Abstract
Coal contains naturally occurring radionuclides arising from the uranium and thorium series. Burning of coal is one of the sources of the technologically enhanced exposure of human beings from natural radionuclides. The population is exposed to radiation which are discharged to the environment by the emissions from thermal power stations in gaseous and particulate form containing radioisotopes. This paper presents the measurements of airborne radon levels in the coal fired thermal power plants at Kasimpur (Uttar Pradesh), Lahra Mohabat at Bhatinda (Punjab) and at Durgapur (West Bengal) in India. Radon levels in the plants are found to be higher than in the Indian dwellings. Potential alpha activity, radon and its daughter concentration, and effective dose equivalent are obtained.
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