Title: Burn-up credit methodology validation in Bulgaria

Authors: Maria Manolova, Radostina Prodanova, Nikolay Mihajlov

Addresses: Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences (INRNE, BAS), 72, Tzarigradsko chausse Boul, Sofia 1784, Bulgaria. ' Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences (INRNE, BAS), 72, Tzarigradsko chausse Boul, Sofia 1784, Bulgaria. ' Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences (INRNE, BAS), 72, Tzarigradsko chausse Boul, Sofia 1784, Bulgaria

Abstract: A methodology for criticality safety analyses with burn-up credit application has been developed for the WWER spent fuel management facilities. This methodology is based on two worldwide-used code systems: SCALE 4.4 for depletion and criticality calculations and NESSEL-NUKO for depletion calculations. The methodology is in the process of extensive validation for WWER-440 and WWER-1000 spent fuel assembly depletion analysis-based comparisons with other depletion codes calculation results, as well as with appropriate and reliable experimental data.

Keywords: WWER reactors; spent fuel management; spent fuel assembly; nuclear inventory; depletion calculation; depletion comparison; nuclear waste management; nuclear power plants; nuclear energy; nuclear safety; criticality analysis; burn-up credit; Bulgaria.

DOI: 10.1504/IJNEST.2007.016666

International Journal of Nuclear Energy Science and Technology, 2007 Vol.3 No.3, pp.278 - 286

Available online: 11 Jan 2008 *

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