安全级仪控系统设备鉴定样机代表性分析

安全级仪控系统是核电站的中枢神经,是核电厂安全运行必不可少的系统设备.为了确定安全级仪控系统的可靠性和安全性,设备鉴定成为其主要技术手段.受成本和时间等因素限制,设备鉴定通常使用具有一定代表性的鉴定样机来完成相关试验.因此,核电厂安全级仪控系统鉴定样机的代表性是鉴定结论能否适用于工程产品的关键.NB/T 20344和I...

Representativeness Analysis for Qualification Sample of Instrument and Control System Equipment for Class 1E

Class 1E instrument and control(I&C)system is nervous central of the nuclear power station,and it is necessary for safe operation of the nuclear power station.To confirm the reliability and safety of Class IE I&C system,the equipment quality,equipment qualification(EQ),is the main method.Due to the limitation of cost and time,EQ sample which can represent the engineer product will be used by EQ testing.So,the representativeness of the EQ sample for Class IE I&C system of the nuclear power station are critical for whether the result of EQ is appropriate for engineer product.NB/T 20344 and EEE standards put forward some requirements and analysis approach for representativeness of EQ sample.Based on relevant regulations and standards,the representativeness of the EQ sarmple is discussed,the elements of qualitative analysis are described,and new approach of quantitative analysis is proposed based on cofficient of conformity.And,this approach can improve the reliability of the representativeness analysis result.