FDNY S-18: CERTIFICATE OF FITNESS
FOR SUPERVISION OF BULK LIQUID
TERMINALS. QUESTIONS AND
VERIFIED ANSWERS JUST RELEASED
1. Which of the following describes the primary responsibility of an S-18 Certificate of Fitness
holder at a bulk liquid terminal?
A. To personally conduct all repairs on pumping equipment.
B. To supervise the safe storage, handling, and transfer of flammable and combustible
liquids.
C. To manage the financial auditing of liquid inventory.
D. To design the fire suppression systems for new terminal expansions.
Answer: B
Conceptual Explanation: The S-18 C of F holder is responsible for the overall supervision
of terminal operations involving flammable or combustible liquids to ensure safety and
compliance with the Fire Code.
2. What is the maximum capacity for a container to be considered a ‘portable tank’ under the
New York City Fire Code?
A. 60 gallons
,B. 660 gallons
C. 120 gallons
D. 1,000 gallons
Answer: B
Conceptual Explanation: A portable tank is defined as a vessel having a liquid capacity of
more than 60 gallons but not more than 660 gallons, designed for transportation.
3. Which type of storage tank is equipped with a roof that rests on the liquid surface and
rises/falls with the liquid level?
A. Cone-roof tank
B. Floating-roof tank
C. Pressure vessel
D. Horizontal underground tank
Answer: B
Conceptual Explanation: Floating-roof tanks reduce vapor space by having the roof rest
directly on the liquid, which minimizes evaporative losses and fire hazards.
4. What is the minimum flash point for a liquid to be classified as a ‘Combustible Liquid’ Class
II?
A. 73°F
B. 140°F
, C. 100°F
D. 200°F
Answer: C
Conceptual Explanation: Class II combustible liquids have a flash point at or above 100°F
and below 140°F.
5. At a bulk terminal, ‘bonding’ is used to prevent the buildup of static electricity. How is it
achieved?
A. By connecting a tank to the earth’s crust.
B. By insulating all pipes with rubber sleeves.
C. By providing a conductive path between two objects.
D. By reducing the flow velocity of the liquid.
Answer: C
Conceptual Explanation: Bonding is the process of connecting two conductive objects
together with a wire to equalize the potential and prevent sparks.
6. What must be done immediately if a leak is detected in a primary storage tank?
A. Wait for the next scheduled inspection to report it.
B. Increase the pressure in the tank to seal the leak.
C. Transfer the contents to another tank or approved container.
FOR SUPERVISION OF BULK LIQUID
TERMINALS. QUESTIONS AND
VERIFIED ANSWERS JUST RELEASED
1. Which of the following describes the primary responsibility of an S-18 Certificate of Fitness
holder at a bulk liquid terminal?
A. To personally conduct all repairs on pumping equipment.
B. To supervise the safe storage, handling, and transfer of flammable and combustible
liquids.
C. To manage the financial auditing of liquid inventory.
D. To design the fire suppression systems for new terminal expansions.
Answer: B
Conceptual Explanation: The S-18 C of F holder is responsible for the overall supervision
of terminal operations involving flammable or combustible liquids to ensure safety and
compliance with the Fire Code.
2. What is the maximum capacity for a container to be considered a ‘portable tank’ under the
New York City Fire Code?
A. 60 gallons
,B. 660 gallons
C. 120 gallons
D. 1,000 gallons
Answer: B
Conceptual Explanation: A portable tank is defined as a vessel having a liquid capacity of
more than 60 gallons but not more than 660 gallons, designed for transportation.
3. Which type of storage tank is equipped with a roof that rests on the liquid surface and
rises/falls with the liquid level?
A. Cone-roof tank
B. Floating-roof tank
C. Pressure vessel
D. Horizontal underground tank
Answer: B
Conceptual Explanation: Floating-roof tanks reduce vapor space by having the roof rest
directly on the liquid, which minimizes evaporative losses and fire hazards.
4. What is the minimum flash point for a liquid to be classified as a ‘Combustible Liquid’ Class
II?
A. 73°F
B. 140°F
, C. 100°F
D. 200°F
Answer: C
Conceptual Explanation: Class II combustible liquids have a flash point at or above 100°F
and below 140°F.
5. At a bulk terminal, ‘bonding’ is used to prevent the buildup of static electricity. How is it
achieved?
A. By connecting a tank to the earth’s crust.
B. By insulating all pipes with rubber sleeves.
C. By providing a conductive path between two objects.
D. By reducing the flow velocity of the liquid.
Answer: C
Conceptual Explanation: Bonding is the process of connecting two conductive objects
together with a wire to equalize the potential and prevent sparks.
6. What must be done immediately if a leak is detected in a primary storage tank?
A. Wait for the next scheduled inspection to report it.
B. Increase the pressure in the tank to seal the leak.
C. Transfer the contents to another tank or approved container.
