Which of the following is NOT a listed technique for Preventive Maintenance?

• A. Periodic Reviews
• B. Routine Lubrication
• C. Calibration
• D. Root Cause Analysis

Answer: (D)

Preventive maintenance revolves around proactive, scheduled actions that keep equipment functioning and prevent faults. Periodic reviews, routine lubrication, and calibration are classic examples of these proactive tasks: reviews keep you informed about equipment health on a set timetable, lubrication reduces wear and friction, and calibration maintains measurement accuracy within specified limits.

Root Cause Analysis is a method used after a failure has occurred to uncover the underlying reasons and prevent recurrence. It’s a diagnostic and improvement tool typically used within corrective maintenance or reliability programs, not a standard preventive maintenance activity. So while RCA can help improve PM programs, it isn’t itself a listed preventive maintenance technique.