Izvestiya vuzov. Yadernaya Energetika

The peer-reviewed scientific and technology journal. ISSN: 0204-3327

Simulation of the radiation situation in nuclear power deployment areas

7/09/2020 2020 - #02 Environmental aspects

Istomina N.Yu. Noskov M.D. Istomin A.D. Bugrina V.S. Popova K.Ye.

DOI: https://doi.org/10.26583/npe.2020.2.09

UDC: 504.05:621.039.7

The use of geoinformation and expert simulation systems to assess the environmental effects from operation of nuclear power installations is discussed. The structure and the functions of the ARIA geoinformation and expert simulation software package are described. ARIA features functional capabilities for building and visualizing digital models of the locality, hazardous installations, and recipient facilities, simulating and visualizing the radiation situation, and analyzing the radiation situation in terms of the activity and dose rate levels for recipient facilities of various geometries. The system makes it possible to calculate spatial distributions of the radionuclide specific activity, the dose and the dose rate as defined by the external and internal pathways for the ionizing radiation impacts.

The paper presents the results of using the ARIA software package to calculate the radiation situation with the entry of radionuclides into the surface air layer during normal and emergency operating modes of nuclear power installations. In the former case, the radiation situation was calculated for the Kalinin NPP deployment area. In the latter case, the consequences from a series of short-term emergency releases in the wake of the Fukushima Daiichi accident in Japan in 2011 were assessed.

The contribution of long- and short-lived radionuclides to the formation of the radiation background in the event of an emergency release and during normal NPP operation is discussed. Inhalation dose is the most important factor defining the dose rates for the personnel and the public at the early accident stage. That at the later accident stage, both during an accident and during normal NPP operation, is the dose caused by the radiation from the long-lived radionuclides in the surface soil layer. It has been shown that the individual equivalent dose in the Kalinin NPP deployment area is four orders of magnitude as low as the annual dose threshold value set by the radiation safety standards.

References

  1. International Basic Safety Standards for Protection Against Ionizing Radiation and for the Safety of Radiation Sources. Safety Series No 115, IAEA, Vienna, 1996. Available at: https://gnssn.iaea.org/Superseded%20Safety%20Standards/ Safety_Series_115_1996_Pub996_EN.pdf/ (accessed Mar 20, 2020).
  2. Intervention Criteria in a Nuclear or Radiation Emergency. Safety Series No 109, IAEA, Vienna, 1994. Available at: https://gnssn.iaea.org/Superseded%20Safety%20Standards/ Safety_Series_109_1994.pdf/ (accessed Mar 20, 2020).
  3. Criteria for Use in Preparedness and Response for a Nuclear or Radiological Emergency, General Safety Guide. Safety Standarts Series No GSG2, IAEA, Vienna, 1994. Available at: https://www-pub.iaea.org/MTCD/publications/PDF/Pub1467_web.pdf/ (accessed Mar 20, 2020).
  4. Bashlykov A.A, Britkov V.В., Vyazilov E.D., Gelovani V.F. Intelligent decision support systems in emergency situations using information on the state of the environment. Moscow. Editorial URSS Publ., 2001 (in Russian).
  5. Noskov M.D., Istomin A.D., Istomina N.Yu., Cheglokov A.A. Geoinformation expert- modeling complex ARIA to evaluate effluents consequences of radioactive substances into the atmosphere. Certificate for the State Registration of the Computer Program No 2011613014, 14.04.2011 (in Russian).
  6. Zhiganov A.N., Istomina N.Yu., Noskov M.D. Modeling of consequences of radioactive substances effluent into the atmosphere. Izvestiya vuzov. Physics. 2000, v. 43, no 4, pp. 100-104 (in Russian).
  7. Gusev N.G., Belyaev V.A. Radioactive Release in the Biosphere: Handbook. Moscow. Energoatomizdat Publ., 1991, 224 p. (in Russian).
  8. NRB-992009 Standards of radiation security: Sanitary Rules and Standards. Moscow. Information-publishing Centre of Goskomsanepidnadzor Publ., 2009, 234 p. (in Russian).
  9. Harutyunyan R.V., Bolshov L.A., Kiselev A.E., Krasnoperov S.N., Pavlovsky O.A., Panchenko S.V., Pripachkin D.A., Strizhov V.F.. Operational analysis of the accident at the Fukushima-1 NPP (Japan) and forecasting its consequences. Atomnaya Energiya. 2012, v. 112, no 3, pp. 151-159; DOI: https://doi.org/10.1007/s10512-012-9540-7 (in Russian).
  10. Harutyunyan R.V., Bolshov L.A., Borovoi A.A., Velikhov E.P. System analysis of causes and consequences of the Fukushima1 NPP accident. Moscow Nuclear Safety Institute of RAS Publ., 2018. Available at: http://www.ibrae.ac.ru/docs/Monografii/velikhov_web.pdf/ (accessed Mar 20, 2020) (in Russian).
  11. The accident at the Fukushima Daiichi nuclear power plant. CEO Report. IAEA, Vienna, 2015. Available at: https://www-pub.iaea.org/MTCD/Publications/PDF/SupplementaryMate-rials/P1710/ Languages/Russian.pdf/ (accessed Mar 20, 2020) (in Russian).
  12. The Fukushima Daiichi Accident. IAEA, Vienna, 2015, Vol. 4 : Radiological Consequences. 262 p. Available at: https://www-pub.iaea.org/MTCD/Publications/PDF/ Addi-tionalVolumes/P1710/Pub1710-TV4-Web.pdf/ (accessed Mar 20, 2020).
  13. Map of the Tver Region. Available at: http://openstreet-map.ru/#map=16/56.8417/ 61.3167&q=Тверская область&qmap=/ (accessed Mar 20, 2020) (in Russian).
  14. SP 131.13330.2018. Construction Climatology. Updated edition of SNiP 23-01-99*). Date of introduction 2019-05-29. Available at: http://sniprf.ru/sp131-13330-2018/ (accessed Mar 20, 2020) (in Russuan).
  15. 2018 Kalininskaya NPP Environmental Safety Report. Available at: https:// www.rosenergoatom.ru/upload/iblock/922/92289881c70e1cbb3b2734745f70a720.pdf/ (accessed Mar 20, 2020) (in Russian).

prediction radiation situation atmospheric release mathematical simulation support of decision-making geoinformation system nuclear power