核电厂安全壳首次整体在役试验方案优化

安全壳整体试验是压水堆核电机组一项特大型、高风险、高难度的试验，通过模拟设计基准事故工况下安全壳内的峰值压力，在事故峰值压力平台下，进行安全壳整体泄漏率测量及各压力平台安全壳结构试验，以验证其密封和结构性能。安全壳整体试验是国家核安全局监管的一个重要见证点，试验结果直接决定是否能够启动反应堆发电。301大修安全壳整体试验是3号机组首次在役试验，本次试验汲取了秦山第二核电厂以往6次安全壳整体试验的经验和其他电厂的反馈，试验方案更加科学，试验的组织管理更为规范。文章对301大修安全壳整体试验的经验进行了论述和总结，希望对电厂以后的安全壳整体试验提供参考。

The Scheme Optimization and Management Innovation for the First Containment Integrated In-service Test of Nuclear Power Plant

The containment integrated test is a large-scale, high risk and very difficult test in pressurized water reactor nuclear power plants. By simulating peak pressure inside the containment in design basis accident conditions, measuring the total leakage rate of the containment with the peak pressure, and implementing the structure inspection test on several pressure levels, the containment＇s performance can be verified. Containment integrated test is an important witness point supervised by NNSA. The test results crucially decide the reactor to be started or not. The containment integrated test in 301 overhaul is the first in-service test of Unit 3. By the experience of the same 6 former tests in Qinshan Second Nuclear Power Plant and the feedback from other plants, the test scheme get more scientific and the organization management more standardized. This article discusses the containment integrated test in 301 overhaul and summarizes the experience to provide some references for the following containment integrated tests in the future.