ASSESSMENT OF RADIATION DOSE RATE LEVELS IN SELECTED MECHANIC WORKSHOPS IN ABUJA, NORTH CENTRAL NIGERIA.
Abstract
Environmental radiation measurement was carried out in several mechanic workshops in four (4) local area councils in Abuja. A universal survey meter RDS-200 was used to ascertain the level of radiation to which these workers are daily exposed. The study revealed that the dose equivalent rate varied from 0.088±0.028 μSv/h to 0.149±0.034 μSv/h with a mean dose of 0.109±0.029 μSv/h. This work also revealed that the dose rate at the various mechanic workshops is essentially from natural background radiation. The results also show that the radiation dose rate from all the mechanic workshops did not exceed the maximum permissible limit of 1mSvy-1 recommended for the public and non-nuclear industrial environment by the International Commission on Radiological Protection ICRP [2007]. The cancer risk and hereditary effects to the adult workers were also estimated.