Assessment of Radiation Emission Levels in Industrial Sites of Ibadan Metropolis Nigeria

The increase in population of major cities in Nigeria has caused proliferation of industries around them especially Ibadan. Hence, the rate and the volume of the waste generated equally increases. This can be a source of environmental health hazard and possible radiation emission from each industrial site to the workers and close residential areas calls for a concern. Hence, the aim of this study is to assess radiation emission levels in industrial sites of Ibadan metropolis. The industrial sites are mainly located in Oluyole L.G.A of Ibadan. A portable radiation survey meter RDS-30 with serial number 270354 was used to quantify the exposure levels in the industrial sites. The absorbed dose rates were determined at 10 different industries of the study area. The highest stable point was observed while radiation survey meter was placed at the level of Gonad at 1metre above the ground level. The procedure was repeated three times at the same point in the industrial site. An average mean value and standard deviation were determined for each of the locations. Radiological hazard indices were calculated from the data obtained. The mean background reading was 0.09uSvh-1. The mean equivalent dose was 0.14 uSvh-1, the mean absorbed doe rate (ADR) was 142nGyh-1. The calculated annual exposure dose rate (AEDR) was 0.17mSvy-1. The corresponding estimated ECLR was 0.60X10-3. However, from the result of the study, it was observed that proper and continuous evaluation of dose level should be maintained to avoid any possible health effect of radiation