Radon exhalation rate and radiation dose from soil samples collected from different places surrounding the kasimpur thermal power plant

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Author: 
Dr. Meena Mishra
Abstract: 

Fly ash from a thermal power plant is spread and distributed in the surrounding areas by air and may be deposited on the soil of the nearby region. Thus the radioactivity levels of the soil samples may alter and it is quite important to estimate the changes. Can technique using LR-115 type II solid state nuclear track detector has been employed for the measurement of radon activity and radon exhalation rate. Radon activity varies from 3091.43 Bq m-3 to 4997.14 Bq m-3 with an average value of 3948.19 Bq m-3 . Exhalation rate varies from 1111.44 mBq m-2 h-1 to 1796.59 mBq m-2 h-1 with an average value of 1419.47 mBq m-2 h-1 while effective dose equivalent varies from 131.06 µSv y-1 to 211.86 µSv y-1 with an average value of 167.38 µSv y-1 . The lowest value was found for the soil samples collected from R.R. 37 while the maximum value was found to be for the soil sample collected from Ingraham School, New Colony.

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