摘要
长循环压水堆堆芯引入可燃毒物钆,以控制寿期堆芯初临界硼浓度并确保功率峰因子满足限值要求,钆的燃耗将释放正反应性,引起堆芯硼浓度的非线性下降,给长循环停堆日期预测造成干扰。为准确预测长循环的停堆日期,通过对实测硼降外推预测法、理论循环长度预测法、启动物理试验修正预测法和综合预测法的探讨和研究,结合核电厂实际运行数据验证表明,采用综合预测法具有更高的精度,更适用于长循环燃料管理策略下的停堆日期预测。
The use of burnable poison Gd in long-cycle PWR core purposed at controlling the critical boron concentration at BOL and fulfilling the limit of FQ will cause the release of positive reactivity while Gd burns,resulting in nonlinear boron decrease and interfering the shutdown date forecast.In order to accurately predict the shutdown date of long-cycle PWR,Measured boron decrease forecast method,theoretical calculation forecast method,physics test correction forecast method and synthetic forecast method are studied in this paper,which have been verified by the operation data of PWR NPP.The synthetic forecast method has more precision and can be used to forecast the shutdown date in long-cycle PWR.
作者
项骏军
詹勇杰
邓志新
廖泽军
叶国栋
XIANG Jun-jun;ZHAN Yong-jie;DENG Zhi-xin;LIAO Ze-jun;YE Guo-dong(Nuclear Power Operation Management Co.,Ltd.,Haiyan,Zhejiang Prov.314300,China;Nuclear Power Operation Research(Shanghai)Co.,Ltd.,Shanghai 200126,China)
出处
《中国核电》
2022年第5期741-744,共4页
China Nuclear Power
关键词
长循环
停堆日期
停堆燃耗
预测
long-cycle
shutdown date
shutdown burnup
forecast
