Gamma dose measurement in dwellings of Agastheeswaram Taluk of Kanyakumari district, lying 30 km Radius from Kudankulam nuclear power plant site |
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| Authors: | J Malathi S Selvasekarapandian G M Brahmanandhan D Khanna V Meenakshisundaram M T Jose M P Rajan A G Hegde |
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| Institution: | (1) Solid State and Radiation Physics Laboratory, Department of Physics, Bharathiar University, Coimbatore, 641 046, India;(2) Radiological Safety Section, Health Physics Division, Indira Gandhi Center for Atomic Research, Kalpakkam, 603 102, India;(3) Environmental Survey Laboratory, KKNPP, Kudankulam, 627 106, India;(4) ESS, Health Physics Division, Bhabha Atomic Research Center, Mumbai, 400 085, India |
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| Abstract: | Most of the building materials contain naturally occurring radioactive elements, the most important of which are potassium
40K and the members of two natural radioactive series, which can be represented by the isotopes of thorium 232Th and Uranium 238U. The presence of these radioisotopes in the materials causes external exposure to the people who live in the building. In
addition, the disintegration of Uranium 238U increases the concentration of radon gas 222Rn and of its daughters in the house. So a systematic indoor gamma dose measurement has been performed in the dwellings of
Agastheeswaram Taluk of Kanyakumari district, which is lying within the 30 km radius from the upcoming Kudankulam nuclear
power plant site. The geometric mean of annual absorbed dose from gamma radiation in dwellings has been found to be 278 nGyh−1. The seasonal variation of indoor gamma dose measurements has also been studied. Significant differences have been observed
in dwellings built of different materials such as concrete, tiled, etc. |
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| Keywords: | Indoor gamma dose TLD Nuclear power plant |
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