An investigation on total radioactivity in drinking water around operating Qinshan nuclear power plant / 预防医学

ABSTRACT

Objective To investigate the effect on radioactivity in drinking water around Qinshan nuclear power station (QNPS)in normal operational condition.Methods The field monitoring and laboratory analysis methods were adopted to detect the total radioactivity level in drinking water in 2015,according to different distances from the nuclear island and different types of water.Results The total alpha and total beta radioactivity level in drinking water around QNPS were 0.027(0.098)Bq /L and 0.263(0.071)Bq /L respectively,which were obviously lower than the national health standard limits(total alpha and total beta are 0.5,1.0 Bq /L respectively).Total radioactivity level had no relation with the distance from the nuclear island (P >0.05).The total alpha radioactivity in deep well water was the highest among the investigated three types of drinking water,and the highest value was 0.224 Bq /L.The beta radioactivity level in river water was the highest,and the highest value was 0.408 Bq /L.The total alpha radioactivity level was 0.017 (0.013)Bq /L in 2015, higher than the average level during 2010—2014.The beta radioactivity average level was 0.319 (0.102)and 0.289 (0.055)Bq /L,also higher than the average level during 2010—2014.Conclusion The total radioactivity in drinking water among nuclear power plant is in normal background level,so at present there is no effect of the radioactive contamination on drinking water around QNPS in nuclear power plant's normal operational condition.