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目的掌握石家庄市放射工作人员受照剂量水平和防护现状,为今后放射防护工作提供依据。方法采用《外照射个人剂量系统性能检验规范》(GBZ 207-2008),利用热释光剂量测量法,每年监测6次。结果2009—2011年共有1 000多人连续3年接受外照射个人剂量水平的监测,年均剂量当量为1.99 mSv/a,集体剂量当量为9 556.14 man.mSv。市级医疗单位放射工作人员人均年剂量当量为2.68 mSv/a,居各放射单位之首;介入放射工作人员人均年剂量当量2.30 mSv/a,居各放射工种之首。结论正常工作条件下绝大多数放射工作人员的剂量是安全的,但仍需加强对个别单位和个别工种进行强制性剂量监测。加强全市放射工作人员防护知识培训,继续提高放射卫生防护水平。
Objective To understand the dose level and protection status of radiation workers in Shijiazhuang and provide the basis for future radiological protection. Methods The “External Exposure Personal Dose System Performance Test Specification” (GBZ 207-2008), the use of thermoluminescence dose measurement, monitoring 6 times per year. Results From 2009 to 2011, more than 1,000 people were monitored for external exposure dose for three consecutive years with an average annual dose equivalent of 1.99 mSv / a and a collective dose equivalent of 9 556.14 man.mSv. The per capita annual equivalent dose of radiation workers of municipal medical units is 2.68 mSv / a, ranking the first among all the radiological units. The per capita annual equivalent dose of radiation workers involved is 2.30 mSv / a, ranking the first among all radioactive workers. Conclusion The dosage of the vast majority of radiation workers under normal working conditions is safe, but mandatory dose monitoring on individual units and individual occupations is still required. Strengthen the city’s radiation workers protection knowledge training, continue to raise the level of radiation health protection.