某企业工业X射线实时成像检测系统螺旋钢管探伤放射防护现状

Radiological protection of a X-ray real-time imaging inspection system for industrial spiral steel pipe flaw detection

目的了解工业X射线实时成像检测系统螺旋钢管探伤的放射防护状况,评估对放射工作人员和公众健康的影响。方法对该企业2条X射线实时成像检测系统及2座探伤室的基本情况进行调查,使用FJ-347A Xγ剂量仪,按照国家相关的放射卫生防护标准与方法对探伤现场进行防护检测和安全性评价。结果 2座探伤室的操作位、探伤室小防护门、探伤室墙体外剂量率接近辐射本底水平,车间大防护门表面剂量率0.50～1.20μGy/h(低于国家标准限值2.5μGy/h,);近2年放射工作人员个人剂量监测结果均低于国家标准年限制的1/10。结论该企业工业螺旋钢管X射线实时成像检测系统运行时,相关放射工作人员和周围公众是安全的。

[ Objective] To understand the radiological protection status of X-ray real-time imaging inspection system for industrial spiral steel pipe flaw detection, and assess the effect on health of workers and the public during operation. [ Methods] Through field survey of X-ray real-time imaging inspection system for industrial spiral steel-pipe flaw detection and the 2 X-ray detection rooms, FJ-347 A x-r dosimeter was used for Protection detection and safety evaluation in accordance with the relevant national radiological protection standards and methods. [ Results] The results showed dose rate of control rooms, room doors and external wall was close to the level of background radiation in 2 X-ray detection rooms, the workplace gates radiation leakage dose rate was 0.50-1.20 μGy/h （ lower than the national standard limit 2.5 μGy/h ）. Personal dose monitoring results of radiation workers in recent 2 years were lower than the national standard limit 1/10. [ Conclusion] During the operation of X-ray real-time imaging inspection system for industrial spiral steel pipe flaw detection in this enterprise, related radiation workers and the surrounding public are safe.