Proceedings of the conference

Artemov V.G. Ivanov A.S. Kuznetsov A.N.

Calculation of subchannel power density in 'FULL-CORE' benchmarks for VVER-440 and MIDICORE for VVER-1000 using the SAPFIR_95&RC_VVER program code

Benchmarks [1, 2, 3, 4] discussed in a frame of the paper represent detailed pin by pin 2D calculations made by Monte Carlo method. The main purpose of these benchmarks is verification of macro-codes that are used for neutronic calculations of VVER reactors.

The SAPFIR_95&RC_VVER program code uses two methods of pin by pin power distribution's calculation: superposition method and direct "fine-grid" method where radial grid points in the core coincide with the centers of fuel elements in the fuel assembly.

The paper describes the calculation methods of pin by pin power distribution used in the SAPFIR_95&RC_VVER program code and presents the benchmark's calculation results given in [1, 2, 3, 4].

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