International Journal of Radiation Research

en Assessment of occupational exposure to radon-222 in water treatment and production plants in Ogbomoso, South-western, Nigeria Radiation Biology Radiation Biology تحقيق بديع Original Research <div style="text-align: justify;">Background: The transfer of dissolved radionuclide in water into the indoor air is one of the major pathways for radon-222 (222Rn). In water treatment and production plants (WTPPs), there is a risk that radon degasses from the water and enters into the indoor air. Hence, this study assessed different WTPPs to determine the amount of 222Rn workers are exposed to as a result of their occupation. Materials and Methods: An Electret Passive Environmental Radon Monitor (E-PERM®) device was used to investigate the indoor radon levels in the processing, packaging, and storage rooms of five (5) well-known and active WTPPs in Ogbomoso, Nigeria, and descriptive statistics was used for the analysis of data obtained. Results: The radon concentration obtained varies between 44 - 149 Bq/m3 with an average of 69.28 ± 20.06 Bq/m3 in the processing rooms, 27 – 44 Bq/m3 with an average of 36.02 ± 4.05 Bq/m3  in the packaging rooms and 34 – 144 Bq/m3 with an average of 71.15 ± 42.81 Bq/m3 in the storage rooms. The average annual effective dose obtained for each of the WTPPs varies between 1.00 mSvy-1 and 2.00 mSvy-1. Conclusion: The results showed that all the investigated WTPPs had high radon concentration and annual effective dose when compared with the action level proposed by local and international organizations. Hence, the workers are at risk to 222Rn during water treatment and production processes.  </div> Radon-222, occupational exposure, electret, water treatment and production plants, Ogbomoso, Nigeria. 255 260 http://ijrr.com/browse.php?a_code=A-10-1-1037&slc_lang=en&sid=1 M.K. Lawal 7900319475328460023686 7900319475328460023686 No Department of Science Laboratory Technology, Ladoke Akintola University of Technology, Ogbomoso, Nigeria P.S. Ayanlola psayanlola28@lautech.edu.ng 7900319475328460023687 7900319475328460023687 Yes Department of Pure and Applied Physics, Ladoke Akintola University of Technology, Ogbomoso, Nigeria A.A. Aremu 7900319475328460023688 7900319475328460023688 No Department of Pure and Applied Physics, Ladoke Akintola University of Technology, Ogbomoso, Nigeria O.O. Oladapo 7900319475328460023689 7900319475328460023689 No Department of Science Laboratory Technology, Ladoke Akintola University of Technology, Ogbomoso, Nigeria G.A. Isola 7900319475328460023690 7900319475328460023690 No Department of Pure and Applied Physics, Ladoke Akintola University of Technology, Ogbomoso, Nigeria O.M. Oni 7900319475328460023691 7900319475328460023691 No Department of Pure and Applied Physics, Ladoke Akintola University of Technology, Ogbomoso, Nigeria E.A. Adeoje 7900319475328460023692 7900319475328460023692 No Department of Pure and Applied Physics, Ladoke Akintola University of Technology, Ogbomoso, Nigeria