Louisiana Journeyman Master Gas Fitter Practice Exam
Question 1. What is the primary odorant added to natural gas for leak detection purposes?
A) Methanol
B) Ethylene
C) Mercaptan
D) Propane
Answer: C
Explanation: Mercaptan is commonly added to natural gas to give it a distinct, detectable odor for safety
purposes.
Question 2. Which code primarily governs fuel gas installation in Louisiana?
A) National Electric Code
B) International Fuel Gas Code
C) Louisiana Building Code
D) Uniform Plumbing Code
Answer: B
Explanation: The International Fuel Gas Code (IFGC) is the main standard for fuel gas installations in
Louisiana.
Question 3. What is the minimum burial depth for underground gas piping in residential areas according
to IFGC?
A) 6 inches
B) 12 inches
C) 18 inches
D) 24 inches
Answer: C
Explanation: IFGC requires at least 18 inches of burial for underground gas piping in residential
applications.
, Louisiana Journeyman Master Gas Fitter Practice Exam
Question 4. Which material is NOT approved for use in natural gas piping systems?
A) Black steel
B) Copper (for natural gas)
C) Polyethylene
D) Galvanized steel
Answer: D
Explanation: Galvanized steel is generally prohibited due to the risk of flaking and reaction with natural
gas.
Question 5. How often must a Master Gas Fitter renew their license in Louisiana?
A) Annually
B) Every two years
C) Every three years
D) Every five years
Answer: A
Explanation: Louisiana requires annual renewal of Master Gas Fitter licenses.
Question 6. Which of the following is considered a combustible material?
A) Brick
B) Concrete
C) Wood
D) Steel
Answer: C
Explanation: Wood is combustible and must be considered when determining appliance clearances.
, Louisiana Journeyman Master Gas Fitter Practice Exam
Question 7. What is the minimum test pressure for gas piping systems before being placed into service?
A) 3 psi
B) 5 psi
C) 10 psi
D) 20 psi
Answer: B
Explanation: IFGC specifies a minimum test pressure of 5 psi for new gas piping.
Question 8. Who is responsible for notifying the authority having jurisdiction before gas system
inspection?
A) Homeowner
B) Journeyman gas fitter
C) Master gas fitter
D) Building contractor
Answer: C
Explanation: The Master gas fitter is responsible for ensuring proper notifications for inspections.
Question 9. What is the typical specific gravity of natural gas?
A) 0.15
B) 0.40
C) 0.60
D) 1.00
Answer: C
Explanation: Natural gas has a specific gravity around 0.60 relative to air.
Question 10. What is the function of a sediment trap in a gas piping system?
, Louisiana Journeyman Master Gas Fitter Practice Exam
A) Reduce pressure
B) Catch moisture and debris
C) Increase flow
D) Vent air
Answer: B
Explanation: Sediment traps are designed to collect debris and moisture before it reaches sensitive
appliances.
Question 11. What color is typically used to identify natural gas piping?
A) Red
B) Yellow
C) Blue
D) Green
Answer: B
Explanation: Yellow is the standard color for natural gas piping identification.
Question 12. Which type of joint is approved for connecting steel gas pipes?
A) Soldered
B) Threaded
C) Glued
D) Welded
Answer: B
Explanation: Threaded connections are standard for steel gas piping.
Question 13. What is the minimum clearance required between a vent terminal and an operable
window?
Question 1. What is the primary odorant added to natural gas for leak detection purposes?
A) Methanol
B) Ethylene
C) Mercaptan
D) Propane
Answer: C
Explanation: Mercaptan is commonly added to natural gas to give it a distinct, detectable odor for safety
purposes.
Question 2. Which code primarily governs fuel gas installation in Louisiana?
A) National Electric Code
B) International Fuel Gas Code
C) Louisiana Building Code
D) Uniform Plumbing Code
Answer: B
Explanation: The International Fuel Gas Code (IFGC) is the main standard for fuel gas installations in
Louisiana.
Question 3. What is the minimum burial depth for underground gas piping in residential areas according
to IFGC?
A) 6 inches
B) 12 inches
C) 18 inches
D) 24 inches
Answer: C
Explanation: IFGC requires at least 18 inches of burial for underground gas piping in residential
applications.
, Louisiana Journeyman Master Gas Fitter Practice Exam
Question 4. Which material is NOT approved for use in natural gas piping systems?
A) Black steel
B) Copper (for natural gas)
C) Polyethylene
D) Galvanized steel
Answer: D
Explanation: Galvanized steel is generally prohibited due to the risk of flaking and reaction with natural
gas.
Question 5. How often must a Master Gas Fitter renew their license in Louisiana?
A) Annually
B) Every two years
C) Every three years
D) Every five years
Answer: A
Explanation: Louisiana requires annual renewal of Master Gas Fitter licenses.
Question 6. Which of the following is considered a combustible material?
A) Brick
B) Concrete
C) Wood
D) Steel
Answer: C
Explanation: Wood is combustible and must be considered when determining appliance clearances.
, Louisiana Journeyman Master Gas Fitter Practice Exam
Question 7. What is the minimum test pressure for gas piping systems before being placed into service?
A) 3 psi
B) 5 psi
C) 10 psi
D) 20 psi
Answer: B
Explanation: IFGC specifies a minimum test pressure of 5 psi for new gas piping.
Question 8. Who is responsible for notifying the authority having jurisdiction before gas system
inspection?
A) Homeowner
B) Journeyman gas fitter
C) Master gas fitter
D) Building contractor
Answer: C
Explanation: The Master gas fitter is responsible for ensuring proper notifications for inspections.
Question 9. What is the typical specific gravity of natural gas?
A) 0.15
B) 0.40
C) 0.60
D) 1.00
Answer: C
Explanation: Natural gas has a specific gravity around 0.60 relative to air.
Question 10. What is the function of a sediment trap in a gas piping system?
, Louisiana Journeyman Master Gas Fitter Practice Exam
A) Reduce pressure
B) Catch moisture and debris
C) Increase flow
D) Vent air
Answer: B
Explanation: Sediment traps are designed to collect debris and moisture before it reaches sensitive
appliances.
Question 11. What color is typically used to identify natural gas piping?
A) Red
B) Yellow
C) Blue
D) Green
Answer: B
Explanation: Yellow is the standard color for natural gas piping identification.
Question 12. Which type of joint is approved for connecting steel gas pipes?
A) Soldered
B) Threaded
C) Glued
D) Welded
Answer: B
Explanation: Threaded connections are standard for steel gas piping.
Question 13. What is the minimum clearance required between a vent terminal and an operable
window?
