Condition-based maintenance is the maintenance policy that triggers service actions when measured equipment condition exceeds predefined thresholds - it replaces purely time-driven servicing with real equipment-state signals.

What Is Condition-based maintenance?

• Definition: Rule-based maintenance activation from live sensor readings and diagnostic indicators.
• Trigger Logic: Examples include vibration limits, pressure drift, temperature rise, or particle count alarms.
• Difference from Predictive: CBM uses threshold rules, while predictive methods estimate future failure probability.
• Deployment Need: Requires reliable instrumentation and clear response procedures.

Why Condition-based maintenance Matters

• Targeted Intervention: Service occurs when evidence of degradation appears, reducing unnecessary work.
• Failure Risk Control: Early threshold breaches provide warning before severe breakdown.
• Operational Simplicity: Rule-based logic is easier to deploy and audit than advanced forecasting models.
• Cost Balance: Often delivers better economics than strict calendar maintenance.
• Process Protection: Rapid response to condition shifts helps prevent quality excursions.

How It Is Used in Practice

• Threshold Design: Set alarm and action limits from engineering specs plus historical behavior.
• Monitoring Infrastructure: Integrate sensor data with dashboards and automated work-order triggers.
• Threshold Review: Periodically recalibrate limits to reduce false alarms and missed detections.

Condition-based maintenance is a practical bridge between preventive and predictive approaches - condition triggers improve maintenance timing with manageable implementation complexity.