Basic Features
The RCM process described in the DOD/UAL report recognized three principal risks from equipment failures: threats
- to safety,
- to operations, and
- to the maintenance budget.
Modern RCM gives threats to the environment a separate classification, though most forms manage them in the same way as threats to safety.
RCM offers five principal options among the risk management strategies:
- Predictive maintenance tasks,
- Preventive Restoration or Preventive Replacement maintenance tasks,
- Detective maintenance tasks,
- Run-to-Failure, and
- One-time changes to the "system" (changes to hardware design, to operations, or to other things).
RCM also offers specific criteria to use when selecting a risk management strategy for a system that presents a specific risk when it fails. Some are technical in nature (can the proposed task detect the condition it needs to detect? does the equipment actually wear out, with use?). Others are goal-oriented (is it reasonably likely that the proposed task-and-task-frequency will reduce the risk to a tolerable level?). The criteria are often presented in the form of a decision-logic diagram, though this is not intrinsic to the nature of the process.
Identification of Safety Critical Elements (SCE) and maintaining associated pre defined performance standards is the foundation of asset integrity management.
Read more about this topic: Reliability Centered Maintenance
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