2012-2014年北京部分军队医院放射工作人员异常剂量结果及分析

Analysis of the Abnormal Dose in Personal Dose Monitoring Results of some Radiation Workers in Beijing Military Hospital from 2012-2014

目的对2012-2014年期间北京部分军队医院放射工作人员个人剂量监测结果中出现的异常剂量进行总结分析。方法选取北京甲、乙、丙3家三甲军队医院的放射工作人员作为抽样调查对象,采用热释光剂量监测方法进行监测,将结果进行统计学分析。结果 2012-2014年共计监测4986人次,个人剂量出现异常31人次,异常剂量值主要集中在1.25～5 m Sv范围内,丙医院中出现异常剂量人次最多,共计19人次,占3家医院异常剂量总人次数的61.29%;不同工种情况中,出现异常剂量人次最多的是核医学工作人员,共计21人次,占异常剂量总人次数的67.74%。本次调查中,异常剂量产生主要原因包括工作量大、遗留在操作室,故意照射、佩戴位置不正确、操作中未佩戴个人防护用品5个方面。结论提高放射工作人员的防护意识,加强管理者对于放射防护工作的认识,科学利用监管手段,才能保证监测数据的真实性和准确性。

Objective To summarize and analyze the abnormal dose in personal dose monitoring results of some radiation workers in Beijing military hospital during the period of 2012-2014.Methods By investigating radiation workers sampled from 3 Three-A military hospitals（ A、B、C） and monitoring by thermo-luminescence dose monitoring method for statistical analysis of the results.Results According to the finding,among a total of 4986 person times of monitoring conducted during2012-2014,dose is abnormal for 31 person times,whose values are mainly concentrated in a range of 1.25 ～ 5 m Sv;abnormal dose is the most in C Hospital for person times,a total of 19,accounting for 61.29% of the 3 hospitals＇ total.In terms of different types of work,abnormal dose has the largest number of person times in nuclear medicine,a total of 21,accounting for67.74% of the total.In this investigation,abnormal dose is caused due to 5 major reasons including heavy workload,staying in the operating room,intentional exposure,incorrect wearing position,and wearing no personal protective devices.Conclusion It is concluded that the authenticity and accuracy of monitoring data can be ensured only by improving the protection awareness of radiation workers,improving the administrators＇ knowledge on radiation protection,and making use of regulatory means in a scientific way.