Assessment of Radiation Exposure Levels and Associated Health Risks in Calabar Free Trade Zone, Nigeria

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Inyang Samuel O.; Essien Imeh E.; Jeremiah Unyimeabasi U.

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Paper Information

Journal: IRANIAN JOURNAL OF MEDICAL PHYSICS Year:2017 | Volume:14 | Issue:1 Page(s): 38-46

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Information Journal Paper

Title

Assessment of Radiation Exposure Levels and Associated Health Risks in Calabar Free Trade Zone, Nigeria

Author(s)

Inyang Samuel O. | Essien Imeh E. | Jeremiah Unyimeabasi U. | Issue Writer Certificate

Keywords

Effective Dose

Health Risk

Cancer

Oil and Gas

Abstract

Introduction Exposure to chronic levels of ionizing radiation could be detrimental to health even at very low doses. Calabar free trade zone (CFTZ) was established to promote export business in Nigeria and it is yet to produce exposure data of the Zone. Materials and Methods The Zone was divided into three categories depending on the type of business. Category A had facilities with manufacturing businesses, Category B was service providers while Category C was Oil and Gas businesses. Exposure levels within the CFTZ were measured with exposure meter and results obtained were converted to annual Effective Dose in mSv/yr. The evaluated doses were used to estimate Health Risks to workers in the Zone in terms of lifetime Cancer incidence and mortality for persons aged between 18 – 65 years using the conversion factors in BEIR VII. Results Category B facilities had dose values between 0. 21 – 0. 31 mSv/yr followed by Category A with dose values between 0. 23 – 0. 35 mSv/yr. Category C facilities had the highest dose values between 0. 33 – 0. 40 mSv/yr. The evaluated Cancer incidence and mortality rates were generally less than 2 persons in 1, 000 persons for both male and female workers. Conclusion The study shows that the exposure levels in business facilities within the CFTZ were higher than the background radiation level. The Effective Doses were not uniform for the different categories. The estimated Cancer incidence and mortality were low, and simple linear equations were generated to relate Cancer incidence to mortality.

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APA: Copy

Inyang, Samuel O., Essien, Imeh E., & Jeremiah, Unyimeabasi U.. (2017). Assessment of Radiation Exposure Levels and Associated Health Risks in Calabar Free Trade Zone, Nigeria. IRANIAN JOURNAL OF MEDICAL PHYSICS, 14(1), 38-46. SID. https://sid.ir/paper/718954/en

Vancouver: Copy

Inyang Samuel O., Essien Imeh E., Jeremiah Unyimeabasi U.. Assessment of Radiation Exposure Levels and Associated Health Risks in Calabar Free Trade Zone, Nigeria. IRANIAN JOURNAL OF MEDICAL PHYSICS[Internet]. 2017;14(1):38-46. Available from: https://sid.ir/paper/718954/en

IEEE: Copy

Samuel O. Inyang, Imeh E. Essien, and Unyimeabasi U. Jeremiah, “Assessment of Radiation Exposure Levels and Associated Health Risks in Calabar Free Trade Zone, Nigeria,” IRANIAN JOURNAL OF MEDICAL PHYSICS, vol. 14, no. 1, pp. 38–46, 2017, [Online]. Available: https://sid.ir/paper/718954/en

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