5 steps to reduce unplanned downtime

Unplanned downtime is the most expensive kind of maintenance — here are five moves that consistently cut it.

You can't fix what you don't count. Start logging every unplanned stoppage with duration, cause and the asset involved — even a simple register beats memory. Within a month, your worst offenders stop being opinions and start being a list.

1. Measure it properly first

Sort your downtime log by asset and cause. The top two or three repeat failures usually account for a disproportionate share of lost hours. Root-cause those first — the rest of the list can wait.

2. Fix repeat failures, not just failures

Half of long stoppages are really waiting-for-parts events. A criticality-ranked spare-parts list turns an eight-hour breakdown into a one-hour swap.

3. Get critical spares on the shelf

For the machines that hurt you most, periodic checks aren't enough — a failure that develops between inspections still lands as unplanned downtime. Continuous vibration or temperature monitoring catches the fault while there's still time to plan the repair.

4. Move the top assets onto condition monitoring

Every failure should end in a work order that records what happened, what fixed it and what prevents a repeat. That's the dataset that turns step 1 into a permanent improvement cycle instead of a one-off project.

5. Close the loop