Dirty bomb radiological simulations: two explosion scenarios using the Rio 2016 Olympic games Athletes’ Village as a model

José Francisco Pereira; José Ubiratan Delgado

doi:10.15392/bjrs.v6i2.345

Authors

José Francisco Pereira Instituto de Radioproteção e Dosimetria - CNEN DIEME
José Ubiratan Delgado Instituto de Radioproteção e Dosimetria LNMRI / IRD / CNEN

DOI:

https://doi.org/10.15392/bjrs.v6i2.345

Keywords:

dirty bomb, US NARAC HotSpot, big event, radiological emergency, terrorist attack.

Abstract

A historic moment in terrorist bombing in the world was the explosion of the twin towers in the USA, starting a new series of attacks. The bombing brought up many concerns for security authorities all over the world. However, no study about this kind of terrorism involving Olympic venues or big events has ever been published considering dirty bombs with radiological material. This study aims to present, using US NARAC HotSpot Code, a procedure that combines two realistic potential scenarios in the event of a terrorist attack involving the explosion of a Radiological Dispersion Device (dirty bomb) that contains two radionuclides, ¹³⁷Cs and ²⁴¹Am, in the Olympic Village. The results are shown in terms of effective dose (E) and deposition of radioactive material in the soil, which will provide security authorities with information for immediate radiological emergency response actions in order to protect the public and emergency first responders. This study considers a scenario with a dirty bomb explosion during the Rio 2016 Olympic Games that hosted 10,500 athletes from 205 different countries in the Olympic Village. For the calculations of this study the HotSpot code was applied, allowing for emergency response teams to predict the environmental impact depending on the radionuclide used, of the Pasquill stability class, according to the different quantities of explosive, the height of the explosion and the distance in meters from the point of the explosion. It was observed that ²⁴¹Am has a higher dose level than ¹³⁷Cs, while the ground deposition of ¹³⁷Cs was higher.

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References

Web site

NAUS, the National Academies and the U.S. Department of Homeland Security, Washington, DC, USA, Radiological attack dirty bombs and other devices. Available at: https://www.dhs.gov/xlibrary/assets/prep_radiological_fact_sheet.pdf, 2004.

Report

IAEA (2005). International Atomic Energy Agency. Protecting people against radiation expo-sure in the event of a radiological attack. ICRP Publication 96. Vienna: IAEA, 2005. 41 p.

IAEA (2003). International Atomic Energy Agency. Categorization of Radioactive sources, IAEA-TECDOC-1344, Vienna: IAEA, 2003. 33p.

HOMANN, S. G., (2011). HotSpot Ver3.01, Health Physics Codes for PC, LLNL, Livermore, CA, USA.

IAEA (2012). International Atomic Energy Agency. Nuclear Security Systems and Measures for Major Public Events. IAEA Nuclear Security Series No. 18, Vienna: IAEA, 2012. 56 p.

IAEA (2003). International Atomic Energy Agency. Method for developing arrangements for response to a nuclear or radiological emergency, IAEA-TECDOC No. 953, Vienna: IAEA, 265 p.

NCRP (2001). National Council on Radiation Protection and Measurement. Management of Ter-rorist Events Involving Radioactive Material. NCRP report No. 138, Bethesda, MD, USA, 2001. 232p.

EPA (1978). Environmental Protection Agency (1978), Guideline on Air Quality Models, OAQPS Guideline Series No. 1.2-080, Report EPA-45012-78-027 (Office of Air Quality Planning and Standards, Research Triangle Park, NC).

SUTTON, O. G. (1932), "A Theory of Eddy Diffusion in the Atmosphere," Proceedings of the Royal Society, Series A, 135, p. 143 (London).

PASQUILL, F. (1961), "The Estimation of Dispersion of Windborne Material," Meteorology, 90, pp. 3349.

PASQUILL, F. (1974), Atmospheric Diffusion, 2nd. ed. (John Wiley & Sons, New York).

GIFFORD, F. A., Jr. (1975), "Atmospheric Dispersion Models for Environmental Pollution Ap-plications," Lectures on Air Pollution and Environment Impact Analyses, pp. 3558 (American Me-teorological Society, Boston, MA).

TURNER, D. B. (revised, 1969), Workbook of Atmospheric Dispersion Estimates (U.S. De-partment of Health, Education, and Welfare, Public Health Service, National Air Pollution Control Administration, Cincinnati, OH).

RENTAI, Y. Atmospheric dispersion of radioactive material in radiological risk assessment and emergency response, Progress in Nuclear Science and Technology, Vol 1, 2011, pp. 7-13.

ICRP (1993). International Commission on Radiological Protection, Publication 66: Human respiratory tract model for radiological protection, Pergamon Press, ISBN 0-08041154-1.

ICRU (1998). International Commission on Radiation Units and Measurements. Fundamental quantities and units for ionizing radiation. ICRU Report 60, Bethesda: ICRU, 1998. 24p.

FERGUSON, C.D., KAZI, T. & PERERA, J. (2003). Commercial radioactive sources, Occa-sional paper no. 11, Center for Nonproliferation Studies, Monterey Institute of International Studies, California 93940, USA, ISBN 1-885350-06-6.

NRC (2009). US Nuclear Regulatory Commission. 10 CFR 20.1003.

NRC (2012). US Nuclear Regulatory Commission. "Total effective dose equivalent". USNRC Glossary. Retrieved 8 May 2012.

ICRP (2005). International Commission on Radiological Protection, Publication 96: Protecting people against radiation exposure in the event of a radiological attack, Annals of the ICRP 35 (1), 1–110.

CONNELL, Len. ICSSRS (2013). International Conference on the Safety and Security of Radi-oactive Sources. Overview of the US NAS Report: Radiation Source Use and Replacement, Abu Dhabi, UAE, 27-31.

IAEA (1996). International Atomic Energy Agency. “International basic safety standards for protection against ionizing radiation and for the safety of radiation sources, Safety Series No.115,” Tech. Rep.,Vienna, Austria.