摘要
根据熔融物堆内滞留(IVR)的有效性评价方法——风险导向的事故分析方法(ROAAM)开发了IVR有效性评价的集总参数程序MOPOL,并对其进行验证.同时,分析了ROAAM评价过程中的破口尺寸、堆芯平均有效辐照时间及堆内材料质量等关键参数对IVR有效性评价结果影响的不确定性.结果表明:在大破口尺寸事故和辐照时间较长的工况下,压力容器发生热负荷失效的安全裕量较小;适当增加压力容器内的一些结构质量,可以提高IVR的有效性.
A program named MOPOI. based on lumped parameter model was developed to assess IVR (in vessel core debris retention) effectiveness according to the IVR assessment method- ROAAM (risk oriented accident analysis methodology), then the program was validated. Regarding the key parameters in IVR assessment such as break size, average effective time of irradiation and structure mass in the vessel, uncertainty analysis was made to evaluate the effects of these parameters to IVR effectiveness. The analy sis results indicate that in the case of larger break accident and longer irradiation time, safety margins of the pressure vessel wall to thermal failure are smaller; in addition, properly increase structures mass in the pressure vessel can enhance IVR effectiveness.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2012年第9期1498-1502,1508,共6页
Journal of Shanghai Jiaotong University
关键词
熔融物堆内滞留
事故缓解
二层集总参数模型
不确定性
in-vessel core debris retention (IVR)
accident mitigation
2-layer lumped parameter model
uncertainty
作者简介
杨晓(1976-),女,浙江省绍兴市人,博士生,主要研究方向为核电厂严重事故分析.Email:meilo@163.com.
杨燕华(联系人),女,教授,博士生导师,电话(Tel.):021-34205301;E-mail:yanhuay@sjtu.edu.cn.