Abstract
The study of background ionizing radiation exposure close rate and calculated radiological indices in selected waste site in Yenogoa metropolis, Bayelsa State has been carried out using Radalert 100XTM, nuclear Radiation monitor. The two selected sites were partitioned into ten (10) locations respectively. Obtained results showed that at the integrated waste dump (IWD) site, locations IWD7 and IWD8 had the same highest values. Exposure dose rate (ER) 0.030mR/h (1.596msv/h) Absorbed dose rate (ADR) 261.00 nGy/h (0.21msv/h) Annual effective dose equivalent (AEDE), 0.370mSvy-1 and excess life cancer rate (ELCR) of 1.120x10-3 determined Do (mSvly) for lungs and taste were 0.41mSvy-1 and 0.053mSvy-1respectively. At the characterized metal waste (CMW) site, CMW4 location point had the highest value of ER 0.04mR/h, (2.128mSv/h), ADR 348nGy/h (0.348mSv/h), AEDE 0.427mSvy-1 and ELCR 1.500X 10-3, DO (mSvy-1) for Lung and testes were 0.055mSvy-1and 0.070mSvy-1 respectively. The results were discussed and compared with those reported in similar studies and internationally recommended values. The calculated mean obtained for the parameters in both sites were above world average values (WAV) of ER 0.013mR/h(0.692mSv/h), ADR 59.00nGy/h(0.059mSv/h), AEDE 0.070mSly and ELCR 0.290X10-3 according to UNSCEAR.
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