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A technique for code validation for criticality safety calculations

Description: There are probably as many techniques to validate computer codes for criticality safety purposes as there are computer codes and code validators. One method used at Martin Marietta Energy Systems, Inc., to validate the KENO code and associated cross sections consists of determining a single-sided, uniform-width, closed-interval, lower tolerance band for k{sub eff} of critical systems. For application, this lower tolerance band becomes the upper safety limit (USL) acceptance criteria for subcriticality based upon the KENO calculations. A system is considered acceptably subcritical if a calculated k{sub eff} plus 2 standard deviations lies below this upper safety limit (i.e., k{sub eff} + 2{sigma} < USL). 5 refs., 1 fig.
Date: January 1, 1991
Creator: Dyer, H.R.; Jordan, W.C. (Oak Ridge National Lab., TN (United States)) & Cain, V.R. (Oak Ridge Y-12 Plant, TN (United States))
Partner: UNT Libraries Government Documents Department