FDNY G24
FDNY G24 USE OF LIQUEFIED PETROLEUM GAS OR
COMPRESSED NATURAL GAS IN EMERGENCY INDOOR
REPAIR OPERATIONS PRACTICE EXAM QUESTIONS
AND CORRECT ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2026 Q&A
https://www.stuvia.com/user/MBOFFIN
, 1. What is the primary purpose of the FDNY G-24 Certificate of Fitness?
a) To supervise outdoor cooking operations using LPG
b) To supervise emergency indoor repairs using LPG or CNG
c) To supervise the use of LPG or CNG during emergency indoor
repair operations
d) To inspect LPG installations for permanent use
Rationale: The G-24 certificate is specifically required for individuals
overseeing the temporary use of LPG or CNG in emergency indoor
repair situations.
2. LPG cylinders must always be stored:
a) Horizontally for stability
b) Upright and secured from falling
c) On their side for safety
https://www.stuvia.com/user/MBOFFIN
, d) Near exits for quick access
Rationale: LPG cylinders must be stored upright to ensure the
pressure relief valve functions properly.
3. What is the maximum allowable LPG cylinder size used indoors for
emergency repairs?
a) 50 pounds
b) 20 pounds
c) 33 pounds
d) 40 pounds
Rationale: FDNY regulations restrict the indoor use of LPG to
cylinders not exceeding 20 pounds capacity.
4. When using LPG indoors for emergency repairs, what must be
ensured?
a) Adequate signage
b) Proper ventilation
c) Multiple operators
d) Closed windows
Rationale: Proper ventilation is essential to prevent accumulation of
gas and reduce fire or explosion risk.
5. What is the flash point of LPG?
a) 100°F
b) -156°F
c) 0°F
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, d) 32°F
Rationale: LPG has a very low flash point (-156°F), meaning it can
ignite easily in air at normal temperatures.
6. LPG vapor is:
a) Lighter than air
b) Heavier than air
c) The same as air
d) Non-flammable
Rationale: LPG vapor is heavier than air, causing it to settle near the
floor and increase explosion risk.
7. The pressure relief valve on a cylinder should be pointed:
a) Away from ignition sources
b) Toward the wall
c) Downward
d) Toward the user
Rationale: Relief valves release gas under pressure, so they must face
away from heat or ignition points.
8. What must be used between the cylinder and torch to regulate
pressure?
a) Adapter
b) Shutoff valve
c) Pressure regulator
d) Flashback arrestor only
https://www.stuvia.com/user/MBOFFIN
FDNY G24 USE OF LIQUEFIED PETROLEUM GAS OR
COMPRESSED NATURAL GAS IN EMERGENCY INDOOR
REPAIR OPERATIONS PRACTICE EXAM QUESTIONS
AND CORRECT ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2026 Q&A
https://www.stuvia.com/user/MBOFFIN
, 1. What is the primary purpose of the FDNY G-24 Certificate of Fitness?
a) To supervise outdoor cooking operations using LPG
b) To supervise emergency indoor repairs using LPG or CNG
c) To supervise the use of LPG or CNG during emergency indoor
repair operations
d) To inspect LPG installations for permanent use
Rationale: The G-24 certificate is specifically required for individuals
overseeing the temporary use of LPG or CNG in emergency indoor
repair situations.
2. LPG cylinders must always be stored:
a) Horizontally for stability
b) Upright and secured from falling
c) On their side for safety
https://www.stuvia.com/user/MBOFFIN
, d) Near exits for quick access
Rationale: LPG cylinders must be stored upright to ensure the
pressure relief valve functions properly.
3. What is the maximum allowable LPG cylinder size used indoors for
emergency repairs?
a) 50 pounds
b) 20 pounds
c) 33 pounds
d) 40 pounds
Rationale: FDNY regulations restrict the indoor use of LPG to
cylinders not exceeding 20 pounds capacity.
4. When using LPG indoors for emergency repairs, what must be
ensured?
a) Adequate signage
b) Proper ventilation
c) Multiple operators
d) Closed windows
Rationale: Proper ventilation is essential to prevent accumulation of
gas and reduce fire or explosion risk.
5. What is the flash point of LPG?
a) 100°F
b) -156°F
c) 0°F
https://www.stuvia.com/user/MBOFFIN
, d) 32°F
Rationale: LPG has a very low flash point (-156°F), meaning it can
ignite easily in air at normal temperatures.
6. LPG vapor is:
a) Lighter than air
b) Heavier than air
c) The same as air
d) Non-flammable
Rationale: LPG vapor is heavier than air, causing it to settle near the
floor and increase explosion risk.
7. The pressure relief valve on a cylinder should be pointed:
a) Away from ignition sources
b) Toward the wall
c) Downward
d) Toward the user
Rationale: Relief valves release gas under pressure, so they must face
away from heat or ignition points.
8. What must be used between the cylinder and torch to regulate
pressure?
a) Adapter
b) Shutoff valve
c) Pressure regulator
d) Flashback arrestor only
https://www.stuvia.com/user/MBOFFIN
