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Accident-tolerant oxide fuel and cladding

United States Patent

May 30, 2017
View the Complete Patent at the US Patent & Trademark Office
Idaho National Laboratory - Visit the Technology Transfer and Commercialization Office Website
Systems and methods for accident tolerant oxide fuel. One or more disks can be placed between fuel pellets comprising UO.sub.2, wherein such disks possess a higher thermal conductivity material than that of the UO.sub.2 to provide enhanced heat rejection thereof. Additionally, a cladding coating comprising zircaloy coated with a material that provides stability and high melting capability can be provided. The pellets can be configured as annular pellets having an annulus filled with the higher thermal conductivity material. The material coating the zircaloy can be, for example, Zr.sub.5Si.sub.4 or another silicide such as, for example, a Zr-Silicide that limits corrosion. The aforementioned higher thermal conductivity material can be, for example, Si, Zr.sub.xSi.sub.y, Zr, or Al.sub.2O.sub.3.
Mariani; Robert D. (Idaho Falls, ID)
U.S. Department of Energy (Washington, DC)
13/ 847,009
March 19, 2013
STATEMENT OF GOVERNMENT RIGHTS The United States Government has rights in this invention pursuant to Contract No. AC07-05-ID114517 with the U.S. Department of Energy.