3.(a) State the purpose of a planned maintenance system.(4)
(b) State THREE parameters on which planned maintenance may be based.(3)
(c) State how an approved planned maintenance system can influence classification society requirements.(3)
Planned Maintenance System (PMS)
(a) Purpose of a planned maintenance system (4 marks)
- To ensure machinery and equipment are maintained systematically at correct intervals.
- To minimise risk of machinery breakdown and improve reliability/safety.
- To optimise spare parts and manpower use by planning ahead.
- To provide documentary evidence of maintenance for owners, classification societies, and flag state.
(b) Parameters on which planned maintenance may be based (3 marks)
- Running hours of machinery.
- Calendar time (e.g. monthly, annually).
- Condition monitoring (e.g. vibration analysis, oil analysis, wear down measurements).
(c) Influence of an approved PMS on classification society requirements (3 marks)
- If the PMS is approved by the classification society, survey intervals may be extended.
- Certain items may be surveyed by chief engineer’s records rather than direct inspection by a surveyor.
- Reduces frequency of intrusive inspections, as long as records demonstrate that maintenance is being properly carried out.