摘要
应用安全壳内氢气安全分析程序(GASFLOW)模拟了岭澳核电站二期在失去给水+未能紧急停堆的预计瞬变(LOFW+ATWS)事故下安全壳内氢气和水蒸汽的行为,对事故进程中氢气的风险进行了安全分析,特别是对氢气缓解系统的效果进行了评价。模拟结果说明,安全壳内温度与压力的变化与水蒸汽的喷放密切相关;水蒸汽在安全壳内会呈现一定的分层现象;泄压箱隔间与稳压器隔间在氢气释放峰值阶段可能发生火焰加速现象。
This paper applies the three dimensional CFD code GASFLOW to simulate the behavior of hydrogen and steam under hypothetical LOFW＋ATWS accident.Analysis shows that the average temperature and pressure are dominated by the inventory of the steam released to the containment.The calculation results also show that during the hydrogen release time,the average recombine rate of the hydrogen mitigation system can reach 40g/s,but the flame acceleration criterion in the code assess that the flame acceleration may occur in quench tank compartment and pressurizer compartment during hydrogen release peak.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2011年第1期34-38,52,共6页
Nuclear Power Engineering
