2018 | AFC ACCOMPLISHMENTS 69 Figure 2. Peak Cladding Temperature (FeCrAl) in a Large- Break Loss-of-Coolant Accident (LB-LOCA). control coefficients/worths, kinetics parameters), and performance in a broad spectrum of transient and accident scenarios.The key components of the assessment are initial screening analyses, three-dimensional core anal- yses, and reactor system analyses.The integrated analytical approach starts with an initial screening using infinite lattice physics calculations.Three- dimensional core analyses then provide fuel cycle performance data and reactor kinetics parameters for time-dependent accident analysis. Reactor system analyses finally provide estimates of safety margins and “coping time”, i.e., time to various limiting/failure condi- tions, under various transient accident scenarios.The search for attractive and viable advanced fuels/ATF candidates requires consideration of a broad spectrum of potential fuel and cladding options. Evaluation of the performance of these fuel and cladding options is vitally important, because it identi- fies whether the options have at least equivalent performance to the present UO2-Zr fuel-cladding system under