大亚湾核电站全厂断电事故及第5台应急柴油机的概率安全评价

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Probabilistic Safety Assessment of Station Blackout Accident and 5th Emergency Diesel in Daya Bay NPP

1. Key Laboratory of Nucleav Reactor System Design Technology, Nuclear Power Institute of China, Chengdu, 610041, China;
2. Daya Bay NPP, Shenzhen, Guangdong, 518124, China

摘要: 对大亚湾核电站全厂断电事故(SBO)及第5台应急柴油机改进项目进行了概率安全评价(PSA),给出了电源不可恢复因子的计算方法,并对第5台应急柴油机的接入时间进行了敏感性分析。研究结果表明,全厂断电引起的堆芯损坏频率(CDF)较大,增加第5台柴油机对降低堆芯损伤风险有明显的好处,而该台柴油机接入时间的长短对降低堆芯损坏频率有较大影响。
- 概率安全评价 /
- 全厂断电 /
- 应急柴油机 /
- 堆芯损坏频率 /
- 电源不可恢复因子
Abstract: In this paper, probabilistic safety assessment （PSA） of the station blackout （SBO） and 5th emergency diesel in Daya Bay NPP has been carried out, the calculation method of non-recover factors of power supplies is given, and sensitivity analysis on the connection duration of 5th emergency diesel has been executed. It is concluded that the core damage frequency （CDF） induced by SBO is relatively large, the addition of 5th emergency diesel is very helpful for the CDF reduction, and the connection duration of this diesel has great effect on the CDF reduction.
- Probabilistic Safety Assessment （PSA） /
- Station blackout /
- Emergency diesel /
- Core Damage Frequency （CDF） /
- Non-recover factors of power supplies