论文部分内容阅读
目的了解从事石油测井放射性人员个人剂量水平,为做好射线防护工作提供科学依据。方法对在中子、γ射线混合辐射场中的工作人员佩带由CR-39塑料径迹探测器和热释光LiF(Mg.Cu.P)元件组成的组合式剂量计作个人剂量监测。结果2002-2004年对253人年的个人剂量测量结果是:2002-2003年的集体剂量当量、年人均剂量当量,分别为112.44人.mSv、1.61mSv和121.72人.mSv、1.37mSv。2004年集体剂量当量为323.41人.mSv,年人均剂量当量为3.44mSv。结论95%的工作人员年剂量当量≤5mSv,因而绝大部分工作人员的工作环境是偏安全的。
Objective To understand the personal dose level of radioactive personnel engaged in oil well logging and to provide a scientific basis for radiation protection. Methods Workers in a mixed neutron and gamma-ray radiation field were exposed to a personal dose monitor using a combination dosimeter consisting of a CR-39 plastic track detector and a thermoluminescent LiF (Mg.Cu.P) element. Results The individual dose measurement results of 253 human years from 2002 to 2004 are: the collective dose equivalent and the average annual equivalent dose for 2002-2003 are 112.44 persons, mSv, 1.61 mSv and 121.72 persons respectively, mSv and 1.37 mSv. The collective dose equivalent in 2004 was 323.41 persons, mSv, and the average annual equivalent dose was 3.44 mSv. Conclusion 95% of the staff annual dose equivalent ≤ 5mSv, so the vast majority of staff working environment is partial security.