Effect of Different Designs for Loss of LBA on Core Damage Frequency
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摘要: 110 V直流电源系统系列A (LBA)承担重要的安全功能,目前国内M310机组针对LBA母线失电后有2种不同的设计方案。文中采用概率论方法,定量分析丧失LBA事件的堆芯损坏频率(CDF),对这2种设计方案的安全性进行评价。从降低堆芯损坏风险的角度看,LBA丧失后不联跳发电机变压器组全停保护是更为合理的设计。
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关键词:
- 概率安全分析(PSA) /
- 丧失直流电源 /
- LBA /
- 堆芯损坏频率(CDF)
Abstract: Direct current power LBA performs important safety function. There are two different designs for loss of LBA in domestic M310 units. This paper analyzes the core damage frequency of loss of LBA by using the probabilistic method, and evaluates the safety level of different designs. In terms of core damage risk, the design which unlocks the generator-transformer shutdown protect is more reasonable. -
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