Glossary
What is Equipment Downtime?
Equipment downtime is the time when a piece of equipment is not available for use—whether due to failure, maintenance or other cause. It is often recorded in work orders and used in availability and MTBF/MTTR calculations.
What it means
Reducing equipment downtime is a key goal of maintenance. Recording downtime by cause in work orders helps target improvements.
Why it matters
- Downtime can be planned (PM, repair window) or unplanned (failure).
- Recording downtime per work order supports KPIs and analysis.
- Equipment downtime affects production and revenue in many industries.
- See downtime for full definition.
Example in maintenance operations
Machine A was down 8 hours for bearing replacement (recorded on work order). Total equipment downtime this month: 40 hours across 5 machines.
Related concepts
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