核动力厂物项安全分级与设计扩展工况物项质量要求  

Classification of Nuclear Power Plant Items and Quality Requirements on Design Extension Items

作　　者：孙造占[1] 沈伟[1] 黄炳臣[1] 邓冬[1] 

机构地区：[1]环境保护部核与辐射安全中心,北京100082

出　　处：《核动力工程》2014年第5期178-181,共4页Nuclear Power Engineering

摘　　要：为核动力厂物项进行恰当的分级是保证核动力厂具有良好安全性能和经济性能的重要手段。随着安全要求的不断提高以及设计理念的不断发展,物项分级的理论和方法也得到了进一步的发展。核动力厂应针对某些极不可能发生的严重事故进行设计已逐步成为共识,对"超设计基准"事故工况下需要保持安全功能的设备的质量要求随之成为焦点探讨问题。根据国内外相关实践和我国对新建核动力厂提出的更高安全目标以及国际上相关进展,建议对我国相关法规标准进行相应修改,并提出了相关物项质量要求的建议。Adequate safety classification for nuclear power plant items is an important means to ensure good safety and economic performances of the plants. Classification theories and methods further develop with the continuous improvements in nuclear safety goals and plant design philosophy. It becomes a consensus that future nuclear power plants should be explicitly designed against certain severe accidents though their occurrences are considered extremely improbable, and therefore, the quality requirements on equipment expected to function under ＂beyond design basis＂ accident conditions becomes a focused topic of discussion.Considering both domestic and international experience, as well as the higher safety goal required for China＇s new nuclear power plants and related development in other countries, relevant modifications are p roposed to be made to the current regulations and standards, and further, a set of equipment quality requireme nts is recommended.

关 键 词：核动力厂 超设计基准事故 安全分级 安全相关 设计扩展工况 

分 类 号：X591[环境科学与工程—环境工程]