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Testing of equipment can done under ___________
Periodic maintenance
Breakdown maintenance
Routine maintenance
Preventive maintenance
Breakdown maintenance
Breakdown maintenance is a reactive strategy where equipment is tested, repaired, or replaced only after a functional failure or breakdown has occurred. This approach assumes that the equipment operates until it fails to perform its intended task, after which diagnostic testing is performed to identify the cause of failure.
Breakdown maintenance is a reactive strategy where equipment is tested, repaired, or replaced only after a functional failure or breakdown has occurred. This approach assumes that the equipment operates until it fails to perform its intended task, after which diagnostic testing is performed to identify the cause of failure.
MTTR=Number┬аof┬аFailuresTotal┬аMaintenance┬аTimeтАЛ тАФ Mean Time To Repair, a critical metric in breakdown maintenance analysis.
When a system component fails (e.g., a short circuit in a transformer or a jammed mechanism in a circuit breaker), the protection system isolates the fault. Maintenance personnel then perform testing on the faulted component to determine the root cause, extent of damage, and necessary corrective measures to restore operations.
Known as 'run-to-failure' maintenance.
Used when the cost of downtime is significantly lower than the cost of preventive intervention.
Commonly applied to non-critical auxiliary equipment.
High risk of secondary damage to interconnected systems.
Low initial maintenance costs
No requirement for advanced diagnostic tools during normal operation
Minimal planning required
Unpredictable downtime
Potential for catastrophic failure
High emergency repair costs
Reduced asset life due to unexpected stress
Non-critical lighting systems
Redundant cooling fans
Low-cost, easily replaceable components
| Feature | Preventive | Breakdown |
|---|---|---|
Strategy Trigger | Time/Condition based | Failure event |
In power systems, critical assets like Power Transformers are rarely subjected to pure breakdown maintenance because the cost of failure is astronomical.
Preventive and Routine maintenance are proactive strategies designed to minimize the necessity for breakdown maintenance.
B is correct тАФ Breakdown maintenance involves testing and repairing equipment only after a failure has actually occurred.
Always differentiate between 'Planned' (Preventive/Routine) and 'Unplanned' (Breakdown) maintenance; in competitive exams, look for keywords like 'scheduled' vs 'post-failure'.