2. Preventive maintenance

As defined in the above-mentioned standard, preventive maintenance is "maintenance designed to assess and/or mitigate degradation and reduce the probability of failure of an asset". Based on this general definition, two variants can be distinguished:

• systematic preventive maintenance ;

• conditional preventive maintenance ;

• predictive maintenance (a more advanced form of condition-based maintenance).

But before taking a closer look at predictive maintenance and the methods and tools used to implement it, let's take a closer look at the challenges of preventive maintenance in general. Indeed, all the surveys carried out to date show that, contrary to all expectations, preventive maintenance is struggling to gain a foothold in certain professional sectors....