【摘要】 自1992年,浙江省辐射环境监测站对秦山核电基地外围环境放射性水平进行了连续的监督性监测。1992~2004年,基地外围环境水体放射性水平的监测结果表明:秦山核电基地外围地区陆地环境淡水(饮用水、湖塘水、井水)中总α、总β9、0Sr1、37Cs平均浓度分别为671、57、4.40、.3 mBq/L,3H为1.4 Bq/L,雨水中3H为2.0 Bq/L;正常排放下,基地附近海域水样中90Sr1、37Cs平均浓度分别为5.40、.7 mBq/L,3H为1.0 Bq/L;第一期核电厂三回路冷却水总β9、0Sr1、37Cs平均浓度分别为2.6、4.11、.0 mBq/L,3H为2.1 Bq/L,排放口海水3H平均浓度为1.4 Bq/L。与运行前本底值和对照点监测值相比,秦山核电基地外围环境水体放射性水平在正常波动范围内,基地外围环境陆地淡水和附近海域海水没有受到放射性污染。更多还原

【Abstract】 Since 1992,a continuous surveillance was made of environmental radioactivity levels around QNNP（Qinshan Nuclear Power Plant） base by the Environmental Radiation Monitoring Center of Zhejiang Province.The results shows that,in the duration 1992～2004,the average concentrations of grass α,grass β,（）⁹⁰Sr,(（）¹³⁷Cs) and（）³H in terrestrial freshwaters are estimated to be 67,157,4.4,0.3 mBq/L and 1.4 Bq/L,respectively,with 2.0 Bq/L for（）³H in rainwater.In the normal release,the average concentrations of（）⁹⁰Sr,（）¹³⁷Cs and（）³H are 5.4、0.7 mBq/L and 1.0 Bq/L,respectively.The average concentrations of grass β,（）⁹⁰Sr,（）¹³⁷Cs and（）³H in third loop cooling water at QNPP-1 are estimated to be 2.6,4.1,1.0 mBq/L and 2.1 Bq/L,respectively,with 1.4 Bq/L for（）³H in seawater at outlet.In comparison with the background levels prior to the operation,the environmental radioactive levels fluctuate in a normal range,with no radioactive pollution was found in the area investigated.更多还原