Cooling Systems Flashcards
What are the two reasons for fresh water circulation systems?
Machinery is susceptible to salt water corrosion.
Other equipment can be effected by salt water contamination.
How is lubricant and coolant cooled?
With sea water via a heat exchanger.
What temperature will white metal bearings melt at?
115 degrees c
What can happen if machinery is not cooled correctly?
Cause fires
Equipment failure
Wiping of bearings
Equipment seizing
What machinery is supplied by the main propulsion cooling system?
Lub oil heat exchanger
Gas turbine heat exchanger
CPP unit heat exchanger
Plummer block heat exchanger
What type of system is a cooling circulation system?
Open loop
What is the X CON and what does it do?
Cross connection valve. Connects the port side to starboard side to allow one strainer to be removed and cleaned/maintained while the system is still running.
In an emergency (pump failure) what can be done and with whos permission?
Fresh water system can be cross connected to salt water with permission of the EMO
What is supplied by the auz circ system?
Diesel plant/generators
Air conditioning plant