2002～2005年济南市部分放射工作人员外照射个人剂量检测分析

目的]了解济南市放射工作人员外照射个人剂量水平及其变化趋势,找出薄弱环节,减少和避免射线对人体的危害。方法]对2002~2005年济南市115家市管单位放射工作人员个人剂量检测资料进行分析。结果]2002~2005年合计,应检测1890人年,实际检测1514人年,平均检测率为80.11%;集体剂量当量为686.69人.mSv;人均年剂量当量为0.45mSv,显著低于国家标准限值(50mSv),有15人为5~14mSv,2人为15~50mSv,1人(工业X射线探伤工作人员)>50mSv。结论]济南市管单位放射工作人员人均年剂量当量较低,应加强工业X射线探伤工作人员的防护。

Analysis of Individual Irradiated Dose Equivalent Measurements in some Radiation Workers in Jinan City from 2002 to 2005

Objective]To study the individual irradiated dose equivalent and variety from occupational external irradiation in radiation workers in Ji'nan city,find out the deficiency,reduce and avoid the hurt of X-ray.Methods]Data of individual irradiated dose equivalent measurements in radiation workers of 115 units in from 2002 to 2005 were analyzed.Results]For four years,1 890 man-year should be measured,in fact only 1 514.The average measurement rate was 80.11%;Collectivity dose equivalent for all subjects was found to be 686.69 man.mSv;Annual personal average dose equivalent was 0.45 mSv,which is far below the state exposure limit values(50 mSv).There is fifteen workers between 5 to 14 mSv,two was between 15 to 50 mSv,one (industrial X-ray application worker) overrun 50 mSv.Conclusion]Annual personal average dose equivalents in Ji'nan radiation workers were low,protection for industrial X-ray application workers should be strengthened.