Page 1 of 99
FDNY G98 Handling, Use and Storage of Flammable
Compressed Gases Exam COMPLETE QUESTIONS AND
DETAILED SOLUTIONS LATEST UPDATE THIS YEAR-JUST
RELEASED
Summarized Exam Coverage (Condensed Study Notes)
FDNY G-98 focuses on safe storage, handling, and use of flammable compressed gas cylinders. Key
knowledge includes recognizing cylinder labels/markings, storing cylinders upright and secured, keeping
protective caps on when not in use, separating flammable gases from oxidizers and ignition sources,
ensuring ventilation, using proper regulators and leak-testing connections, following permit and signage
requirements, understanding emergency procedures for leaks/fire, maintaining fire extinguishers, and
ensuring safe transport using approved cylinder carts.
1.
A worker stores a propane cylinder lying sideways behind a door in a mechanical room. What is the main
safety violation?
A. Cylinder is not painted red
B. Cylinder is stored horizontally and unsecured in an unsuitable location
C. Cylinder is not stored with a pressure gauge installed
D. Cylinder must be stored only in a basement
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Answer: B
Rationale: Flammable gas cylinders must be stored upright, secured, and in approved areas away from
impacts and obstructions.
2.
During a routine check, you smell gas near a cylinder connection but see no visible damage. What is the
safest immediate action?
A. Tighten the fitting quickly with a wrench while gas is leaking
B. Use a flame to locate the leak source faster
C. Stop gas flow if safe, ventilate, and notify the supervisor immediately
D. Ignore it since odor is common around cylinders
Answer: C
Rationale: Leak response requires stopping flow if safe, increasing ventilation, and reporting; ignition
sources must be avoided.
3.
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A cylinder is being transported in a building elevator with passengers. What is the correct safe
procedure?
A. Transport cylinder with passengers if it is under 20 pounds
B. Transport only during business hours
C. Transport in a freight elevator whenever possible without passengers
D. Transport with valve open to reduce internal pressure
Answer: C
Rationale: Flammable compressed gas cylinders should be transported safely, typically using freight
elevators and limiting passenger exposure.
4.
A COF holder sees a cylinder without a label, but the valve outlet looks like a flammable gas type. What
should be done first?
A. Use the cylinder carefully and assume it is propane
B. Immediately remove it from service until properly identified
C. Paint the cylinder a standard color for flammable gas
D. Connect it to equipment and test the flame color
, Page 4 of 99
Answer: B
Rationale: Unlabeled cylinders must never be used because contents cannot be confirmed, creating
serious hazard and code violations.
5.
A restaurant kitchen stores propane cylinders next to a deep fryer because space is limited. What is the
most serious risk?
A. Fryer grease will cool the cylinder too much
B. Heat and open flames can ignite leaking gas and cause explosion
C. Propane cylinders will corrode faster near cooking equipment
D. The cylinder will become heavier due to heat exposure
Answer: B
Rationale: Flammable gas cylinders must be separated from heat and ignition sources because leaks can
ignite immediately.
6.
FDNY G98 Handling, Use and Storage of Flammable
Compressed Gases Exam COMPLETE QUESTIONS AND
DETAILED SOLUTIONS LATEST UPDATE THIS YEAR-JUST
RELEASED
Summarized Exam Coverage (Condensed Study Notes)
FDNY G-98 focuses on safe storage, handling, and use of flammable compressed gas cylinders. Key
knowledge includes recognizing cylinder labels/markings, storing cylinders upright and secured, keeping
protective caps on when not in use, separating flammable gases from oxidizers and ignition sources,
ensuring ventilation, using proper regulators and leak-testing connections, following permit and signage
requirements, understanding emergency procedures for leaks/fire, maintaining fire extinguishers, and
ensuring safe transport using approved cylinder carts.
1.
A worker stores a propane cylinder lying sideways behind a door in a mechanical room. What is the main
safety violation?
A. Cylinder is not painted red
B. Cylinder is stored horizontally and unsecured in an unsuitable location
C. Cylinder is not stored with a pressure gauge installed
D. Cylinder must be stored only in a basement
, Page 2 of 99
Answer: B
Rationale: Flammable gas cylinders must be stored upright, secured, and in approved areas away from
impacts and obstructions.
2.
During a routine check, you smell gas near a cylinder connection but see no visible damage. What is the
safest immediate action?
A. Tighten the fitting quickly with a wrench while gas is leaking
B. Use a flame to locate the leak source faster
C. Stop gas flow if safe, ventilate, and notify the supervisor immediately
D. Ignore it since odor is common around cylinders
Answer: C
Rationale: Leak response requires stopping flow if safe, increasing ventilation, and reporting; ignition
sources must be avoided.
3.
, Page 3 of 99
A cylinder is being transported in a building elevator with passengers. What is the correct safe
procedure?
A. Transport cylinder with passengers if it is under 20 pounds
B. Transport only during business hours
C. Transport in a freight elevator whenever possible without passengers
D. Transport with valve open to reduce internal pressure
Answer: C
Rationale: Flammable compressed gas cylinders should be transported safely, typically using freight
elevators and limiting passenger exposure.
4.
A COF holder sees a cylinder without a label, but the valve outlet looks like a flammable gas type. What
should be done first?
A. Use the cylinder carefully and assume it is propane
B. Immediately remove it from service until properly identified
C. Paint the cylinder a standard color for flammable gas
D. Connect it to equipment and test the flame color
, Page 4 of 99
Answer: B
Rationale: Unlabeled cylinders must never be used because contents cannot be confirmed, creating
serious hazard and code violations.
5.
A restaurant kitchen stores propane cylinders next to a deep fryer because space is limited. What is the
most serious risk?
A. Fryer grease will cool the cylinder too much
B. Heat and open flames can ignite leaking gas and cause explosion
C. Propane cylinders will corrode faster near cooking equipment
D. The cylinder will become heavier due to heat exposure
Answer: B
Rationale: Flammable gas cylinders must be separated from heat and ignition sources because leaks can
ignite immediately.
6.
