Joint Institute for Power and Nuclear Research – Sosny | Nuclear reactor physics laboratory

Joint Institute for Power and Nuclear Research – Sosny

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Nuclear reactor physics laboratory

The laboratory was founded in 1999 to carry out computational and theoretical studies of the power and research reactors’ neutron characteristics.

Contact information

Head of the Laboratory:

Dr. Sc. Eduard RUDAK

E-mail: rubin@sosny.bas-net.by

Tel.: +375 (17) 3911344

Fax: +375 (17) 3911335

Main research fields

Modeling of physical phenomena occurring in the core of the VVER-1000 (1200).

Parallel version of the loading pattern optimization technique for VVER are being developed and adapted on multiprocessor computers (supercomputer SKIF-K500).

The code for calculating the steady-state and transient neutronics in VVER reactors on the basis of the correction of diffusion coefficients with the ability to describe the boundary conditions with linear extrapolation lengths are developing.

The laboratory is performing investigations aimed at the study of specific features of neutronics in advanced fuel assembly VVER-1200, developing software module of variables visualization including imposition of macrodistribution of power to train professionals, carrying out numerical and theoretical study of the technical possibilities of using spent fuel assemblies at various stages of storage as a source of gamma-radiation for technological processes.

Laboratory employees carry out educational and ideological work aimed at public acceptance of nuclear power in the Republic of Belarus (speaking at conferences, seminars, take part in information activities for informing the public about the benefits of nuclear energy, produce bulletin series, “Atomic Energy” and booklets of school series “I want to know everything”, publish article in state media).

The information and analytical reviews and reports for national authorities to inform them about all aspects of the development trends of the global nuclear energy industry are being made.

Main projects

The State Scientific Research Program: “Nuclear power, nuclear and radiation technologies”

Determination of the accumulation of fission products and actinides in the fuel assemblies (FAs) in the fuel campaign based on height and uneven cross-section of FAs.

The State Program: “Scientific support for nuclear power engineering development in Republic of Belarus for 2009-2010 and up to 2020.”

Activity 3.

Development of parallel version of the loading pattern optimization algorithm for VVER and its adaptation for multiprocessor computers (supercomputer SKIF-500). To analyze some safety characteristics for normal operation and to compare the results with the acceptance limits.

Development of the code for calculation the steady-state and transient neutronics in VVER reactors on the basis of the correction of diffusion coefficients with the ability to describe the boundary conditions with linear extrapolation lengths, its verification and calculation some safety parameters.

Activity 7.

Investigation of the features of neutron processes in advanced fuel assembly VVER-1200, to design software of values visualization with taking into account the superposition of the macrodistribution of power to train professionals.

Activity 9

Production of information material to the state media and population in the field of nuclear power engineering.

Preparation of analytical reviews and reports to the national government bodies to inform them on all aspects related to the trends of the global nuclear energy

Main developments

Technique and code for transients calculation in VVER reactors taking into account thermohydraulic feedback have been developed. Spatial part of the problem is solved with diffusion finite difference approximation with correction of diffusion coefficients. Nonuniformity of burnup within the core and fuel assembly is taking into account.

Methodology for loading pattern optimization of equilibrium and transient cycles for VVER reactor have been developed on the basis of simulated annealing. Parallel version of algorithm on the basis of parallel Markov chains with states exchange have been worked out.

The direction for future research

Research on the nuclear reactors physics, calculations of VVER fuel assemblies’ neutron characteristics of different modifications, safety-related calculations for the nuclear power plant under construction, etc.

International cooperation

Participation in various international conferences and seminars, make presentations. Participation in IAEA training courses and workshops.