Flak jacket protective cover for spent nuclear fuel storage casks
OwnerAlex G. Copsoninventor
Life of this patent
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Abstract
Spent nuclear fuel storage casks, particularly a protective and venting cover for such storage casks which are stored above-ground. The protective and venting cover may be assembled from annular or doughnut-shaped cast concrete members stacked one upon the other. The annuli are axially indexed with respect to the storage cask, such that a venting annulus is formed about the storage cask and the annulus contributes to a defocusing geometry against armor piercing weapons, such as anti-tank "shaped charge" weaponry.
Claims13
A flak jacket protective cover for a spent nuclear fuel storage cask of the type having a cylindrical shape, defining a lower portion, a mid-portion and a top portion, with top and bottom closures, said flak jacket protective cover comprising:
- an annular base configured to support the cask bottom closure and encircling the lower portion of the cask;
- a plurality of complemental annular mid-pieces stacked one upon the other on top of said annular base and encircling the cask mid-portion;
- a complemental annular cap supported upon a mid-piece;
- and
- an indexing cylinder fitted over the nuclear fuel storage cask, so as to axially index placement of said annular base, annular mid-pieces and annular top,
- wherein said annular base, annular mid-pieces and said annular cap define an inner venting annulus and a protective and venting cover over the spent nuclear fuel storage cask.
A flak jacket protective cover for a spent nuclear fuel storage cask of the type having a cylindrical shape, defining a lower portion, a mid-portion and a top portion, with top and bottom closures, said flak jacket protective cover comprising:
- an annular base configured to support the cask bottom closure and encircling the lower portion of the cask;
- a plurality of complemental annular mid-pieces stacked one upon the other on top of said annular base and encircling the cask mid-portion;
- a complemental annular cap supported upon a mid-piece;
- and
- indexing ridges formed on said annular base for indexing the cask and the annular mid-pieces at a spaced location thereby forming an inner venting annulus between the cask and the annular mid-pieces.
Dependencies are inferred from the claim text.