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Article

Natural Radioactivity and Associated Dose Rates in Soil Samples in the Destroyed Fuel Fabrication Facility, Iraq

1Department of Physics, College of Science, AL-Mustansiriya University, Iraq

2Ministry of Science and Technology, Iraq


International Journal of Physics. 2016, Vol. 4 No. 3, 50-54
DOI: 10.12691/ijp-4-3-1
Copyright © 2016 Science and Education Publishing

Cite this paper:
Abdulla Ahmad Rasheed, Nada Farhan Kadhum, Nadhim Khaleel Ibrahim. Natural Radioactivity and Associated Dose Rates in Soil Samples in the Destroyed Fuel Fabrication Facility, Iraq. International Journal of Physics. 2016; 4(3):50-54. doi: 10.12691/ijp-4-3-1.

Correspondence to: Nadhim  Khaleel Ibrahim, Ministry of Science and Technology, Iraq. Email: nawi1980@yahoo.com

Abstract

The activity concentrations of naturally occurring radionuclides 226Ra, 232Th and 40K in soil samples collected from Fuel Fabrication Facility in Al-Tuwaitha nuclear site were measured by using a high resolution gamma spectrometry system via High Purity Germanium (HPGe) Detector with a relative efficiency of (>40%) and resolution (<1.8keV) at energy of (1.33MeV) for 60Co. The average activity concentrations of 226Ra, 232Th and 40K in soil samples were found to be 15.78±1.16, 14.09±1.33 and 306.42±18.1 Bqkg-1, respectively. The results obtained for the corresponding radionuclides are lower than the worldwide average values of 35, 30, and 400 Bqkg-1, respectively. The average absorbed dose rate in air (Dγ), the average radium equivalent activity (Raeq) and the average external hazard index (Hex) were determined as 28.90±2.12 nGyh-1, 59.52±4.45 Bqkg-1 and 0.16±0.012, respectively, which are below the permissible limit.

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