Atomic Energy

, Volume 123, Issue 5, pp 339–344 | Cite as

Numerical Modeling of RBMK-1000 Graphite Stack Distortion

  • A. A. Tutnov
  • A. S. Kiselev
  • A. S. Kiselev
  • E. S. Krut’ko
Article
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Engineering and detailed three-dimensional models of the RBMK-1000 graphite stack for modeling of its distortions caused by the appearance of longitudinal cracks in the blocks owing to the nonuniformity of the temperature and fluence distributions are described. As the neutron fluence accumulates and the limit longitudinal deflection of the graphite columns is reached, the graphite stack is repaired by cutting the graphite blocks. The developed models make it possible to evaluate the accumulation of deflection of the columns before and after repairs and the effectiveness of various repair schemes. The developed models are used to calculate the maximum deflection of the stack columns in the No. 1 unit of the Leningradskaya NPP for different operating conditions after repairs.

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References

  1. 1.
    O. Zenkevich, Finite Element Method in Engineering [Russian translation], Mir, Moscow (1975).Google Scholar
  2. 2.
    V. A. Postnov and S. P. Dmitriev, Method of Superelements in the Calculation of Engineering Structures, Sudostroenie, Leningrad (1979).Google Scholar
  3. 3.
    A. S. Kiselev, I. A. Kiselev, and E. S. Krut’ko, “Increasing the efficiency of numerical algorithms implemented in the UZOR-1 software system,” in: Methods and Software for Strength Calculations, NIKIET, Moscow (2009), pp. 72–83.Google Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • A. A. Tutnov
    • 1
  • A. S. Kiselev
    • 1
  • A. S. Kiselev
    • 1
  • E. S. Krut’ko
    • 1
  1. 1.National Research Center Kurchatov InstituteMoscowRussia

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