刘鸿诗 1胡晓燕 1陈彬 1胡丹 1宋建锋 1李夏1
作者信息
- 1. 浙江省辐射环境监测站,浙江 杭州,310012
- 折叠
摘要
Abstract
In the past twenty years ,a continuous supervision monitoring of environmen-tal radioactivity level around Qinshan NPP (QNPP) Base was carried out by Zhejiang Province Radiation Environmental Monitoring Center .The monitoring results show that theγradiation dose rate around QNPP Base ,the activity concentration of gross α,grossβ,40 K ,and 137 Cs in aerosol samples ,the grossβdaily settlement in fallout ,the activity concentration of 14 CO2 in air ,the activity concentration of gross α,gross β, 90 Sr ,and 137 Cs in environmental freshwater (drinking water , lake water and well water ) , the average specific activity of 238 U ,232 Th ,226 Ra ,and 137 Cs in soils ,and the average specif-ic activity of 40 K ,137 Cs ,90 Sr ,and 14 C in edible plants ,are not abnormal .The radionu-clide contents in those samples are of the same levels compared with the background values before the operation of QNPP Base and the monitored values of Hangzhou refer-ence site . However , the activity concentrations of 3 H in air , rain water , drinking water ,pond water ,sea water of discharge site ,and terrestrial plants are higher than the monitored values of Hangzhou reference site ,and in some medium the activity concen-trations of 3 H outclass that of background around QNPP Base .The results indicate that after 20 years operation of QNPP Base ,especially after the third phase heavy water reactors operation commercially ,the external environment around QNPP Base has been affected by 3 H in radioactive effluent .关键词
环境放射性/监督监测/秦山核电基地Key words
environmental radioactivity/supervision monitoring/QNPP Base分类
资源环境
