Key Performance Indicator
A Key Performance Indicator (KPI) in industrial maintenance is a quantifiable metric used to evaluate the efficiency, effectiveness, and reliability of maintenance operations against defined strategic goals, such as minimizing downtime, reducing costs, or ensuring compliance.
In a CMMS like ServiceGrid, KPIs are automatically calculated from work order data, asset logs, and inventory records to measure asset uptime, schedule compliance, and repair speed, enabling data-driven decisions for resource allocation and continuous improvement. Examples include MTBF (Mean Time Between Failures) tracking average operational time before failure to gauge inherent reliability, MTTR (Mean Time To Repair) measuring average time to restore equipment, and PMC (Preventive Maintenance Compliance) calculating the proportion of preventive tasks completed on time.
How is Asset Availability calculated and distinguished from Reliability?
Availability = (MTBF / (MTTR + MTBF)) × 100, measuring actual uptime; Reliability is the probability of performing a function without failure, used for predicting future availability.
What is the formula for OEE (Overall Equipment Effectiveness)?
OEE = Availability × Performance × Quality; it quantifies production losses and is the gold standard for assessing equipment performance.
When should MTTF (Mean Time To Failure) be used instead of MTBF?
MTTF tracks the lifetime of non-repairable assets before replacement, whereas MTBF applies to repairable assets and measures time between failures.
What is the benchmark for PMC?
PMC should ideally be >90% to ensure compliance with maintenance schedules and prevent unexpected breakdowns.
How does Backlog Age impact reliability?
A high Work Order Backlog Age indicates scheduled work delays, increasing the risk of failure and reducing operational readiness.