8. From safety to dependability –Resilience – Robustness

Safety means designing, building, operating and maintaining industrial facilities properly. Ultimately, we want to be able to place "justified confidence" in the production system; this is the objective of dependability (SdF) [S 8 250] defined as the union of :

• F-reliability: rarity of failures. It is the ability of an entity to accomplish what it was designed to do over time (NF X 60-500);

• maintainability M: brevity of breakdowns. It denotes the ease with which a product can be put back into good working order, in other...