Programme of long-term operation of Paks nuclear power plant

For the prolongation of the operational license of WWER-440/213 units at Paks NPP, Hungary a regulatory framework and a comprehensive engineering practice have been developed via consequent application of best practices, feedback of experiences and proper consideration of design features. Key elements of justification for safety of long-term operation of Paks NPP are the assessment of plant condition and review of adequacy of ageing management programmes, also the review, validation and reconstitution of time limited ageing analyses, and control of effectiveness of the maintenance. Development of the programme for long-term operation has been based on the results and conclusions of reviews of ageing management programmes and time limited ageing analyses as well as on the assessment of effectiveness of the maintenance, programme for maintaining the environmental qualification, plans for condition dependent replacements and reconstructions, programme for ensuring the ability of operational organisation. (authors)