ASSESSMENT OF THE REACTIVITY BIAS AND BIAS UNCERTAINTY DUE TO WWER-440 FUEL DEPLETION UNCERTAINTIES

N.H. Baghdasaryan; S.A. Bznuni; A.M. Amirjanyan

doi:10.46991/PYSU:A/2017.51.1.060

ASSESSMENT OF THE REACTIVITY BIAS AND BIAS UNCERTAINTY DUE TO WWER-440 FUEL DEPLETION UNCERTAINTIES

Authors

N.H. Baghdasaryan Chair of Nuclear Physics, YSU, Armenia
S.A. Bznuni Chair of Nuclear Physics, YSU, Armenia
A.M. Amirjanyan Nuclear and Radiation Safety Center, Armenia

DOI:

https://doi.org/10.46991/PYSU:A/2017.51.1.060

Keywords:

criticality safety, spent fuel, burnup credit, bias, bias uncertainty

Abstract

In this paper, bias and bias uncertainty in the neutron multiplication factor due to biases and bias uncertainties in the calculated nuclide concentrations in the spent nuclear fuel of WWER-440 type was assessed. To determine isotopic biases and bias uncertainties in the calculated nuclide concentrations, they were compared to the results of the measurements of isotopic compositions from destructive radiochemical assay of WWER-440 spent fuel carried out in the RIAR. In calculations Monte Carlo uncertainty sampling method was used.

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Published

2017-03-20

How to Cite

Baghdasaryan, N., Bznuni, S., & Amirjanyan, A. (2017). ASSESSMENT OF THE REACTIVITY BIAS AND BIAS UNCERTAINTY DUE TO WWER-440 FUEL DEPLETION UNCERTAINTIES. Proceedings of the YSU A: Physical and Mathematical Sciences, 51(1 (242), 60–65. https://doi.org/10.46991/PYSU:A/2017.51.1.060