Abstract
It is shown that the optimal water chemistry of the primary coolant circuit must be substantiated while introducing measures aimed at increasing the power output in operating power units and for the project called AES-2006/AES TOI (a typical optimized project of a nuclear power station with enhanced information support). The experience gained from operation of PWR reactors with an elongated fuel cycle at an increased level of power is analyzed. Conditions under which boron compounds are locally concentrated on the fuel rod surfaces (the hideout phenomenon) and axial offset anomaly occurs are enlisted, and the influence of lithium on the hideout in the pores of deposits on the surfaces of fuel assemblies is shown.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
V. M. Troyanov, P. I. Lavrenyuk, and V. L. Molchanov, “Nuclear Fuel. Present State and Prospects,” in Proceedings of the International Scientific-Technical Conference-2008 “Safety, Efficiency, and Economics of the Nuclear Power Industry,” Moscow, May 21–23, 2008.
Effects of Crud Buildup and Boron Deposition on Power Distribution. NRC Information Notice 97-85. United States Nuclear Regulatory Commission. Office of Nuclear Reactor Regulation. Washington, D.C. 20555-0001, December 11, 1997.
P. Frattini, E. Blandford, D. Hussey, et al., “Modeling Axial Offset Anomaly,” in Proceedings of the International Conference “Water Chemistry of Nuclear Reactor Systems,” San Francisco, October 2004, Paper 7.1.
A. Byers and J. Deshon, “Structure and Chemistry of PWR Crud,” in Proceedings of the International Conference “Water Chemistry of Nuclear Reactor Systems,” San Francisco, October 2004, Paper 7.5.
E. Decassin and A. Tigeras, “Axial Offset Anomaly Feedback on EDF Cores,” in Proceedings of the International Conference on Nuclear Power Chemistry NPC’08, Berlin, September, 2008.
EPRI PWR Primary Water Chemistry Guidelines. Vol. 1, Revision 4, TR-105714-V1R4.
K. Fruzetti and D. Perkins, “PWR Chemistry: EPRI Perspective on Technical Issues and Industry Research,” in Proceedings of the International Conference on Nuclear Power Chemistry NPC’08, Berlin, September, 2008.
P. Cohen, Water Coolant Technology of Power Reactors (Gordon and Breach Science Publishers, New York, 1969).
M. A. Urusova and V. M. Valyashko, “Phase Equilibriums in Hydrothermal Systems Containing Sodium and Potassium Borates,” Ross. Zh. Neorg. Khim. 38, 662–667 (1993).
J. Ösz, T. Salamon, and P. Tilky, “Revision of Primary Water Regime in Nuclear Power Plant Paks,” in Proceedings of the 5th International Seminar on Primary and Secondary Side Water Chemistry of Nuclear Power Plants, Eger, Hungary, September 2001.
V. V. Gerasimov, Corrosion of Reactor Materials (Atomizdat, Moscow, 1980) [in Russian].
A. F. Chabak, “The Influence of Water Chemistry on the Corrosion Behavior of Fuel Assembly Zirconium Claddings in Pressurized-Water Reactors,” in Proceedings of the International Scientific-Technical Meeting “Water Chemistry at Nuclear Power Stations,” Moscow, 2005.
V. F. Tyapkov, S. E. Mal’kov, L. F. Barmin, et al., “An Analysis of Keeping Water Chemistries at Nuclear Power Stations Equipped with VVER Reactors and Main Lines of Improving Them,” in Proceedings of the International Scientific-Technical Meeting “Water Chemistry at Nuclear Power Stations,” Moscow, 2005.
Author information
Authors and Affiliations
Additional information
Original Russian Text © R.B. Sharafutdinov, N.L. Kharitonova, 2011, published in Teploenergetika.
Rights and permissions
About this article
Cite this article
Sharafutdinov, R.B., Kharitonova, N.L. The problem of optimizing the water chemistry used in the primary coolant circuit of a nuclear power station equipped with VVER reactors under the conditions of longer fuel cycle campaigns and increased capacity of power units. Therm. Eng. 58, 383–389 (2011). https://doi.org/10.1134/S0040601511050120
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0040601511050120