Step 02 · ACR
Asset Criticality Rating.
A 6-step facilitated ranking that produces defensible A-D classes across Safety, Environment, Reputation and Financial consequence — and maps each class to a maintenance strategy.
The 6 steps
- ·Confirm hierarchy scope and boundaries
- ·Calibrate consequence scales with the operator
- ·Score likelihood on a 5-point scale (evidence-based)
- ·Score consequence across 4 dimensions
- ·Plot 5x4 matrix — classes A, B, C, D
- ·Map class to strategy, standby posture, spares, RCA candidacy
Class to strategy mapping
| Class | Meaning | Default strategy | Standby | Spares |
|---|---|---|---|---|
| A | Loss of critical service | On-condition + predictive | Hot | Critical, held on-site |
| B | Major degradation | Scheduled restoration/discard | Hot or cold | Held on-site |
| C | Minor degradation | Failure-finding + planned | Cold | Framework agreement |
| D | No material impact | Run-to-failure | None | Ad-hoc |
Outputs written back to CMMS
- ·Criticality class per asset
- ·Critical spares list and stocking policy
- ·RCA candidate flag for high-severity failures
- ·Standby posture (hot vs cold) recorded against the asset
A reliability assessment scoped to one hall.
Fixed scope, fixed fee. You leave with a baseline asset model, a FMEA-ranked risk register, and an evidence starter pack.