Radioactivity-shielding transport or storage receptacle for radioactive wastes
AssigneeSteag, Kernergie GmbH
InventorsHeinrich Baatz, Dieter Rittscher
Life of this patent
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Abstract
A unitarily cast receptacle for the storage of radioactive wastes consists of cast iron, especially spherolitic cast iron, or cast steel, and has upright walls defining a chamber in which the radioactive waste is stored above a base unitary with these walls. A cover is recessed in the receptacle and, according to the invention, is overlain by a safety cover which fits within an annular recess defined by a welding lip formed unitarily on the receptacle and defined at the upper end thereof by an upwardly open annular groove. The safety cover, which overlies the shielding cover which can be of the plug type, may have a counterlip which is likewise defined by an upwardly open annular groove.
Claims9
A shielding transport and storage vessel for radioactive wastes, comprising:
- a receptacle body cast unitarily with an upstanding wall and a bottom defining the interior of the receptacle;
- a shielding cover received in said receptacle and capable of resisting radiation transmission from the interior thereof, said body being formed with a shoulder and said shielding cover with a flange resting upon and connected to said shoulder;
- and
- a safety cover overlying said shielding cover and hermetically sealed to said wall, said wall having an upper end formed with an annular continuous upstanding welding lip and said safety cover formed with an upstanding welding lip adjacent the welding lip of said body, the hermetic seal between said safety cover and said body being effected by a bead of weldment bridging said lips, at least one passage being cast into said body and opening at the upper end thereof, said safety cover extending beyond and overlying the opening of said passage, thereby sealing same.
Dependencies are inferred from the claim text.