Sensitivity and uncertainty analysis applied to range of applicability determination

Sensitivity and uncertainty (S/U) analysis and the subsequent application of generalized-linear-least-squares methods (GLLSMs) were developed in the 1970s for application to primarily fast reactor studies. Recently, interest in the United States has increased in the use of the S/U and GLLSM techniques to validate data used in a criticality safety analysis. As a result, both the US Nuclear Regulatory Commission (NRC) and the US Department of Energy (DOE) have initiated programs to apply these techniques to their respective criticality safety application areas. This paper reviews the current status of this work.