6. Selection of preventive maintenance methods and strategies

6.1 Criteria for choosing methods and intervals between tasks

The previous sections have outlined the principles and the various technologies that can be used in maintenance, without specifying the selection criteria or the frequency of the associated tasks. The aim of this section is to provide elements for establishing the content of a preventive maintenance program for complex industrial equipment. The use of feedback is particularly useful in determining the probability laws of equipment failure rates. Figure 23 shows the most common behaviors of equipment failure rates. To demonstrate this usefulness, curve E corresponds to the case of electronic equipment with a constant failure rate....