Development and assessment of a method for evaluating uncertainty of input parameters

Comparison of the RELAP5 and CATHARE2 calculated results with the FEBA, PERICLES and ACHILLES test data shows that the uncertainty bands envelope the experimental data in the majority of the measurement points. This supports the validity of obtained ranges of reflood-related models of RELAP5 and CATHARE2 codes. Based on the selected validation matrix, the IPREM has proved to be test, facility and code independent.