摘要
压水堆核电站氧化停堆过程中,一回路冷却剂中^(58)Co的停堆释放峰值可达上百个GBq/t,对工作人员的职业照射剂量及停堆进程都有很大影响。本文介绍了压水堆核电站氧化停堆过程,分析了对^(58)Co活度浓度变化有显著影响的因素,如一回路水化学、蒸汽发生器传热管材料、循环中停堆、化学和容积控制系统的净化等,同时提出了相关建议。
In the process of oxygenation operation during cold shutdown, the ^58Co release peak in theprimary circuit can reach the value of about hundreds GBq/t, which has a notably effect on theoccupational exposure and the shutdown process. This paper introduces the PWR oxygenation shutdown.Several key factors affecting the ^58Co activity concentration in the primary coolant during oxygenationshutdown are analyzed, including the primary coolant chemistry, material composition of steam generationtubes, mid-cycle shutdowns, the purification of chemical and volume control system. Based on thesefactors, some proposals are proposed
出处
《辐射防护》
CAS
CSCD
北大核心
2016年第4期206-210,共5页
Radiation Protection
关键词
氧化停堆
一回路冷却剂
58Co峰值
水化学
oxygenation shutdown
primary circuit coolant
^58Co peak
coolant chemistry
