Fuel Oil

Question 1

What EOSS is used for F/O?

Answer 1

FOTG

Question 2

What are the pumps rated at?

Answer 2

Fast 72gpm 105psi

Slow 36gpm 105psi

Question 3

What is the purpose of the unloading valve?

Answer 3

Maintains 35psi

Fails shut in loss of LP air

Question 4

What are the parameters for the F/O heater?

Answer 4

3 SVC heaters
FWD GTM's and 1 GTG
AFT GTM's and 2 GTG
3 GEN
Maintains 85 degrees
Waxing 60 degrees
Flash point 140 degrees

Question 5

What are the set points on the relief valves?

Answer 5

Pump 130psi to suction side

Heater 120psi to OWS

Question 6

What is the purpose of the prefilter?

Answer 6

Removes sediment
High DP at 18psi
EOSS FOPF

Question 7

What is the purpose of the coalescer?

Answer 7

Removes sediment and water
High DP at 15psi
EOSS FOCF

Question 8

List the pump logics

Answer 8

<20psi for 2 sec: Lead kicks on to fast 
<20psi for 5 sec: All pumps stop
       F/O system assumes there is a leak
Logics are located in the SCU
Logics won't activate while in local

Question 9

What is the purpose of the Gravity Feed Tanks?

Answer 9

1&2 supplies fuel for:
   Normal source for GTG
   Emergency 5 min cool down of GTM
   Emergency 30-45 min load on GTG
3 supplies fuel for:
   Emergency 4hrs of Load on 3 GTG

Question 10

What is the EOSS for F/O transfer?

Answer 10

SSFS

RFST

Question 11

What is the transfer pump rated at?

Answer 11

110gpm 45psig
Internal relief 57psi
Interlocked with purifier

Question 12

What is the purifier rated at?

Answer 12

110gpm 20-30psig

Question 13

What are the characteristics of the storage tanks?

Answer 13

6 tank groups
Receives 3000gpm 40psi(UNREP)
Receives 400gpm 20psi(InPort)
Max Capacity
   95% Underway
   85% In Port