【摘要】 介绍1992年~2012年,对浙江省秦山核电基地外围环境γ辐射剂量率水平的监测结果。1992~2002年秦山核电基地周围环境2.5 km范围内高压电离室连续监测系统测得的环境γ辐射剂量率年均值范围为63~119 n Gy/h,平均值为95 n Gy/h,接近于核电厂运行前的平均本底值(93 n Gy/h)。2002~2012年周围环境5km范围内高压电离室连续监测系统测得的环境γ辐射剂量率年均值范围为90~116n Gy/h,平均值为102 n Gy/h,低于同期杭州对照点监测平均值(107 n Gy/h)。1992~2012年周围环境50 km范围内测得的陆地瞬时环境γ辐射剂量率(已扣除宇宙射线响应值)年均值测量范围为52.7~69.9 n Gy/h,平均值为62.1 n Gy/h,与运行前本底调查值和对照点监测值相比,处于同一水平。更多还原

【Abstract】 The monitoring result of environmental gama radiation dose rate around Qinshan Nuclear Power Plant from 1992 to 2012 is introduced in this paper.Within the scope of 2.5km around Qinshan Nuclear Power Plant,the annual average range of gamma radiation dose rate is63 ~119n Gy/h and the average value is 95 n Gy/h from 1992 to 2002,which is detected by automatic continuous monitoring system(high pressure ionizing chambers).This value is close to the background average value(93n Gy/h) before the operation of nuclear power plant.Within the scope of 5km around Qinshan Nuclear Power Plant,the annual average range of gamma radiation dose rate is 90 ~116n Gy/h and the average value is 102 n Gy/h from 2002 to 2012,which is detected by automatic continuous monitoring system(high pressure ionizing chambers).This value is lower than the average value(107n Gy/h) detected at the control point in Hangzhou at the same period.Within the scope of 50 km around Qinshan Nuclear Power Plant,the annual average range of instantaneous gamma radiation dose rate(excluding cosmic rays response values) is 52.7~69.9n Gy/h and the average value is 102 n Gy/h and the average value is 62.1n Gy/h from 1992 to 2012.This value is at the same level compared with the background survey values and the monitoring value of the control point.更多还原