South Carolina Liquefied Petroleum Gas Dealer/Installer (Qualifier)
Actual Exam 2026/2027 Update Recommended Questions and
Answers Graded A+ | Pdf
Coverage
Section Title Primary Coverage Areas
Section SC Code of Laws Title Licensing fees, Board powers, penalties for unlicensed work,
1 40, Chapter 82 and insurance requirements.
Section SC Code of Regulations Administrative rules, the "Qualifier" requirement for each
2 71-8304.1 location, and odorization standards.
Section NFPA 58: LP-Gas Code The "Outside" Book: Tank clearances, bulk plant safety,
3 liquid transfer, bobtail trucks, and container design.
Section NFPA 54: National Fuel The "Inside" Book: Pipe sizing, appliance installation,
4 Gas Code venting (chimneys), and pressure testing house lines.
1. What is the specific gravity of Propane vapor compared to air?
A) 0.50
B) 1.00
C) 1.50
D) 2.00
Answer: C
Propane is heavier than air (1.50), meaning it will settle in low areas like basements or
trenches. NFPA 58
2. What is the required odorant ratio for LP gas in South Carolina?
A) 0.5 lbs per 10,000 gallons
B) 1.0 lbs per 10,000 gallons
C) 1.5 lbs per 10,000 gallons
D) 2.0 lbs per 10,000 gallons
Answer: B
State law mandates 1.0 lb of Ethyl Mercaptan per 10k gallons so that the gas is
detectable at 1/5th the lower flammable limit. S.C. Regulation 71-8304.1
3. In South Carolina, a "temporary" installation is defined as one not exceeding:
A) 3 months
, B) 6 months
C) 12 months
D) 24 months
Answer: B
Any installation lasting longer than 6 months is considered permanent and must meet
more stringent foundation and piping rules. S.C. Code Title 40-82
4. At what temperature does Propane boil at atmospheric pressure?
A) 32°F
B) 0°F
C) -44°F
D) -50°F
Answer: C
Because its boiling point is -44°F, propane stays a liquid only when under pressure in a
container.
5. Which agency regulates the design and construction of LP-Gas cylinders?
A) ASME
B) OSHA
C) DOT
D) EPA
Answer: C
Portable containers (cylinders) are governed by the Department of Transportation,
whereas stationary tanks are governed by ASME. 49 CFR Part 178
6. What is the minimum passing score for the SC LP Gas Dealer Exam?
A) 60%
B) 70%
C) 75%
D) 80%
Answer: B
The SC LP Gas Board requires a 70% score to qualify for a license. LLR Exam Info
7. How many inches of water column (WC) are in 1 PSI?
A) 11"
B) 14"
C) 27.7"
D) 32"
, Answer: C
This is a critical conversion for testing house lines; 11" WC is the standard pressure for
appliances.
8. What color should an ASME storage tank be painted?
A) Dark green to blend with landscaping
B) Red for safety
C) Black to absorb heat
D) White or a light reflective color
Answer: D
Light colors reflect solar heat, preventing the internal pressure from rising high enough
to pop the relief valve. NFPA 58 6.6.1.4
9. The "Point of Delivery" for an LP gas system is typically:
A) The tank service valve
B) The outlet of the first-stage regulator
C) The inlet of the appliance
D) The gas meter
Answer: B
The point of delivery defines where the supplier's responsibility ends and the customer's
piping begins.
10. A DOT cylinder must be requalified how many years after its date of
manufacture?
A) 5 years
B) 10 years
C) 12 years
D) 15 years
Answer: C
Under current DOT rules, the initial requalification is at 12 years; subsequent periods
vary by method (5, 10, or 12 years). PHMSA Requalification Guide
11. What is the maximum filling capacity of a standard LP tank by volume?
A) 80%
B) 90%
C) 95%
D) 100%
Answer: A
, Liquid propane expands as it warms; the 20% "vapor space" prevents the tank from
becoming liquid-full and rupturing.
12. Which valve is designed to shut off gas flow automatically if a line ruptures?
A) Relief valve
B) Excess flow valve
C) Internal valve
D) Service valve
Answer: B
Excess flow valves sense a sudden drop in pressure/increase in flow and "slug" shut to
prevent a massive leak.
13. How far must a 500-gallon ASME tank be from a building opening?
A) 5 feet
B) 10 feet
C) 25 feet
D) 50 feet
Answer: B
NFPA 58 Table 6.3.1 requires 10 feet for containers 125 to 500 gallons. NFPA 58 Table
6.3.1
14. What does "WC" stamped on a DOT cylinder represent?
A) Water Capacity
B) Working Condition
C) Weight of Cylinder
D) Water Column
Answer: A
Water Capacity is used to calculate how many pounds of propane the cylinder can
safely hold.
15. A 20lb dry chemical fire extinguisher (B:C) is required at:
A) Every residential tank
B) Bulk plants and delivery trucks
C) Inside the customer's kitchen
D) Only at the board office
Answer: B
SC regulations and NFPA 58 require high-capacity extinguishers for industrial and
transport operations.
Actual Exam 2026/2027 Update Recommended Questions and
Answers Graded A+ | Pdf
Coverage
Section Title Primary Coverage Areas
Section SC Code of Laws Title Licensing fees, Board powers, penalties for unlicensed work,
1 40, Chapter 82 and insurance requirements.
Section SC Code of Regulations Administrative rules, the "Qualifier" requirement for each
2 71-8304.1 location, and odorization standards.
Section NFPA 58: LP-Gas Code The "Outside" Book: Tank clearances, bulk plant safety,
3 liquid transfer, bobtail trucks, and container design.
Section NFPA 54: National Fuel The "Inside" Book: Pipe sizing, appliance installation,
4 Gas Code venting (chimneys), and pressure testing house lines.
1. What is the specific gravity of Propane vapor compared to air?
A) 0.50
B) 1.00
C) 1.50
D) 2.00
Answer: C
Propane is heavier than air (1.50), meaning it will settle in low areas like basements or
trenches. NFPA 58
2. What is the required odorant ratio for LP gas in South Carolina?
A) 0.5 lbs per 10,000 gallons
B) 1.0 lbs per 10,000 gallons
C) 1.5 lbs per 10,000 gallons
D) 2.0 lbs per 10,000 gallons
Answer: B
State law mandates 1.0 lb of Ethyl Mercaptan per 10k gallons so that the gas is
detectable at 1/5th the lower flammable limit. S.C. Regulation 71-8304.1
3. In South Carolina, a "temporary" installation is defined as one not exceeding:
A) 3 months
, B) 6 months
C) 12 months
D) 24 months
Answer: B
Any installation lasting longer than 6 months is considered permanent and must meet
more stringent foundation and piping rules. S.C. Code Title 40-82
4. At what temperature does Propane boil at atmospheric pressure?
A) 32°F
B) 0°F
C) -44°F
D) -50°F
Answer: C
Because its boiling point is -44°F, propane stays a liquid only when under pressure in a
container.
5. Which agency regulates the design and construction of LP-Gas cylinders?
A) ASME
B) OSHA
C) DOT
D) EPA
Answer: C
Portable containers (cylinders) are governed by the Department of Transportation,
whereas stationary tanks are governed by ASME. 49 CFR Part 178
6. What is the minimum passing score for the SC LP Gas Dealer Exam?
A) 60%
B) 70%
C) 75%
D) 80%
Answer: B
The SC LP Gas Board requires a 70% score to qualify for a license. LLR Exam Info
7. How many inches of water column (WC) are in 1 PSI?
A) 11"
B) 14"
C) 27.7"
D) 32"
, Answer: C
This is a critical conversion for testing house lines; 11" WC is the standard pressure for
appliances.
8. What color should an ASME storage tank be painted?
A) Dark green to blend with landscaping
B) Red for safety
C) Black to absorb heat
D) White or a light reflective color
Answer: D
Light colors reflect solar heat, preventing the internal pressure from rising high enough
to pop the relief valve. NFPA 58 6.6.1.4
9. The "Point of Delivery" for an LP gas system is typically:
A) The tank service valve
B) The outlet of the first-stage regulator
C) The inlet of the appliance
D) The gas meter
Answer: B
The point of delivery defines where the supplier's responsibility ends and the customer's
piping begins.
10. A DOT cylinder must be requalified how many years after its date of
manufacture?
A) 5 years
B) 10 years
C) 12 years
D) 15 years
Answer: C
Under current DOT rules, the initial requalification is at 12 years; subsequent periods
vary by method (5, 10, or 12 years). PHMSA Requalification Guide
11. What is the maximum filling capacity of a standard LP tank by volume?
A) 80%
B) 90%
C) 95%
D) 100%
Answer: A
, Liquid propane expands as it warms; the 20% "vapor space" prevents the tank from
becoming liquid-full and rupturing.
12. Which valve is designed to shut off gas flow automatically if a line ruptures?
A) Relief valve
B) Excess flow valve
C) Internal valve
D) Service valve
Answer: B
Excess flow valves sense a sudden drop in pressure/increase in flow and "slug" shut to
prevent a massive leak.
13. How far must a 500-gallon ASME tank be from a building opening?
A) 5 feet
B) 10 feet
C) 25 feet
D) 50 feet
Answer: B
NFPA 58 Table 6.3.1 requires 10 feet for containers 125 to 500 gallons. NFPA 58 Table
6.3.1
14. What does "WC" stamped on a DOT cylinder represent?
A) Water Capacity
B) Working Condition
C) Weight of Cylinder
D) Water Column
Answer: A
Water Capacity is used to calculate how many pounds of propane the cylinder can
safely hold.
15. A 20lb dry chemical fire extinguisher (B:C) is required at:
A) Every residential tank
B) Bulk plants and delivery trucks
C) Inside the customer's kitchen
D) Only at the board office
Answer: B
SC regulations and NFPA 58 require high-capacity extinguishers for industrial and
transport operations.
