HFETR外电源丧失叠加失流事故分析

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Analysis of Loss of Offsite Power and Loss-of-flow Accident of HFETR

摘要: 假设高通量工程试验堆(HFETR)在70 MW功率运行中突遇外电源丧失,冷却水失流,4台运行的主泵中3台卡轴,反应堆自动保护停堆。在此超设计基准事故下,对无应急措施和有应急措施两种状况下燃料元件壁温、空泡份额和平衡态含汽率等参数随时间的变化进行了分析。结果表明:事故后反应堆不干预的安全时间为9221 s;事故后900 s投入冲洗给水泵,能确保反应堆安全。
- HFETR /
- 冷却水失流 /
- 空泡份额 /
- 限值温度
Abstract: The High Flux Test Reactor（HFETR） was assumed encountering blackout and three of four pumps seizure during 70 MW operation,then the primary and secondary loop lost flow,and the reactor shut down automatically.Variation of temperature of hot pipe wall,void fraction and equilibrium quality with time were analyzed with and without intervening respectively in this paper.The results showed that the safe time without intervening was 9221 s after accident and if the feeding water pumps were turned on in 900 s after accident,the safety of the reactor could be ensured.
- HFETR /
- Loss of flow /
- Void fraction /
- Temperature limit