Page 1 of 90
FDNY G46 Storage, Handling, Use and Refilling of Non-
Flammable Gas Cylinders EXAM ACTUAL EXAM COMPLETE
QUESTIONS AND DETAILED SOLUTIONS LATEST UPDATE THIS
YEAR-JUST RELEASED
SUMMARIZED EXAM COVERAGE
The G-46 exam tests:
• Safe storage and securing of cylinders
• Proper handling and transport practices
• Correct use of regulators and valves
• Understanding hazards (pressure, oxygen, asphyxiation)
• Emergency response procedures
• Compliance with FDNY regulations and permits
1.
A worker stores compressed gas cylinders horizontally on the floor without securing them; what is the
primary safety risk?
A. Reduced pressure
B. Cylinder rolling and potential valve damage
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C. Increased gas purity
D. Improved ventilation
Answer: B
Rationale: Cylinders must be upright and secured to prevent rolling and valve breakage.
2.
Which method is most appropriate for detecting leaks in a non-flammable gas cylinder connection?
A. Using a flame
B. Listening only
C. Applying soap solution
D. Smelling the gas
Answer: C
Rationale: Soap solution safely reveals leaks through bubble formation.
3.
Why must valve protection caps be installed on cylinders during transport?
A. Improve appearance
B. Prevent valve damage if dropped
C. Increase gas pressure
D. Reduce weight
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Answer: B
Rationale: Caps protect valves from impact damage.
4.
A cylinder containing nitrogen leaks in a confined space; what is the primary hazard?
A. Fire risk
B. Explosion
C. Oxygen displacement causing asphyxiation
D. Chemical burns
Answer: C
Rationale: Nitrogen displaces oxygen, leading to suffocation risk.
5.
Which temperature condition is unsafe for storing compressed gas cylinders?
A. Below freezing
B. Above 125°F (52°C)
C. Room temperature
D. Cool dry area
Answer: B
Rationale: High temperatures increase internal pressure and risk rupture.
6.
, Page 4 of 90
A worker attempts to move a compressed gas cylinder by rolling it on its side; what is the correct safe
practice?
A. Roll slowly across floor
B. Drag cylinder carefully
C. Use an approved cylinder cart
D. Carry with two people
Answer: C
Rationale: Cylinders must be transported using proper carts to prevent damage and injury.
7.
Which type of gas presents the greatest risk of creating an oxygen-enriched atmosphere, increasing fire
hazards?
A. Nitrogen
B. Carbon dioxide
C. Oxygen
D. Helium
Answer: C
Rationale: Oxygen supports combustion and increases fire intensity.
8.
FDNY G46 Storage, Handling, Use and Refilling of Non-
Flammable Gas Cylinders EXAM ACTUAL EXAM COMPLETE
QUESTIONS AND DETAILED SOLUTIONS LATEST UPDATE THIS
YEAR-JUST RELEASED
SUMMARIZED EXAM COVERAGE
The G-46 exam tests:
• Safe storage and securing of cylinders
• Proper handling and transport practices
• Correct use of regulators and valves
• Understanding hazards (pressure, oxygen, asphyxiation)
• Emergency response procedures
• Compliance with FDNY regulations and permits
1.
A worker stores compressed gas cylinders horizontally on the floor without securing them; what is the
primary safety risk?
A. Reduced pressure
B. Cylinder rolling and potential valve damage
, Page 2 of 90
C. Increased gas purity
D. Improved ventilation
Answer: B
Rationale: Cylinders must be upright and secured to prevent rolling and valve breakage.
2.
Which method is most appropriate for detecting leaks in a non-flammable gas cylinder connection?
A. Using a flame
B. Listening only
C. Applying soap solution
D. Smelling the gas
Answer: C
Rationale: Soap solution safely reveals leaks through bubble formation.
3.
Why must valve protection caps be installed on cylinders during transport?
A. Improve appearance
B. Prevent valve damage if dropped
C. Increase gas pressure
D. Reduce weight
, Page 3 of 90
Answer: B
Rationale: Caps protect valves from impact damage.
4.
A cylinder containing nitrogen leaks in a confined space; what is the primary hazard?
A. Fire risk
B. Explosion
C. Oxygen displacement causing asphyxiation
D. Chemical burns
Answer: C
Rationale: Nitrogen displaces oxygen, leading to suffocation risk.
5.
Which temperature condition is unsafe for storing compressed gas cylinders?
A. Below freezing
B. Above 125°F (52°C)
C. Room temperature
D. Cool dry area
Answer: B
Rationale: High temperatures increase internal pressure and risk rupture.
6.
, Page 4 of 90
A worker attempts to move a compressed gas cylinder by rolling it on its side; what is the correct safe
practice?
A. Roll slowly across floor
B. Drag cylinder carefully
C. Use an approved cylinder cart
D. Carry with two people
Answer: C
Rationale: Cylinders must be transported using proper carts to prevent damage and injury.
7.
Which type of gas presents the greatest risk of creating an oxygen-enriched atmosphere, increasing fire
hazards?
A. Nitrogen
B. Carbon dioxide
C. Oxygen
D. Helium
Answer: C
Rationale: Oxygen supports combustion and increases fire intensity.
8.
