European Clearinghouse: Report on ageing related events

Abstract

A physical ageing mechanism of SSC such as wear, tear, fatigue, corrosion, oxidation, loss of material strength, loss of insulation resistance, loss of elasticity (or other potentially significant ageing mechanism) are the main focus of this study. The analysis of ageing related events involved operating experience reported by NPP operators in France, Germany, USA and to IAEA/NEA International Reporting system, on operating experience for the past 20 years (i.e. 1990-2009). A list of ageing related events was populated. Each ageing related event contained in the list was analyzed; results of analysis were summarized for each component groups for which the ageing degradation appeared to be a direct cause. The most common degradation mechanisms / ageing effects for each specific component / commodity group, their risk significance and consequences to the plant performance are described. As the Commission’s in-house science service, the Joint Research Centre’s mission is to provide EU policies with independent, evidence-based scientific and technical support throughout the whole policy cycle. Working in close cooperation with policy Directorates-General, the JRC addresses key societal challenges while stimulating innovation through developing new standards, methods and tools, and sharing and transferring its know-how to the Member States and international community. Key policy areas include: environment and climate change; energy and transport; agriculture and food security; health and consumer protection; information society and digital agenda; safety and security including nuclear; all supported through a cross-cutting and multi-disciplinary approach. L D -N A -2 5 4 1 8 -E N -N