UHAUL PROPANE EXAM STUDY GUIDE 2026
COMPLETE QUESTIONS WITH CORRECT
DETAILED ANSWERS || 100% GUARANTEED
PASS <LATEST VERSION>
Section 1: Safety & Regulations (Questions 1-30)
1. What is the primary purpose of a propane cylinder's pressure relief valve?
A. To regulate the flow of gas to the appliance
B. To release excess pressure if the cylinder overheats, preventing rupture
C. To allow filling of the cylinder
D. To indicate the fuel level
2. According to DOT regulations, when must a propane cylinder be requalified?
A. Every 5 years for most customer cylinders
B. Every 10 years
C. Every time it is refilled
D. Only if it is visibly damaged
3. What is the maximum fill level (capacity) for a propane cylinder?
A. 100% of its volume
B. 95% of its water capacity to allow for liquid expansion
C. 80% of its tare weight
D. It can be filled until propane is seen at the valve
4. What should you do if you smell a strong odor of rotten eggs or skunk spray near a propane
cylinder?
A. Immediately notify a supervisor and clear the area. Do not operate electrical switches or
create sparks.
B. Immediately attempt to tighten the valve with a wrench.
C. Use a lighter to check for a visible flame at the connections.
D. Ignore it, as propane additives are sometimes pungent.
5. The "odor fade" phenomenon in propane means:
A. The smell gets stronger over time.
B. The ethyl mercaptan odorant can lose its potency due to oxidation, adsorption, or
,contamination.
C. Propane is naturally odorless and can never be reliably smelled.
D. It only happens in old cylinders.
6. A customer's cylinder has a significant dent on the weld seam. You should:
A. Refill it, as dents are only cosmetic.
B. Condemn the cylinder and tag it "Unfit for Service." Do not refill.
C. Fill it slowly and warn the customer.
D. Only fill it to 50% capacity.
7. Personal Protective Equipment (PPE) for handling propane should always include:
A. A face shield and flame-resistant gloves
B. Just regular work gloves
C. Noise-canceling headphones
D. Steel-toed boots only
8. The safe distance to keep propane cylinders from open flames, sparks, or ignition sources is
at least:
A. 5 feet
B. 10 feet
C. 20 feet
D. 1 foot
9. What does the OPD (Overfilling Prevention Device) on a propane cylinder do?
A. It prevents gas flow if a hose ruptures.
B. It shuts off the flow of liquid propane when the cylinder reaches 80% capacity.
C. It regulates pressure going to the appliance.
D. It is a secondary pressure relief valve.
10. If a propane cylinder valve is leaking and you cannot stop it, you should:
A. Move it to a remote, well-ventilated area and call the fire department.
B. Try to plug the leak with a rag.
C. Submerge it in a water tank.
D. Throw it in a dumpster.
11. What is the purpose of the cylinder collar?
A. To protect the valve assembly and display critical information (WC, TW, dates).
B. To make the cylinder easier to carry.
C. It is only a manufacturer's decoration.
D. To secure the cylinder in a trunk.
,12. Before filling a cylinder, you must always:
A. Check for certification date, inspect for damage, and verify it has an OPD valve.
B. Weigh it to determine if it's completely empty.
C. Purge it with air to remove all old gas.
D. Ask the customer how long they've owned it.
13. A cylinder with visible, heavy rust that is scaling or pitting should be:
A. Wire-brushed and painted.
B. Filled as usual.
C. Condemned and tagged out of service.
D. Only used for vapor service.
14. The emergency number for the U-Haul Propane Leak Hotline is:
A. 911
B. 1-800-528-0355
C. 1-800-GO-U-HAUL
D. The number on the local fire department.
15. Propane gas is:
A. Lighter than air and rises.
B. Heavier than air and settles in low areas.
C. The same weight as air.
D. Only dangerous in its liquid form.
16. When transporting cylinders in a vehicle, they must be:
A. Lying down in the trunk.
B. Upright and securely fastened.
C. Placed under the seats.
D. It doesn't matter as long as the valve is closed.
17. What does the tare weight (TW) stamped on the cylinder collar mean?
A. The total weight of the cylinder when full.
B. The weight of the cylinder when completely empty.
C. The weight of propane it can hold.
D. The factory manufacturing code.
18. The water capacity (WC) is:
A. The amount of propane in gallons the cylinder holds.
B. The total weight of water the cylinder can hold in pounds.
, C. The amount of water needed to cool the cylinder.
D. Not important for filling.
19. A cylinder with a missing or damaged foot ring should:
A. Be filled carefully while holding it upright.
B. Be rejected and not filled.
C. Be placed on its side to fill.
D. Have a new foot ring welded on.
20. Who is responsible for the safe condition of a propane cylinder?
A. The original manufacturer only.
B. The last person who filled it.
C. The customer only.
D. The DOT, not the U-Haul associate.
21. What is the first step in responding to a minor propane leak at the fill station?
A. Evacuate the entire neighborhood.
B. Shut off the main supply valve to the bulk tank.
C. Call your supervisor on their personal phone.
D. Attempt to find the leak with a match.
22. A cylinder valve has a damaged or missing safety cap. You should:
A. Fill it and tell the customer to buy a new cap.
B. Reject the cylinder; the valve must be protected.
C. Use a plastic bag as a temporary cap.
D. It's optional, so fill it anyway.
23. The "80% fill rule" exists primarily because:
A. It leaves room for customers to exchange at any location.
B. Liquid propane expands with temperature and needs ullage space.
C. Scales are only accurate to 80%.
D. It makes the cylinder lighter to carry.
24. After filling a cylinder, you should always:
A. Check for leaks at the valve and connections with a leak detector or soap solution.
B. Wipe it down with a dry cloth.
C. Immediately hand it to the customer.
D. Label it with the date it needs to be used by.
25. When filling cylinders, the area should be classified as a:
A. No-smoking area only.
COMPLETE QUESTIONS WITH CORRECT
DETAILED ANSWERS || 100% GUARANTEED
PASS <LATEST VERSION>
Section 1: Safety & Regulations (Questions 1-30)
1. What is the primary purpose of a propane cylinder's pressure relief valve?
A. To regulate the flow of gas to the appliance
B. To release excess pressure if the cylinder overheats, preventing rupture
C. To allow filling of the cylinder
D. To indicate the fuel level
2. According to DOT regulations, when must a propane cylinder be requalified?
A. Every 5 years for most customer cylinders
B. Every 10 years
C. Every time it is refilled
D. Only if it is visibly damaged
3. What is the maximum fill level (capacity) for a propane cylinder?
A. 100% of its volume
B. 95% of its water capacity to allow for liquid expansion
C. 80% of its tare weight
D. It can be filled until propane is seen at the valve
4. What should you do if you smell a strong odor of rotten eggs or skunk spray near a propane
cylinder?
A. Immediately notify a supervisor and clear the area. Do not operate electrical switches or
create sparks.
B. Immediately attempt to tighten the valve with a wrench.
C. Use a lighter to check for a visible flame at the connections.
D. Ignore it, as propane additives are sometimes pungent.
5. The "odor fade" phenomenon in propane means:
A. The smell gets stronger over time.
B. The ethyl mercaptan odorant can lose its potency due to oxidation, adsorption, or
,contamination.
C. Propane is naturally odorless and can never be reliably smelled.
D. It only happens in old cylinders.
6. A customer's cylinder has a significant dent on the weld seam. You should:
A. Refill it, as dents are only cosmetic.
B. Condemn the cylinder and tag it "Unfit for Service." Do not refill.
C. Fill it slowly and warn the customer.
D. Only fill it to 50% capacity.
7. Personal Protective Equipment (PPE) for handling propane should always include:
A. A face shield and flame-resistant gloves
B. Just regular work gloves
C. Noise-canceling headphones
D. Steel-toed boots only
8. The safe distance to keep propane cylinders from open flames, sparks, or ignition sources is
at least:
A. 5 feet
B. 10 feet
C. 20 feet
D. 1 foot
9. What does the OPD (Overfilling Prevention Device) on a propane cylinder do?
A. It prevents gas flow if a hose ruptures.
B. It shuts off the flow of liquid propane when the cylinder reaches 80% capacity.
C. It regulates pressure going to the appliance.
D. It is a secondary pressure relief valve.
10. If a propane cylinder valve is leaking and you cannot stop it, you should:
A. Move it to a remote, well-ventilated area and call the fire department.
B. Try to plug the leak with a rag.
C. Submerge it in a water tank.
D. Throw it in a dumpster.
11. What is the purpose of the cylinder collar?
A. To protect the valve assembly and display critical information (WC, TW, dates).
B. To make the cylinder easier to carry.
C. It is only a manufacturer's decoration.
D. To secure the cylinder in a trunk.
,12. Before filling a cylinder, you must always:
A. Check for certification date, inspect for damage, and verify it has an OPD valve.
B. Weigh it to determine if it's completely empty.
C. Purge it with air to remove all old gas.
D. Ask the customer how long they've owned it.
13. A cylinder with visible, heavy rust that is scaling or pitting should be:
A. Wire-brushed and painted.
B. Filled as usual.
C. Condemned and tagged out of service.
D. Only used for vapor service.
14. The emergency number for the U-Haul Propane Leak Hotline is:
A. 911
B. 1-800-528-0355
C. 1-800-GO-U-HAUL
D. The number on the local fire department.
15. Propane gas is:
A. Lighter than air and rises.
B. Heavier than air and settles in low areas.
C. The same weight as air.
D. Only dangerous in its liquid form.
16. When transporting cylinders in a vehicle, they must be:
A. Lying down in the trunk.
B. Upright and securely fastened.
C. Placed under the seats.
D. It doesn't matter as long as the valve is closed.
17. What does the tare weight (TW) stamped on the cylinder collar mean?
A. The total weight of the cylinder when full.
B. The weight of the cylinder when completely empty.
C. The weight of propane it can hold.
D. The factory manufacturing code.
18. The water capacity (WC) is:
A. The amount of propane in gallons the cylinder holds.
B. The total weight of water the cylinder can hold in pounds.
, C. The amount of water needed to cool the cylinder.
D. Not important for filling.
19. A cylinder with a missing or damaged foot ring should:
A. Be filled carefully while holding it upright.
B. Be rejected and not filled.
C. Be placed on its side to fill.
D. Have a new foot ring welded on.
20. Who is responsible for the safe condition of a propane cylinder?
A. The original manufacturer only.
B. The last person who filled it.
C. The customer only.
D. The DOT, not the U-Haul associate.
21. What is the first step in responding to a minor propane leak at the fill station?
A. Evacuate the entire neighborhood.
B. Shut off the main supply valve to the bulk tank.
C. Call your supervisor on their personal phone.
D. Attempt to find the leak with a match.
22. A cylinder valve has a damaged or missing safety cap. You should:
A. Fill it and tell the customer to buy a new cap.
B. Reject the cylinder; the valve must be protected.
C. Use a plastic bag as a temporary cap.
D. It's optional, so fill it anyway.
23. The "80% fill rule" exists primarily because:
A. It leaves room for customers to exchange at any location.
B. Liquid propane expands with temperature and needs ullage space.
C. Scales are only accurate to 80%.
D. It makes the cylinder lighter to carry.
24. After filling a cylinder, you should always:
A. Check for leaks at the valve and connections with a leak detector or soap solution.
B. Wipe it down with a dry cloth.
C. Immediately hand it to the customer.
D. Label it with the date it needs to be used by.
25. When filling cylinders, the area should be classified as a:
A. No-smoking area only.
