Aging Management Program: Comparisons Between EDF Methodology and U.S. GALL Report Available to Purchase

EDF has developed a special methodology to review systematically the ageing management programs of all the safety important components. After a general presentation of the methodology on the different aspects (component selection, degradation mechanism sensitivity, detailed complementary analysis), the paper will make some comparison with the US procedure developed and presented in the GALL report. The objective of the comparison is to compare and discuss the major differences between EDF and US utility approaches on the mechanical components. The major differences are connected to: • different regulation request; • different code rules; • different existing management program; • different appreciation on the potentiality of some degradation mechanism. The paper will analyse in detail some specific examples, including current maintenance program, preventive maintenance and anticipation program, damage assessment and ISI program, R&D needs...