• 제목/요약/키워드: radionuclides

검색결과 596건 처리시간 0.031초

Long term activity measurement of the primary circuit water on the LVR-15 research reactor

  • Ladislav Viererbl;Vit Klupak;Hana Assmann Vratislavska
    • Nuclear Engineering and Technology
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    • 제56권4호
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    • pp.1250-1253
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    • 2024

  • Activity measurement of the primary circuit water of fission reactors is one method that can provide early detection of a damaged fuel assembly in the reactor core. This is an important aspect in the safe operation of the reactor and for radiation protection of staff. Radionuclides in the primary circuit water are produced by the activation of stable nuclides and the fission of fissile nuclides, mainly the isotope 235U. In the LVR-15 research reactor, measurement of the activity of the primary circuit water has been regularly undertaken since 1996. A water sample is taken from the primary circuit every week and the activities are measured four days later using gamma spectrometry. The results of these long-term measurements from 1996 to 2022 are presented. The activity time dependences of the individual radionuclides are discussed in relation to fuel assembly damage and for events connected to contamination of the water by objects inserted into the primary circuit during experiments carried out near the reactor core.

  • https://doi.org/10.1016/j.net.2023.11.028 인용 PDF