KEY ELEMENTS OF THE AGEING MANAGEMENT OF THEWWER-440/213 TYPE NUCLEAR POWER PLANTS

摘要

The owner's intention of WWER-440/213 units in Central Europe is to keep the plants in operation as long astechnically feasible and reasonable from business point of view. The preconditions of the long term operation andlicense renewal are the safety and good plant condition. The past and recent ageing management practices have toensure the required condition and performance of the essential structures, systems and components. In the paper anoverall picture of the long term operation of WWER-440/213 units is given. The review covers ageing ofmechanical equipment, building structures and electrical equipment to. Key elements of the ageing managementare identified and described. Basic issues of assessment of ageing of essential structures, systems and components,also the issues related to availability of design basis information and lacking environmental qualification arediscussed. Reference examples typical for WWER-440/213 plants long term operation are given from PaksNuclear Power Plant practice.