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


Presented at:
33rd Annual CNS Conference
2012 June 10-13
Location:
Saskatoon, Canada
Session Title:
Physics-2

Authors:
Ruxandra Dranga (Atomic Energy of Canada Limited)
Eugene Masala (Atomic Energy of Canada Limited)
  

Abstract

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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