Classify equipment stops consistently and understand their different operational consequences.

Understanding planned vs unplanned downtime

Define whether setup, breaks, lack of demand and restricted running belong in separate categories.

Use a stable definition, trustworthy source data and operating context before turning the measure into a target.

A practical approach

Capture start, restoration and production-impact times, then link the work and cause rather than relying on shift-end estimates.

Define responsibility, applicable criteria and escalation before collecting more data.

• Clear downtime categories
• Accurate event timestamps
• Work and cause links
• Production-impact context

Evidence and continual control

Use the comparison to improve shutdown planning and reduce avoidable failure, not to eliminate necessary planned intervention.

Review exceptions and outcomes regularly so the process improves rather than becoming static administration.