Heterogeneous Description of Fuel Assemblies for Correct Estimation  of Control Rods Efficiency in BR-1200

Bogdanova, E. V.; Bahdanovich, R B; Ryzhov, S. N.; Ternovykh, Mikhail; Тихомиров, Г. В.

doi:10.18502/keg.v3i3.1649

KEG

2018

DOI: 10.18502/keg.v3i3.1649

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Heterogeneous Description of Fuel Assemblies for Correct Estimation of Control Rods Efficiency in BR-1200

E. V. Bogdanova¹,

R B Bahdanovich²,

S. N. Ryzhov³

et al.

Abstract: This paper describes the development of full-scale models of the BR-1200 reactor for the MCU-FR code with a homogeneous and heterogeneous description of fuel assemblies' geometry. The correctness of the control rods efficiency calculation in a homogeneous model is analyzed. The control rods requiring heterogeneous modeling are defined.

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Testing the multigroup, group and subgroup options of the CONSYST / ABBN-RF system on criticality calculations of fast reactor models with MNUP fuel

Ternovykh

Bogdanova

2020

J. Phys.: Conf. Ser.

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The unified code CONSYST-2020 for neutron constants preparation and the ABBN-RF-2020 neutron data library are being testing as part of the new generation codes development for neutronic calculations of fast reactors with mixed nitride uranium-plutonium fuel (MNUP). Testing was carried out on prototype models of fast reactors with MNUP fuel. The errors of the multigroup, group and subgroup approximation are analyzed in comparison with the calculations performed using point-wise cross-sections libraries. The results obtained with point-wise cross-sections libraries are accepted in the final cross-verification as reference results. An assessment was made of the influence of approximations associated with averaging and preparing group cross-sections, and methodological errors determined by the selected spatial and angular computational grids. It was shown that the transition to the direct use of 299-group blocked constants reduces the error to 0.1 – 0.2%. The assessment of the efficiency of using the subgroup approximation shows the possibility of reducing the constant component of the error below 0.05%.

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Testing the multigroup, group and subgroup options of the CONSYST / ABBN-RF system on criticality calculations of fast reactor models with MNUP fuel

Ternovykh

Bogdanova

2020

J. Phys.: Conf. Ser.

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show abstract

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Heterogeneous Description of Fuel Assemblies for Correct Estimation of Control Rods Efficiency in BR-1200

Cited by 1 publication

References 2 publications

Testing the multigroup, group and subgroup options of the CONSYST / ABBN-RF system on criticality calculations of fast reactor models with MNUP fuel

Testing the multigroup, group and subgroup options of the CONSYST / ABBN-RF system on criticality calculations of fast reactor models with MNUP fuel

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