Dinis, M. L.Fiúza, AntónioGóis, JoaquimCarvalho, José Soeiro deMeira Castro, Ana C.2015-01-082015-01-082014978-3-319-11058-5978-3-319-11059-2http://hdl.handle.net/10400.22/5349The aim of this work was to simulate the radionuclides dispersion in the surrounding area of a coal-fired power plant, operational during the last 25 years. The dispersion of natural radionuclides (236Ra, 232Th and 40K) was simulated by a Gaussian plume dispersion model with three different stability classes estimating the radionuclides concentration at ground level. Measurements of the environmen-tal activity concentrations were carried out by γ-spectrometry and compared with results from the air dispersion and deposition model which showed that the stabil-ity class D causes the dispersion to longer distances up to 20 km from the stacks.engconference object10.1007/978-3-319-11059-2_65