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Analysis Study Research Paper | Radiological Sciences | Nigeria | Volume 12 Issue 7, July 2023 | Popularity: 5.2 / 10
Evaluation of Radiological Hazards Indices of Dose Rate Measurement from Akwa Ibom State, South-South Nigeria
Yau Idris, Isa Sambo, Ekong Godwin, Abuh Rafiu A.
Abstract: Sources of radiation like terrestrial, cosmic and anthropogenic activities etc are major contributors of exposures to human and other environmental biota, which raises global apprehensions and likewise the quest for impact mitigation. The dose rate measurement investigation was conducted to create a baseline of radiation and estimate related radiological risk implications in Akwa Ibom State, Nigeria located at 6?42?E, 7?30?N, before siting a proposed nuclear facility in the area. Method of dose rate measurement engaged in the investigation was a systematic grid, with appropriate equipment as ArcGIS software & GIS GARMIN Etrex 10, 7 RDS-31S/R and 2 Polimaster PM 1703 M-01 survey meters. The background radiation obtained with an overall average dose rate of 0.05?0.003, quite lower than the world average of 0.2 ?Sv/h. Radiological risk implications arising from the dose rate measurement were also evaluated. Absorbed dose rate with mean value of 45.87nGy/hr. The Annual Equivalent dose with mean value of 0.042 mSv/yr was below the world?s average of 0.42 mSv/yr. Annual effective dose outdoor with mean value of 0.07 mSv/yr which is below the world?s average of 0.42 mSv/yr; and mean Excess Lifetime Cancer Risk factor for the outdoor gamma radiation was seen to be 0.25 x 10-3 below the world?s average of 0.29x 10-3. The assessed risk implications were below admissible limits, and thus poses no health menace to the rural dwellers. However, continuous monitoring is recommended.
Keywords: Background Ionizing Radiation,Dose Rate, Hazard Indices, Akwa Ibom State
Edition: Volume 12 Issue 7, July 2023
Pages: 831 - 838
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