RCM Decision Diagram
Follow the SAE JA1011 / Moubray methodology to determine the right maintenance strategy for any failure mode.
Is the failure evident to operators under normal circumstances?
Understanding this question
An evident failure is one that, on its own, will become apparent to the operating crew under normal circumstances. Hidden failures are not evident and typically affect protective devices or standby equipment.
About This Tool
This interactive decision diagram follows the RCM task selection logic as defined in SAE JA1011 and John Moubray's Reliability-centred Maintenance. It guides you through determining the appropriate maintenance strategy for any failure mode based on its consequences and the applicability of different task types.
Maintenance Strategies
- • Condition-Based: Monitor & act on P-F curve
- • Scheduled Restoration: Periodic overhaul
- • Scheduled Discard: Fixed-interval replacement
- • Failure-Finding: Test hidden functions
- • Run-to-Failure: Reactive maintenance
- • Redesign: Modify the asset
Consequence Categories
- • Safety: Could hurt or kill someone
- • Environmental: Regulatory breach
- • Operational: Affects production/output
- • Non-operational: Repair costs only
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This tool helps with task selection, but full RCM analysis requires FMEA worksheets, function descriptions, and documentation templates. Get production-ready templates that integrate this decision logic.
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