Many organizations feel that if they can move from reactive to preventive maintenance they are headed on the right path, and that this in turn means they are on the road to proactive maintenance. However, as has been demonstrated by many studies, in excess of 80 percent of all failures are random. Therefore, time-based preventive maintenance (PM) programs will not be effective because you will, in most cases, be doing too much work too soon or too little work too late.
Over the past few decades, the demands placed on maintenance have been changing. In leading companies today maintenance is no longer viewed as a cost center, but rather is expected to contribute to the strategic goals of the company. In today