沸騰水型原子力発電所の周辺に生育した植物中の^<14>C 濃度と発電所からの放出量の推定

概要

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Concentrations of 14C in vegetation collected near a nuclear power plant with two boiling water reactors were measured by a liquid scintillation counting technique to estimate the effects of 14C released from the nuclear power plant on the environment. The average 14C concentration in the vegetation collected near the nuclear plant was about 20mBq/g carbon higher than that collected from the environment where there was no effect of nuclear power plants. The increase in the 14C concentration in the vegetation was attributed to photosynthetic uptake of 14CO2 discharged from the nuclear power plant under normal operation. The elevated level of 14C content in the vegetation enables us to evaluate the discharged rate of 14C from the nuclear power plant and has led to an estimation of 0.36TBq/(GW·a) which is comparable to values reported on other BWRs.
日本保健物理学会の論文