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Assessment of Indoor and Outdoor Radiation Exposure in Nasarawa General Hospital, Nasarawa State, Nigeria |
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PP: 239-243 |
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doi:10.18576/jrna/060308
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Author(s) |
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U. Rilwan,
A.U. Maisalatee,
A.U. Maisalatee,
M. Jafar,
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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 Nasarawa, 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 0.011 mSv/y (indoor) at LR (Laboratory Room)
and 0.03 mSv/y (outdoor) at RR (Record Room) and LR (Laboratory Rom) to 0.36 mSv/y (indoor) at EA (Accident and
Emergency) and 0.09 mSv/y (outdoor) at EA (Accident and Emergency) with an average value of 0.19 mSv/y and 0.05
mSv/y for indoor and outdoor respectively. The evaluated results for indoor and outdoor excess lifetime cancer risk at
different offices of the Nasarawa general hospital. The mean indoor and outdoor excess lifetime cancer risk varies from
0.39 × 10-3
(indoor) at LR (Laboratory Room) and 0.11 × 10-3
(outdoor) at RR (Record Room) and LR (Laboratory Rom)
to 1.26 × 10-3
(indoor) at EA (Accident and Emergency) and 0.32 × 10-3
(outdoor) at EA (Accident and Emergency) with
an average value of 0.67 × 10-3
and 0.18 × 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 Nasarawa is radiologically safe. |
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