Planned Maintenance System (PMS)

Question 1

What are the 3 types of system scheduling?

Answer 1

Calendar based
Running hour based
Condition based

Question 2

What’s the longest period you can run UMS?

Answer 2

8hrs

Question 3

List some Condition based monitoring techniques?

Answer 3

• Vibration analysis
• Sampling / Testing for trend analysis e.g. Lubricating Oil
• Thermographic Surveys
• X Ray
• Ultra sound
• Crack detection

Question 4

What are the 4 different Power Card Analysis and what are they used for?

Answer 4

• PV diagrams to establish charge air compression,
• Light Spring Diagrams
  to determine Scavenge effectiveness,
• Draw cards to establish combustion pressure versus crank angle
• Delta P diagram to establish rate of change of combustion pressure against crank angle

Question 5

What are some of the functions of a Pressure-Volume Diagram?

Answer 5

To monitor and analyse the following;
- Condition of the engine
- Combustion process
- Engine timing
- Measure total power, useful power and non-useful power
- Measure peak pressure and angle of peak pressure
- Measure MEP - Mean Effective Power

Question 6

List 6 examples of periodic calibration?

Answer 6

1. Testing of lubricating oils
2. Testing of fuel oils
3. Cylinder liner calibration
4. Measuring piston rings
5. Measuring bearing clearances
6. Vibration analysis

Question 7

When testing lubricating oil, What tests are being completed?

Answer 7

• Comparison of Viscosity
• Presence of water
• Acidity/ Alkalinity
• Wear particles
• Suspended solids
• Flash point
• Fuel dilution

Question 8

The main engine lube oil results have come back with high levels of tin and lead. What could this mean?

Answer 8

• Big End bearings wear
• Main Bearings wear
• Camshaft Bearing wear
• Thrust bearing wear

Question 9

How do we read vibration analysis?

Answer 9

It usually measures both the frequency Hz and the severity (amplitude) mm/sec.

Question 10

Explain SEEMP?

Answer 10

Ships Energy Efficiency Management Plan (SEEMP) is for all vessels above 400GT. It is for the vessel and the crew to increase efficiency and reduce emissions and carbon footprint. This can be achieved by;

• Economical Speed
• Economical speed versus draft / CPP pitch angle / draught
• Trim
• Good quality fuel (cetane value, density and viscosity)
• Multi engine configurations
• Regular maintenance
• Trailing or locking one shaft
• Cargo distribution
• Use of low power lighting
• Regular Hull cleans
• Regular Propeller cleaning
• Use of stabilisers
• Educating crew to switch off unnecessary equipment
• Wavelength versus ships speed and weather (route planning)