SM diesel Flashcards
State four components of the diesel exhaust system
Exhaust muffler Solenoid valve DP gauge Flap valves Expansion bellows Pressure gauge Open cooling tank Hull valve Back up valve
State two functions of the diesel air start system
Provides starting air to the diesel
Provides air at a reduced pressure for slow turning the diesel for water clearance and maintenance
Provides air to power the lube oil priming pump
Provides air to clear the exhaust mast of sea water prior to starting the engine underwater i.e. prior to snorting
Name two types of valves on the diesel air start system
Solenoid valves
Inching valve
Relief valve
Reducing valve
List the conditions that will automatically trip the diesel
Fresh water high temp- 88c
Lub oil high temp- 99c
Lub oil low pressure- 1.75 bar
Overspeed- 1380 RPM
List 5 readings that are logged when the engine is running
Engine speed -1200 RPM Oil pressure -3.8 bar Oil temp- 65c Fresh water temp -75c Individual pyrometer temp- (A bank 250c) (B bank 280c) Common exhaust temperature- 320c Salt water pressure- 1.7 bar Fresh water header tank level- 2/3 full Governor oil level -min+ Lube oil level DP- 0.2 bar Fuel ready use tank level- 800 litres Fuel used- 100 litres Air start bottle pressure- 220 bar Sump oil level-max/run L load- 400kw
Name four components of the diesel salt water system
Discharge hull valve Discharge back up valve Relief valve Salt water pump strainer Inlet hull valve Backup Inlet valve Generator air cooler FW/SW heat exchanger
State the uses of the submarine bulk fuel storage system
Store the diesel
Provide secondary shielding from the reactor
To maintain the trim of submarine as the fuel is used
List the equipment supplied by the diesel salt water system
Provides cooling for the engine fresh water/ salt water heat exchanger
Provides cooling for generator air cooler
Provides compensating water to the fuel storage tanks
Supplies external exhaust hull valve cooling
Supplies a spray into the exhaust pipe muffler
Name the components of the diesel air start system
Lube oil priming pump Reducing valve Control panel Relief valve Inching valve Motor oiler Air start motor Solenoid valve
Five main hazards associated with submarine internal combustion piston engines:
Fire hazard Mechanical hazard Personal hazard Noise hazard Exhaust hazard
What is submarine cold moves?
This refers to the situation created by a submarine needing to move from one berth to another using tugs and having no steam power avaliable
What are the checks prior to starting
Position of firefighting equipment Electrical supplies are on Auto watch keeping panel switch to 'on' Check overspeed and governor trips reset Check remote control of governor
What are the checks to shutdown
Take load off when instructed Allow temp to drop below 200c Start lube oil priming pump Stop engine with red stop button Check back up exhaust valves shut in automatic
What is the procedure for filling the submarine with diesel?
A. Water hose rigged from jetty to 1st filling and from subsequent valve to barge
B. Bulk storage tanks filled with water when discharge shows at barge tanks are full
C. Hoses return from shore fuel supply to subsequent and from 1st filling to barge
D. Start fuelling and replace water in storage tanks with fuel
E. When fuel discharge shows at barge- bulk tanks are full
F. Hoses disconnected, ensure no spillage, barged towed away
What is the camp water pressure
1 bar
