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Glossary
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With this strategy, no regular maintenance is performed. Repairs are carried out only when equipment actually fails. This approach can be risky, as it may lead to unexpected operational interruptions, but it is sometimes applied to less critical systems.
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In condition-based maintenance, the condition of plant components is monitored continuously or at regular intervals. Maintenance activities are carried out based on the actual condition of the equipment rather than on a fixed schedule. Typical monitoring methods include vibration analysis, thermography, and acoustic monitoring.
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In corrective maintenance, maintenance and repair activities are carried out to address issues that have already occurred. In contrast to reactive maintenance, corrective maintenance is planned and systematic once the problem has been identified. This strategy aims to take prompt, targeted action to return assets to operation quickly and prevent further damage. Corrective maintenance can help minimize downtime, extend the service life of assets, and reduce operating costs.
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A modern industrial plant is a highly complex network of systems. Numerous different processes must be controlled and coordinated within it. The most important connecting element in this context is the human being. Only people are able to make the right decisions for successful process execution based on knowledge and experience.
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Similar to condition-based maintenance, preventive maintenance uses data analytics and modeling to predict when a component of a system is likely to fail. This approach makes it possible to plan maintenance activities exactly when they are most needed, often resulting in further optimization of operating times and costs.
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This type of maintenance is carried out to prevent problems before they occur. It is based on a predefined schedule and includes regular inspections as well as the replacement of components before they fail.
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In reactive maintenance, maintenance and repair activities are only carried out once a problem or system failure has occurred. This strategy is often referred to as “firefighting” or “emergency maintenance,” as the work typically has to be performed at short notice and under time pressure. This can lead to longer downtime, higher repair costs, and production losses. However, in certain cases it can be cost-effective—particularly for non-critical assets or for unpredictable issues that occur only rarely.