title: Radionuclide content of NORM by-products originating from the coal-fired power plant in Oroszlány (Hungary).
abstract: At the Thermal Power Plant in Oroszlány (Hungary), a huge amount of by-products have been produced since 1961. In this survey, coal and other by-products were examined (fly ash, bottom ash, fluidised bed bottom ash, gypsum and slurry-type ash). The natural isotopes were determined using an HPGe detector. It was found that the radionuclide content of coal was significantly lower ((226)Ra = 45.3±6.3, (232)Th = 26.3±5.7 and (40)K = 210±21 Bq kg(-1)) than that in the case of ashes other than the fluidised type. The average values of the bottom ash-deposited in the largest quantities-were three times higher than those for coal ((226)Ra = 144±18, (232)Th = 84.3±14 and (40)K = 260±25 Bq kg(-1)). In the case of fractionised bottom ash, the radionuclide content of <0.1 mm was 45 % higher than that of >1.6 mm and the massic radon exhalation of <0.1 mm was approximately four times higher than that above this range.
authors.affiliation: Institute of Radiochemistry and Radioecology, University of Pannonia, 10 Egyetem str. H-8200, Veszprém, Hungary Social Organization of Radioecological Cleanliness, 10. Egyetem str. H-8200, Veszprém, Hungary.
authors.forename: R
authors.initials: R
authors.lastname: Kardos
authors.affiliation: Institute of Radiochemistry and Radioecology, University of Pannonia, 10 Egyetem str. H-8200, Veszprém, Hungary.
authors.forename: Z
authors.initials: Z
authors.lastname: Sas
authors.affiliation: Institute of Radiochemistry and Radioecology, University of Pannonia, 10 Egyetem str. H-8200, Veszprém, Hungary.
authors.forename: M
authors.initials: M
authors.lastname: Hegedűs
authors.affiliation: Institute of Radiochemistry and Radioecology, University of Pannonia, 10 Egyetem str. H-8200, Veszprém, Hungary.
authors.forename: A
authors.initials: A
authors.lastname: Shahrokhi
authors.affiliation: Institute of Radiochemistry and Radioecology, University of Pannonia, 10 Egyetem str. H-8200, Veszprém, Hungary.
authors.forename: J
authors.initials: J
authors.lastname: Somlai
authors.affiliation: Institute of Radiochemistry and Radioecology, University of Pannonia, 10 Egyetem str. H-8200, Veszprém, Hungary kt@almos.uni-pannon.hu.
authors.forename: T
authors.initials: T
authors.lastname: Kovács
mesh_terms: D001417:Background Radiation; D003031:Coal / Q000032:analysis*; D006814:Hungary; D007220:Industrial Waste / Q000032:analysis / Q000706:statistics & numerical data*; D011210:Power Plants / Q000706:statistics & numerical data*; D011829:Radiation Dosage; D000069079:Radiation Exposure / Q000032:analysis / Q000706:statistics & numerical data*; D011834:Radiation Monitoring / Q000379:methods / Q000706:statistics & numerical data; D011868:Radioisotopes / Q000032:analysis*
chemical_list: D003031:Coal; D007220:Industrial Waste; D011868:Radioisotopes