基于FSS对二次侧非能动余热排出系统的验证  

Verification of Advanced Secondary Passive Residual Heat Removal System Based on Full-Scope Simulator

作　　者：刘金超 王童生 林耀祖 张恒 沙睿[3] LIU Jinchao;WANG Tongsheng;LIN Yaozu;ZHANG Heng;SHA Rui(China Nuclear Power(Beijing)Simulation Technology Co.,Ltd.,Shenzhen 518031,Guangdong,China;School of Computer Science and Technology,Chongqing University of Post and Telecommunications,Chongqing 400065,China;China Nuclear Energy Association,Beijing 100048,China)

机构地区：[1]中广核(北京)仿真技术有限公司,广东深圳518031 [2]重庆邮电大学计算机科学与技术学院,重庆400065 [3]中国核能行业协会,北京100048

出　　处：《南方能源建设》2022年第2期95-100,共6页Southern Energy Construction

基　　金：国家自然科学基金资助项目“基于多传感成像的EAST托卡马克上光学等离子体边界实时重建研究”(12005030)。

摘　　要：[目的]作为应对全厂断电事故(SBO)所做的重要设计改进项,二次侧非能动余热排出系统(ASP)基于蒸汽发生器(SG)的二次侧闭式自然循环,在全部补水丧失的情况下,可以有效导出堆芯余热。[方法]基于全范围模拟机Full Scope Simulator(简称FSS),在模拟机平台引入SBO+SBO柴油机失效+ASG气动泵失效事故工况,通过仿真模拟的方式,验证ASP系统对机组一、二回路的影响。[结果]仿真结果表明:ASP系统投运后,堆芯余热被有效导出,运行4 h后,SG内水位可恢复至8.6 m,SG内压力降至1.2 MPa(a),堆芯出口温度降至约为209℃,堆芯饱和温度裕度大于20℃,堆芯不存在融毁风险,事故处于可控状态。[结论]ASP系统满足设计工况需求,可实现堆芯余热的长期有效导出。[Introduction]As an important design improvement to cope with the station black out(SBO)accident,the advanced secondary passive residual heat removal(ASP)system is based on the closed natural circulation of secondary side of the steam generator(SG),can effectively remove the residual heat of the reactor core in the case of total loss of feedwater.[Method]Based on Full-scope Simulator(FSS),the paper introduced the SBO superimposed SBO diesel engine failure and ASG pneumatic pump failure accident conditions on the simulator platform,and verify the influence of the ASP system for the primary and secondary loops of nuclear plants in accident conditions by using the simulation method.[Result]The simulation results we obtained demonstrate that after the ASP system was put into operation,the residual heat of the core was effectively removed.After 4 hours,the water level of the SG recover to 8.6 m,the pressure of the SG dropped to 1.2 MPa(a),the core outlet temperature dropped to about 209℃,and the margin of core saturation temperature is greater than 20℃,there is no risk of meltdown of the core,and the accident is in a controllable state.[Conclusion]The ASP system meets the requirements of the design conditions,and can realize the long-term and effective removal of the residual heat of the reactor core.

关 键 词：核电厂 全厂断电事故 蒸汽发生器 全范围模拟机 FSS 二次侧非能动余热排出系统 ASP 仿真验证 

分 类 号：TL4[核科学技术—核技术及应用] TL732