Predictive strategy in industrial maintenance
This article analyzes the different maintenance strategies [...]
This article discusses the different maintenance strategies applicable to industrial assets.
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The main interest of these notes is to help industrial maintenance managers and coordinators to implement the right strategy for each asset in order to achieve an optimal design of their maintenance plan.
The application of the predictive strategy in industrial maintenance has brought enormous savings to those companies that have been able to apply the most appropriate strategies for each asset. But most industrial facilities schedule maintenance interventions only after a number of operating hours or when an unexpected failure occurs.
The maintenance management strategies we are going to analyze are:
- Backward Maintenance
- Reactive Maintenance
- Preventive Maintenance
- Predictive Maintenance
- Proactive Maintenance
Predictive or preventive maintenance?
Scheduled maintenance according to schedule or preventive maintenance (PM)
Preventive maintenance is that which schedules the replacement of machine elements on a periodic basis before reaching the end of their useful life. The periodicity of maintenance interventions is based on theoretical calculations or estimates of the duration of the components that fail according to patterns based on operating time.
Predictive maintenance (PdM) or condition-based maintenance (CBM)
Predictive or condition-based maintenance evaluates the condition of machinery and recommends whether or not to intervene, resulting in large maintenance savings.
[...] The maintenance manager is the one who has to make the necessary changes to achieve a balance between reactive, preventive and predictive maintenance interventions. Although the percentages between them differ from one type of industrial plant to another, a general objective would be to have in critical machinery no more than 10% of interventions by reactive, approximately 35% by preventive and the rest (55%) by predictive. The reality of many industrial plants is quite different, which has a negative influence on the overall profitability of the plant. [...]
