b'Figure 2. Peak cladding temperature(PCT) vs. iteration index.some specified tolerance limits giventhe covariance between two random in terms of probability and confidencevariables) between some sensitivity level. Uncertainties in some of the ATFinput to the accident analysis (e.g., design parameters are inevitable whilethe thermal conductivity of fuel) and the ATF options are under development.some output (e.g., the PCT) of the Inherent in the UQ process is theanalysis. The statistical data required by ability to account for uncertainties andthe SA is assembled through multiple it facilitates a systematic comparisonaccident analyses with each analysis of the performance of different ATFaccounting for the random variability options under accident conditions. Theof some select sensitivity parameters. SA process evaluates the relative impactThe correlation coefficients provide of different design parameters on theindication by magnitude, the strength FOM. The quantification of the SA isof the relation between input and by way of determining the correlationoutput magnitude the strength of the coefficient (normalized version ofrelation between input and output. 2019|AFC ACCOMPLISHMENTS 153'