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Background Radiation Exposure in Keffi General Hospital, Keffi, Nasarawa State, Nigeria |
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PP: 79-83 |
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doi:10.18576/jrna/070109
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Author(s) |
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U. Rilwan,
O.O. Galadima,
I. Yahaya,
A.M. Rufai,
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Abstract |
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| Radiation has been found to be beneficial on one hand and harmful on the other hand and is encountered in
everyday activities in various forms and different intensities. Some of the harmful effects are: cancer, cataract, gene
mutation destruction of bones and blood cells and it can cause the death of an individual This work therefore aimed at
investigating the indoor and outdoor background radiation General Hospital Keffi, Nasarawa State, Nigeria using a hand
held Inspector Alert Nuclear Radiation Monitor. A total of 10 offices were surveyed and the results obtained showed that
the mean indoor and outdoor annual effective dose rate varies from 0.08 mSv/y and 0.02 mSv/y (indoor and outdoor) at LR
to 0.3 mSv/y and 0.08 mSv/y (indoor and outdoor) at AER with an average value of 0.17 mSv/y and 0.04 mSv/y for indoor
and outdoor respectively. The evaluated results for indoor and outdoor excess lifetime cancer risk at different offices of the
Keffi general hospital. The mean indoor and outdoor excess lifetime cancer risk varies from 0.28 × 10-3
and 0.07 × 10-3
(indoor and outdoor) at LR to 1.16 × 10-3
and 0.28 × 10-3
(indoor and outdoor) at AER with an average value of 0.60 × 10-3
and 0.14 × 10-3
for indoor and outdoor respectively. Base on the aforementioned findings, it was deduced that radiation
levels are within the permissible radiation limit as stipulated by the ICRP and UNSCEAR of 2.4 mSv/yr and thus, general
Hospital Keffi is radiologically safe. |
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