Radiological Risk Estimates Due to Background Exposures in Selected Hospitals in South – East Nigeria
Journal Title: Archives of Current Research International - Year 2017, Vol 8, Issue 1
Abstract
Radiation is present everywhere on the Earth and humans are exposed to it without being aware of it. Exposure to natural ionizing radiation is inevitable as long as we live on Earth. An in-situ measurement of indoor and outdoor exposure dose rates of Federal Medical Center Umuahia (FMC Umuahia) and Federal Medical Center Owerri (FMC Owerri) were measured with well calibrated radiation meters (Radalert-100 and Digilert-200). The average indoor and outdoor exposure rates for Federal Medical Center Umuahia were 0.014±0.003 and 0.014±0.003 mRh-1, while that for Federal Medical Center Owerri were 0.012±0.002 mRh-1 and 0.013±0.002 mRh-1. The values show that the exposure rates for Federal Medical Center Owerri is within the range of the World threshold value of 0.013 mRh-1, while that of FMC Umuahia is higher. The average indoor and outdoor absorbed dose rate measured at federal medical centre (FMC) Owerri are 106.7 and 104.7 nGyh-1 respectively while the average indoor and outdoor absorbed dose for Federal medical center (FMC) Umuahia are 120.1 and 116.8 nGyh-1 respectively. These values exceeded the world average of 89 nGyh-1. Also the results for average excess lifetime cancer risk (ELCR) calculated for indoor and outdoor for the hospitals show that ELCR for both indoor and outdoor exposures were all higher than the world acceptable value of 0.29x10-3, but the annual effective dose levels for the hospitals both indoor and outdoor were all below the 1 mSvy-1 maximum permissible limit for the public set by the International Commission on Radiological Protection (ICRP). Therefore there is need for the management of the hospitals to monitor radiation levels in other to take necessary precautions to avoid radiation levels getting to unacceptable levels.
Authors and Affiliations
I. E. Nwokeoji, G. O. Avwiri
Keywords
Related Articles
- EP ID EP320161
- DOI 10.9734/ACRI/2017/34244
- Views 98
- Downloads 0
Training Human Resources for Health in Selected States of Southern Nigeria
Human resources are the heartbeat of health service delivery. The health workforce determines health outputs and outcomes, drives health system performance etcetera. Shortages of health workforce are widespread and suppl...
Evaluation of Workplace Safety Culture Implementation and Practice Using Agglomerative Hierarchy Clustering
This study assessed safety culture and practices in selected companies from the oil and gas, construction, transportation and logistics companies operating in the Niger Delta region of Nigeria. The questionnaire design u...
Temporal Variation of Reference Evapotranspiration in Lower River Kaduna Catchment Area, Nigeria
Lower River Kaduna catchment area is located in north part of Nigeria where climate variability is pronounce such as high rainfall which result to drought, ground water scarcity and high surface water to evaporation. As...
Time Periodic Varying Deceleration Parameter in Reconstructed f(R,T) Gravity
In this paper, we have investigated a string cloud with perfect fluid matter distributions for Friedmann–Robertson–Walker (FRW) space-time in reconstructedf(R,T)=α_1 R+α_2 f_3 (T) gravity. To obtain exact solutions of th...
Lattice Dynsamics of Face Centred Cubic Crystals
Lattice dynamics of fcc metal crystals have been studied within the harmonic approximation. Phonon dispersion relation (frequency as a function of wave vector) along the symmetry directions [100], [110] and [111], densit...