Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Study of atmosphere parameters of the IVV-2M reactor hall

  • M.E. Vasyanovich (Institute of Industrial Ecology UB RAS) ;
  • M.V. Zhukovsky (Institute of Industrial Ecology UB RAS) ;
  • E.I. Nazarov (Institute of Industrial Ecology UB RAS) ;
  • I.M. Russkikh (Research Institute of Nuclear Materials)
  • Received : 2022.12.12
  • Accepted : 2023.07.05
  • Published : 2023.11.25
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Abstract

The paper presents the results of a study of radioactive noble gases and from decay products in the atmosphere of the reactor hall of the research nuclear reactor IVV-2M. The distribution of short-lived 88Rb and 138Cs activity by sizes of aerosol particles was measured in the range of 0.5-1000 nm. It is shown that radioactive aerosols are characterized by three main modes with AMTD 2-3 nm, 7-15 nm and 400 nm. About 70% of aerosol activity is due to 88Rb. The equilibrium factor between 88Kr and 88Rb is 0.2 ± 0.1. The total concentration of aerosols particles was measured using an aerosol diffusion spectrometer. The value of unattached fraction of radioactive aerosols in the atmosphere of reactor hall IVV2M was f = 0.15-0.25 at the average total aerosol particles concentration from 20,000 cm3 to 53,000 cm3.

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References

  1. The 2007 recommendations of the international commission on radiological protection. ICRP publication 103, Ann. ICRP 37 (2-4) (2007). ICRP.
  2. M.D. Dorrian, Particle size distributions of radioactive aerosols in workplaces, Radiat. Protect. Dosim. 2 (60) (1995) 119-133.
  3. M.E. Vasyanovich, A.V. Vasilyev, A.A. Ekidin, I.A. Kapustin, A.I. Kryshev, Special monitoring results for determination of radionuclide composition of Russian NPP atmospheric releases, Nucl. Eng. Technol. 51 (2019) 1176-1179.
  4. ICRP, Occupational Intakes of Radionuclides: Part 3, ICRP vol. 46, ICRP Publication 137, Ann, 2017, 3/4.
  5. J. Porstendorfer, T.T. Mercer, Influence of electric charge and humidity upon the diffusion coefficient of radon decay products, Health Phys. 37 (1979) 191-199.
  6. J. Porstendorfer, A. Reineking, Κ.H. Becker, Free fractions, attachment rates, and plate-out rates of radon daughters in houses, in: P.K. Hopke (Ed.), Radon and its Decay Products. Occurrence, Properties, and Health Effects, American Chemical Society, 1987, pp. 285-300.
  7. J. Porstendorfer, Properties and behavior of radon and thoron and their decay products in the air, J. Aero. Sci. 25 (1994) 219-263.
  8. I.M. Russkikh, IVV-2M nuclear research reactor, At. Energy 121 (2017) 235-39.
  9. C. Papastefanou, Radioactive aerosols, radioactivity in the environment, a companion series to the, J. Environ. Radioact. 12 (2008) 1-171.
  10. M. Zhukovsky, M. Vasyanovich, A. Onishchenko, A. Vasilyev, Anomalously high unattached fraction of 220Rn decay products in the atmosphere of monazite storage facility, Appl. Radiat. Isot. 151 (2019) 1-6.
  11. M. Zhukovsky, M. Rogozina, A. Suponkina, Size distribution of radon decay products in the range 0.1-10nm, Radiat. Protect. Dosim. 160 (2014) 192-195.
  12. M. Rogozina, M. Zhukovsky, A. Ekidin, M. Vasyanovich, Thoron progeny size distribution in monazite storage facility, Radiat. Protect. Dosim. 162 (2014) 10-13.
  13. M.A. Rogozina, M.V. Zhukovskii, A.A. Ekidin, Interpretation of data from the screen-type diffusion battery with the sequential arrangement of trapping elements, Instrum. Exp. Tech. 56 (6) (2013) 711-713.
  14. V.A. Zagaynov, V.V. Maksimenko, A.A. Lushnikov, I.E. Agranovskii, Y.G. Biryukov, M.E. Vasyanovich, Specific features in measuring particle size distributions in highly disperse aerosol systems, Rus. J. of Physic. 92 (6) (2018) 1201-1207.
  15. M.E. Vasyanovich, A.A. Ekidin, M.V. Zhukovskii, D.V. Markov, I.M. Russkikh, Determination of the size distribution of radioactive aerosols in the IVV-2M reactor room atmosphere, At. Energy 21 (4) (2017) 312-315.
  16. OIR Data Viewer, Electronic annex accompanying the ICRP occupational intake of radionuclides publication series, Version 5.27.9.21, https://www.icrp.org/docs/ICRP%202022%20OIR%20Electronic%20Annex%20Distribution%20Set.zip, 2021.