Glossary

What is preventive maintenance?

Quick answer

Preventive maintenance is work performed on a fixed schedule, by time or usage, to reduce the chance of failure: inspections, servicing, and component replacement before things break. Done well and on the right assets, it lowers unplanned downtime and total cost.

Benchmark

Benchmark
GoodA right-sized program on critical assets with high PM compliance.
Warning signEither too little PM, so assets fail, or blanket PM on everything, which wastes labour.

Why it matters

Preventive maintenance is the main tool for shifting work from reactive to planned, but only if it targets the right assets and is actually completed on time. Over-maintaining trivial assets wastes the very labour that should protect the critical ones.

How to improve it

Right-size the program using criticality, protect PM time so compliance stays high, and review whether each task is actually preventing failures or just consuming hours.

Frequently asked questions

What is the difference between preventive and predictive maintenance?
Preventive maintenance is done on a fixed time or usage schedule. Predictive maintenance uses condition monitoring to act only when data shows a developing problem, which can avoid unnecessary work.

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