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US 4,131,511 AGranted
Nuclear fuel element
AssigneeCombustion Engineering, Inc.
InventorsWalter J. Mordarski, Jerome Roth
Life of this patent
Estimating the term…
Abstract
A nuclear fuel pin is formed of an elongated metallic tube, closed at each end, containing stacked fuel pellets and material including little, or no, fissionable material, and formed into porous, or bubbled, microspheres placed in the annulus between the pellets and the internal wall of the tube.
Claims9
A fuel pin for a nuclear reactor, including,
- a casing of zirconium alloy formed into a tube which is closed at each end, a stack of axially aligned nuclear fuel pellets positioned within the casing, and material formed into microspheres which are friable with a controlled crushing strength and which are porous with a controlled density and having substantially no fissionable components positioned in the annulus between the stack of pellets and the internal wall of the casing.
Dependencies are inferred from the claim text.