Definition of Objectives
What is not measure, cannot be improved. In most of the cases, RCM is a methodology implanted seeking improvement in the results. That is why it is very important to measure: in order to know if the main objective is been achieved, which is improving.
With RCM certain aspects get improved, reflected in very concrete indicators. The reliability is, with no doubt, the most affected parameter with the implementation of RCM: it is not strange that the R of the name is Reliability, as it is reliable. Thus, the equipment and installation get stopped when the user wishes, slashing the number of stoppages per failure in any part of the system. It has to be bear in mind that that was precisely the main motive of the developing of RCM in the aircraft industry, avoid failures in a planes, with disastrous consequences.
The second parameter affected in a positive way for the correct implementation of the RCM methodology is availability. It is convenient to remember the difference between reliability, which only considers stoppage for non-programmed corrective maintenance, and availability for whose reckon it is consider every maintenance stoppage, whether programmed or not. RCM decreases the necessity of maintenance, as this is only implied where it is necessary to be implied, where the problem is fixed effectively, avoiding making routine tasks without enough technic cause.
RCM decreases the number of hours and the resources used in maintenance, and also, the number of stoppage hours of installations for carrying out the planned and unplanned tasks when, on the one hand, eliminating the maintenance works which doesn’t have an accurate reason and, on the other hand, eliminate or reduce the number of interventions due to failures.
In that sense, some indicators related to the management of work orders are also positively affected. Hence, the rate of emergencies and the number of recurrent failures decrease and tend toward zero.
As a consequence, the expenses of maintenance decrease. Although the initial objective of RCM was not the decreasing of maintenance expenses but the increase of reliability of equipment and installations (hence its name), truth is that in those plants where systematic maintenance is strongly implanted and especially in those where the maintenance is based on manufacturers’ instructions, the reduction in expenses is very clear.