Dose Rate of Natural Radionuclides and Cs-137 in Marine Biota of Bangka Sea

Estimation of the dose rate of naturalγ radionuclide and 137Cs of sea water and marine sediment to larvae/small insect, mollusk/large insect, small fish, large fish and turtle has been carried out using Point Source Dose Distribution (PSDD) methodology. The results indicated that total dose rate of β and γ radiations from natural radionuclides and 137Cs from sea water and marine sediment to larvae/small insect, mollusk/large insect, small fish,large fish and turtle were small, around 6,03% from screening dose rate (SDR) of 100uGy/ hour. Based on these data,further investigation is not needed and this data can be used as a base-line data for marine monitoring activities if nuclear power plant (NPP) would be built and operated in Bangka islands. The total dose rate that calculated with PSDD methodology was compared using ERICA computer code, and the results indicated unsignificantly different.