Container for long-term storage of radioactive material, and...

Details Container for long-term storage of radioactive material, and... Container for long-term storage of radioactive material, and...

2005-10-19

2010-06-22

Berman, Jack I (Department: 2881)

Radiant energy

Radiation controlling means

Shielded receptacles for radioactive sources

C250S505100, C250S506100, C250S515100

Reexamination Certificate

active

07741628

ABSTRACT:
A long-term storage container (1) for storage of radioactive material to inhibit radioactive radiation therefrom to the outside of the container, the top of said container to be closed by a screw-on radioactive radiation inhibiting lid (7), said container having an integral inner container part (2; 34; 62; 62′) of a first material, e.g. plastic material, an integral outer container part (3; 43; 69) of a second material, e.g. plastic material, and radioactive radiation inhibiting material (4; 38; 68) in an inter-space between the walls and bottoms of said inner and outer container parts. To fill the inter-space an inter-space container part (4; 38; 68) is integrally moulded through injection or pressure moulding and then fitted onto the inner container part (2; 34; 62; 62′) to subsequently mould the outer container part (3; 43; 69) onto the outside of the inter-space container part (4; 38; 68). A specially made container lid (7) is provided. A preferred twin-mould moulding apparatus (61) provides for simultaneous pre-casting of the inner container part (62′) and the outer container part (69) in a respective mould of the apparatus.

REFERENCES:
patent: 3466662 (1969-09-01), Blum
patent: 4569818 (1986-02-01), Popp et al.
patent: 6166390 (2000-12-01), Quapp et al.
patent: 6639236 (2003-10-01), Low et al.
patent: 7354544 (2008-04-01), Stengrimsen
patent: 7425195 (2008-09-01), Wissman et al.
patent: WO 01/57880 (2001-08-01), None

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