基于多重参数综合监测方法的核电厂电缆非金属材料一致性研究

Research on Multi-parameter Comprehensive Monitoring Method based on the Consistency of Non-metallic Materials of Nuclear Power Plant Cables

鉴于传统核电厂实际供货电缆与质量鉴定电缆一致性监管存在的问题,本研究基于核电厂电缆非金属材料体系的特点,选取材料典型微观性能指标,采用数理统计与分析方法,经过离群值剔除、精密度和准确度检查、相关度检验、准确率验证等过程,建立了一种采用多重参数评价核电厂电缆用非金属材料一致性的系统分析方法,包括密度、傅立叶变换红外光谱(FTIR)、差示扫描量热(DSC)、氧化诱导温度(OITP)、热重(TG)和电感耦合等离子体-发射光谱(ICP-OES)性能指标。与传统单一检测手段或简单组合相比,本评价方法经过系统论证和检验,能够有效、快速、准确地监测不同批次实际供货电缆与质量鉴定电缆非金属材料一致性,具有样品量小、微损、测试周期短、价格低等优点,为实现核级电缆一致性监管提供优化方案。

In view of the problems in the conventional supervision of the consistency between the actual supply and the quality identification for nuclear power plant cables,based on the characteristics of the non-metallic material system of the cables,typical micro-performance indicators of the materials were selected,mathematical statistics and analysis methods were adopted,through the processes of elimination of outliers,precision and accuracy inspection,correlation inspection,accuracy rate verification,etc.,thereafter a systematic analysis method for evaluating the consistency of non-metallic materials for nuclear power plant cables using multiple parameters has been established,including density,FTIR,DSC,OITP,TG and ICP-OES performance indicators.Compared with the conventional single detection method or their simple combinations,this consistency evaluation method has been systematically demonstrated and tested,which can effectively,quickly and accurately monitor the consistency of the non-metallic materials of the actual supply cables of different batches and the quality identification cables,and has advantages of small sample volume,micro-loss,short test cycle,low price,etc.,to provide optimization scheme for the implementation of nuclear-level cable compliance supervision.