Term
| *4 phases of the basic steam cycle |
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Definition
Generation
Expantion
Condensation
Feed |
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Term
| *Type and location of the Boilers |
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Definition
2: 600 psi "D" type
located in the Fire room |
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Term
| what does the Superheader do |
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Definition
| heats steam above sateration temptures normal range 750-875 |
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Term
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Definition
where feed waster 1st enters the boiler
preheats feed water
increases feed water by 100-200 deg
feed water leaves at 350-450 deg
above the boiler
last in feed phase |
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Term
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Definition
largest tube in boiler
takes boiler water from the steem drum to the rear wall |
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Term
|
Definition
largest bank of tubs
where most of the steam is made |
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Term
| discribe and how many soot blowers |
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Definition
uses steam to blow soot off boiler tubes
7 per boiler |
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Term
| what does boiler safty valve do |
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Definition
protects the boiler from over-pressurization
3 safty valves and 1 pilot valve
2 steam drum and 1 superheader |
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Term
| what does the chelant water treatment system do |
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Definition
injects chemicals to maintain boiler water chemistry
does contunus blowdowns and aids in the de-aeration |
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Term
| *what is black smoke and why is it bad |
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Definition
too much fuel
you have 2 min to shutdown befor the boiler blows |
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Term
| *what is white smoke and why is it bad |
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Definition
too much air
you have 1 min to shut off befor the boiler blows |
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Term
| *discribe the burner front |
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Definition
there are 3 per boiler
uses F-76 fuel |
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Term
| *discribe the forced draft blowers |
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Definition
6 in total
3 per boiler
2 steam uses 600psi aux steam
1 electric driven used for light off |
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Term
| *how meny and discribe the main feed pump |
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Definition
2 turbine driven pumps
used to increase pressure to 800 psi 150-200 psi above operating pressure |
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Term
| * how meny and discribe the main feed booster pumps |
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Definition
there are 3
gravity fed from DFT and pumps water to the MFP |
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Term
| * what is and what does the DFT do |
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Definition
De-aerating feed Tank
Stores feed water
preheates condisate
and de-aerates condisate
maintaned at 15psi @ 250deg |
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Term
| *what does USS Frank Cable use for fuel |
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Definition
F-76 diesel fuel marine (DFM)
located on the 8th deck from frames 12 to 123 |
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Term
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Definition
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Term
| *what are the 4 parts of the shaft |
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Definition
Line shaft
thruster shaft
stern tubes
tail shaft |
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Term
| *what do the main air ejectors do |
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Definition
| removes air and non condensable gases from the main condencer, sends water to DFT and maintans the vacume |
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Term
| *2 sorces to condence the steam |
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Definition
scoop injectors for high speed ops 12kts or higher
main circulation pumps 12kts or less |
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Term
| *classify the distiling plants and how meny |
|
Definition
2
50,000 gallons/day
6 stage flash type |
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Term
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Definition
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Term
| *what does the SSTG do and how meny |
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Definition
4 in the engine room
provides power for the ship |
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Term
|
Definition
1,200 RPM
4,009 AMP
2,500KW
450v 3 phase @60 Hertz
runs off main steam 600 psi |
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Term
| *what does the Jacket water do |
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Definition
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Term
| *what is HPAC and what does it supply |
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Definition
High pressure air compressor
3 and maintains 3,000 PSI
ships whistle
dive chamber
SCBA refill station
EDG air flask |
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Term
| *what is LPAC and what does it supply |
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Definition
Low pressure air compressor
3
maintains 115-125 psi
automatic boiler controlers
pneumatic tools |
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Term
| *how meny and what type of Refer Units are on board |
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Definition
3
8 ton reciprocating compressors |
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Term
| * 4 phases of the AC&R cycle |
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Definition
Compression
Condensation
Expantion
Evaporation |
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Term
| location and perpose of the Steam Drum |
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Definition
loated on top of the boiler
directs boilerwater through the boilers steam exits the drum and go to the superheater |
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Term
| where is the water drum and its propose |
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Definition
located at the botton of the boiler
receaves feed water via the steam drum and cotains the de-superheater whitch produces aux steam |
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Term
| explain the feedwater control valve |
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Definition
| works with LP air to regulate water going to the economizer. if LP air is lost it failes in the open position |
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Term
Fuel oil quick closing valve
(FOQCV) |
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Definition
| secures fuel flow to the boiler |
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Term
| explain the Combustion Control |
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Definition
| operated by LP air. speeds up or slows down the blowers as needed |
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Term
|
Definition
| uses LP air to automaticly control the ammount of fuel going to the Safty Shut off Device (SSD's) |
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Term
|
Definition
| a safety system that protect the auto controls of the boiler in case of loss of air. It lock in the last signal sent to the force draft blower, feedwater control valve and the F/O control valve allowing tie to switch to manual. |
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Term
| explain the F/O service system |
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Definition
3 electric fuel pumps supply fuel @ 300 psi
located in the lower lvl fire room
2 F/O services tanks @ 18,000 gal
24 storage tanks total 1.9mil gals |
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Term
| explain the lube Oil cooler |
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Definition
| cools the L/O to 120-130 deg |
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