3.
(a) State THREE advantages of using condition monitoring as part of a planned maintenance system.(3)
(b) State THREE examples of criteria that could be used as a basis for condition based maintenance.(3)
(c) State FOUR reasons for keeping records of operating criteria and planned maintenance carried out.
Condition Monitoring in Planned Maintenance
(a) Advantages of using condition monitoring (3 marks)
- Detects early signs of wear or failure, allowing corrective action before breakdown occurs.
- Reduces unnecessary overhauls, saving time, cost, and manpower.
- Improves safety and reliability by ensuring machinery is maintained according to its actual condition.
(b) Examples of criteria for condition-based maintenance (3 marks)
- Lubricating oil analysis (contamination, viscosity, metal particles).
- Vibration monitoring of rotating machinery.
- Temperature/pressure trends (e.g. bearing temperatures, exhaust temperatures, cooling system pressures).
(c) Reasons for keeping records of operating criteria and maintenance carried out (4 marks)
- Provides historical data for identifying performance trends and predicting future failures.
- Demonstrates compliance with classification society and statutory requirements.
- Assists in planning spares and manpower needs.
- Acts as documentary evidence in case of accidents, insurance claims, or disputes.