ISI OF DRY STORAGE CASKS FOR SPENT NUCLEAR FUEL: LEVERAGING KNOWLEDGE FROM REACTORS

摘要

The need for clear guidance on inservice inspection (ISI) requirements for dry cask storage systems (DCSSs) is motivated by several systems reaching the end of their initial license term. Although there are significant differences between systems for dry storage of spent nuclear fuel and operating reactors, knowledge can be leveraged from ISI of reactors to the extent that it is appropriate. This paper provides an overview of characteristics and examination requirements for DCSSs as well as an overview of the ASME Boiler and Pressure Vessel Code Section XI ISI requirements for reactor components and NDE performance data based on inspection of reactor components. The analysis provides some insights with regard to suitable ISI requirements for DCSS components but also indicates that there are gaps with respect to application of these requirements directly to DCSS components.