小堆验证平台主回路系统建模仿真研究

The Research of Modeling and Simulation for Main Loop of ACP100 FES

采用NESTLE程序进行三维堆芯物理建模,并采用轻水堆最佳估算程序RELAP5建立小堆主回路相关系统和非能动相关系统模型,通过满功率稳态工况及不同瞬态工况进行仿真验证。结果表明,建立的模型能正确地反映系统特性,非能动相关系统在事故进程中能为堆芯提供持续的冷却,达到了预期结果,堆的设计和安全系统设计在事故工况下能够保证反应堆的安全。

Uses NESTLE software to establish reactor core model and uses RELAP5 software to establish primary loop systems and passive systems models.A 100%steady-state and several transients are simulated and verified,the results shows the model can reflect system characteristics accurately,the passive system can supply cooling for reactor core continuously during the accidents,the design of reactor and safety system can ensure system security during the accidents.