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

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

[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。

[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 mSy, 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.