Additive Effective Dose Rates during Chemical Processing of Natural Minerals


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Аннотация

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.

Авторлар туралы

Y. Abdel-Razek

Nuclear Materials Authority

Хат алмасуға жауапты Автор.
Email: ya_sien@hotmail.com
Египет, Elmaadi, Cairo

O. Desouky

Nuclear Materials Authority

Email: ya_sien@hotmail.com
Египет, Elmaadi, Cairo

A. Elshenawy

Nuclear Materials Authority

Email: ya_sien@hotmail.com
Египет, Elmaadi, Cairo

A. Nasr

Nuclear Materials Authority

Email: ya_sien@hotmail.com
Египет, Elmaadi, Cairo

H. Mohmmed

Department of Biophysics, Faculty of Science

Email: ya_sien@hotmail.com
Египет, Giza

A. Elsayed

Department of Biophysics, Faculty of Science

Email: ya_sien@hotmail.com
Египет, Giza

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