Management of Single Point Vulnerability Components

This paper indicates the importance of classified management of components in view of different functions of plant components, presents the principles based on which Third Qinshan Nuclear Power Plant (TQNPP) implements the classified management of components, and introduces the concept of SPV component in nuclear power stations. It focus on expounding the analysis and identification of SPV systems and components, explaining the methods to determine the list of SPV key systems and to evaluate the system priority sequence; getting the SPV fault tree of the system and SPV points; classification for the SPV points, finding the SPV component chain. The management requirements and practice for SPV components are discussed from different viewpoints of component management.