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NM (New Mexico) LP-3S Retail Sale of LP Gas
EXAM COMPLETE QUESTIONS AND DETAILED
SOLUTIONS LATEST UPDATE THIS YEAR-JUST
RELEASED
SUMMARIZED EXAM COVERAGE (QUICK REVIEW VERSION)
The NM LP-3S Retail Sale of LP Gas exam focuses on:
• Propane behavior (pressure, vapor, liquid expansion)
• Cylinder safety (inspection, OPD valves, recertification, storage)
• Retail sale responsibilities (safe customer guidance and refusal conditions)
• Code compliance (NFPA 58 basics, hazard labeling, documentation)
• Emergency response (leak response, evacuation, fire actions)
• Safe transport and storage (upright, secured, ventilated areas)
1. A customer reports a strong propane odor near a cylinder exchange cage outside the store.
What is your first action?
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A) Spray air freshener near the cage and continue normal sales operations
B) Immediately stop sales, evacuate the area, and notify emergency responders if leak persists
C) Ask the customer to move the cylinder inside the store for inspection
D) Ignore the report unless you personally hear a hissing sound
Answer: B
Rationale: A propane odor indicates a potential leak requiring evacuation, ignition control, and
emergency notification for safety.
2. During cylinder inspection, you notice deep rust pitting around the cylinder foot ring and a dent
near the sidewall. What should you do?
A) Approve the cylinder because it still has an OPD valve installed
B) Reject the cylinder and remove it from service immediately
C) Fill the cylinder only halfway to reduce risk
D) Sell the cylinder but advise the customer to keep it outdoors
Answer: B
Rationale: Structural damage and severe corrosion are rejection conditions and can lead to
cylinder failure.
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3. A customer wants to transport a propane cylinder lying down inside the backseat of their car.
What is the correct instruction?
A) It is acceptable if the windows are slightly cracked
B) It is acceptable if the cylinder valve is tightly closed
C) The cylinder must be transported upright, secured, and preferably in a ventilated cargo area
D) The cylinder should be transported upside down to prevent vapor release
Answer: C
Rationale: Cylinders must remain upright and secured to prevent leaks and ensure relief valve
operation.
4. While selling propane, you observe a customer smoking near the cylinder storage area. What
should you do?
A) Continue the sale quickly to avoid confrontation
B) Tell the customer smoking is allowed outdoors and continue service
C) Immediately stop the activity and enforce a no-smoking safety zone
D) Ask the customer to stand behind the cage while smoking
Answer: C
Rationale: Smoking is a major ignition source and must be prohibited near propane storage and
dispensing areas.
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5. A propane cylinder is covered in frost near the valve area and is making a faint hissing noise.
What does this most likely indicate?
A) The cylinder is properly pressurized and safe for sale
B) A possible leak or rapid vapor release is occurring
C) The cylinder is empty and ready for disposal
D) The cylinder has been recently painted and is drying
Answer: B
Rationale: Frost and hissing strongly suggest propane escaping, which is hazardous and requires
immediate safety action.
6. A customer asks why propane is considered dangerous in basements or low areas. What is the
best explanation?
A) Propane rises quickly and accumulates near ceilings
B) Propane is heavier than air and can collect in low areas, creating fire and explosion risk
C) Propane becomes nonflammable when indoors
D) Propane has no odor and cannot be detected in enclosed spaces
NM (New Mexico) LP-3S Retail Sale of LP Gas
EXAM COMPLETE QUESTIONS AND DETAILED
SOLUTIONS LATEST UPDATE THIS YEAR-JUST
RELEASED
SUMMARIZED EXAM COVERAGE (QUICK REVIEW VERSION)
The NM LP-3S Retail Sale of LP Gas exam focuses on:
• Propane behavior (pressure, vapor, liquid expansion)
• Cylinder safety (inspection, OPD valves, recertification, storage)
• Retail sale responsibilities (safe customer guidance and refusal conditions)
• Code compliance (NFPA 58 basics, hazard labeling, documentation)
• Emergency response (leak response, evacuation, fire actions)
• Safe transport and storage (upright, secured, ventilated areas)
1. A customer reports a strong propane odor near a cylinder exchange cage outside the store.
What is your first action?
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A) Spray air freshener near the cage and continue normal sales operations
B) Immediately stop sales, evacuate the area, and notify emergency responders if leak persists
C) Ask the customer to move the cylinder inside the store for inspection
D) Ignore the report unless you personally hear a hissing sound
Answer: B
Rationale: A propane odor indicates a potential leak requiring evacuation, ignition control, and
emergency notification for safety.
2. During cylinder inspection, you notice deep rust pitting around the cylinder foot ring and a dent
near the sidewall. What should you do?
A) Approve the cylinder because it still has an OPD valve installed
B) Reject the cylinder and remove it from service immediately
C) Fill the cylinder only halfway to reduce risk
D) Sell the cylinder but advise the customer to keep it outdoors
Answer: B
Rationale: Structural damage and severe corrosion are rejection conditions and can lead to
cylinder failure.
, Page 3 of 107
3. A customer wants to transport a propane cylinder lying down inside the backseat of their car.
What is the correct instruction?
A) It is acceptable if the windows are slightly cracked
B) It is acceptable if the cylinder valve is tightly closed
C) The cylinder must be transported upright, secured, and preferably in a ventilated cargo area
D) The cylinder should be transported upside down to prevent vapor release
Answer: C
Rationale: Cylinders must remain upright and secured to prevent leaks and ensure relief valve
operation.
4. While selling propane, you observe a customer smoking near the cylinder storage area. What
should you do?
A) Continue the sale quickly to avoid confrontation
B) Tell the customer smoking is allowed outdoors and continue service
C) Immediately stop the activity and enforce a no-smoking safety zone
D) Ask the customer to stand behind the cage while smoking
Answer: C
Rationale: Smoking is a major ignition source and must be prohibited near propane storage and
dispensing areas.
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5. A propane cylinder is covered in frost near the valve area and is making a faint hissing noise.
What does this most likely indicate?
A) The cylinder is properly pressurized and safe for sale
B) A possible leak or rapid vapor release is occurring
C) The cylinder is empty and ready for disposal
D) The cylinder has been recently painted and is drying
Answer: B
Rationale: Frost and hissing strongly suggest propane escaping, which is hazardous and requires
immediate safety action.
6. A customer asks why propane is considered dangerous in basements or low areas. What is the
best explanation?
A) Propane rises quickly and accumulates near ceilings
B) Propane is heavier than air and can collect in low areas, creating fire and explosion risk
C) Propane becomes nonflammable when indoors
D) Propane has no odor and cannot be detected in enclosed spaces
