Assessment of Natural Radioactivity and Associated Radiation Hazards in Some Building Materials Used in Kilpenathur, Tiruvannamalai Dist, Tamilnadu, India
نویسندگان
چکیده
The present study aimed to measure the activity concentration of natural radionuclides in the locally used building materials from Kilpenthaur, Tiruvannmalai Dist, Tamilnadu, India was investigated with an aim of evaluating the radiation hazard arising due to the use of these materials in the construction of dwellings. The concentrations of natural radionuclides Ra, Th and K in four types of building materials have been 226 232 40 measured by gamma spectrometry using NaI (Tl) 3” x 3”detector. The estimated radium equivalent activity (Ra ), criteria formula (C ), indoor absorbed gamma dose rate (D ), annual effective dose rate (H ), annual eq R R R gonadal dose equivalent (AGDE), activity utilization index (AUI), representative level index (RLI), excess lifetime cancer risk (ELCR), Internal and Extrnal Radiation hazard indeces (H & H ) alphaindex (I ) and in ex gammaindex (I ) were lower than the recommended safe limit and are comparable with results from similar studies conducted in other countries. Therefore, the use of these building material samples under investigation in the construction of dwellings is considered to be safe for inhabitants.
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