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Radiation Protection Dosimetry 2004 109(3):253-256; doi:10.1093/rpd/nch045
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Radiation Protection Dosimetry Vol. 109 No. 3 © Oxford University Press 2004; all rights reserved

Technical Note

The evaluation of parameters affecting accidents in companies using industrial radioactive sources in Iran

M. R. Deevband1, M. Ghiassi-Nejad1,2,*, S. Borhan-Azad1 and M. B. Tavakoli3

1 National Radiation Protection Department, Iranian Nuclear Regulatory Authority, P.O. Box 14155-4494, Tehran, Iran
2 Department of Biophysics, Tarbiat Modarres University, P.O. Box 14155-6446, Tehran, Iran
3 Department of Medical physics, Esfahan University, P.O. Box 81745-313, Esfahan, Iran

* Corresponding author: ghiassi{at}mailcity.com

More than 1000 radiation workers are engaged in about 70 private industrial radiography companies (IRCs) using 312 mobile gamma radiography devices (GRDs) in Iran. These companies mainly carry out radiography in open areas using 192Ir radioactive sources, ranging from 0.07 to 3 TBq (2–80 Ci). The radiation accidents that occurred in these companies led to acute radiation syndrome in 13 workers and overexposure of 36 workers since 1998. The facilities and operating procedures of the Iranian private IRCs have been investigated during the past 5 y. According to this study, in spite of the fact that most of the accidents were found to be due to the failure of critical components of GRDs, the main parameters affecting overexposures and deterministic effects were found to be incorrect or there was insufficient implementation of the monitoring programme, training and local rules in the IRCs.


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