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ENGINEERING DUTY OFFICER (EDO) EXAM 2025 QUESTIONS AND ANSWERS

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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 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. ENGINEERING DUTY OFFICER (EDO) EXAM 2025 QUESTIONS AND ANSWERS @COPYRIGHT SIRJOEL 2025/2026 Page2 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? - 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 th

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ENGINEERING DUTY OFFICER
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ENGINEERING DUTY OFFICER

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ENGINEERING DUTY OFFICER (EDO)
EXAM 2025 QUESTIONS AND ANSWERS




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


105 P S I



What is the fuel pump relief valve set to? - ANS 130 P S I G
1
Page




Describe the fuel unloader valve. - ANS Regulates pressure back to the tank.



@COPYRIGHT SIRJOEL 2025/2026

, 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? - 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.
2
Page




@COPYRIGHT SIRJOEL 2025/2026
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ENGINEERING DUTY OFFICER
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ENGINEERING DUTY OFFICER

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Written in
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  • engineering duty officer edo exam 2025 questions
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