wall ( 28, 30, 32, 34 ). The present invention also relates to a method for producing a storage container ( 10 ), in particular a final disposal container for contaminated materials.

1 . A storage container, in particular a final disposal container for contaminated materials, comprising a container body ( 12 ) having a container base ( 26 ) and at least one container side wall ( 28 ,  30 ,  32 ,  34 ) wherein the container body ( 12 ) has a filling opening ( 16 ) that can be closed by a container cover ( 14 ), wherein the container body ( 12 ), at the end of at least one container side wall ( 28 ,  30 ,  32 ,  34 ) arranged opposite the container base ( 26 ), has a projection ( 36 ) that has a wedge-shaped cross section and that is formed on the container inner side, and wherein the wedge-shaped projection ( 36 ) thickens due to a slanted portion ( 38 ) that extends at an angle in a range from ≧10° to ≦35° relative to the orientation of the container side wall ( 28 ,  30 ,  32 ,  34 ). 
     
     
         2 . The storage container according to  claim 1 , wherein the container body ( 12 ) is formed from cast iron, preferably from ductile cast iron. 
     
     
         3 . The storage container according to  claim 1 , wherein the storage container ( 10 ), on its upper side and in the region of at least one projection ( 36 ), has at least one transport opening ( 40 ) for transporting the storage container ( 10 ). 
     
     
         4 . The storage container according to  claim 1 , wherein the storage container ( 10 ), is cuboidal and has a square or rectangular cross section. 
     
     
         5 . The storage container according to  claim 4 , wherein the wedge-shaped projection ( 36 ) is arranged in a locally delimited manner at a corner of the container body ( 12 ) and a wedge-shaped projection ( 36 ) is preferably arranged at each corner facing the filling opening ( 16 ). 
     
     
         6 . The storage container according to  claim 1 , wherein the wedge-shaped projection ( 36 ) is formed as a projection ( 36 ) running around on the container periphery and/or as a projection ( 36 ) running around on the periphery of the filling opening ( 16 ). 
     
     
         7 . The storage container according to  claim 1 , wherein the wedge-shaped projection ( 36 ) is formed as a receiving console for at least partly receiving the container cover ( 14 ). 
     
     
         8 . The storage container according to  claim 1 , wherein the wedge-shaped projection ( 36 ) thickens due to a slanted portion ( 38 ) that extends at an angle in a range from ≧20° to ≦25°, in particular 22°, relative to the orientation of the container side wall ( 28 ,  30 ,  32 ,  34 ). 
     
     
         9 . The storage container according to  claim 1 , wherein the storage container ( 10 ) closed by means of a container cover ( 14 ) has a thickness at any position of ≧50 mm, in particular in a range from ≧50 mm to ≦200 mm, for example ≧90 mm to ≦120 mm, most preferably 100 mm. 
     
     
         10 . The storage container according to  claim 1 , comprising a container cover ( 14 ), wherein the container cover ( 14 ) can be screwed to the container body ( 12 ), or comprising two container covers ( 14 ), wherein the second container cover ( 14 ) overlaps the first container cover ( 14 ). 
     
     
         11 . The storage container according to  claim 10 , comprising two container covers ( 14 ), an inner seal ( 46 ) for sealing the container cover ( 14 ) associated with the container interior and an outer seal ( 48 ) for sealing the container cover ( 14 ) associated with the container exterior, wherein the inner seal ( 46 ) comprises an elastomer that is designed to seal the container interior with respect to thermal influences and/or radioactivity and the outer seal ( 48 ) comprises an elastomer that is designed to seal the container interior with respect to the moisture. 
     
     
         12 . The storage container according to  claim 9 , wherein the container cover ( 14 ) and the container body ( 12 ) are formed in such a way that the container cover ( 14 ) fastened on the container body ( 12 ) protrudes beyond the container body ( 12 ) in a direction away from the container interior by preferably at least 10 mm. 
     
     
         13 . The storage container according to  claim 1 , wherein the container body ( 12 ), on its container base ( 26 ), has at least one container foot ( 44 ), which faces away from the container interior and protrudes beyond the container base in a direction away from the container interior by preferably at least 20 mm, or the container body ( 12 ), on its container base ( 26 ), has a peripheral base bead ( 54 ) facing away from the container interior. 
     
     
         14 . The storage container according to  claim 13 , comprising the peripheral base bead ( 54 ) facing away from the container interior, wherein the base bead ( 54 ) protrudes with respect to the container base ( 26 ) by at least 10 mm, preferably at least 20 mm, such that a recess ( 56 ) is formed in the region of the container base ( 26 ), the base bead ( 54 ) has a width of at least 50 mm, preferably at least 100 mm, and/or the base speed ( 54 ) slopes in the direction of the container interior via a canted portion ( 58 ). 
     
     
         15 . The storage container according to  claim 1 , wherein the container body ( 12 ) is cuboidal and, on the container inner side, has a thickened portion. which adjoins two adjacent container side walls ( 28 ,  30 ,  32 ,  34 ) and the container base ( 26 ) and extends into the container interior. 
     
     
         16 . The storage container according to  claim 15 , wherein the thickened portion has a circular and/or spherical profile and/or the thickened portion extends from the container side walls ( 28 ,  30 ,  32 ,  34 ) and the container base ( 26 ) by at least 110 mm, preferably by at least 135 mm, into the container interior. 
     
     
         17 . A method for producing a storage container ( 10 ), in particular a final disposal container for contaminated materials according to one of the preceding claims, wherein the storage container ( 10 ) is produced by a casting method, and wherein a casting mould is used that is formed in such a way that a container body ( 12 ) having at least one container side wall ( 28 ,  30 ,  32 ,  34 ) is shaped, wherein the container body ( 12 ) has a filling opening ( 16 ) that can be closed by a container cover ( 14 ), wherein the container body ( 12 ), at the end of at least one container side wall ( 28 ,  30 ,  32 ,  34 ) arranged opposite the container base ( 26 ), has a projection ( 36 ) that has a wedge-shaped cross section and is formed on the container inner side, and wherein the wedge-shaped projection ( 36 ) thickens due to a slanted portion ( 38 ) extending at an angle in a range from ≧10° to ≦35° relative to the orientation of the container side wall ( 28 ,  30 ,  32 ,  34 ). 
     
     
         18 . The method according to  claim 17 , wherein at least one transport opening ( 40 ) is formed in the upper side of the storage container ( 10 ) and in the region of at least one projection ( 36 ), in particular by means of a machining step. 
     
     
         19 . The method according to  claim 17 , wherein, during the casting method, a casting core is used to form at least one transport opening ( 40 ). 
     
     
         20 . The method according to  claim 17 , wherein a casting mould is used that is formed in such a way that at least one container foot ( 44 ) is formed on the container base ( 26 ), the container foot facing away from the container interior and protruding beyond the container base in a direction away from the container interior by preferably at least 20 mm, or a peripheral base bead is formed on the container base ( 26 ), the base bead facing away from the container interior.