IMPROVEMENT ON INDOOR RADON ACCUMULATION RATE IN CST LABORATORIES AT COVENANT UNIVERSITY, OTA, NIGERIA

Usikalu, M.R. and Onumejor, C. A. and Akinpelu, A. and Ayara, Williams A. (2018) IMPROVEMENT ON INDOOR RADON ACCUMULATION RATE IN CST LABORATORIES AT COVENANT UNIVERSITY, OTA, NIGERIA. International Journal of Mechanical Engineering and Technology, 9 (10). pp. 135-148. ISSN 0976-6340 and ISSN Online: 0976-6359

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Abstract

Radon is becoming one of the most extensively investigated human carcinogens. Radon and its progeny in the air contribute to human exposure from natural radiation sources. The present study analyzed the indoor radon concentration in air at several laboratory spaces of CST building using RAD7 electronic radon detector. The measured radon concentration ranged from 0 to 57.3 Bqm-3 for all study locations. The obtained radon concentration results is well below the world set limit of 40 Bqm- 3 as recommended by International Commission on Radiological Protection. The annual effective dose and annual effective dose expressed in terms of work level month (WLM) ranged from 0.079 - 0.655 mSvy-1 and 0.0139 to 0.116 mSvy-1 respectively, which are below the world limit of 1.15 mSvy-1 as recommended by United Nations Scientific Committee on the Effects of Atomic Radiation. The correlation was obtained for the mean indoor radon concentrations and mean indoor air relative humidity for each study location with value range from 0.014 to 0.838. This reveals that there is a relevant correlation and indoor relative humidity has high influence on indoor radon concentration in most of the locations.

Item Type:	Article
Uncontrolled Keywords:	Radiation, radon concentration, carcinogens, annual effective dose
Subjects:	Q Science > Q Science (General) Q Science > QC Physics
Divisions:	Faculty of Engineering, Science and Mathematics > School of Physics
Depositing User:	Mrs Hannah Akinwumi
Date Deposited:	30 Sep 2019 14:38
Last Modified:	30 Sep 2019 14:38
URI:	http://eprints.covenantuniversity.edu.ng/id/eprint/12909

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