| Reliability and Quality Design |
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| Research on optimization of integrated leakage rate measurement stage duration for reactor containment |
Rui LIU1( ),Qiang SHAN2,Zhaorui LIANG3,Qinmai HOU1() |
1.Nuclear and Radiation Safety Center of Ministry of Ecology and Environment, Beijing 100082, China
2.China Nuclear Power Operations Co. , Ltd. , Shenzhen 518000, China
3.Liaoning Hongyanhe Nuclear Power Co. , Ltd. , Dalian 116000, China |
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Abstract In order to reduce the risk of the integrated leakage rate measurement test of reactor containment and make the leakage rate test results more conservative and reliable, an optimization method for the integrated leakage rate measurement stage duration of containment for China's nuclear power plants is proposed based on the air stability criteria, function curvature criteria and data distribution criteria. Combined with the adjustment method for the containment integrated leakage rate measurement stage duration of the French Power Group, the determination requirements for the end of integrated leakage rate measurement test for containment were clarified, and an optimization method was proposed to add the criteria for determining the stability of air inside the containment and the termination of integrated leakage rate measurement. Taking 20 groups of containment pressure test samples as examples, the integrated leakage rate measurement stage duration for containment was calculated. The results showed that 17 groups of samples met the optimization conditions, of which 15 groups of samples were able to meet the integrated leakage rate measurement termination criteria within 16 h, and 2 groups of samples met all acceptance criteria within 19.25 h and 18.25 h, respectively. The proposed optimization method can shorten the duration of the integrated leakage rate measurement stage for reactor containment, which is more conservative and reliable than the French method.
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Received: 20 October 2023
Published: 04 March 2024
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Corresponding Authors:
Qinmai HOU
E-mail: liurui@chinansc.cn;houqinmai@chinansc.cn
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反应堆安全壳整体泄漏率测量阶段持续时间优化研究
为了降低反应堆安全壳整体泄漏率测量试验风险和使泄漏率测量结果更加保守和可信，基于空气稳定准则、函数曲率准则和数据分布准则，提出了一种适用于我国核电机组的安全壳整体泄漏率测量阶段持续时间的优化方法。结合法国电力集团的安全壳整体泄漏率测量阶段持续时间调整方法，明确了安全壳整体泄漏率测量试验结束的判定要求，并提出了增加安全壳内空气稳定判定准则和整体泄漏率测量终止判定准则的优化方法。以20组安全壳打压试验样本为例，计算了安全壳整体泄漏率测量阶段的持续时间。结果表明，共有17组样本满足优化条件，其中15组样本在16 h内满足整体泄漏率测量终止判定准则，其余2组样本分别在19.25 h和18.25 h内满足全部的验收准则。所提出的优化方法能够缩短反应堆安全壳整体泄漏率测量阶段的持续时间，其比法国的方法更为保守、可信。
关键词：
安全壳,
整体泄漏率,
测量阶段,
持续时间,
优化方法
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