Conference Proceedings Paper
Validation of KENO V.a Using ENDF/B-VI and ENDF/B-VII for Criticality Safety Applications
33rd Annual CNS Conference - 2012 June 10-13
Ruxandra Dranga (Atomic Energy of Canada Limited)
Eugene Masala (Atomic Energy of Canada Limited)
An upper subcritical limit (USL), which includes allowance for bias and bias uncertainty in the calculated k-effective, needs to be established for all criticality safety code calculations. In this paper, the bias and bias uncertainty associated with k-effective values computed using KENO V.a are evaluated based on benchmark experiments for U-235, U-233, Pu-239 and MOX systems. The code validation is performed using the 238-group ENDF/B-VI and ENDF/B-VII cross-section libraries provided in the SCALE code package. The evaluation suggests that the ENDF/B-VII library performs better than the ENDF/B-VI, with biases less than 2 mk for most systems.
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