CAJ | 학술논문

目的检测和评估某供电企业工频电磁场职业暴露现况.方法采用德国PMM8053电磁场测量系统(EHP-50工频电磁场测量探头)对作业环境进行测量,使用美国EMDEX LITE个体磁场剂量仪对作业岗位进行抽样测量,运用GBZ 2.2 2007《工作声所物理因素测量第3部分:工频电场》以及ICNIRP的限值标准对结果进行评估.结果超高压变电站500 kV电压区90％以上测点工频电场强度超过5 kV/m,电抗器和电容器附近磁场强度常超过100μT,可达几百微特斯拉.供电作业工人日暴露平均水平在0.04～5.0 μT之间,70％作业工人高于0.4 μT.结论 500 kV及以上超高压变电站高压区、各级变电站电抗器和电容器为供电企业工频电磁场关键控制点,存在急性健康影响风险.供电企业作业工人累计磁场暴露水平较高.
목적 검측화평고모공전기업공빈전자장직업폭로현황.방법 채용덕국PMM8053전자장측량계통(EHP-50공빈전자장측량탐두)대작업배경진행측량,사용미국EMDEX LITE개체자장제량의대작업강위진행추양측량,운용GBZ 2.2 2007《공작성소물리인소측량제3부분:공빈전장》이급ICNIRP적한치표준대결과진행평고.결과 초고압변전참500 kV전압구90％이상측점공빈전장강도초과5 kV/m,전항기화전용기부근자장강도상초과100μT,가체궤백미특사랍.공전작업공인일폭로평균수평재0.04～5.0 μT지간,70％작업공인고우0.4 μT.결론 500 kV급이상초고압변전참고압구、각급변전참전항기화전용기위공전기업공빈전자장관건공제점,존재급성건강영향풍험.공전기업작업공인루계자장폭로수평교고.
Objective To measure and assess the levels of occupational exposure to power frequency electromagnetic fields in workers of power grid.Methods PMM8053 electromagnetic fields measuring system with EHP-50 probe was used to measure the levels of electromagnetic fields at working place.Personal dosimeters (EMDEX LITE) were utilized to measure the individual exposure levels of power frequency magnetic field.The results were evaluated with the limitation criteria of GBZ2.2 and ICNIRP.Results In the 500 kV ultra high voltage substation,the intensity at 90％ measure points of power electric field was more than 5 kV/m.The magnetic field intensity in the areas nearby reactors and capacitors was often higher than 100 μT,even several hundreds μT.The mean daily exposure levels of workers in power grid were between 0.04 and 5.0 μT,and the exposure levels of 70％ workers were higher than 0.4 μT.Conclusion In the areas of ultra high voltage and nearby the reactors and capacitors are the key control points for occupational health in power grid.There is acute health risk of workers exposed to high accumulative exposure levels.