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Work Place Assessment of Ambient Background Gamma Exposure Level of Some Radiological Facilities in FCT Abuja, Nigeria |
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PP: 27- 32 |
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doi:10.18576/jrna/070305
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Author(s) |
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Idris M. Mustapha,
Arogundade U. Fanny,
Musa Adamu,
Sulayman M. Bello,
Ismail W. Oaniyi,
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Abstract |
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| In this study, the indoor and outdoor background exposure levels of some radiological facilities in FCT Abuja metropolis, Nigeria were assessed. Rados (RDS-31) radiation survey meter was used to measure the indoor and oudoor exposure level. A total of five radiological facilities were systematically selected and recruited for this study. The indoor measurements comprise of examination room when X-ray machine is ON, control console room and patient waiting area. The outdoor background measurement was carried out in the surroundings of the hospital visited. The indoor (outdoor) exposure rate, absored dose rate, annual effective dose equivalent and excess lifetime cancer risk are 0.12 to 4.65 μSv〖.hr〗^(-1) (0.11 to 0.15 μSv.hr^(-1)), 143.3 to 1653 nGy.hr-1 (130 to 140 nGy.hr-1), 0.66 to 8.11 mSv.yr-1 (0.16 to 1.17 mSv.yr-1), and 2.46 to 28.38 (0.56 to 0.60) respectively. These values are within the standard recommended by ICRP and UNSCEAR. However, regular radiation monitoring is required as part of radiation safety culture in the radiological facilities.
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