Optimized Planning of In-Service Inspections of Local Flow-Accelerated Corrosion of Pipeline Elements Used in the Secondary Coolant Circuit of the WER-440-Based Units at the Novovoronezh NPP

摘要

Matters concerned with making efficient use of the information-analytical system on the flow-accelerated corrosion problem in setting up in-service examination of the metal of pipeline elements operating in the secondary coolant circuit of the WER-440-based power units at the Novovoronezh NPP are considered. The principles used to select samples of pipeline elements in planning ultrasonic thickness measurements for timely revealing metal thinning due to flow-accelerated corrosion along with reducing the total amount of measurements in the condensate-feedwater path are discussed.