Radioactivity monitoring in environmental water and air around QNPP

Radioactivity monitoring in environmental water and air around QNPP 1 corresp first-author E-mail: xyy@trenergy.cn E-mail: xyy@trenergy.cn xyy@trenergy.cn 1 1 1 1 1 Zhejiang Province Environmental Radiation Monitoring Center, Hangzhou 310012, China Zhejiang Province Environmental Radiation Monitoring Center, Hangzhou 310012, China Results of environmental radioactivity monitoring around Qinshan Nuclear Power Plant (QNPP) are reported in this paper. From 1992 to 2005, concentrations of 90 Sr, 137 Cs and 3 H 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 90 Sr, 137 Cs and 3 H 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 90 Sr, 137 Cs and 3 H 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 3 H in seawater sampled from No.1 outlet. Atomspheric 3 H 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 14 C concentrations at the two sites are in the same levels as the background and data of the reference site. Environment Radioactivity Monitoring Water Tritium in air Carbon-14 QNPP References The State Standard of PRC. Procedure of analysis for tritium in water, GB 12375-90 (in Chinese) . The State Standard of PRC. Procedure of collection and measurement for 14C in air, EJ/T 1008-96 (in Chinese) . Kim Chang-Kyu , Han Man-Jung . Applied Radiation and Isotopes 1999 , 50 : 783 - 791 . Applied Radiation and Isotopes 10.1016/S1001-8042(07)60069-4 X837 2007-03-07 2007-10-20 2021-01-19 2007 Nuclear Science and Techniques 05 18