- With reference to the classification of a vessel:
(a) describe how the continuous survey of machinery may be applied, stating the time interval over which the surveys take place;
(4)
(b) list SIX types of machinery that would be inspected during a continuous survey of machinery.(6)
(a) Continuous Survey of Machinery (4)
- Application:
- Instead of examining all machinery items during the 5-yearly Special Survey, the work is divided into smaller inspections carried out gradually over the 5-year survey cycle.
- Each machinery item is allocated a schedule so that all required items are inspected, tested, or overhauled within the 5 years.
- This avoids long machinery downtime and allows inspection to coincide with normal maintenance periods.
- Time Interval:
- The entire cycle of continuous machinery survey must be completed within 5 years (the special survey period).
(b) Machinery inspected during Continuous Survey of Machinery (6)
Typical items include:
- Main engines – opened up for inspection of critical parts (cylinders, pistons, bearings, etc.).
- Auxiliary engines/generators – overhauled and checked for safe operation.
- Boilers and pressure vessels – inspected internally/externally, safety valves tested.
- Pumps (e.g., bilge, ballast, fuel, cooling water) – dismantled and examined.
- Steering gear system – inspected for mechanical/hydraulic integrity and alarms.
- Shafting and propeller assemblies – including stern tube bearings and seals.
(Other items may also include air compressors, heat exchangers, oily water separators, and safety devices – depending on the vessel type.)