Reliability Centered Maintenance Analysis
Reliability Centered Maintenance Analysis
Reliability Centred Maintenance Analysis

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Level Of Repair Analysis
Life Cycle Cost
Logistics Support Analysis
Maintenance Task Analysis
Spares Modeling
Reliability Centered Maintenance Analysis

The RCM analysis is a systematic approach for identifying preventative maintenance tasks or scheduled maintenance tasks for an equipment end item and establishing necessary preventative (or scheduled) maintenance task intervals. One of the key objectives of the RCM analysis is to develop a maintenance schedule that would ensure that reliability of a system (or end) is enhanced. In essence a maintenance task would be implemented prior to the failure occurrence of the component in question.

The consolidated results from the RCM analysis process forms the basis of a Preventive Maintenance (PM) program for the system. A RCM analysis is conducted to determine which PM tasks would provide increased equipment reliability for the life cycle. MIL-STD-2173 as well as MSG-3 detail instructions, providing a guide for RCM analysis. The RCM analysis would use the information generated by the FMEA to identify which hardware components have the greatest effect on the equipment reliability and availability, by identifying probable failure modes.

Using the decision tree process of RCM analysis, a complete analysis of each Functional Significant Item and their assigned failure modes can be conducted.

Reliability Centered Maintenance Analysis

The results of the analysis provide a clear decision as to which preventive maintenance tasks should be developed to support the system. Example RCM logic diagrams can be found in MIL-STD-2173, which provides default answers that can be used to complete the analysis. The results of the RCM logic should be documented and retained in an official report. (This can be accommodated in the LSAR, as per MIL-STD-1388/2B)

As electronics failure patterns (rates) generally exhibit a constant failure rate, the RCM analysis will have its most impact on electromechanical and mechanical based maintenance activities. The RCM analysis when used in conjunction with the FMECA can be used to identify potential hidden safety related failures for electronic systems. When the RCM analysis in conjunction with the FMEA are implemented early in the design process, safety related failure modes could be more easily removed from the system during the design phase. As the maturity of the design progresses this option becomes increasingly more difficult and expensive to address.

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Last Updated: July 2009