12. STRIKE WHEN THE IRON IS HOT – جب لوہا گرم ہو
MATCHING MAINTENANCE WITH MACHINE!
Striking iron at the right time when it is hot is being effective. Striking it with right force and at the right place is efficiency. According to Peter Drucker, effectiveness is more important than efficiency.
Let us now see which is the most effective maintenance strategy and when? Here are few examples:
a. Reactive or Run to fail strategy is followed for electronic cards, control modules; heavy duty mechanical parts e.g. crank shaft, cam shaft, etc.
b. Interval based Preventive maintenance strategy:
- Time based: For standby generators
- Utility based: For prime generators
c. Conditioned based strategy is generally followed for fuel system calibrations; engine overhauls, etc.
d. Proactive or Predictive maintenance strategy involves profiling and diagnostics to predict impending failures. It is followed for very large, heavy duty machines and its parts, etc.
e. Reliability centered maintenance is the most effective form of maintenance. It is a mix of all of the above in varying proportions depending upon equipment and its operations cost, crucial nature and complexity, business objectives, etc.