【摘要】 加速器驱动系统(ADS)中次临界堆芯的功率水平依靠强流质子轰击散裂靶产生的中子源来维持。加速器较为频繁的失束问题,必将对ADS次临界反应堆安全性产生影响。研究了ADS系统失束事故特性,设计开发出具有较强针对性的用于ADS失束事故分析软件,对加速器驱动快中子次临界反应堆的动态响应开展了初步研究。结论表明仅靠断束停堆,仍有可能危及次临界反应堆的安全性。建议增设辅助停堆保护系统以提高ADS安全性。更多还原

【Abstract】 Because the maintain of power level in Accelerator Driven System(ADS) relys on the neutron source generated through intensive proton beam hitting spallation target,the frequent beam trips will influence the subcritical reactor safety of ADS.Beam trip accident characteristics in ADS is studied in this paper,and the special software-SIMULINK-ADS dedicating to ADS beam trip accident is designed and developed.The dynamic characteristics of accelerator-driven fast neutron breed subcritical reactor is Preliminarily researched.At last the discussion has clearly demonstrated that shutdown of the reactor depending on shutoff of the beam signal will not assure automatic safety.It needs to add the assistant protect system to enhance the safety of ADS.更多还原