摘要：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.
关键词：VVER-1000& VVER-1200 reactor facilities ; long-term operation ; steam generator ; weld of primary circuit header to steam generator branch ; corrosion-mechanical damage in operation
