How is Preventive Maintenance (PM) best defined?

• A. Maintenance done only after equipment fails
• B. Routine actions to prevent equipment failures
• C. Inspection activities performed annually
• D. Random checks performed on equipment

Answer: (B)

Preventive Maintenance (PM) is best defined as routine actions taken to prevent equipment failures. This proactive approach involves regularly scheduled tasks such as inspections, cleaning, lubricant replacement, and part replacements, aimed at keeping equipment in optimal working condition and extending its lifespan. By performing these routine actions, potential problems can be identified and resolved before they lead to significant failures, thereby enhancing reliability and reducing downtime.

The emphasis on routine actions underscores the systematic nature of preventative maintenance, as it is not a reaction to failures but rather a strategy to proactively ensure that equipment operates effectively and efficiently.