大亚湾核电站闸阀锅炉效应状况及其改进

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Status of Boiler Effect for Safety-Related Gate Valves and Its Improvement

Daya Bay Nuclear Operations & Management Co., Ltd., Shenzhen, Guangdong, 518124, China

摘要: 基于国际上相关的闸阀锅炉效应的试验和研究结果,利用甄别方法及概率安全分析(PSA)方法对大亚湾/岭澳核电站每个机组的闸阀锅炉效应进行了分析。结果表明,大亚湾/岭澳核电站每个机组的闸阀RIS063/064VP及PTR022VB需要改进。为了防止阀腔超压,改进的措施分别为：RIS063/064VP增加带有双向逆止阀的的旁路,PTR022VB则在高压侧的闸板上钻孔。
- 核电厂 /
- 闸阀 /
- 锅炉效应
Abstract: Based on international experimental and research results for Boiler Effect,this paper describes the analysis principle and method for Daya Bay ＆ Ling’ao nuclear power stations to confirm which gate valves are affected by boiler effect.Further analysis with PSA and detailed safety functions is to define finally RIS063/064VP and PTR022VB need to be modified.The solution avoiding Boiler Effect for RIS063/064VP is adding a bypass line with double-directional check valve,and drilling a hole on the upstream disk of PTR022VB is adopted.
- Nuclear safety /
- Gate valves /
- Boiler effect