基于PepS管道热疲劳分析中瞬态处理方法的研究  

Research on Transient Processing Method in Thermal Fatigue Analysis of Pipeline Based on PepS Software

作　　者：付罗均 韩学师 罗光国 Fu Luojun;Han Xueshi;Luo Guangguo(CNNC Chengdu Haiguang,Chengdu 610041)

机构地区：[1]中核集团成都海光核电技术服务有限公司,成都610041

出　　处：《中国特种设备安全》2022年第2期31-36,共6页China Special Equipment Safety

摘　　要：管道热疲劳是管道损伤的主要原因之一,存在疲劳破坏风险的核安全级管道均需要进行疲劳分析.核电厂管道热疲劳分析的难点在于瞬态工况的处理,需要充分地分析每个物理瞬态中所包含的应力幅值变化情况.在RCC-M规范下,以某核电站安注管道的典型瞬态工况为例,本文采用PepS软件分析了该管道的疲劳寿命,并总结出适用于一级管道热疲劳分析的瞬态处理方法,为核级管道的安全评定提供工程经验.Thermal fatigue is one of the main causes of pipeline damage,and fatigue analysis is needed for nuclear safety grade pipelines with fatigue failure risk.The difficulty of thermal fatigue analysis of nuclear power plant pipeline lies in the treatment of transient conditions,which requires a full analysis of the variation of stress amplitude contained in each physical transient.Under the RCC-M standard,taking the typical transient conditions of a nuclear power station,s injection pipe as an example,this paper analyzes the fatigue life of the pipe by using PepS software,and summarizes the transient treatment method applicable to thermal fatigue analysis of the nuclear grade pipelines,which provides engineering experience for the safety assessment of nuclear grade pipelines.

关 键 词：核级管道 热梯度 瞬态包络 瞬态拆分 

分 类 号：X933.4[环境科学与工程—安全科学]