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Radionuklidų savitojo aktyvumo statybinėse medžiagose Lietuvoje eksperimentinis tyrimas, jų sukeltos apšvitos modeliavimas ir vertinimas / Investigation of concentrations of radionuclides in Lithuanian construction materials, modelling and evaluation of exposure due to these radionuclides

The study is devoted to problems of exposure caused by radionuclides in construction materials. Results received by gamma measurements and calculations (dose modeling) are used. Construction materials produced and/or used in Lithuania were investigated. The results of measurements (concentrations of natural radionuclides and activity indexes) are given for different types of construction materials. On the basis of these results and peculiarities of use of construction materials they have been classified according to their radiological significance. It helps to determine possible amounts of construction materials to be investigated and priorities of investigations. Relationship between activity indexes of different construction materials and dose rates in premises constructed of these construction materials has been determined. It might be used for increase of precision of personal dosimetric measurements performed in premises constructed of different materials. Possible relationship between absorbed dose rate indoors and concentration of indoor radon is discussed. Results of measurements of concentrations of natural radionuclides in archeological samples of construction materials are also presented and discussed. Dose modeling has been performed with the help of ALARA planning tool Visiplan 3D. Distributions of absorbed dose rate in standard living premises have been determined, relationship between dose rate and different parameters of constructions, such as thickness... [to full text]

Identiferoai:union.ndltd.org:LABT_ETD/oai:elaba.lt:LT-eLABa-0001:E.02~2006~D_20061109_193015-36445
Date09 November 2006
CreatorsPilkytė, Laima
ContributorsSkeivalas, Jonas, Mažeika, Jonas, Motiejūnas, Stasys, Styro, Dimitrijus, Girgždys, Aloyzas, Baltrūnas, Valentinas, Butkus, Donatas, Baltrėnas, Pranas, Vilnius Gediminas Technical University
PublisherLithuanian Academic Libraries Network (LABT), Vilnius Gediminas Technical University
Source SetsLithuanian ETD submission system
LanguageLithuanian
Detected LanguageEnglish
TypeDoctoral thesis
Formatapplication/pdf
Sourcehttp://vddb.library.lt/obj/LT-eLABa-0001:E.02~2006~D_20061109_193015-36445
RightsUnrestricted

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