Additive Effective Dose Rates during Chemical Processing of Natural Minerals
- Authors: Abdel-Razek Y.A.1, Desouky O.A.1, Elshenawy A.A.1, Nasr A.S.1, Mohmmed H.S.2, Elsayed A.A.2
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Affiliations:
- Nuclear Materials Authority
- Department of Biophysics, Faculty of Science
- Issue: Vol 61, No 3 (2019)
- Pages: 373-380
- Section: Article
- URL: https://journals.rcsi.science/1066-3622/article/view/225198
- DOI: https://doi.org/10.1134/S1066362219030135
- ID: 225198
Cite item
Abstract
Occupational exposures to radiation during chemical treatment of black sand minerals (ilmenite, zircon, monazite, rutile) were evaluated. Additive effective dose rate (AEDR) is a new measure introduced to control the occupational exposure to radiation. The value of AEDR from the external γ-rays was estimated at 1.06 × 10–9 Sv h–1 kBq–1. Based on the dose conversion coefficients obtained by the previous epidemiological studies, AEDR from radon and thoron gases was found to be 2.7 × 10–9 and 1.52 × 10–9 Sv h–1 kBq–1, respectively. The batch effective dose (BED) was suggested as a real alternative to the average effective doses over different locations. It is concluded that 1 kBq of a natural radioactive mineral adds an occupational effective dose of 9.52 × 10–5 Sv year–1.
About the authors
Y. A. Abdel-Razek
Nuclear Materials Authority
Author for correspondence.
Email: ya_sien@hotmail.com
Egypt, Elmaadi, Cairo
O. A. Desouky
Nuclear Materials Authority
Email: ya_sien@hotmail.com
Egypt, Elmaadi, Cairo
A. A. Elshenawy
Nuclear Materials Authority
Email: ya_sien@hotmail.com
Egypt, Elmaadi, Cairo
A. S. Nasr
Nuclear Materials Authority
Email: ya_sien@hotmail.com
Egypt, Elmaadi, Cairo
H. S. Mohmmed
Department of Biophysics, Faculty of Science
Email: ya_sien@hotmail.com
Egypt, Giza
A. A. Elsayed
Department of Biophysics, Faculty of Science
Email: ya_sien@hotmail.com
Egypt, Giza