V. K. Shynkarenko, M. M. Talerko
Institute for Safety Problems of Nuclear Power Plants,
NAS of Ukraine, 12, Lysohirska st., Kyiv, 03028, Ukraine
Retrospective studies of the contribution of emissions from the Shelter object to the formation of the radioaerosol situation in the Exclusion Zone before the construction of the New Safe Confinement were conducted. An algorithm for estimating the average volumetric activity of 137Cs in the air depending on the wind direction is proposed based on data on the activity of air filters exposed in the monitoring posts of the ASKRO system. It was established that the predominant contributions to the arrival of radioactive aerosols in each of the six selected settlements in the Exclusion Zone in previous years were made by the winds of the northern group. It was found that the reliable periods of high activity transport did not always coincide with the wind direction from the Chornobyl nuclear power plant. From the absence of reliable correlations between wind speeds and the values of the 137Cs volumetric activity in the air, the same as from the presence of developed vegetation during periods of maximum activity, it was concluded that the wind resuspension processes have an insignificant contribution to the formation of the radioaerosol situation in the territory of the Exclusion Zone. It is assumed that forest fires make the most significant contribution to radioactive air pollution in this area
Keywords: Shelter object, 137Cs volume activity in the air, forest fires.
1. Israel Yu. A. (2006). Radioaktivnoye zagryazneniye prirodnykh sred v rezul’tate avarii na Chernobyl’skoy atomnoy stantsii [Radioactive pollution of natural environments as a result of the accident at the Chornobyl nuclear power plant]. Moscow: Komtechprint Publishing House, 28 p. (in Rus.)
2. Garger E. K. (2008). Vtorichnyy pod’yem radioaktivnogo aerozolya v prizemnom sloye atmosfery [Secondary rise of radioactive aerosol in the surface layer of the atmosphere]. Chornobyl: ISP NPP, 192 p. (in Rus.)
3. Ogorodnikov B. I., Pavlyuchenko N. I., Pazukhin E. M. (2004). Radioaktivnyye aerozoli obyekta “Ukrytiye” (obzor). CH. 2.2. Kontsentratsii radioaktivnykh aerozoley na promploshchadke obyekta “Ukrytiye” [Radioactive aerosols of the Shelter object (review). Part 2.2: Concentrations of radioactive aerosols at the industrial site of the Shelter object]. Preprint of the NAS of Ukraine, ISTC “Shelter”; 04-1. Chornobyl, 44 p. (in Rus.)
4. Bogorad V. I., Lytvynskaya T. V., Shevchenko I. A., Dybach A. M., Slepchenko A. Yu. (2016). [Radiation consequences of the fire in the Exclusion Zone of the Chornobyl nuclear power plant]. Nuclear and Radiation Safety, vol. 1(69), p. 64. (in Rus.)
5. Hao W. M., Bondarenko O. O., Zibtsev S., Hutton D. (2009). Vegetation fires, smoke emissions, and dispersion of radionuclides in the Chernobyl exclusion zone. Developments in Environ. Sci., vol. 8, pp. 265–275.
6. Zibtsev S. V., Goldammer J. G., Robinson S., Borsuk O. A. (2015). Fires in nuclear forests: silent threats to the environment and human security. Unasylva, vol. 66, pp. 40–51.
7. Kashparov V. A., Lundin S. M., Kadygrib A. M., Protsak V. P., Levtchuk S. E., Yoschenko V. I., Kashpur V. A., Talerko M. M. (2000). Forest fires in the territory contaminated as a result of the Chernobyl accident: radioactive aerosol resuspension and exposure of fire-fighters. J. Environm. Radioactivity, vol. 51, pp. 281–298.
8. Kulan A. (2006). Seasonal 7 Be and 137Cs activities in surface air before and after the Chernobyl event. J. Environm. Radioactivity, vol. 90, pp. 140–150.
9. Mardia K. V., Jupp P. E. (2000). Directional Statistics. Chichester: Wiley, 441 p.
10. Shynkarenko V. K., Talerko M. M., Kashpur V. O., Skoryak H. G., Svyrid O. A. (2020). [Radioactive aerosols in the near zone of the Chornobyl nuclear power plant in 2018]. Nuclear Power and the Environment, vol. 1 (16), pp. 57–67. (in Ukr.)
11. Shynkarenko V. K., Kashpur V. O., Skoryak H. G., Kalynovskyi A. K. (2016). [Evaluation of the aerosol radiation situation at the ChNPP industrial site during construction works of the NSC]. Problems of Nuclear Power Plants Safety and of Chornobyl, vol. 27, pp. 58–66. (in Rus.)
12. Shynkarenko V. K., Kashpur V. O., Skoryak H. G., Svyryd O. A. (2019). [New Safe Confinement and radioactive aerosols in the near zone of the Chornobyl nuclear power plant]. Nuclear Power and the Environment, vol. 1 (13), pp. 76–82. (in Ukr.)
If the article is accepted for publication in the journal «Industrial Heat Engineering» the author must sign an agreement on transfer of copyright. The agreement is sent to the postal (original) or e-mail address (scanned copy) of the journal editions.
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License International CC-BY that allows others to share the work with an acknowledgement of the work’s authorship and initial publication in this journal.