Radiological Dose Assessments for Workers at the Italian Fuel Fabrication Facility at Al-Twaitha Site, Baghdad - Iraq with Aid of GIS Techniques

The aim of this research is to estimate the annual total effective radiological dose resulting from external and internal exposure that is expected to workers from some areas of the Italian Fuel Fabrication Facility (IFFF) at Al-Twaitha site. This site is under the Iraqi decommissioning project now, in order to taking the necessary protected precautions to them from these risks. Forty soil samples were collected and analyzed from different locations of this facility, which is about 32000 m2. The gamma rays spectroscopy technique with High Purity Germanium detector (HPGe) was used. Mixture of radioactive isotopes (232Th, 40K, 238U, 235U) were found in those samples according to the laboratory results. Total doses were manually calculated by special equations, the highest total radiological dose was (9.558 mSv/year) in the chosen area for sample (IFS-7). GIS techniques were used to estimate the entire area doses by applying inverse distance weight interpolation method. (C) 2017 The Authors. Published by Elsevier Ltd.