2026/2027 ACCURATE QUESTIONS WITH
CORRECT DETAILED SOLUTIONS ||
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<NEWEST VERSION>
1. Amounts of LPG & CNG where permit is required - ANSWER ✔ 16.4 oz
and 8.7 SCF
2. Portable LPG AND CNG containers with a capacity greater than 16.4 oz 8.7
SCF CANNOT be stored where? - ANSWER ✔ Indoors
3. What temperature can cause pressure inside a container to increase to an
unsafe level? - ANSWER ✔ 125°F
4. What must be used to shield containers that are exposed to hot air blown by
a heating appliance? - ANSWER ✔ A protective partition
5. Control Valve - ANSWER ✔ On top of each container.
Controls the discharge of the contents of the container.
Must be opened by hand
6. Hoses - ANSWER ✔ Should be as short as possible
Cannot exceed 30 feet
7. When used inside the hose cannot pass through any
partitions/floors/walls/ceilings
8. The use of nonmetallic pipe tubing or hose for permanently interconnecting
containers is prohibited - ANSWER ✔
,9. If containers need to be moved between floors - ANSWER ✔ Use an
elevator if possible
10.When can containers be transported in vehicles? - ANSWER ✔ When they
are approved vehicles
11.When the quantity of gas is less than 400 SCF
12.How is CNG made? - ANSWER ✔ By compressing natural gas mostly
composed of methane
13.What is the max capacity of a CNG container? - ANSWER ✔ 381 SCF
14.Natural gas is heavier or lighter than ajr? - ANSWER ✔ Lighter
15.Methane gas a LEL and UEL of? - ANSWER ✔ 5% and 15%
16.Length of hose cannot exceed - ANSWER ✔ 30 feet outdoors 6 feet
indoors
17.What should you never use to check leaks? - ANSWER ✔ A flame
18.What does a bubble mean at a connection? - ANSWER ✔ There may be a
problem with the connection
19.A forklift LPG container may be mounted:
A. Upright only
B. Upside down only
C. Upright or horizontally
D. Horizontally only - ANSWER ✔ C. Upright or horizontally
20.Why can a forklift LPG container be mounted horizontally?
A. It contains less gas
B. It has a larger regulator
C. It has a special pressure relief valve
D. It has no relief valve - ANSWER ✔ C. It has a special pressure relief
valve
, 21.If a forklift LPG cylinder does NOT have an excess flow check valve, you
should:
A. Install one yourself
B. Continue using it carefully
C. Empty the cylinder first
D. Return it to the supplier - ANSWER ✔ D. Return it to the supplier
22.What should you use to check for leaks after changing a forklift LPG
cylinder?
A. A lighter
B. A match
C. Soap and water solution
D. Compressed air - ANSWER ✔ C. Soap and water solution
23.The excess flow check valve closes automatically when:
A. The cylinder becomes empty
B. The temperature exceeds 125°F
C. The regulator is damaged or the cylinder falls
D. The forklift is turned off - ANSWER ✔ C. The regulator is damaged
or the cylinder falls
24.Before opening the LPG cylinder valve, you must first:
A. Start the forklift
B. Shake the cylinder
C. Attach the regulator securely
D. Open the relief valve - ANSWER ✔ C. Attach the regulator securely
25.The forklift LPG cylinder valve should be opened:
A. With a wrench
B. One turn clockwise
C. By hand, two full turns counterclockwise
D. Completely with pliers - ANSWER ✔ C. By hand, two full turns
counterclockwise
26.The regulator discharge rate should be:
A. Increased during winter
B. Adjusted monthly
C. Changed for heavy loads