Types Of Corrective Maintenance

Corrective maintenance is a reactive maintenance strategy that involves repairing or restoring equipment or systems to their normal operating condition after they have experienced a failure or malfunction. There are several types of corrective maintenance, each with its own characteristics and purposes. Here are the main types of corrective maintenance:

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1. Emergency Corrective Maintenance: Emergency maintenance is performed immediately after a critical failure occurs. The primary goal is to quickly address the issue and restore the system or equipment to normal operation. This type of maintenance is often used for safety-critical systems or when failure poses a significant risk.

2. Immediate Corrective Maintenance: Immediate corrective maintenance is carried out as soon as possible after the failure is detected. It aims to minimize downtime and prevent further damage or disruptions. While it is not as urgent as emergency maintenance, it is still a high-priority response.

3. Deferred Corrective Maintenance: In some cases, corrective maintenance may be deferred to a more convenient time, such as during scheduled shutdowns or maintenance windows. This approach is often taken when the failure does not immediately impact operations or when resources are limited.

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4. Conditional Corrective Maintenance: Conditional maintenance is based on monitoring and assessing the condition of equipment. Maintenance is performed when certain condition indicators, such as vibration levels or temperature, fall outside acceptable ranges, indicating potential issues. This approach is often used for predictive maintenance, but it can also be considered a form of corrective maintenance when issues are detected.

5. Run-to-Failure Maintenance: This is a strategy where equipment is allowed to run until it fails, and maintenance is only performed when the failure occurs. It is typically employed for non-critical or easily replaceable equipment, where the cost of preventive or proactive maintenance outweighs the cost of replacement.

6. Reactive Corrective Maintenance: Reactive maintenance is a more general term for all forms of maintenance performed in response to a failure or malfunction. It encompasses emergency, immediate, deferred, and conditional maintenance.

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The choice of which type of corrective maintenance to use depends on factors such as the criticality of the equipment or system, the impact of downtime, available resources, and the maintenance strategy of the organization. It's important to note that while corrective maintenance is necessary to address failures, proactive maintenance strategies like preventive and predictive maintenance are typically more cost-effective in the long run as they aim to prevent failures from occurring in the first place.