Chronic Failure
A chronic failure is a recurring equipment problem that persists over time and is often accepted as normal despite its cumulative impact.
What this term means in maintenance
A chronic failure is a recurring equipment problem that persists over time and is often accepted as normal despite its cumulative impact.
What makes a failure chronic
Chronic problems may be individually small but occur frequently.
Examples include:
- Repeated sensor trips
- Frequent small leaks
- Conveyor belt tracking issues
- Recurring instrument drift
- Repeated coupling wear
- Daily minor stoppages
Practical example
A filler stops several times per shift because a sensor becomes contaminated. Each stop lasts only two minutes, but the accumulated production loss is significant.
Why chronic failures remain
They may persist because:
- Each event is low priority
- The asset restarts quickly
- Failure codes are inconsistent
- No one reviews accumulated loss
- Temporary actions become normal
- Ownership is unclear
How to address them
Use Pareto analysis, repeat-failure review, root cause analysis, and focused improvement.
Common mistake
Prioritizing only major breakdowns can allow chronic losses to create a greater total impact over time.
How this term differs
Chronic Failure is a persistent recurring failure pattern over time. It is related to Repeat Failure, First-Time Fix Rate, and Maintenance Rework, 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.
Repeat Failure
A repeat failure is the recurrence of the same or closely related failure on an asset within a defined review period.
Pareto Analysis
Pareto analysis ranks problems by their contribution to total loss so teams can focus on the few causes creating the greatest impact.
Six Big Losses
The Six Big Losses are common categories of production loss affecting equipment availability, performance, and quality.
Glossary FAQs
- What is a chronic failure?
A recurring problem that persists over time and is often accepted as normal.
- Why are chronic failures missed?
Individual events may be short, low priority, or recorded inconsistently.
- How are chronic failures reduced?
Use Pareto analysis, focused improvement, and root cause analysis.