Routing checks and testing as per a company's quality management system are part of which maintenance category?

• A. Predictive Maintenance
• B. Breakdown Maintenance (Corrective actions)
• C. Reactive Maintenance
• D. Preventive Maintenance (condition monitoring)

Answer: (D)

Routine routing checks and testing that follow a quality management system are planned, regular actions aimed at keeping equipment and processes in spec and preventing faults. This is preventive maintenance, because the goal is to avert failures before they happen by performing scheduled care and inspections. It isn’t triggered by a known fault (that would be breakdown or reactive maintenance), and while condition monitoring is a technique used in predictive maintenance, when these checks are defined as standard QM activities, they fit preventive maintenance as ongoing, planned prevention rather than condition-based failure forecasting.