CHIEF ENGINEER Unit 11 Machinary Maintenance Q1 Answer

  1. With reference to a vessel’s maintenance:
    (a) list FOUR reasons why it is desirable for machinery to be covered by a planned maintenance system;(4)
    (b) state FOUR reasons why unscheduled maintenance may need to be performed;(4)
    (c) state ONE example of acceptable unscheduled maintenance.(2)

(a) FOUR reasons why it is desirable for machinery to be covered by a Planned Maintenance System (PMS) (4)

  1. To ensure safety of personnel and vessel by preventing failures of essential equipment.
  2. To maximise reliability and availability of machinery through timely servicing.
  3. To comply with statutory and classification society requirements.
  4. To achieve cost efficiency by reducing unexpected breakdowns and extending machinery life.

(b) FOUR reasons why unscheduled maintenance may need to be performed (4)

  1. Unexpected machinery failure during operation.
  2. Accident or damage caused by human error or external events.
  3. Wear or defects discovered during routine inspections or condition monitoring.
  4. Emergency situations where machinery must be restored to service immediately.

(c) ONE example of acceptable unscheduled maintenance (2)

  • Changing a defective light bulb in the engine room (or another small, non-critical task such as tightening a loose fitting or replacing a gauge glass).