CAJ | 학술논문

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的20年监督性监测结果表明，秦山核电基地外围环境γ辐射剂量率，气溶胶中总α、总β、40 K、137 Cs的活度浓度，沉降物中总β日沉降量，空气中14 CO2活度浓度，陆地淡水（饮用水、湖塘水、井水）中总α、总β、90 Sr、137 Cs的活度浓度，土壤中γ核素238 U、232 Th、226 Ra、137 Cs的比活度，生物样品中放射性核素40 K、137 Cs、90 Sr及14 C的比活度，均未发现异常，与对照点监测值和运行前本底调查值相比，属同一水平。空气、雨水、地表水、饮用水、排放口海水和陆生植物样品中3 H活度浓度均高于相应对照点监测值，部分介质中3 H活度浓度远高于基地运行前相应的本底。说明秦山核电基地20年的运行，特别是秦山三期重水堆运行之后，其外围环境已受到基地流出物中3 H排放的影响。
절강성복사배경감측참대진산핵전기지외위배경방사성수평적20년감독성감측결과표명，진산핵전기지외위배경γ복사제량솔，기용효중총α、총β、40 K、137 Cs적활도농도，침강물중총β일침강량，공기중14 CO2활도농도，륙지담수（음용수、호당수、정수）중총α、총β、90 Sr、137 Cs적활도농도，토양중γ핵소238 U、232 Th、226 Ra、137 Cs적비활도，생물양품중방사성핵소40 K、137 Cs、90 Sr급14 C적비활도，균미발현이상，여대조점감측치화운행전본저조사치상비，속동일수평。공기、우수、지표수、음용수、배방구해수화륙생식물양품중3 H활도농도균고우상응대조점감측치，부분개질중3 H활도농도원고우기지운행전상응적본저。설명진산핵전기지20년적운행，특별시진산삼기중수퇴운행지후，기외위배경이수도기지류출물중3 H배방적영향。
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 .