Preventive Maintenance

How can you monitor the effectiveness of the PM program? How can you know when the program needs adjustment to insure effectiveness? Observations can be made in several areas:
Low overall equipment effectiveness (using the formula)
Longer MTTR (mean time to repair)
Maintenance-related quality problems
Cost per repair increases
Rapid decrease in the value of capital assets
Low equipment effectiveness should be examined formula by formula. This could be particularly PM related when the availability is the lowering factor. If quality is the problem, then the quality part of the formula will highlight this point.
A longer MTTR (mean time to repair) indicates that a failure or breakdown takes a longer time to repair, meaning a more severe problem has been encountered. It takes longer to repair than a less serious problem that should have been found in its early stages by an effective PM program.
Comparing quality problems to the equipment effectiveness formula can help to spot those quality problems that are maintenance related. If the problems are related due to routine services or PMs, then the program's effectiveness is questionable. This indicator will allow corrective action to be taken.
The cost per repair is an indicator that shows repairs are more involved and taking more parts and labor than they should because of problems caused by a failure or an advanced stage of deterioration.
The rapid deterioration of assets simply means that the equipment and facilities are not lasting as long as their design intends. Lack of...