Patent ID: 7372933
Filing Date: 2008-05-13
Classification: F16J,G21F

Abstract:
1. A radioactive-material container comprising: a container body configured to shield nuclear radiation, the container body including a cavity configured to store a basket containing a recycle fuel assembly; a lid configured to cover the cavity; and a double-ring metal gasket including: the areas have a top and a bottom opposing one another, said top and bottom have flat surfaces, wherein said areas have no intentional projecting parts before being sealed and during being sealed between said container body and said lid, said areas are configured to disperse tightening stress acting on the metal gasket when sealed between said container body and said lid, wherein a ratio of a wire diameter d of the coil spring to a sectional diameter D of the metal gasket, d/D, is approximately equal to or more than 0.02 and equal to or less than 0.08, wherein d is approximately equal to or more than 0.35 millimeter and equal to or less than 0.8 millimeter, and D is approximately equal to or more than 5.0 millimeters and equal to or less than 12.0 millimeters.