基于MANTA/SMART三维物理热工耦合的落棒事故分析  

Control Rod Drop Accident Analysis Based on Coupled 3D Neutronics/ Thermal-hydraulics with MANTA/SMART Codes

作　　者：冯英杰 李昌莹 肖红[2] 胡友森 FENG Yingjie;LI Changying;XIAO Hong;HU Yousen(China Nuclear Power Technology Research Institute,Shenzhen 518031,China;Nuclear and Radiation Safety Center,Ministry of Environmental Protection,Beijing 100082,China)

机构地区：[1]中广核研究院有限公司,广东深圳518031 [2]环境保护部核与辐射安全中心,北京100082

出　　处：《原子能科学技术》2020年第2期281-287,共7页Atomic Energy Science and Technology

摘　　要：传统CPR落棒事故分析采用保守的确定论分析方法,设计保守性较大,已制约了机组的持续改进及后续堆型的研发。为进一步挖掘落棒事故的热工设计裕量,本文以某大型压水堆为研究对象,建立了基于MANTA/SMART程序三维物理热工耦合的落棒事故分析方法,并与CPR落棒分析方法的过程及结果进行了对比分析。研究结果表明,基于MANTA/SMART的三维落棒事故分析方法合理可行,能更真实全面地反映反应堆瞬态过程中的参数特征,并能有效挖掘出落棒事故分析的安全裕量。The determinist approach adopted in CPR control rod drop accident(CRDA) analysis appears so conservative that restricts the continual improvement as well as development and research. To increase the safety margin of CRDA, three-dimensional analysis was conducted based on the coupled 3 D neutronics/thermal-hydraulics of MANTA/SMART codes. The analysis process and results were compared with those of CPR method. According to the results, the three-dimensional CRDA analysis method based on MANTA/SMART codes is found to be feasible and reasonable, which is capable to reflect realistically and comprehensively the parameter characteristics during the transient. Besides, the three-dimensional method shows a great potentiality to increase the safety margin of CRDA.

关 键 词：MANTA/SMART 三维物理热工耦合 落棒事故 

分 类 号：TL364.4[核科学技术—核技术及应用]