Radioactivity monitoring in environmental water and air around QNPP

Results of environmental radioactivity monitoring around Qinshan Nuclear Power Plant (QNPP) are reported in this paper. From 1992 to 2005, concentrations of Sr-90, Cs-137 and H-3 in terrestrial freshwater are (4.4+/-1.7) mBq.L-1, (0.3+/-0.1) mBq.L-1 and (1.6+/-0.5) Bq.L-1, respectively, and (2.8+/-2.4) Bq.L-1 of 3 H in rainwater. Concentrations of Sr-90, Cs-137 and H-3 in the seawater samples collected from sea area nearby QNPP are (5.4+/-4.1) mBq.L-1, (0.7+/-0.2) mBq.L-1 and (1.0+/-0.5) Bq.L-1, respectively. Concentrations of Sr-90, Cs-137 and H-3 in the total waste water discharged from NPP-I are (4.0+/-1.8) m Bq.L-1, (1.0+/-0.5) mBq.L-1 and (2.8+/-2.2) Bq.L-1, respectively, and (1.4+/-0.4) Bq.L-1 of H-3 in seawater sampled from No.1 outlet. Atomspherie H-3 concentration in 1993-2005 at two monitoring sites is (78.9+/-96.3) and (64.2+/-40.2) mBq.m(-3), respectively, with an increasing trend after 2003. Atmospheric C-14 concentrations at the two sites are in the same levels as the background and data of the reference site.