4. Conclusion

Industrial equipment is increasingly subject to stressful production flows, i.e. constantly evolving technological and/or product work-in-progress and/or rapid obsolescence. This leads to frequent changes in manufacturing ranges and/or production equipment operating conditions, sometimes at the limits of their technical capabilities. In this type of environment, the maintenance function, like other operational sectors, must have at its disposal a dynamic control system enabling it to quantify and dynamically control the impact of the environment on the variability and risks inherent in the reliability of equipment or infrastructures. Indeed, variability can be qualified as "good" when it is the necessary implication of an operational strategy, such as operating in a highly competitive production and/or R&D environment, constrained by market trends. But this "good" variability can have...