Buto konstrukcinių elementų įtakos sugertosios dozės galiai ore tyrimai

Abstract

The use of building materials containing natural radionuclides for construction of premises enhance absorbed dose rale in indoor air. External exposure results from gamma radionuclides present in the walls, floor and ceiling. Mathematical models can be used to predict external dose rates inside a room, provided the room geometry and radionuclide concentration activities are known. This paper gives mathematical evaluation of indoor external gamma dose in the air. Absorbed dose rates were evaluated by applying attenuation and build up. Modeling is done using software VISIPLAN-3D. The obtained results were compared with those reported in the literature. Dose coefficients are received for standard room, when different construction elements are made from concrete and wood. Absorbed dose rate distribution in the room is given.