Data and intelligence

Predictive maintenance: connect signals, inspections and decisions

A change in vibration or temperature may indicate that a piece of equipment needs investigation. To turn that signal into a useful action, predictive maintenance should connect measurements with asset context, inspections and a record of the interventions the maintenance team has completed.

Prioritize assets and failure modes

We recommend starting with a defined group of assets and asking which problems the available instrumentation can observe. In a pump, temperature and current mean different things under different operating conditions. A proposal should connect criticality, available signals and maintenance response. NIST discusses evaluating condition monitoring through its impacts, costs and risks, including the consequences of imperfect monitoring within an industrial system.

Build an operating baseline

A trend becomes more informative when it can be compared with known periods. We suggest recording load, operating state, timestamp and inspection results alongside collected signals. After a component replacement, the baseline may need revision. In an industrial ventilation example, comparing equipment under different operating regimes without this context can produce unhelpful alerts. The project should define how every investigated hypothesis will be confirmed and recorded.

Close the alert loop

A notification should reach someone with a clear task: check a sensor, inspect the asset or schedule an intervention according to the approved procedure. Record the outcome, including when no failure is confirmed. The pilot should assess excessive alerts and missed events. Predictive maintenance does not mean predicting every failure; the proposal should explain observable conditions, diagnostic limits and the inspections that remain necessary.

What to assess for your project

  • Select assets and observable problems.
  • Relate signals to operating conditions.
  • Record inspections and interventions in asset history.
  • Assess alerts and assign responsibilities.

COM3

How COM3 can help

COM3 can help assess existing instrumentation, integrate sensors and organize history for predictive maintenance. The project can include trends, dashboards and alert workflows connected to maintenance records, using gradual implementation and evaluation of diagnostic hypotheses by the people responsible for the assets and their continued operation.

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Further reading and references

Technical sources consulted for the fundamentals of this content. Project recommendations are an editorial synthesis by COM3.

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