沉井式X射线探伤室辐射环境影响监测与评价

Monitoring and evaluation of radiation environmental impact of sinking X-ray inspection room

目的以某一在用沉井式X射线探伤室为研究对象,对探伤室周围的辐射剂量率水平进行监测,结合相关的标准,进行分析与评价。评估该类探伤室的设计方案的优势与不足,为加强这一类X射线探伤室辐射安全监管提供科学依据。方法利用合适的仪器对探伤室周围环境开展周围剂量当量率监测,以及依据屏蔽规范开展理论估算,根据实际测量结果及估算结果开展评价。结果沉井式探伤室使用场所周围关注点的辐射剂量率满足相关标准的要求。结论应当加强对非典型X射线探伤室的环境管理,防止造成辐射安全隐患。

Objective Using a sinking X-ray inspection room as a research object,monitoring the radiation dose rate level around the inspection room,the results were analyzed and evaluated in conjunction with relevant standards. To evaluate the advantages and disadvantages of the design of this type of inspection room,and to provide a scientific basis for strengthening the radiation safety supervision of this type of X-ray inspection room. Methods Using appropriate instruments to monitor the ambient dose equivalent rate of the environment around the inspection room,and to carry out theoretical estimation according to the shielding specifications,and to carry out evaluation based on actual measurement results and estimation results. Result The radiation dose rate around the interest points of the sinking type flaw detection room meets the requirements of relevant standards. Conclusion The environmental management of atypical X-ray inspection rooms should be strengthened to prevent the hidden radiation safety hazards.