Which maintenance strategy involves action based on the condition of operating parameters?

The maintenance strategy that focuses on acting based on the condition of operating parameters is on-condition maintenance. This approach requires monitoring the actual condition of equipment during operation to determine when maintenance should be performed. By continuously assessing various indicators, such as vibration levels, temperature, or fluid analysis, maintenance activities are only carried out when specific thresholds signal that components may need attention. This can prevent unnecessary maintenance and reduce downtime, as actions are taken only when needed based on real-time data rather than on a set schedule.

In contrast, preventive maintenance is planned and performed at regular intervals regardless of the current condition, while predictive maintenance relies more on data analysis and historical trends to predict when maintenance should be done, rather than responding directly to real-time conditions. Corrective maintenance, on the other hand, is reactive and is performed only after a failure has occurred. Therefore, on-condition maintenance stands out as the strategy most closely aligned with acting specifically on the observed condition of machinery or equipment.