摘要
以CPR1000核电站为研究对象,采用RELAP5/MOD3.2轻水堆瞬态分析程序,对系统进行合理简化并建模,模拟系统在全厂断电事故下的瞬态响应过程,研究全厂断电事故发生后辅助给水(AFW)的投入对缓解全厂断电事故的能力。计算结果表明:断电事故发生后,主给水丧失导致一回路压力和冷却剂平均温度在断电后6s达到峰值;辅助给水投入约200s后,一回路因热阱丧失而引起的温度和压力升高能有效地得到缓解,为交流电源的恢复及余热排出系统的投入赢得了更多的时间。
The transient characteristic of the simplified system for CPR1000 under the station blackout（SBO） accident was simulated by use of RELAP5/MOD3.2 code,and the capability of mitigating accident results after auxiliary feedwater（AFW） system operating was also analyzed.The calculation results show that： As a result of the loss of the main water supply,the average temperature and the pressure of the primary system reach their maximum in 6 s after SBO accident;the increasing of temperature and pressure caused by the loss of heat sink is effectively mitigated in about 200 s after the input of auxiliary feed water,and this will win more time for the recovery of AC power and the input of residual heat removal system.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2012年第5期565-569,共5页
Atomic Energy Science and Technology
