5. Some specific stock determination techniques

5.1 List based on reliability data

Experimental acquisition of data representative of equipment behavior in operation (number of failures observed, nature of these failures, uptime, etc.) often enables a reliability analysis to be carried out, using the most conventional reliability laws (exponential law, Weibull's law, Poisson's law, etc.). This experimental reliability analysis enables us to estimate the probability of needing a given part during a given period, all other things being equal. A well-informed historical record remains the essential basis for this analysis.

In the case of spare parts, Poisson's law is best suited to this type of part recommendation. It can be used to calculate the cumulative probability of having between 0 and N breakdowns,...