Authors & Affiliations
Artemov V.G., Artemova L.M., Korotaev V.G., Kuznetsov A.N.
Alexandrov Research Institute of Technoloqy, Sosnovy Bor, Russia
Artemov V.G. – Head of Laboratory, Cand. (Tech.) Sci., Alexandrov Research Institute of Technoloqy.
Artemova L.M. – Senior Researcher, Alexandrov Research Institute of Technoloqy.
Korotaev V.G. – Lead Engineer, Alexandrov Research Institute of Technoloqy.
Kuznetsov A.N. – Head of Group, Senior Researcher, Alexandrov Research Institute of Technoloqy. Contacts: 72, Koporskoe shosse, Sosnovy Bor, Leningrad region, Russia, 188540. Tel.: +7 (813) 696-08-83; e-mail:
This paper presents the results of “Benchmark Rostov 2” test task simulation using
SAPFIR_95&RC_VVER program package; the test task is based on a full-scale experiment performed at the Rostov NPP, where the transition mode with boric acid dilution and a working group insertion to compensate the reactivity were implemented. The purpose of this task is to develop the methods of non-stationary computation of pin-by-pin power energy distribution in calculation programs for neutronic and thermohydraulic characteristics of VVER-type reactors.
The SAPFIR_95&RC_VVER program package uses two calculation methods of pin-by-pin power energy distribution: micro- and macro-flux superposition method and combined fine-grid method, where the nodes of radial computational grid in the reactor core coincide with the centers of fuel elements in fuel rod assembly. The combined fine-grid method for calculating pin-by-pin power energy distribution is carried out with the known values of burn-up distributions, fuel temperature, and coolant density obtained from superposition method. Both approaches are used for solving stationary and non-stationary tasks. When simulating the non-stationary processes, the test task can be solved in conjunction with KORSAR thermohydraulic code.
This paper describes neutronic models of VVER-1000 reactor core used in “Benchmark Rostov 2” test task for superposition method and combined method. Calculation results for power energy distri-bution fields are given.
pin-by-pin power energy distribution, fine-grid computation, superposition method, dynamic calculation, coupled neutronic and thermohydraulic calculation
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2. Artemov V.G., Ivanov A.S., Kuznetsov A.N., Shemaev Yu.P. Kombinirovannyy metod rascheta potvel'nogo energovydeleniya v komplekse programm SAPFIR_95&RC_VVER [The combined method of calculating fuel energy release in the software package SAPFIR_95 & RC_VVER]. Voprosy Atomnoy Nauki i Tekhniki. Seriya: Yaderno-reaktornye konstanty – Problems of Atomic Science and Technology. Series: Nuclear and Reactor Constans, 2014, no. 3, pp. 85–89.
3. SAPFIR_95&RC_VVER.2. Certification passport of software tool No. 321 - Federal Service for Ecological, Technological and Nuclear Supervision, 09/23/2009, 04/18/2013.
4. The program complex KORSAR / GP. Certification passport PS No. 263. – Federal Service for Ecological, Technological and Nuclear Supervision, 09/23/2009.
5. Avramova M., Denisenko A., Denisova M., Gordienko P., Ivanov K., Nikonov S., Pasichnyk I., Shumskiy B., Sizov R., Velkov K. EGMPEPV BENCHMARK “ROSTOV-2”. Proc. 27th Symposium of AER on VVER Reactor Physics and Reactor Safety. Germany, Munich, 2017.