Level Of Repair Analysis
Life Cycle Cost
Logistics Support Analysis
Maintenance Task Analysis
Spares Modeling
FMECA
Reliability Centered Maintenance Analysis
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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
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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
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modes can be conducted. 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
electro-mechanical 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.
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Why do
RCM?
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Again if 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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