This indicator looks at the level of preventive maintenance coverage of the CMMS/EAM system. By examining the total number of pieces of equipment, and comparing it with the average number of preventive maintenance tasks for pieces of equipment, a theoretical value can be obtained. By comparing the current number of preventive maintenance activities with this number, an approximate level of coverage can be obtained. Part of the equipment may have the following interval of work:

Daily
Weekly
Monthly
Quarterly
semi-annual
Annual
Another.

Few, if any, items of equipment will have all of these spacings. But what if each of them averaged three periodic ranges? Then the number of pieces of equipment must be multiplied by three to get the theoretical number of preventive tasks for the plant or facility. In fact, most companies do not adhere to this level of detail in their preventive maintenance programs.

This figure is obtained by dividing the total number of preventive maintenance activities defined in the CMMS/EAM by the total number of pieces of equipment loaded in the CMMS/EAM, multiplied by three. The goal is to reach 100%. This indicator provides an analytical estimate, but more than 15 years of use is needed to provide an accurate test of preventive maintenance coverage in CMMS/EAM.

Advantages

This metric is essential for any company seeking to ensure that the prevention program fully covers all equipment introduced into the CMMS/EAM.

Flaws

The weakness of this indicator is that it is only an average guideline. Despite this, time has proven the accuracy of the assumption that on average there are 3 preventive maintenance activities per piece of equipment, for some companies this number may be less than three. For others, it may average more than three. This indicator should not be used as a measure of performance, but only as a guide to reflection.

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