某核电厂区域辐射监测一次气态源项异常的分析

Abstract

Abstract: The KRT0036MA is the channel for monitoring radioactive gas activity concentration, mainly used for radioactive monitoring in the ventilation pipeline of the main control area in nuclear power plant. During operation, the 4^th branch activity rised and was confirmed as real radiation level increase. This study analyzed the DVN system (NX ventilation system) layout, on-site operation and maintenance time line, working process and source term comparison, and identified the cause of the activity increase. By optimizing the sampling operation process and other measures, the radiation safety of the working environment for on-site personnel has been ensured.

Key words: nuclear power plant, radiation monitoring, radiation activity

ZHANG Jingzhi, WU Zhifeng, WANG Liang. Analysis of abnormal gas source term in area radiation monitoring in a nuclear power plant[J].RADIATION PROTECTION BULLETIN, 2025, 45(1): 28-33.

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Analysis of abnormal gas source term in area radiation monitoring in a nuclear power plant

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