二氧化碳冷却反应堆始发事件和验收准则研究  

Study of initial events and safety criteria for CO2 cooled reactor

作　　者：毛辉辉[1] 张丹[1] 高春天 吴攀 刘余[1] 毕树茂[1] 米争鹏 MAO Huihui;ZHANG Dan;GAO Chuntian;WU Pan;LIU Yu;BI Shumao;MI Zhengpeng(Science and Technology on Reactor System Design Technology Laboratory,Nuclear Power Institute of China,Chengdu 610213,China;Xi'an Jiao Tong University,Xi'an 710049,China)

机构地区：[1](中国核动力研究设计院核反应堆系统设计技术重点实验室,成都610213 [2]西安交通大学,西安710049

出　　处：《核技术》2020年第6期21-28,共8页Nuclear Techniques

基　　金：国家自然科学基金青年科学基金(No.11605132)资助。

摘　　要：直接循环二氧化碳冷却反应堆作为一种新概念反应堆,和直接循环沸水堆、间接循环氦气冷却堆、压水堆等相比,其系统配置及安全特性不同,安全设计中所考虑的始发事件与安全准则与现有反应堆存在差异。始发事件清单是反应堆设计的重要输入项,是反应堆系统安全设计的基础;验收准则为安全分析结果是否符合安全要求提供判据。本文采用主逻辑图分析方法,针对直接循环二氧化碳冷却反应堆开展研究,初步提出了反应堆安全设计所需要的始发事件,并根据设计对象特点,基于现有的压水堆、气冷堆及新堆等工程经验,初步给出了验收准则。该研究为直接循环二氧化碳冷却核动力系统安全设计奠定基础,也为直接循环反应堆的安全设计提供参考。[Background]As a new concept reactor,direct circulation CO2 cooled reactor has different system configurations and safety characteristics compared with direct cycle boiling water reactor,indirect cycle helium gas cooled reactor and pressurized water cooled reactor,hence the CO2 cooled reactor has different initial events and safety criteria.The selection of initial events is the foundation for the safety design of reactor whilst the safety criteria provides criterion for whether the safety analysis results meet the safety requirements.[Purpose]This study aims at the initial events and acceptance criteria for the safety design of CO2 cooled reactor.[Method]The main logic diagram analysis method was employed to study the initial events of the direct circulation CO2 cooled reactor.Based on the existing engineering experience of pressurized water reactor,gas cooled reactor,the acceptance criteria for the direct circulation CO2 cooled reactor were proposed according to its own characteristics.[Results&Conclusions]The proposed initial events and acceptance criteria required for safety analysis are applicable to direct circulation reactor,providing a basis for the safety analysis of CO2 cooled nuclear power plant,and gives an important reference for the safety design of direct cycle circulation reactors.

关 键 词：二氧化碳冷却反应堆 直接循环 始发事件 安全准则 

分 类 号：TL364[核科学技术—核技术及应用]