Radiation Dosimetry of Some Selected Industrial Sites at Onne Oil and Gas Free Trade Zone, Rivers State Nigeria

Authors

  • C. P. Ononugbo Department Of Physics, University of Port Harcourt, Port Harcourt
  • E. Komolafe Department Of Physics, University of Port Harcourt, Port Harcourt

DOI:

https://doi.org/10.12974/2311-8741.2016.04.01.1

Keywords:

Excess life time cancer risk, exposure, radalert-100, radiation, onne, exploitation.

Abstract

Measurement of radiation exposure rate of Onne Oil and Gas Free Trade Zone Authority, Rivers State, Nigeria was carried out in order to assess the radiological health implication of the exposed individuals. The area was divided into four zones namely Zone A, Zone B, Zone C and Zone D. An in-situ approach was adopted using two calibrated Nuclear Radiation meters (Digilert -50 and Radalert -100) and a Global Positioning System (GPS map-765). At each zone, eight (8) readings were taken making a total of thirty two (32) sampling points. The measured mean exposure rate of the four zones is 0.014, 0.015, 0.017 and 0.018mRh-1 respectively. About 78% of the sampling points have exposure rate higher than the normal standard radiation exposure rate of 0.013mRh-1. The mean absorbed dose of the four zones is 118.54, 127.24, 147.9 and 152.3nGyh-1. These values were higher than the world safe value of 84.0nGyh-1. Annual effective doses of all the sampling point are within the safe value but the excess life time cancer risk estimated for all the sampling points exceeded the safe value of 0.29×10-3. This study shows that there is no immediate health hazard on the workers, staffs and the general populace of the host communities but continuous and prolonged exposure may pose health challenges to the staff working within the free trade zones and those residing around the area. 

References

DOE (Department of Energy). Decommissioning Radiological and Hazardous Chemical Human Health Impacts Evaluation, Environmental Impact Statement, DOE/EIS-0337F, West Valley Area Office, New York 2008.

OGP. Guidelines for the management of Naturally Occurring Radioactive Material (NORM) in the oil and gas industry, International Oil and Gas producers’ publication 2008.

Ononugbo CP, Avwiri GO and Chad-Moran YE. Impact of Gas Exploitation on the Environmental Radioactivity of Gobi / Abeam/ Nona Area. Nigeria Energy and Environment 2011; 22(8) 1017- 1029. http://dx.doi.org/10.1260/0958-305X.22.8.1017

Chad-Umoren YE and Ohwekevwo E. Influence of crude oil spillage on the gamma radiation status of water and soil in Ogba/Egbema/Ndoni area, Nigeria. Energy and Environment Research 2013; 3(2): 1-8. http://dx.doi.org/10.5539/eer.v3n2p45

Agbalagba EO, Avwiri GO and Ononugbo CP. Evaluation of Naturally Occurring Radioactivity Materials (NORM) of Soil and Sediments in Oil and Gas Wells in Western Niger Delta Region of Nigeria. 2013 Journal of Environmental Earth Sciences Springer.

James ET. Atoms, Radiation and Radiation Protection. Third completely revised and enlarged edition. Wiley-VcH Verlag GmbH and co. kGaA.

Sadegh H, Hadi S, Mojtaba A, Babak A, Hasan F and Soheila R. Assessment of Gamma dose rate in indoor environment in selected districts of Ardabil Province, Northwestern Iran. Intl journal of occupational Hygiene 2010; 2: 42-45.

Uosif MA, Mahmond T, Shams AM and Reds E. Naturally Occurring Radionuclides in Sludge samples from some Egyptian Drinking water Purification Stations. International Journal of Advanced Science and Technology 2012; 42: 69-81.

UNSCEAR. Ionizing radiation: Sources and biological effects. Reports to the general assembly with scientific annexes. 2000, New York, United Nations.

Al-Saleh FS. Measurement of indoor gamma radiation and radon concentration in dwellings of Riyadh city, Saudi Arabia. Appl radiat Isot 2007; 65(7): 843-8. http://dx.doi.org/10.1016/j.apradiso.2007.01.021

Mahmoud A, Dar Mahmoud I and EL Saman. The interactions of some radioelements activity patterns with some hydrographic parameters at the petroleum and phosphate regions in the Red sea, Egypt. Journal of Research and Applied Sciences 2014; 7: 292-304.

Avwiri GO, Egieya JM and Ononugbo CP. Radiometric survey of Aluu landfill in Rivers State, Nigeria. The International Institute for Science, Technology and Education 2013, 22www.iiste.org.

Ononugbo CP and Nwii. Indoor and Outdoor Effective Doses from Background Ionizing Radiation in Private Medical Diagnostic centers in Bori, Rivers state. Journal of Environmental and Earth Science 2015; 5(9): 25-29.

Ononogbo CP, Avwiri GO and Komolafe ET. External Ionizing Radiation Exposure during Cargo/Vehicle Radiographic Inspection of Nigerian Ports Authority, Onne, Rivers State, Nigeria. Journal of Environment and Earth Science 2015; 5(11): 1-9.

Rafique M, Basharat M, AzharSaeed R and Rahamn S. Effect of geology and altitude on ambient outdoor gamma dose rates in district poonch, Azad Kashmir, Carpathian. Journal of Earth and Environmental Sciences 2013; 8(4): 165-173.

Avwiri GO, Alao AA and Onuma EO. Survey of Terrestrial Radiation levels of Onne Seaport, Rivers State, Nigeria. Asian Journal of Natural and Applied Science 2012; 1(3): 107-114.

Louis EA, Etuk ES and Essien U. Environmental Radioactivity level in Ikot Ekpene, Nigeria, Nigeria Journal of Space research 2005; 1: 80-87.

Avwiri GO and Agbalagba OE. Survey of gross alpha and gross beta radionuclide activity in Okpara creek, Delta state, Nigeria. Asia Network for science Information Journal of Applied Science 2007; 7(22): 3542-3547.

Muhammad R, Saeed Ur R, Muhammad B, Wajid A, Iftikhar A, Khursheed A, et al. Evaluation of Excess life time cancer risk from gamma dose rates in Jhelum valley. J of Radiat Res and Appl Sc 2014; 7: 29-35. http://dx.doi.org/10.1016/j.jrras.2013.11.005

International Commission on Radiological Protection (ICRP). Relative Biological Effectiveness Radiation weighting and quality factor Annals of ICRP-33, 2003; Pergamon press, Oxford.

Taskin H, Karavus M, Ay P, Topuzoghi A, Hindiroglums S and Karahan G. Radionuclide concentrations in soil lifetime cancer risk due to gamma radioactivity in Kirklaeli, turkey. Journal of Environmental Radioactivity 2009; 100: 49-53. http://dx.doi.org/10.1016/j.jenvrad.2008.10.012

Okeyode IC and Jibiri NN. Excess lifetime cancer risk associated with the use of sediments from Ogun River as building materials. Research Journal of Physics 2013; 7: 1-8. http://dx.doi.org/10.3923/rjp.2013.1.8

IPIECA/OGP. Drilling fluids and health risk management. International Petroleum Industry Environmental Conservation and International Association of Oil and Gas Producer, London, United Kingdom 2009.

NRPA. NORM in Oil and Gas industries. Radiation at work series, Norwegian Radiation Protection Authority 1999.

Nwankwo LI, Akoshile CO, Alabi AB, Ojo OO and Ayodele TA. Environmental Ionizing Radiation survey of Quarry sites in Ilorin Industrial Area. Nigerian Journal of Basic and Applied Science 2014; 22(1-2): 1-4. http://dx.doi.org/10.4314/njbas.v22i1.1

American Cancer Society (ACS), (2013). X-rays, Gamma rays and cancer risk.

Institute of Medical Research and Occupational Health (IMRH). Scientific Study of External Ionizing Radiation exposure during Cargo/Vehicle radiographic inspections, Zagreb. Journal of HR excellence in research 2012; 5(3): 1-10.

Khan MS, Nicholas EP and Terpilak SM. Radiation Dose Equivalent to Stowaways in Vehicles. Health physics publication 2004; 86(5); 483-492.

James IU, Moses IF and Vandi JN. Assessment of Gamma Dose Rate within Idu Industrial Area of Federal Capital Territory (FCT) Abuja, Nigeria. The International Journal of Engineering and Science 2013; 2(11) 52-55.

Nwankwo LI and Akoshile CO. Monitoring of external background radiation level in Asa Dam Industrial area of Ilorin, Kwara State, Nigeria. Journal of Applied Science and Environmental Management 2005a; 9(3): 91-94.

Iyang SO, Iyang IS and Egbe NO. Radiation exposure levels within timber industries in Calabar, Nigeria Journal of medical physics 2009; 32(2): 97-100. http://dx.doi.org/10.4103/0971-6203.51937

Downloads

Published

2016-06-15

How to Cite

Ononugbo, C. P., & Komolafe, E. (2016). Radiation Dosimetry of Some Selected Industrial Sites at Onne Oil and Gas Free Trade Zone, Rivers State Nigeria. Journal of Environmental Science and Engineering Technology, 4(1), 2–9. https://doi.org/10.12974/2311-8741.2016.04.01.1

Issue

Section

Articles