Criticality Matrix
A criticality matrix is a structured grid used to classify assets or failure modes according to failure likelihood and consequence.
What this term means in maintenance
A criticality matrix is a structured grid used to classify assets or failure modes according to failure likelihood and consequence.
How a criticality matrix works
One axis represents likelihood or frequency. The other represents consequence or severity.
The combination may classify risk as:
- Low
- Medium
- High
- Critical
Consequence categories
The assessment may consider:
- Safety
- Environment
- Quality
- Production
- Compliance
- Repair duration
- Financial impact
Practical example
A high-consequence failure with low likelihood may still receive a high criticality because the outcome is unacceptable.
How the matrix is used
Results may influence:
- Asset criticality
- PM strategy
- Spare-parts policy
- Backlog priority
- Deferral approval
- Root cause analysis
- Inspection depth
Common mistake
A matrix with vague scoring descriptions allows different teams to assign different ratings to the same condition.
How this term differs
Criticality Matrix is the scoring or classification method used to assess criticality. It is related to Asset Criticality, Critical Asset, and Work Order Priority, but these terms describe different records, measures, roles, strategies, or decisions and should not be used interchangeably.
Related concepts
Related maintenance terms
Keep exploring connected CMMS, reliability, and maintenance planning terms.
Asset Criticality
Asset criticality is a structured assessment of how strongly an asset failure could affect safety, environment, quality, production, compliance, cost, and recovery.
Risk-Based Maintenance
Risk-based maintenance prioritizes maintenance decisions according to the likelihood and consequence of equipment failure.
Critical Asset
A critical asset is equipment whose failure could create an unacceptable impact on safety, environment, product quality, compliance, production, or business continuity.
Glossary FAQs
- What is a criticality matrix?
A grid combining failure likelihood and consequence to classify risk.
- What is assessed in consequence?
Safety, environment, quality, production, compliance, recovery, and financial impact.
- Why must scoring criteria be clear?
Vague criteria create inconsistent ratings across teams.