Possible corrosion-mechanical damages of welded joints and their impact on long-term operation of equipment

Specific features of corrosion-mechanical damages of primary circuit header to steam generator vessel branch welds at VVER-440/1000 NPPs and their influence on safety and economic efficiency during long-term operation are analysed

Complex treatment of erosion-corrosion issues for piping

Erosion-corrosion damages piping sufficiently affect safety and economic efficiency of NPP long-term operation up. Due to the multifactorial nature of the damage mechanism under consideration, an integrated approach is required to minimize its negative effects

NPP Unit Life Management based on Digital Twin Application

IAEA activities on ageing management started in 1990 are a part of NPP Units life management or License Renewal as specified in national regulatory documents of member countries. Development of digital technologies makes it possible to manage lifetime NPP Unit issues in effective manner by application of Digital Twin

Possible in-service damages of steam generators at VVER-1000 and VVER-1200 NPP units and their impact on long-term operation

Specific features of corrosion-mechanical damages of primary circuit header to steam generator vessel branch welds at VVER-1000 NPPs and their impact on safety and economic efficiency during long-term operation are analysed. Measures to avoid the damages for similar zones of VVER-1200 steam generators are discussed