Engineering

Question 1

Purpose of the F/O service system.

Answer 1

(3) electric fuel pumps that provide fuel to the boilers up to 300 PSI
(2) fuel oil service tanks with a capacity of 18,000 gallons.
(24) storage tanks capacity is about 1.9 million gallons.

Question 2

State the type and location of the boilers onboard.

Answer 2

There are (2) 600 psi D-Type
Located in the Fire Room.

Question 3

Superheater

Answer 3

Heats steam from the boiler above saturation temperature, normal range 750-875 degrees.

Question 4

Economizer

Answer 4

Where fees water first enters the boiler.
Increases feed water temperature 100-200 degrees.
Enters the economizer at 250 degrees and leaves at 350-450 degrees.
One per boiler .

Question 5

Spot blowers

Answer 5

7 soot blowers per boiler .

Use steam to blow off boiler.

Question 6

Turbine forced draft blower

Answer 6

(4) total
2 steam driven force draft blowers per boiler.
Provide combustion air for the boilers
Uses 600 PSIG AUX STEAM

Question 7

Boiler safety valve

Answer 7

Protects from over pressurization
Each boiler has 3 safety valves and one pilot valve
2 steam drum boiler safety valves
1 super heater boiler safety valve

Question 8

DFT DEAERATING FEED TANK

Answer 8

Stores feed water
Preheats condensate
De-aerates condensate
15psi and 250 degrees

Question 9

Propeller

Answer 9

18’ with six blades

Question 10

Shaft

Answer 10

Thrust
Line
Stern
Tail

Question 11

Main thrust bearing

Answer 11

Provides axial movement of the main shaft

Question 12

Line shaft bearing

Answer 12

Holds and supports weight of entire shaft

Line oil 2190

Question 13

Main reduction gear

Answer 13

Converts high speed low torque from the turbine to low speed high torque to turn the shaft and move the ship through the water.

Question 14

Electro hydraulic steering unit

Answer 14

There are two electro/hydraulic pumps
One port and one starboard
One runs at a time for 24hrs
The port runs on even days and the starboard runs odd days

Question 15

Ways to steer ship

Answer 15

Remotely from bridge (helm)
Locally by trick wheel (aft steering) degree received from bridge first
Emergency hand pump (100 rotations make a degree ) hydraulic fluid moves from one to the other .

After loss of hydraulics
Chain fall assembly
Ratchet ball assembly

Question 16

SSTG SHIPS SERVICE TURBINE GENERATOR

Answer 16

Provides power for the ship

(4) located in the engine room.

Question 17

Rated capacity of SSTG

Answer 17

1200RPM
4009amps
2500kWatts
450Volts 3phase 60hertz
Runs off main steam 600psig

Question 18

Shore power

Answer 18

400 amp per cable
450 volt per cable
8 shore cables

Question 19

Catholic protection

Answer 19

Basically rust protection

Question 20

1 Fairbanks Morris 38ND 8 cylinders 16 pistons opposed piston.

Answer 20

Provides emergency power in the event of SSTG failure of loss of steam.

Question 21

Emergency Diesel Generator (EDG)

Answer 21

Located 2nd deck by fallen forward of ships store.

1604 amps
1000 kilowatts
440 volts 3 phase 60 hertz
Runs on DFM F-76 fuel oil

Question 22

A/C UNITS

Answer 22

(3)250 ton centrifugal type compressors
R-236FA refrigerant
Provides chill water to the overhead A/C units
Engine room

Question 23

Reefer units

Answer 23

(3) 8 ton reciprocating type compressors
R-134 refrigerant
Below the galley

Question 24

Four phases of the AC&R cycle

Answer 24

Compression
Condensation
Expansion
Evaporation

Question 25

HPAC HIGH PRESSURE AIR COMPRESSOR

Answer 25

3
3000 PSIG
FIREROOM
SHIPS WHISTLE/EDG/ DIVE CHAMBER

Question 26

LPAC LOW PRESSURE AIR COMPRESSOR

Answer 26

3
115-125 PSIG
AUTOMATIC BOILER CONTROLS AND PNEUMATIC TOOLS

Question 27

Water consumption

Answer 27

25 gallons a day