5. Conclusions, operational lessons, R&D prospects

The study of aging requires examination of two aspects: modeling degradation and reliability. The importance of :

• the OMF methodology and its updating (if OMF is not sufficient to extend service life, it is necessary to avoid aging; OMF is aimed at short-term maintenance; the study of durability is an optimization of long-term maintenance);

• strategic feedback: without feedback, it is hardly possible to carry out an ageing study, or to extend the operating life; the absence of feedback encourages insecurity, maintenance costs and renovation expenses;

• anticipating deterioration and ageing, to prevent ageing as early as possible.

The ageing study is ultimately a risk analysis approach, the main difficulty of which is certainly the creation...