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Glossary · Maintenance

Predictive maintenance: what it takes to do it well

Also known as: PdM

Predictive maintenance decides when to intervene based on the real condition of the equipment, measured through vibration, temperature, power draw or oil analysis, not by calendar.

How it differs from preventive maintenance

Preventive maintenance replaces the bearing every 6,000 hours because the manufacturer says so. Predictive maintenance replaces it when vibration shows it is wearing out: not before, wasting useful life, and not after, with the equipment broken.

What it takes, in this order

  1. A reliable history. Without knowing when each piece of equipment failed and why, there is no pattern to find.
  2. Something you can measure that is related to the failure.
  3. A data collection routine, even if it is manual with a handheld device.
  4. And then sensors and automation.

The usual mistake

Starting with step 4. Buying sensors before you have a history produces a lot of data and no decisions. Predictive maintenance is built on top of preventive maintenance that already works, not instead of it.

Modules and industries

Where it is used in attendo

Modules

Industries that use these modules

Keep reading

Related terms

Maintenance

Preventive maintenance

PM

Preventive maintenance is work planned by calendar or by usage to keep failures from happening: routine inspections, lubrication, scheduled replacements and regulatory checks.

Maintenance

MTBF

Mean time between failures

MTBF (mean time between failures) is the average time a piece of equipment runs properly between one breakdown and the next. It measures reliability.

Maintenance

Asset criticality

Equipment criticality

Asset criticality is the impact that an asset’s failure has on service, production or safety. It helps you share out a maintenance budget that is always limited.

See all 53 glossary terms

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