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Evaluation of BWR Burnup Calculations Using Deterministic Lattice Codes SCALE-6.2, WIMS-10A and CASMO5

1
School of Engineering, University of Liverpool, Liverpool L69 3GH, UK
2
National Nuclear Laboratory, Chadwick House, Warrington WA3 6AE, UK
3
Institute of Nuclear Engineering and Science, National Tsing Hua University, Hsinchu 30013, Taiwan
*
Author to whom correspondence should be addressed.
Energies 2020, 13(10), 2573; https://doi.org/10.3390/en13102573
Received: 31 March 2020 / Revised: 13 May 2020 / Accepted: 15 May 2020 / Published: 19 May 2020
The UK nuclear innovation programme supported by the government includes preparation for future ABWR construction. The UK has significant expertise in building and operating gas-cooled nuclear reactors and some experience with PWRs, while there is limited knowledge in BWR technologies. Hence, an important aim of this work is to understand the discrepancies between codes to assess uncertainties in BWR lattice and depletion calculations, while identifying specific development demands to progress existing tools into extended applications. The objective of the study is to quantify the discrepancy between SCALE-6.2, CASMO5 and the UK WIMS-10A deterministic lattice code for BWR lattice and burnup modelling. Two models of BWR systems were considered for this new systematic comparison. They are a single BWR pin-cell with UO2 fuel only, and a 3 by 3 array of BWR UO2 fuel rods with gadolinia rod in the centre. Criticality over burnup was estimated for both models using these codes. Spectral indexes, number densities and neutron spectrum were compared for several burnup stages using SCALE-6.2 and WIMS-10A. The study showed that kinf obtained with CASMO5 was in a good agreement with the SCALE-6.2. A clear discrepancy in behaviour was observed between WIMS-10A and SCALE-6.2 as well as CASMO5. View Full-Text
Keywords: nuclear fuel; burnup credit; BWR; SCALE-6.2; WIMS-10A; CASMO5; codes comparison; lattice computations nuclear fuel; burnup credit; BWR; SCALE-6.2; WIMS-10A; CASMO5; codes comparison; lattice computations
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Detkina, A.; Peakman, A.; Litskevich, D.; Liang, J.-H.; Merk, B. Evaluation of BWR Burnup Calculations Using Deterministic Lattice Codes SCALE-6.2, WIMS-10A and CASMO5. Energies 2020, 13, 2573.

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