AGE 60+ - APPLICABILITY OF AGEING RELATED DATA BASES AND METHODOLOGIES FOR ENSURING SAFE OPERATION OF LWR BEYOND 60 YEARS

摘要

The AGE60+ project aimed towards the application of ageing related data bases and methodologies to ensuring the safe operation of Light Water Reactors beyond 60 years, and the longer-term safe storage of waste. It acted by encouraging European researchers to share data in order to maximize its utility. As an initial step, the AGE60+ consortium considered the development and utilization of a number of databases set up to collate data and derive information relevant to the management of nuclear power plant. This review was used to identify the factors which lead to a database successfully making a useful contribution. The AGE60+ project has been a very fruitful collaboration. It has: 1. Raised the concept of sharing data and setting up databases related to the ageing of concrete in waste disposal, and received a generally positive response to this first step. 2. Identified an area in which a new database would provide the opportunity to advance predictive modeling of the degradation of internals. 3. Collated and reviewed data on the thermal ageing of low alloy steels. 4. Identified information gaps in the area of internals degradation and the thermal ageing of low alloy steel components. 5. Produced an up-to-date database on WWER-440 RPV steel embrittlement. 6. Produced a new embrittlement trend curve (ETC), relating the fracture toughness transition temperature to fluence and composition for WWER-440 weld and base metal. 7. Expanded and utilized a database on MnMoNi steel embrittlement. This AGE 60+ project was realized as a part of the NUGENIA+ Call and lasted 18 months with participating organizations: UJV Rez a.s., Czech Republic, AREVA GmbH, Germany, CIEMAT, Spain, MTA EK, Hungary and NNL, UK as a leading organization.