哈尔滨工程大学学报2024，Vol.45Issue(12)：2281-2289,9.DOI:10.11990/jheu.202302018
核安全壳在钢衬里锈蚀情况下的概率安全分析
Probabilistic safety analysis of nuclear containment under steel liner corrosion conditions
摘要
Abstract
The sealing failure pressure under corrosion conditions is analyzed through numerical simulations to inves-tigate the effect of steel liner corrosion on the leak tightness of nuclear containment.The fragility of the containment subjected to internal pressure is examined,with the effect of statistical uncertainty on fragility results clarified.Safety margins and total failure probabilities for varying degrees of steel liner corrosion.Results indicate that the sealing failure pressure decreases with the increase in corrosion rate.Moreover,as the corrosion rate of the steel liner increases,the fragility curve of the containment subjected to internal pressure shifts to the left on the coordi-nate axis.With the analyzed sample used in this paper,the effect of statistical uncertainty on the fragility results is relatively small.In general,the containment investigated satisfies the performance requirements of a safety margin of at least 2.5 and a total failure probability of not more than 0.1,even with a local corrosion rate of up to 30%.These findings provide valuable insights for the probabilistic safety assessment of containment structures under steel liner corrosion conditions.关键词
安全壳/钢衬里/锈蚀/密封性/统计不确定性/易损性分析/安全裕度/概率安全评估Key words
containment/steel liner/corrosion/leak tightness/statistical uncertainty/fragility analysis/safety margin/probabilistic safety assessment分类
信息技术与安全科学引用本文复制引用
李鑫波,贡金鑫..核安全壳在钢衬里锈蚀情况下的概率安全分析[J].哈尔滨工程大学学报,2024,45(12):2281-2289,9.基金项目
国家重点研发计划(2019YBF1900903) （2019YBF1900903）
国家自然科学基金资助项目(51978125) （51978125）
国家自然科学基金联合基金重点项目(U22B20125). （U22B20125）
