b'Figure 3. Evolution of radial temperature and stress profiles through the TWIST LOCA transient. Predictions are generated using the fuel performance code BISON.represent a fully prototypic thermalparameters such as rod plenum volume evolution in the fuel will be uniqueand initial pre-pressurization ensuring in the world and will be crucial toproper cladding balloon targets to investigate questions related to FFRDinvestigate the FFRD phenomena are behavior of high burnup fuels. Themet. BISON has also been used to gain fuel performance code BISON hasa better understanding of fuel stress been used to identify fuel rod designbehavior during a LOCA. Modeling 146 2021|AFC ACCOMPLISHMENTS'