3 Maintenance Strategies: Which Works Best?

Summary

The video compares three common asset maintenance strategies: reactive, preventive, and predictive maintenance. Reactive maintenance waits for asset failure before acting, while preventive maintenance follows fixed schedules. Predictive maintenance, on the other hand, adjusts based on the asset's condition over time. The video explores how these strategies differ in terms of costs, efficiency, and asset longevity. Reactive maintenance is cheaper short-term but costly in the long run, while predictive maintenance, although costly upfront, offers better long-term asset management. The appropriate strategy depends on factors like asset criticality, regulatory needs, and available diagnostic technology.

Takeaways

• 😀 Reactive maintenance involves doing nothing until the asset fails, then responding to the failure.
• 😀 Preventive maintenance follows a fixed schedule and performs regular tasks to avoid failures.
• 😀 Predictive maintenance monitors the asset's condition over time and anticipates failure based on leading indicators.
• 😀 Reactive maintenance may result in lost potential life of an asset because failure can occur early.
• 😀 Preventive and predictive maintenance strategies help organizations achieve the full service life of assets.
• 😀 Reactive maintenance focuses on solving immediate problems without anticipating future failures.
• 😀 Preventive maintenance plans maintenance intervals based on fixed schedules rather than asset condition.
• 😀 Predictive maintenance adjusts maintenance intervals based on the asset's current condition and age.
• 😀 The monetary impact of maintenance approaches varies: reactive is cheaper short-term, while preventive and predictive can save costs in the long run.
• 😀 Preventive maintenance incurs fixed costs, but may not reflect the asset's changing condition, while predictive maintenance is more aligned with asset health but has higher upfront costs.
• 😀 The maintenance strategy chosen depends on factors such as asset criticality, regulatory needs, and available diagnostic technology.

Q & A

What are the three maintenance strategies commonly used to manage assets?

The three maintenance strategies commonly used are reactive (corrective) maintenance, preventive maintenance, and predictive maintenance.

How does reactive maintenance differ from preventive and predictive maintenance?

Reactive maintenance is performed only after an asset fails, whereas preventive maintenance involves regular maintenance at fixed intervals, and predictive maintenance adjusts maintenance tasks based on the asset's changing condition over time.

What is the potential issue with reactive maintenance?

With reactive maintenance, organizations often cannot achieve the full service life of the asset, as failure occurs unexpectedly, potentially wasting some of the asset’s potential lifespan.

How does preventive maintenance aim to manage asset failures?

Preventive maintenance involves performing regular maintenance tasks at fixed intervals, aiming to prevent failures before they happen, but it doesn’t adjust based on the asset’s actual condition.

What is unique about predictive maintenance compared to preventive maintenance?

Predictive maintenance is proactive and adjusts maintenance tasks based on the asset’s current condition and age, whereas preventive maintenance follows fixed intervals regardless of the asset's condition.

Why might an organization choose predictive maintenance over the other strategies?

Predictive maintenance allows the organization to anticipate failures based on the asset’s condition, helping to prevent unplanned downtimes and extend asset life, although it requires higher upfront costs for equipment and training.

What is the financial impact of reactive maintenance compared to preventive and predictive maintenance?

Reactive maintenance is cheaper in the short term but more expensive in the long term due to the higher costs from a shorter asset life. Preventive and predictive maintenance have higher initial costs but can save money over time by extending asset life and reducing failures.

How does preventive maintenance deal with costs and maintenance intervals?

Preventive maintenance incurs fixed costs at fixed intervals, which may not reflect the actual condition of the asset, potentially leading to unnecessary maintenance or missed opportunities for more targeted actions.

What role does diagnostic technology play in maintenance strategies?

Diagnostic technologies are crucial in predictive maintenance, allowing organizations to detect early signs of failure based on the asset’s changing condition. They are also important for ensuring more targeted preventive maintenance.

How do maintenance strategies relate to the asset’s deterioration curve?

Maintenance strategies are aligned with the asset's deterioration curve, where reactive maintenance is applied only after failure, preventive maintenance follows fixed intervals regardless of condition, and predictive maintenance adjusts based on the asset’s current state to minimize risk.