By Jim Fitch
Diesel Progress Engines and Drives Magazine
The field of maintenance technology is going through a revolution of change. Gone are the days when a machine had a predictable service life, after which it was replaced, continuing the cycle. Today, machinery and equipment can be maintained to achieve useful operating Iives many times more attainable than just a few years ago.
The 1980s bore the popular practice of predictive maintenance and condition monitoring to combat rising maintenance costs. In the 1990s, we implement predictive maintenance with greater confidence and precision. These early warnings have proven effective at reducing the magnitude of failure and amount of unscheduled downtime; however, no real progress has been made in reducing frequency. Any maintenance strategy targeting the reduction of failure frequency must address the fundamental causes of failure. Such a strategy of eliminating causes would be “proactive” to failure, not “reactive” to failure.