Cooling systems

Question 1

What medium is used to cool engine coolant?

Answer 1

Sea water

Question 2

What are the reasons for fresh water circulation systems?

Answer 2

1. Machinery is susceptible to salt water corrosion

2. Other equipment can be affected by salt water contamination

Question 3

What are the effects of machinery overheating?

Answer 3

1. Failures
2. Seizing
3. Fire/explosion
4. Wiping of bearings

Question 4

What temperature will white metal bearings wipe at?

Answer 4

115 degrees Celsius

Question 5

What machinery is supplied by the main propulsion cooling system?

Answer 5

1. Lub oil heat exchanger
2. Gas turbine heat exchanger
3. CPP unit heat exchanger
4. Plummer block heat exchanger

Question 6

What machinery is supplied by the auxiliary circulation system?

Answer 6

1. Air conditioning plant

2. Diesel plant/generators

Question 7

Who’s permission is required to cross connect the fresh water circulation system to salt water?

Answer 7

The MEO

Question 8

What can be done to allow cleaning of a strainer while the system continues to operate.

Answer 8

Cross connection to the opposite side system.

Question 9

What would be done in the event of strainer blockage or pump stoppage?

Answer 9

Cross connection would be opened to the opposite side of system.