What are the two main types of maintenance?

What are the two main types of maintenance?

• A. Rework and Upkeep
• B. Scheduled and Unscheduled
• C. On-equipment and Off-equipment
• D. Preventive and Corrective

Answer: (A)

Maintenance is about two purposes: keeping things from failing and fixing them when they do fail. The two main kinds are preventive maintenance and corrective maintenance. Preventive maintenance consists of planned, scheduled tasks like inspections, lubrication, adjustments, and parts replacements done before a failure is expected, aimed at reducing the chance of problems and extending the equipment’s life. Corrective maintenance is what you do after a failure is detected—the goal is to restore operation quickly, diagnose the fault, repair or replace faulty components, and often learn from the incident to prevent recurrence. Other categorization schemes exist (such as by where work is done or whether it’s scheduled), but the essential division is between preventing failures and repairing after they happen.

Maintenance is about two purposes: keeping things from failing and fixing them when they do fail. The two main kinds are preventive maintenance and corrective maintenance. Preventive maintenance consists of planned, scheduled tasks like inspections, lubrication, adjustments, and parts replacements done before a failure is expected, aimed at reducing the chance of problems and extending the equipment’s life. Corrective maintenance is what you do after a failure is detected—the goal is to restore operation quickly, diagnose the fault, repair or replace faulty components, and often learn from the incident to prevent recurrence. Other categorization schemes exist (such as by where work is done or whether it’s scheduled), but the essential division is between preventing failures and repairing after they happen.