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Study of radiation dose reduction of buildings of different sizes and materials

Furuta, Takuya   ; Takahashi, Fumiaki  

Dependence of the radiation dose reduction on sizes and materials of buildings was studied by numerical analyses using the Monte Carlo simulation code PHITS. Three building models were developed: the wooden house, open space concrete building, and thin-wall building, to study the effect of building size and construction material on dose reduction inside these structures. Here the floor area size of the building models were varied to clarify the influence of building configuration on dose reduction. The results demonstrated that the dose rates inside the buildings linearly decreased with increasing floor area on a logarithmic scale for all types of buildings. The calculation of dose distribution inside a building clarified that the distance from outer walls were a determinant factor for the dose rate at each position in the building. The obtained tendency was ensured by comparing to data for the dose reduction of typical buildings in Japan.

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Category:Nuclear Science & Technology

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