核电厂可修设备失效数据的处理方法

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Failure Data Process Considering Trend of Failure Rate for Repairable Equipments in Nuclear Power Plants

1. Nuclear Safety Research Center, China Nuclear Power Engineering Co. Ltd., Beijing, 100084, China;
2. Department of Engineering Physics, Tsinghua University, Beijing, 100084, China;
3. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, China

摘要: 针对核电厂设备可靠性评估对失效数据处理的需求,基于统计的经典寿命数据处理方法分析了核电厂可修设备失效数据处理中的缺点,提出应用基于威布尔(Weibull)过程的数据处理方法处理可修设备现场数据,并以某核电厂定子冷却水用泵失效数据为例进行了实例计算,对两种方法处理结果进行了比较分析。计算证明,引入威布尔过程拟合数据处理方法可更好地符合可修设备失效特点,且计算过程不复杂。
- 可修设备 /
- 更新过程 /
- 趋势检验 /
- 威布尔过程 /
- 分布拟合
Abstract: To solve the problem of failure data processing for reliability assessment for repairable facilities in nuclear power plants,a improved approach based on the renewal theory,trend testing and Weibull process（a kind of NHP）is proposed.After analyzing the error risk of traditional life data processing methods,an actual example is calculated based on the failure data of water-cooling pumps in generator stator at some nuclear power stations to compare the two processing methods.The result proves that Weibull process fitting reflects the failure characteristics of repairable equipments failures with less complicate calculation process.
- Repairable facilities /
- Updating process /
- Trend test /
- Weibull process /
- Distribution fitting