Problems of radiation safety during mass events: comparative analysis of domestic and foreign experience

Ensuring radiation safety during international mass events is a complex state task that affects not only the health of participants, but also the reputation of the host country. An analysis of the literature confirms the continuing risks of radiation terrorism, the most likely scenario of which is the use of a dirty bomb. The purpose of the study is to systematize and classify the problems of radiation safety based on a comparative analysis of domestic and foreign experience. Materials and Methods: Official reports of the Olympic Games organizers (London, 2012; Sochi, 2014), the Pan American Games (2007), the Universiade (Kazan, 2013), the FIFA World Cup (2018), the IAEA guidelines and analytical publications. Results and Discussion: A classification of problems has been developed, including organizational and managerial (underestimation of requirements at the design stage), technical (false alarms of sensors) and interdepartmental (inconsistency of actions) categories. The positive dynamics of interagency cooperation in Russia has been revealed: from the scattered actions in Kazan to the multi-level security structures in Sochi and at the 2018 World Cup. It has been established that the main objects of operation of radiation monitoring systems are cargoes with natural radionuclides and patients after medical procedures, which requires different response algorithms. Conclusion: The proposed classification serves as a scientific and methodological basis for creating universal requirements for radiation monitoring at mass events. The research prospects are related to the development of standard control schemes for different facilities.

1. Onishchenko GG, Kuzkin BP, Ezhlova EB, Smolensky VY, Demina YuV, Pakskina ND, et al. XXVII World Summer Universiade 2013 in Kazan: ensuring sanitary and epidemiological well-being. Tver; 2013. 528 p. (In Russian). Onishchenko GG, Popova AYu, Kuzkin BP, Bragina IV, Ezhlova EB, Demina YuV. XXII Olympic Winter Games and XI Paralympic Winter Games 2014 in Sochi. Sanitary and epidemiological welfare provision. Ed. by GG Onishchenko, AN Kulichenko. Tver: LLC «Publishing «Triada»; 2015. 576 p. (In Russian).

2. Romanovich IK, Barkovsky AN, Titov NV, Shevchenko GT. Ensuring radiation safety and countering radiation terrorism during mass sports events. Ed. by GG Onischenko, AYu Popova. St-Petersburg: RIRH after Prof. P.V. Ramzaev; 2016. 364 p. (In Russian).

3. RIO DE JANEIRO 2007 PAN AMERICAN GAMES | Event-able. Available from: https://event-able.org/event/2007-panamerican-games#:~:text=Venues:,28%20criminal%20data %20banks%20interconnected [Accessed 02.04.2026].

4. The organizers of the 2012 Olympics sold 8.25 million tickets. Available from: https://www.sportsdaily.ru/news/organizator yi-olimpiadyi-2012-prodali-8-25-milliona-biletov-137084/ [Accessed 02.04.2026].

5. The 10th anniversary of the 27th World Summer Universiade in Kazan. Available from: https://postpredrb.tatarstan.ru/ind ex.htm/news/2197369.htm [Accessed 02.04.2026].

6. More than 1.4 million people attended the Olympics. Available from: https://www.metronews.ru/novosti/reviews/olimpiadu -posetili-bolee-1-4-mln-chelovek-1140617/ [Accessed 02.04.2026].

7. million spectators and 100% of Moscow. Everything about the 2018 FIFA World Cup attendance. Available from: https://www.s-bc.ru/articles/wc2018-attendance-review [Accessed 02.04.2026].

8. IAEA. Nuclear security systems and measures for major public events: implementing guide. Vienna: IAEA; 2012. 67 p. National Consortium for the Study of Terrorism and Responses to Terrorism (START). Global terrorism database. Available from: http://www.start.umd.edu/gtd/ [Accessed 31.03.2026].

9. Grachev MI, Ilin LA, Kvacheva YuYe, Kriminskiy AA, Salenko YuA, Samoylov AS, et al. Medical Aspects of Counteracting Radiological and Nuclear Terrorism. Ed. by LA Ilyin. Moscow: FMBTS A.I. Burnazyana; 2018. 392 p. (In Russian).

10. Ilyin LA. Radiological and nuclear terrorism medicalbiological and hygienic problems. Gigiena i Sanitaria = Hygiene and Sanitation. 2017;96(9): 809-812. (In Russian). DOI: 10.18821/0016-9900-2017-96-9-809-812.

11. IAEA. Lessons learned from the response to radiation emergencies (1945–2010). Vienna: IAEA; 2012. 175 p.

12. Jeong Hy, Park M, Jeong Ha, Hwang W, Kim E, Han M. Radiological risk assessment caused by RDD terrorism in an urban area. Applied Radiation Isotopes. 2013;79(2): 1-4.

13. IAEA. Nuclear security measures at the XV Pan American games: Rio de Janeiro 2007, Information Report. Vienna, IAEA; 2009.

14. James M, Ryden C. Radiation Screening at the London 2012 Olympics. 2013 IEEE Nuclear Science Symposium and Medical Imaging Conference. DOI: 10.1109/nssmic.2013.6829436.

15. London 2012. Olympic Games. Official Report. 2012;1: 75. London 2012. Olympic Games. Official Report. 2012;2: 59. Rylov MI, Tikhonov MN. Nuclear and radiological terrorism and security issues in the modern world. Problemy analiza riska = Issues of risk analysis. 2015;1: 32-51. (In Russian).

16. Saprykin KA. The use of man-made sources of ionizing radiation to ensure safety during the 2018 FIFA World Cup. Current issues of radiation hygiene: Proceedings of the International Scientific and Practical conference, St. Petersburg, October 23-24, 2018. St. Petersburg: RIRH after Prof. P.V. Ramzaev; 2018. P. 240-241. (In Russian).

17. Saprykin KA. Ensuring radiation safety at the stages of preparation and holding of the 2018 FIFA World Cup. Current issues of radiation hygiene: Proceedings of the International Scientific and Practical Conference, St. Petersburg, October 23-24, 2018. St. Petersburg: RIRH after Prof. P.V. Ramzaev; 2018. P. 241-243. (In Russian).

18. Saprykin KA, Gromov AV, Ivanov SA. Ensuring radiation safety at the FIFA World Cup 2018. Radiatsionnaya Gygiena = Radiation Hygiene. 2019;12(3): 106-113. (In Russian) DOI: 10.21514/1998-426X-2019-12-3-106-113.

19. Saprykin K.A. Experience of using radiation monitoring systems in Russia during the 2018 FIFA World Cup. Radiatsionnaya Gygiena = Radiation Hygiene. 2022;15(1): 104-110. (In Russian). DOI: 10.21514/1998-426X-2022-151-104-110.

20. Popova AYu, Smolensky VYu, Bragina IV, Kuzkin BP, Ezhlova EB, Demina YuV, et al. 2018 FIFA World Cup in Russia: ensuring sanitary and epidemiological well-being. Ed. by AYu Popova, VV Kutyrev. Saratov: Russian Research Anti-Plague Institute Microbe; 2019. 536 p. (In Russian).