核电站主控室可居留性内漏试验验证技术应用研究
Research on application of verification technology for main control room habitability in-leakage test in nuclear power plants
摘要：
核电站主控室可居留性内漏试验是保障事故工况下人员具有可居留性的关键环节。目前广泛采用的试验方法是恒定流量法,但存在测量结果不确定度高、无法验证准确性等问题。基于安全壳密封性试验的验证思路,本文提出一种新的验证方法,即在完成初始内漏试验测量后,通过人为引入已知内漏量,对叠加后的工况进行二次测量,2次测量结果的差值与理论值进行对比,以评估测量的准确性。实验室与工程现场应用结果表明:该验证技术测量偏差较小,结果可靠,适用于工程实践,但仍需优化以缩短试验周期,进一步提升其实用性。
Abstract：
The main control room habitability in-leakage test of a nuclear power plant is a key link to ensure that personnel are habitable under accident conditions. The currently widely used experimental method is the constant flow method, but there are problems such as high measurement uncertainty and inability to verify accuracy. Based on the verification idea of the containment sealing test, this paper proposes a new verification method. After completing the initial in-leakage test measurement, a known internal leakage is artificially introduced, and a second measurement is taken under the superimposed condition. The difference between the two measurements is compared with the theoretical value to assess the accuracy of the measurement. Laboratory and engineering field application results show that this verification technology has small measurement deviations, reliable results, and is suitable for engineering practice, but still needs to be optimized to shorten the test cycle and further improve its practicality.
Keywords:nuclear power plant; main control room habitability in-leakage test; internal leakage; verification technology; constant flow method; tracer gas