THE OPTIMIZATION MODEL.

The optimization model optimize for a single metric, namely cost,the greater the mean time between maintenance (MTBM) for a given asset,the less the preventive maintenance is being done.Hence the lower the preventive maintenance at same time,the greater the MTBM,the greater the probability of failure,and thus the greater the maintenance repair and replaced cost (Berger,2005).
Berger(2005),illustrates that optimization on the basis of reliability or availability might show that an alternative policy is superior, which might be compared with difference condition based maintenance (CBM) policies that differ in terms of mean time between maintenance.
the condition based maintenance may differ in terms of conditions that trigger a maintenance type(minor versus major) and at which stage of deterioration.Thus a good maintenance program compares policies, from single - runt failure to online continue condition based maintenance, all in the multiple matrices,more sophisticated modeling tools allow progressive outlays of greater and greater functionality, which continuously improves the optimal solutions.The user should be able to:
      - Experiment with effect on several key metrics of changing the maintenance of a given component, equipment, line facility or line of business.
      - Determine the post and benefit of outsourcing one or more maintenance tasks.
      - Understand the trade of in adding hand held or online condition monitoring devices.
      - Determine the effect of changing the maintenance technician skill level.
      - See the effect of giving policy on product quality(damaged or lost items) at different degradation levels.
       -Perform sensitivity analysis to understand the effect of adjustment of various variables, so that strategic trade-offs can be understood.