Background radiation dose of dumpsites in Ota and Environs

2017 International Conference on Space Science and Communication

物理学;无线电电子学

Usikalu, M.R.^1 ; Ola, O.O.^1 ; Achuka, J.A.^1 ; Babarimisa, I.O.^1 ; Ayara, W.A.^1

Department of Physics, Covenant University, PMB 1024, Ota, Ogun State, Nigeria^1

关键词: Background radiation;    Equivalent dose;    Estimated parameter;    General publics;    In-situ measurement;    Nuclear radiations;    Radiation burden;    Regulatory authorities;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/852/1/012045/pdf
DOI  :  10.1088/1742-6596/852/1/012045

来源: IOP

【 摘 要 】

In-situ measurement of background radiation dose from selected dumpsites in Ota and its environs was done using Radialert Nuclear Radiation Monitor (Digilert 200). Ten measurements were taken from each dumpsite. The measured background radiation range between 0.015 mRhr-1for AOD and 0.028 mRhr-1for SUS dumpsites. The calculated annual equivalent doses vary between 1.31 mSvyr-1for AOD and 2.28 mSv/yr for SUS dumpsites. The air absorbed dose calculated ranged from 150 nGyhr-1to 280 nGy/hr for AOD and SUS dumpsites respectively with an average value of 217 nGyhr-1for all the locations. All the estimated parameters were higher than permissible limit set for background radiation for the general public. Conclusively, the associated challenge and radiation burden posed by the wastes on the studied locations and scavengers is high. Therefore, there is need by the regulatory authorities to look into the way and how waste can be properly managed so as to alleviate the effects on the populace leaving and working in the dumpsites vicinity.