Describe the preparation and checks on a main propulsion system prior to going to sea.(10)
Preparation and Checks for a Main Propulsion System Prior to Going to Sea
A thorough pre-sea preparation is essential for the safe and efficient operation of a main propulsion system. Here are the key areas to focus on:
Engine Room Checks
- Lubricating Oil System: Check oil levels, pressure, and temperature. Inspect for any signs of contamination or water ingress. Ensure the oil purifier is operational.
- Cooling Water System: Verify coolant levels, pressure, and temperature. Check for leaks and ensure the seawater system is free from obstructions.
- Fuel Oil System: Inspect fuel oil tanks, filters, and lines for contamination or water. Ensure fuel pumps are functioning correctly.
- Air Starting System: Check air compressor and receiver pressures. Verify the operation of starting valves.
- Auxiliary Systems: Ensure the operation of all auxiliary systems like fuel oil heating, jacket water cooling, and lubricating oil cooling.
Engine Checks
- Engine Room Overhaul: Verify that all post-overhaul checks and adjustments have been completed.
- Cylinder Compression: Conduct a compression test to assess engine health.
- Fuel Injection System: Check injector timing, opening pressure, and spray pattern.
- Turbocharger: Inspect for any signs of damage, imbalance, or excessive wear.
- Valve Clearance: Ensure correct valve clearances for optimal engine performance.
- Engine Alignment: Verify engine and shaft alignment.
Operational Checks
- Turning Gear Operation: Test the turning gear for smooth operation and engagement.
- Starting Air System: Check the starting air pressure and valve operation.
- Emergency Shutdown System: Ensure the emergency shutdown system is operational.
- Control Systems: Verify the correct operation of all engine control systems.
- Alarm Systems: Test all engine room alarms and monitoring systems.
Additional Checks
- Seawater Strainers: Clean and inspect seawater strainers.
- Hull and Shaft Alignment: Verify hull and shaft alignment to prevent vibrations.
- Propeller Condition: Inspect the propeller for damage or cavitation.
By following these checks, you can significantly reduce the risk of breakdowns and ensure the safe and efficient operation of the main propulsion system.