Sensitivity- and Uncertainty-Based Criticality Safety Validation Techniques

B. L. Broadhead*, B. T. Rearden, C. M. Hopper, J. J. Wagschal, C. V. Parks

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

177 Scopus citations


The theoretical basis for the application of sensitivity and uncertainty (S/U) analysis methods to the validation of benchmark data sets for use in criticality safety applications was developed. Sensitivity analysis produce energy-dependent sensitivity coefficients that give the relative change in the system multiplication factor keff value as a function of relative changes in the cross-section data by isotope, reaction and energy. Integral indices that utilize the sensitivity information to quantify similarities between pairs of systems, typically a benchmark experiment and design system, were developed. Uncertainty analysis provide an estimate of the uncertainties in the calculated values of the system keff.

Original languageAmerican English
Pages (from-to)340-366
Number of pages27
JournalNuclear Science and Engineering
Issue number3
StatePublished - Mar 2004


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