原子能科学技术2016，Vol.50Issue(6)：1072-1077,6.DOI:10.7538/yzk.2016.50.06.1072
严重事故下蠕变诱发RCS破裂的概率评估
Probabilistic Assessment of Creep Induced RCS Rupture in Severe Accident
喻新利 1朱文韬 1杨晓卿 1郑向阳 2詹佳硕2
作者信息
- 1. 中国核电工程有限公司,北京 100840
- 2. 环境保护部 核与辐射安全中心,北京 100082
- 折叠
摘要
Abstract
The creep induced rupture of the reactor coolant system (RCS) may arise in severe accident,which may bypass the containment for creep induced steam generator tube rupture (SGTR) or depressurize the RCS quickly for creep induced hot leg or surge line break.Therefore,it is essential for severe accident analysis and especially for level 2 probabilistic safety analysis (PSA) to evaluate the probability of creep induced RCS rupture in severe accident.In this paper,the deterministic model for creep induced RCS rupture was constructed based on creep rupture model,considering steam generator tube flaws.On the basis of the deterministic model,the probabilistic program was developed to evaluate creep induced RCS rupture in severe accident using Latin hypercube sampling method to consider the uncertainties for important parameters.Then the probabilities of creep induced RCS rupture for representative accident sequences were assessed.It is concluded that there are certain probabilities for creep induced SGTR and high probabilities for creep induced hot leg or surge line failures for high pressure accident sequences.关键词
严重事故/蠕变诱发RCS破裂/二级PSA/拉丁超立方体抽样Key words
severe accident/creep induced RCS rupture/level 2 PSA/Latin hypercube sampling分类
能源科技引用本文复制引用
喻新利,朱文韬,杨晓卿,郑向阳,詹佳硕..严重事故下蠕变诱发RCS破裂的概率评估[J].原子能科学技术,2016,50(6):1072-1077,6.
