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秦山核电站周围环境沉降物总β放射性水平监测

Monitoring of Gross Beta Activity in Environmental Fallout around Qinshan NPP

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【作者】 叶际达； 曾广建； 陈彬； 吴宗梅；

【Author】 Ye Jida Zeng Guangjian Chen Bin Wu Zongmei (Zhejiang Province Environmental Radiation Monitoring Center, Hangzhou, 310012)

【机构】 浙江省辐射环境监测站； 浙江省辐射环境监测站 杭州； 310012； 杭州； 310012；

【摘要】 介绍了1993～2002年秦山核电站周围环境沉降物总β放射性的监测结果。在秦山核电站周围布设5个监测点,共采集191个沉降物样品,测得总β比活度范围为0.11～3.64Bq/m2d,10a平均值为0.91±0.49Bq/m2d,低于杭州市1997～2002年的平均值(1.02±0.35Bq/m2d),说明秦山核电站运行至今周围环境沉降物样品中总β放射性比活度没有升高。

【Abstract】 The results of gross beta activity monitored during the period of 1993-2002 in environmental fallout samples around Qinshan Nuclear Power Plant are presented in this paper. A total of 191 samples of fallout were collected at 5 monitoring posts in the surrounding area of the NPP. The measured specific activity of gross beta is in the range of 0.11～3.64 Bq/m2d, with a 10-year average of 0.91±0.49 Bq/m2d, lower than the average, 1.02±0.35 Bq/m2d, measured for Hangzhou City during the period of 1997-2002. It indicated that the specific activity of grass beta in the environmental samples had not increased since the beginning of operation of the NPP.

【关键词】 环境放射性； 监测； 秦山核电站； 沉降物； 比活度； 总β；
【Key words】