Nuclear Physics and Atomic Energy

ядерна ф≥зика та енергетика
Nuclear Physics and Atomic Energy

  ISSN: 1818-331X (Print), 2074-0565 (Online)
  Publisher: Institute for Nuclear Research of the National Academy of Sciences of Ukraine
  Languages: Ukrainian, English
  Periodicity: 4 times per year

  Open access peer reviewed journal

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Nucl. Phys. At. Energy 2021, volume 22, issue 1, pages 42-47.
Section: Atomic Energy.
Received: 08.07.2020; Accepted: 02.04.2021; Published online: 19.06.2021.
PDF Full text (ua)

Uncertainty determination of fast neutron fluence onto the WWER pressure vessel metal surveillance specimens

ќ. M. Pugach*, S. M. Pugach, V. L. Diemokhin, V. N. Bukanov, O. V. Grytsenko

Institute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, Ukraine

*Corresponding author. E-mail address:

Abstract: The standard surveillance programs of WWER reactors do not allow to measure the surveillance specimens irradiation conditions with the required accuracy. Therefore, the special methodology for the determination of the surveillance specimens irradiation conditions of the reactor pressure vessel metal has been developed by the specialists of the INR of NASU and is successfully applied. The developed methodology bases on the use of the Monte-Carlo code for neutron transport calculations to the surveillance specimens locations. The methodology improvement is described. The fundamentals of the calculation-experimental determination of the fast neutron fluences onto surveillance specimens and their uncertainties are presented.

Keywords: fast neutron fluence, uncertainty, surveillance specimens, WWER, the program of neutron transport calculation.


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