Patent Number: 
Section: claims

1. A system for accident tolerant oxide fuel, said system comprising:a fuel assembly comprising at least one disk placed axially between fuel pellets composed of UO2, wherein said at least one disk possesses a higher thermal conductivity material than that of said UO2 to provide enhanced heat rejection thereof; andwherein said fuel pellets comprise annular pellets having an annulus filled with a higher thermal conductivity material from that of said at least one disk,wherein each annulus among said annular pellets is filled with rod-shaped inserts. 2. The system of claim 1 wherein at least one of said higher thermal conductivity material comprises at least one of the following: Si, Zr, Al2O, Nb or Mo. 3. A system for accident tolerant oxide fuel, said system comprising:at least one disk placed axially between fuel pellets comprising UO2, wherein said at least one disk possesses a higher thermal conductivity material than that of said UO2 to provide enhanced heat rejection thereof;wherein said fuel pellets comprise annular pellets having an annulus filled with a higher thermal conductivity material from that of said at least one disk; anda cladding coating comprising zircaloy coated with a material that provides stability and high melting capability and self-healing properties at elevated temperatures,wherein each annulus among said annular pellets is filled with rod-shaped inserts. 4. The system of claim 3 wherein said material coated on said zircaloy comprises ZrSi2. 5. The system of claim 3 wherein said material coated on said zircaloy comprises at least one silicide. 6. The system of claim 3 wherein said material that provides stability and high melting capability and self-healing properties at elevated temperatures is ZrSi, and wherein said higher thermal conductivity material comprises at least one of the following: Si, Zr, Al2O3, Nb, or Mo.