North Carolina Public Utilities Fuel Distribution
Exam 2025–2026– Questions, Correct Answers, and
Verified Rationales
1. Whatis theprimarypurposeof a fueldistributionsystem?
a) To generateelectricity
b) To storewater
c) To safelytransportfuelfrom thesourceto theenduser
d) To purifyfuel
Rationale:The primarypurposeis to safelyand efficientlydeliverfuelfrom production
or storage to consumers.
2. Which materialis mostcommonlyusedfor undergroundfuelpipelines?
a) Aluminum
b) Steel
c) Copper
d) Plastic
Rationale:Steelis preferredfor undergroundfuelpipelinesdueto its strength and
durability under pressure.
3. Whatis theprimaryhazardassociatedwithgasolinedistribution?
a) Corrosion
b) Flammability
c) Freezing
d) Radioactivity
Rationale:Gasolineis highlyflammable,makingfire and explosionthemain hazards.
,4. Whatdeviceis usedto preventover-pressurizationin fuelstoragetanks?
a) Flow meter
b) Check valve
c) Pressurereliefvalve
d) Pump
Rationale:Pressurereliefvalvesreleaseexcesspressureto preventtankrupture.
5. The maximumallowableleakratefor a pipelineis usuallyspecifiedby:
a) Local fire codes
b) Federaland stateregulations
c) Manufacturerrecommendations
d) Insurancecompanies
Rationale:Regulatorybodiesdefineleakratelimitsto ensureenvironmental and
public safety.
6. Which methodis commonlyusedto detectleaksin fuel pipelines?
a) Visual inspection
b) Pressuretesting
c) Electronicleakdetectionsensors
d) Manualsampling
Rationale:Sensorscan continuouslymonitorpipelinesfor leaks,providing rapid
alerts.
7. Whatis theprimarypurposeof a filterin a fueldistributionsystem?
a) To heatfuel
b) To increasepressure
c) To removeimpuritiesandprotectequipment
d) To measureflow
Rationale:Filterspreventcontaminantsfromreachingpumps,engines,and other
downstream equipment.
8. Which fire classis gasolineconsidered?
a) Class A
,b) Class B
, c) Class B
d) Class C
Rationale:Class B firesinvolveflammableliquidslike gasoline,oil, and fuel.
9. Whatis thesafestwayto shutdowna fuel pumpduring an emergency?
a) Disconnectthepowercord
b) Use theemergencystopbutton
c) Close thenearestvalvemanually
d) Wait for thepumpto finish its cycle
Rationale:Emergencystopbuttonsaredesignedto safelyand quicklyhalt pump
operation.
10. Which of thefollowingis a critical safetyrequirementfor fuelstorage
areas?
a) They mustbeindoors
b) They mustbepaintedred
c) They musthaveproperventilationandfire suppression
d) They musthavea watersupply
Rationale:Properventilationreducesvaporbuildup,and fire suppression systems
mitigate fire risks.
11. Whattypeof valveallowsfuelflowin only onedirection?
a) Gatevalve
b) Check valve
c) Ball valve
d) Butterflyvalve
Rationale:Checkvalvespreventbackflow,whichcouldcauseleaksor damage.
12. Whatis a commonsign of corrosionin undergroundpipelines?
a) Excesspressure
b) Low flowrate
c) Rust stainsor leaksat joints
d) High temperature
Rationale:Corrosionoftenmanifestsas rustor leakagealongpipelines.
Exam 2025–2026– Questions, Correct Answers, and
Verified Rationales
1. Whatis theprimarypurposeof a fueldistributionsystem?
a) To generateelectricity
b) To storewater
c) To safelytransportfuelfrom thesourceto theenduser
d) To purifyfuel
Rationale:The primarypurposeis to safelyand efficientlydeliverfuelfrom production
or storage to consumers.
2. Which materialis mostcommonlyusedfor undergroundfuelpipelines?
a) Aluminum
b) Steel
c) Copper
d) Plastic
Rationale:Steelis preferredfor undergroundfuelpipelinesdueto its strength and
durability under pressure.
3. Whatis theprimaryhazardassociatedwithgasolinedistribution?
a) Corrosion
b) Flammability
c) Freezing
d) Radioactivity
Rationale:Gasolineis highlyflammable,makingfire and explosionthemain hazards.
,4. Whatdeviceis usedto preventover-pressurizationin fuelstoragetanks?
a) Flow meter
b) Check valve
c) Pressurereliefvalve
d) Pump
Rationale:Pressurereliefvalvesreleaseexcesspressureto preventtankrupture.
5. The maximumallowableleakratefor a pipelineis usuallyspecifiedby:
a) Local fire codes
b) Federaland stateregulations
c) Manufacturerrecommendations
d) Insurancecompanies
Rationale:Regulatorybodiesdefineleakratelimitsto ensureenvironmental and
public safety.
6. Which methodis commonlyusedto detectleaksin fuel pipelines?
a) Visual inspection
b) Pressuretesting
c) Electronicleakdetectionsensors
d) Manualsampling
Rationale:Sensorscan continuouslymonitorpipelinesfor leaks,providing rapid
alerts.
7. Whatis theprimarypurposeof a filterin a fueldistributionsystem?
a) To heatfuel
b) To increasepressure
c) To removeimpuritiesandprotectequipment
d) To measureflow
Rationale:Filterspreventcontaminantsfromreachingpumps,engines,and other
downstream equipment.
8. Which fire classis gasolineconsidered?
a) Class A
,b) Class B
, c) Class B
d) Class C
Rationale:Class B firesinvolveflammableliquidslike gasoline,oil, and fuel.
9. Whatis thesafestwayto shutdowna fuel pumpduring an emergency?
a) Disconnectthepowercord
b) Use theemergencystopbutton
c) Close thenearestvalvemanually
d) Wait for thepumpto finish its cycle
Rationale:Emergencystopbuttonsaredesignedto safelyand quicklyhalt pump
operation.
10. Which of thefollowingis a critical safetyrequirementfor fuelstorage
areas?
a) They mustbeindoors
b) They mustbepaintedred
c) They musthaveproperventilationandfire suppression
d) They musthavea watersupply
Rationale:Properventilationreducesvaporbuildup,and fire suppression systems
mitigate fire risks.
11. Whattypeof valveallowsfuelflowin only onedirection?
a) Gatevalve
b) Check valve
c) Ball valve
d) Butterflyvalve
Rationale:Checkvalvespreventbackflow,whichcouldcauseleaksor damage.
12. Whatis a commonsign of corrosionin undergroundpipelines?
a) Excesspressure
b) Low flowrate
c) Rust stainsor leaksat joints
d) High temperature
Rationale:Corrosionoftenmanifestsas rustor leakagealongpipelines.
