Study on Stability Criteria for Leakage Rate Measurement of Non-adiabatic Containment
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摘要: 按照ANSI/ANS56.8和NB/T20018—2021等现行标准测量安全壳泄漏率时，均须假设安全壳绝热，因此，标准中的气体质量稳定准则在测量非绝热安全壳的泄漏率时会失效。为了探究非绝热安全壳的密封性评价方法，本研究提出了新的泄漏率稳定准则，并在中国核电工程有限公司廊坊研发基地非绝热科研安全壳上完成试验验证。结果表明，新的泄漏率稳定准则可以用于测量非绝热安全壳泄漏率。此外，某核电厂试验数据表明，新准则还可用于绝热安全壳的泄漏率测量，缩短试验时间。本研究结论可支撑应用科研类非绝热安全壳开展泄漏率研究，优化核电厂安全壳密封性试验技术。Abstract: Current standards such as ANSI/ANS56.8 and NB/T20018—2021 require the assumption of containment insulation for measuring the leakage rate of containment. The gas quality stability criteria in the standards will fail in the measurement of the leakage rate of non-adiabatic containment. In order to explore the sealing evaluation method of non-adiabatic containment, this study innovatively proposed a leakage rate stability criterion and completed experimental verification on the non-adiabatic scientific research containment at Langfang R&D Base of China Nuclear Power Engineering Co., Ltd. The results indicate that the new stability criterion for leakage rate can be used to measure the leakage rate of non-adiabatic containment. In addition, the test data of a certain nuclear power plant indicates that the new criterion can also be used for measuring the leakage rate of adiabatic containment, shortening the test time. The conclusion of this study can support the application of scientific research non-adiabatic containment to conduct leakage rate research and optimize the sealing test technology of nuclear power plant containment.
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图 1 CMPT平台试验安全壳内不同测点温度变化曲线
Figure 1. Changes of Temperature inside the Containment with the Environment during CMPT Platform Testing
图 2 CMPT平台安全壳模拟温度传递现象
Figure 2. Simulated Temperature Transfer Phenomenon in CMPT Platform Containment
图 3 CMPT平台安全壳模拟不同高度处壳内温度和压力时序关系
Figure 3. Temperature and Pressure Time Series Relationship at Different Heights in CMPT Platform Containment Simulation
图 4 CMPT平台安全壳模拟体的气体质量变化
Figure 4. Gas Quality Changes in CMPT Platform Containment Simulation
图 5 PCS平台安全壳温度变化及泄漏率失稳现象图例
Figure 5. Legend of PCS Platform Containment Temperature Changes and Leakage Rate Instability Phenomenon
图 6 PCS 平台安全壳泄漏率稳定准则参数曲线
Figure 6. Parameter Curve of PCS Platform Containment Leakage Rate Stability Criteria
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