Page |1
Engineering Duty Officer (EDO) Questions
and Correct Answers/ Latest Update /
Already Graded
Two fuel heaters located in MER1 and MER2, are capable of heating
fuel from 40 degrees F to 80 degrees F +_ 5 at a flow rate of how many
gallons per minute at what P S I G.
Ans: 110 gallons per minute.
55 P S I G
What is the flash point for fuel oil?
Ans: 140 degrees
What is FOTG
Ans: Fuel alignment for GTG
What are fuel pumps rated at?
Ans: Slow 36 GPM
Fast 72 GPM
All rights reserved © 2025/ 2026 |
, Page |2
105 P S I
What is the fuel pump relief valve set to?
Ans: 130 P S I G
Describe the fuel unloader valve.
Ans: Regulates pressure back to the tank.
Fails shut.
LP air operated.
Designed to maintain fuel pressure at 35 P S I G.
When do you bypass the fuel heater?
Ans: In an emergency suction can be taken from storage tank
bypassing the fuel heater and purifier.
If JP-5 is to be used.
The fuel oil heater maintains header temp at what temperature?
All rights reserved © 2025/ 2026 |
, Page |3
Ans: 85 degrees F.
What does the fuel pre filter do?
Ans: Remove sediment.
What is the max DP for the fuel pre filter?
Ans: 18.
What is quick heat?
Ans: This is where the lube oil purification system to include
heater to both purify and heat the main lube oil system to 90
degrees.
When would you use quick heat?
Ans: During very cold weather or when an emergency
underway must occur.
What are the temperatures for the chill box and freeze box?
Ans: Chill box is 33 to 36 degrees.
All rights reserved © 2025/ 2026 |
Engineering Duty Officer (EDO) Questions
and Correct Answers/ Latest Update /
Already Graded
Two fuel heaters located in MER1 and MER2, are capable of heating
fuel from 40 degrees F to 80 degrees F +_ 5 at a flow rate of how many
gallons per minute at what P S I G.
Ans: 110 gallons per minute.
55 P S I G
What is the flash point for fuel oil?
Ans: 140 degrees
What is FOTG
Ans: Fuel alignment for GTG
What are fuel pumps rated at?
Ans: Slow 36 GPM
Fast 72 GPM
All rights reserved © 2025/ 2026 |
, Page |2
105 P S I
What is the fuel pump relief valve set to?
Ans: 130 P S I G
Describe the fuel unloader valve.
Ans: Regulates pressure back to the tank.
Fails shut.
LP air operated.
Designed to maintain fuel pressure at 35 P S I G.
When do you bypass the fuel heater?
Ans: In an emergency suction can be taken from storage tank
bypassing the fuel heater and purifier.
If JP-5 is to be used.
The fuel oil heater maintains header temp at what temperature?
All rights reserved © 2025/ 2026 |
, Page |3
Ans: 85 degrees F.
What does the fuel pre filter do?
Ans: Remove sediment.
What is the max DP for the fuel pre filter?
Ans: 18.
What is quick heat?
Ans: This is where the lube oil purification system to include
heater to both purify and heat the main lube oil system to 90
degrees.
When would you use quick heat?
Ans: During very cold weather or when an emergency
underway must occur.
What are the temperatures for the chill box and freeze box?
Ans: Chill box is 33 to 36 degrees.
All rights reserved © 2025/ 2026 |
