Abstract
Exposure to radon and its daughters is one of the important contributions for radiation doses to the publics. In this study, concentrations of radon gas were measured in air at Al-Tuwaitha Nuclear Site and some surrounding areas. Measurements were achieved by RAD7 (radon detector), manufactured by DURRIDGE COMPANY Inc. Indoor radon concentration plays a vital role in the total effective dose in the indoor environments. The measurement of the indoor radon concentrations ranged from (4.96±4.4 to 102±25) Bq/m 3 this high value of radon has been found at Decommissioning Directorate /emergency room, which is lower than the action value recommended by the EPA (Environmental Protection Agency) which is (148 Bq/m 3 ) while the lowest value has been founded in the Central Laboratories Directorate models Room. These values were used to calculate the annual effective dose, the dose exposed to the soft tissues other than the lungs D soft tissue , the dose rate due to alpha-radiation D lung and the effective dose equivalent rate H eff . The values of the annual effective doses for 222 Rn inhalation by the people were calculated and ranged from (0.124992 to 2.5704) mSv/y these result are lower than the value of (10 mSv/y) recommended by the ICRP (International Commission on Radiological Protection). It has been observed that winter concentration of indoor radon are greater than summer concentrations. The higher amount in the winter is attributed to the observation that people normally keep their windows closed during the winter, allowing indoor radon concentrations to rise. The lower radon concentrations in the summer might occur because people often open their windows, allowing low-radon outside air to enter the home. The results from this study show that the region has background radioactivity levels within the natural limits.
Highlights
Ecological contamination has existed for quite a long time yet just began to be critical after the mechanical unrest in the nineteenth century
The indoor radon concentration had been measured for 3 hours in twenty locations at Al-Tuwaitha nuclear site and some surrounding locations in cold and hot months
Based on the moveable device RAD7, the indoor air radon concentration values in work places were found to be lower than the action level for IAEA (International Atomic Energy Agency) which is (1000 Bq/m3) as a yearly average concentration for indoor radon in workplaces
Summary
Ecological contamination has existed for quite a long time yet just began to be critical after the mechanical unrest in the nineteenth century. Contamination happens when the environment can't devastate a component without making mischief or harm to itself. The components included are not created by nature, and the way toward eliminating can change from a day to a great many years (that is, for example, the case for radioactive pollutants). At the end of the day, contamination happens when nature couldn't break down a component that has been acquired to it an unnatural way. It is vital for us to be delicate and dynamic against every one of the pollutants making dangers our lives and this is the main reason for this study to ensure there is no huge contamination in our country and to guarantee the safety for the workers at Al-Tuwaitha nuclear site, the people that live close by to the site [1].
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