压水堆核电厂一回路抽真空排气方法和装置研究

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Study on Vacuum Exhaust Method and Device for Reactor Primary Loop of Pressurized Water Reactor Nuclear Power Plant

1. China Nuclear Power Operations Co., Ltd., Shenzhen, Guangdong. 518124, China;
2. China Nuclear Power Technology Research Institute, Shenzhen, Guangdong. 518124, China

摘要: 介绍了压水堆核电厂反应堆一回路抽真空排气方法,以及由带密封环反应堆压力容器临时顶盖、抽真空排气台架组成的抽真空排气装置设计方案和应用过程。利用该装置,在国内首次实现核电厂大修低低水位期间的反应堆一回路抽真空排气,取消了原有动排气过程,可缩短大修关键路径时间10余小时,降低反应堆冷却剂系统主泵损坏风险,提高电厂运行经济性和安全性。
- 核电厂 /
- 反应堆 /
- 抽真空排气
Abstract: This paper introduces the vacuum exhaust method for the reactor primary loop of Pressurized Water Reactor（PWR） nuclear power plant.It describes the scheme design and operation process of the vacuum exhaust device that is constituted by the temporary cover with sealing ring and vacuum releaser.This is the first time in China for reactor primary loop to be vacuum exhausted during the low-low water level in reactor plant overhaul.It makes the dynamic draining air process not needed,and effectively shortens 10 hours at least in the critical path time of the overhaul,reduces the damage risk of RCP pump,improves the economy and security of reactor power plant operation.
- Nuclear power plant /
- Reactor /
- Vacuum exhaust