Which of the following is NOT a direct benefit of a preventive maintenance program?

• A. Reduces unscheduled downtime.
• B. Prolongs equipment life.
• C. Maintains safe operation.
• D. Increases production speed beyond capability.

Answer: (D)

Preventive maintenance is about keeping equipment reliable, safe, and available. Its direct benefits include reducing unscheduled downtime by catching issues before they cause surprises, prolonging equipment life by minimizing wear through timely servicing, and maintaining safe operation by ensuring safety-critical components function correctly and the system runs predictably.

Increasing production speed beyond the machine’s design capability isn’t a direct outcome of preventive maintenance. Maintenance helps you operate at the designed speed more reliably and with fewer interruptions, but it can’t push a machine past its inherent physical limits. Achieving higher speeds would require process optimization or equipment upgrades, not just routine maintenance.