【作者】 孙英学； 吴万军； 谢海； 刘文进； 郑连纲； 何风；

【Author】 SUN Ying-xue;WU Wan-jun;XIE Hai;LIU Wen-jin;ZHENG Lian-gang;HE Feng;National Laboratory of Science and Technology on Reactor System Design Technology;

【机构】 中国核动力研究设计院核反应堆系统设计技术国家级重点实验室；

【摘要】 LBB技术是保证反应堆运行安全性和可靠性的一种先进的设计技术,研究和掌握LBB技术并应用LBB技术对"华龙一号"主管道和波动管进行设计是"华龙一号"工程的关键设计路径。本文介绍了LBB技术完整的设计流程,包括:LBB技术实施先决条件评估、系统力学分析、分析位置的选取及裂纹的假设、疲劳裂纹扩展分析、泄漏率计算程序的编制及验证、贯穿裂纹泄漏率计算、裂纹稳定性分析等,突破了技术难度和软件禁售,研究和掌握了LBB技术并应用于"华龙一号"的主管道和波动管设计,达到了三代核电的技术要求。更多还原

【Abstract】 LBB technology is an advanced design technology to ensure the safety and reliability of reactor operation.It is the key design path of "Hualong one" to study and master LBB and apply LBB technology to design of "Hualong one" primary piping and surge line.This paper introduces the complete design flow of LBB.It includes:LBB implementation prerequisite evaluation,system mechanics analysis,analysis position selection and crack postulated,fatigue crack propagation analysis,leakage rate calculation program development and verification,through-wall crack leakage rate calculation,crack stability analysis, etc.It breaks through the technical difficulty and software ban,studies and grasps the LBB technology and applies it to the design of "Hualong one" primary piping and surge line,which meets the technical requirement of the third generation nuclear power plant.更多还原