Nuclear Physics and Atomic Energy

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

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Nucl. Phys. At. Energy 2022, volume 23, issue 4, pages 234-244.
Section: Atomic Energy.
Received: 17.10.2022; Accepted: 30.12.2022; Published online: 6.02.2023.
PDF Full text (en)

Assessment of the dose load during the dismantling of the WWR-M reactor

Yu. M. Lobach1,*, S. Yu. Lobach2, E. D. Luferenko1, V. M. Shevel1

1 Institute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, Ukraine
2 Nuclear and Industrial Engineering (N.IN.E.) S.R.L., Lucca, Italy

*Corresponding author. E-mail address:

Abstract: The WWR-M is a light-water-cooled and moderated heterogeneous research reactor with a thermal output of 10 MW. The final decommissioning planning is in progress now. The general decommissioning strategy consists of the dismantling and separate removal of the bulky elements as a whole (in one piece) without preliminary segmentation. The dismantling of the primary and secondary cooling loops is considered as one of the key tasks; a separate dismantling design has been developed. The baseline principles for the technical solution and safety are presented in the given paper. Results of the dose assessment showed that the work can be performed at a collective dose of less than 20 man-mSv.

Keywords: WWR type research reactor, decommissioning, cooling loops, dismantling, exposure dose.


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