池式钠冷快堆DCS优化对SBO事故安全影响的研究  

Study on Safety Impact of Pool⁃Type Sodium⁃Cooled Fast Reactor DCS Optimization on SBO Accidents

作　　者：张海波 王硕 滕腾 何庆镭 ZHANG Haibo;WANG Shuo;TENG Teng;HE Qinglei(China Nuclear Power Engineering Co,.Ltd,.Beijing 100840,China)

机构地区：[1]中国核电工程有限公司,北京100840

出　　处：《自动化仪表》2023年第S01期145-148,153,共5页Process Automation Instrumentation

摘　　要：池式钠冷快堆技术在我国快速发展。随着相关技术发展和工程经验的积累,为了在保障机组安全运行的基础上提升全寿期经济性,在新建快堆项目上以“集中显示、分布控制”技术思路为指引,对分布式控制系统(DCS)架构进行优化,以压缩DCS规模和相关电缆用量。对DCS的支持系统--交流不间断电源(UPS)和机柜间通风系统同步进行了优化,提升了DCS电源保障程度。优化通风系统运行方式并核算确认事故条件下环境温度满足DCS机柜运行要求。基于快堆固有安全性,分析上述优化内容对机组全厂断电(SBO)工况下的反应堆安全功能的影响,确保反应堆、人员、环境的安全。研究成果应用于池式钠冷快堆的新建项目,压缩了DCS整体成本,为同类堆型的DCS架构设计及相关安全影响分析提供参考。Pool⁃type sodium⁃cooled fast reactor technology is developing rapidly in China.With the development of related technology and the accumulation of engineering experience,in order to improve the whole⁃life economy on the basis of guaranteeing the safe operation of the unit,the architecture of the distributed control system(DCS)is optimized in the newly built fast reactor project with the technology idea of“centralized display and distributed control”as the guideline to reduce the scale of the DCS and the related cable usage.The alternating current uninterruptible power supply(UPS)and the ventilation system between cabinets,which are the support systems for DCS,are optimized simultaneously to improve the degree of DCS power supply guarantee.The operation mode of the ventilation system is optimized and the ambient temperature under accident conditions meets the operation requirements of the DCS cabinet is verified.Based on the inherent safety of fast reactors,the impact of the above optimization on the reactor safety function under the station black out(SBO)condition are analyzed to ensure the safety of the reactor,personnel,and the environment.The research results are applied to the new construction project of pool⁃type sodium⁃cooled fast reactor,which compresses the overall cost of DCS and provides a reference for the design of DCS architecture and related safety impact analysis of similar reactor types.

关 键 词：池式钠冷快堆 分布式控制系统 架构优化 电源保障 升温模拟 全场断电事故 反应堆安全 

分 类 号：TH86[机械工程—仪器科学与技术]