国产先进压水堆核电厂SGTR事故质量释放与满溢分析研究  

Mass Release and Overfill Analysis of SGTR Accident for Domestic Advanced PWR

作　　者：贾斌 高新力 孟利利 石兴伟 靖剑平 马帅 JIA Bin;GAO Xinli;MENG Lili;SHI Xingwei;JING Jianping;MA Shuai(Nuclear and Radiation Safety Center,State Environmental Protection Key Laboratory of Nuclear and Radiation Safety Regulatory Simulation and Validation,Beijing.102488,China)

机构地区：[1]生态环境部核与辐射安全中心国家环境保护核与辐射安全审评模拟分析与验证重点实验室,北京102488

出　　处：《核科学与工程》2020年第5期836-843,共8页Nuclear Science and Engineering

基　　金：国家科技重大专项《核动力厂安全分析用计算机软件评估基准题及共享平台开发》资助项目(No.2019ZX06005001)。

摘　　要：本文应用RELAP5/mod3.3程序对国产先进压水堆机组进行全系统建模,然后根据安全分析报告中蒸汽发生器传热管破裂事故(SGTR)分析假设,针对事故造成的最大质量释放和破损SG最大水装量两种工况开展了事故分析研究。在研究中,重点关注了国产先进压水堆SGTR事故特点以及快速冷却系统(VDA)的运行性能。通过对两种工况计算结果的分析发现,虽然国产先进压水堆没有高压安注系统,然而通过快速冷却系统的运行,可以实现一回路冷却剂系统的快速降压和冷却,进而使中压安注系统可以尽快投入使用。后期通过操纵员的干预,破损SG传热管的泄漏可以被终止,机组进入安全稳定的运行状态。最终,事故造成的放射性后果在可接受剂量水平限值范围内,破损SG不会发生满溢现象。In this paper Domestic Advanced PWR model is established using RELAP5/mod3.3 code in detail.According to analysis assumptions in safety analysis report,research of SGTR accident for Domestic Advanced PWR is carried out.The max mass release of the accident and damaged SG max water volume are taken into account in the research for calculations respectively.During the research our main focus is on the characteristics of Domestic Advanced PWR SGTR accident and operation performance of vapor discharge appliance(VDA).Through the analysis of the calculation results of the two situations,it finds that although Domestic Advanced PWR has no high pressure safety injection system,however the rapid cooling and depressurization of the coolant system can be achieved through the operation of VDA,and then the medium pressure safety injection system invests as soon as possible.Later through the rational intervention of the operator,the ruptured SG heat transfer tube leaking can be terminated and the unit will be brought into a safe and stable state of operation.Finally the radioactivity consequence caused by the accident is within the acceptable dose level limit and the overflowing of the ruptured SG will never happen.

关 键 词：RELAP5 国产先进压水堆 SGTR 质量释放 满溢 快速冷却系统 

分 类 号：TL331[核科学技术—核技术及应用]