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目的分析某勘探公司放射工作人员γ外照射个人剂量水平,为建立相关标准提供基础数据。方法依据《职业性外照射个人监测规范》(GBZ 128-2016)和《外照射个人剂量系统性能检验规范》(GBZ 207-2016)的要求和方法,采用热释光探测技术,2014年10月至2015年9月对我国某石油勘探公司496名放射职业人员γ外照射个人剂量水平监测,采用SAS 9.3分析个人剂量监测结果的剂量分布情况。结果该勘探公司放射工作人员平均年有效剂量为0.27 mSv;四个季度的结果均有不同,管理部门和作业部门大于监督部门的监测结果;放射工作人员的年龄、性别和接触工龄无统计学差异。结论该石油勘探放射工作人员γ外照射年剂量水平处于低水平状态,应加强管理部门和作业部门工作人员的防护工作。
Objective To analyze the individual γ dose level of radiation workers of an exploration company and provide the basic data for establishing relevant standards. Methods Based on the requirements and methods of the “Personal Monitoring Code for Occupational Exposed Personals” (GBZ 128-2016) and the “Performance Test Specification for External Exposure Individual Dose Systems” (GBZ 207-2016), the use of the thermoluminescence detection technology, October 2014 By September 2015, the individual dose levels of γ-radiation exposure of 496 radiation workers in an oil exploration company in China were monitored. SAS 9.3 was used to analyze the dose distribution of individual dose monitoring results. Results The average annual effective dose of radioactive workers in this exploration company was 0.27 mSv. The results of the four quarters were different. The results of monitoring were higher in the management and operating departments than in the supervisory departments. There was no significant difference in the age, sex and length of exposure among radiation workers . Conclusion The dose of γ-ray irradiation of petroleum exploration and radiation workers is in a low level, and the protection work of the management department and operating department staff should be strengthened.