New Mexico LP-9 Station for Dispensing LP-
Gas Practice Exam Questions And Correct
Answers (Verified Answers) Plus Rationales
2026 Q&A | Instant Download Pdf
1. What is the primary hazard associated with LP-gas?
A. Electrical shock
B. Corrosive burns
C. Fire and explosion
D. Radiation
LP-gas is highly flammable and can explode if leaked and ignited.
2. What is the maximum allowable vapor pressure for LP-gas storage
in a container at 100°F?
A. 50 psi
B. 100 psi
C. 250 psi
D. 400 psi
LP-gas vapor pressure varies with temperature; at 100°F, the
maximum allowable pressure is 250 psi.
3. How often should LP-gas cylinders be inspected?
A. Every month
B. Every 6 months
C. Every 12 years
D. Every 5 years
, DOT regulations require cylinders to be requalified every 12
years.
4. What is the safe distance between an LP-gas dispenser and a
building?
A. 5 feet
B. 10 feet
C. 25 feet
D. 50 feet
NFPA standards specify a minimum distance of 25 feet from
buildings.
5. What is the primary purpose of a vapor return line at a dispensing
station?
A. To increase flow rate
B. To return excess vapor to storage
C. To filter impurities
D. To cool the gas
Vapor return lines prevent overpressure by returning vapor to
the storage tank.
6. Which color is commonly used to identify LP-gas piping?
A. Blue
B. Red
C. Yellow
D. Green
Yellow is the standard color for LP-gas piping for safety
identification.
7. When transferring LP-gas, what is the correct procedure to
prevent static discharge?
, A. Wear rubber gloves
B. Bond and ground the containers
C. Pour slowly without touching
D. Use a plastic funnel
Bonding and grounding prevent static electricity from igniting
LP-gas vapors.
8. What is the maximum fill level for an LP-gas cylinder?
A. 50%
B. 75%
C. 80%
D. 90%
LP-gas cylinders are only filled to 80% of liquid capacity to allow
for expansion.
9. What should you do if an LP-gas leak is detected?
A. Ignore it
B. Spray with water
C. Evacuate the area and notify emergency services
D. Cover with a cloth
LP-gas is highly flammable; immediate evacuation and reporting
is essential.
10. Which device prevents overfilling of LP-gas cylinders?
A. Pressure relief valve
B. Flow meter
C. Automatic shut-off device
D. Regulator
Automatic shut-off devices stop the filling process when the
cylinder reaches 80% capacity.
Gas Practice Exam Questions And Correct
Answers (Verified Answers) Plus Rationales
2026 Q&A | Instant Download Pdf
1. What is the primary hazard associated with LP-gas?
A. Electrical shock
B. Corrosive burns
C. Fire and explosion
D. Radiation
LP-gas is highly flammable and can explode if leaked and ignited.
2. What is the maximum allowable vapor pressure for LP-gas storage
in a container at 100°F?
A. 50 psi
B. 100 psi
C. 250 psi
D. 400 psi
LP-gas vapor pressure varies with temperature; at 100°F, the
maximum allowable pressure is 250 psi.
3. How often should LP-gas cylinders be inspected?
A. Every month
B. Every 6 months
C. Every 12 years
D. Every 5 years
, DOT regulations require cylinders to be requalified every 12
years.
4. What is the safe distance between an LP-gas dispenser and a
building?
A. 5 feet
B. 10 feet
C. 25 feet
D. 50 feet
NFPA standards specify a minimum distance of 25 feet from
buildings.
5. What is the primary purpose of a vapor return line at a dispensing
station?
A. To increase flow rate
B. To return excess vapor to storage
C. To filter impurities
D. To cool the gas
Vapor return lines prevent overpressure by returning vapor to
the storage tank.
6. Which color is commonly used to identify LP-gas piping?
A. Blue
B. Red
C. Yellow
D. Green
Yellow is the standard color for LP-gas piping for safety
identification.
7. When transferring LP-gas, what is the correct procedure to
prevent static discharge?
, A. Wear rubber gloves
B. Bond and ground the containers
C. Pour slowly without touching
D. Use a plastic funnel
Bonding and grounding prevent static electricity from igniting
LP-gas vapors.
8. What is the maximum fill level for an LP-gas cylinder?
A. 50%
B. 75%
C. 80%
D. 90%
LP-gas cylinders are only filled to 80% of liquid capacity to allow
for expansion.
9. What should you do if an LP-gas leak is detected?
A. Ignore it
B. Spray with water
C. Evacuate the area and notify emergency services
D. Cover with a cloth
LP-gas is highly flammable; immediate evacuation and reporting
is essential.
10. Which device prevents overfilling of LP-gas cylinders?
A. Pressure relief valve
B. Flow meter
C. Automatic shut-off device
D. Regulator
Automatic shut-off devices stop the filling process when the
cylinder reaches 80% capacity.
