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Part One: Flammable & Combustible Liquids – Storage and
Handling
(20 Questions)
Q1: Your shop foreman asks you to store some new solvent containers in the back
room. He says the label shows a flash point of 85°F. Under NFPA 30 and NYC Fire
Code, how should this liquid be classified?
A. Combustible liquid, because its flash point is below 100°F
B. Flammable liquid, because its flash point is below 100°F
C. Flammable liquid, because its flash point is below 140°F
D. Combustible liquid, because its flash point is above 140°F
Correct Answer: B
Rationale: Under NFPA 30 and NYC Fire Code, a liquid with a flash point below
100°F is classified as flammable. A liquid with a flash point at or above 100°F but
below 200°F is combustible. The 85°F flash point puts this solvent squarely in the
flammable category, meaning it requires stricter storage and handling controls.
Option A reverses the classification logic. Option C incorrectly uses 140°F as the
cutoff (that's not the NFPA 30 standard for flammable vs. combustible). Option D is
wrong on both counts—85°F is not above 140°F, and the classification would be
flammable, not combustible.
Q2: You're doing a pre-shift walkthrough and notice a 5-gallon safety can of gasoline
sitting on the concrete floor of the storage room, right next to a stack of cardboard
boxes. The can is properly labeled and closed. What's the main problem here?
A. The safety can is too large; gasoline must be stored in 1-gallon containers only
B. Gasoline cannot be stored in safety cans; it requires an approved flammable
,liquids cabinet
C. The can is on the floor instead of being elevated at least 4 inches
D. The gasoline is stored too close to combustible materials like cardboard
Correct Answer: D
Rationale: The primary violation is proximity to combustibles. Flammable liquids
must be stored away from readily combustible materials such as paper, cardboard,
and wood to prevent fire spread. While safety cans are an approved container type,
placement matters just as much. Option A is wrong—safety cans commonly come in
5-gallon sizes and are approved for gasoline. Option B is incorrect because safety
cans are specifically designed for flammable liquids and are an approved storage
method. Option C describes a fire extinguisher mounting requirement, not a safety
can storage rule.
Q3: A mechanic on your crew asks why we always connect a bonding wire before
pumping solvent from a 55-gallon drum into a metal container. What's the best
explanation you can give him?
A. Bonding equalizes the electrical potential between the drum and container,
preventing static spark discharge that could ignite vapors
B. Bonding grounds the container to the earth, so any stray electricity flows safely
into the ground
C. Bonding is required by OSHA but not by FDNY, so it's mainly a workplace safety
formality
D. Bonding prevents the solvent from splashing out during transfer
Correct Answer: A
Rationale: Bonding connects two conductive objects (the drum and receiving
container) with a wire to equalize their electrical charge, preventing a static spark
jump between them during liquid transfer. Static electricity buildup is a major
ignition source for flammable vapors. Option B confuses bonding with grounding—
grounding connects to earth, bonding connects two objects together. Option C is
false; FDNY absolutely requires bonding during flammable liquid transfer. Option D is
nonsense; bonding has nothing to do with splash prevention.
, Q4: During an FDNY inspection, the inspector notes that your flammable liquids
storage cabinet has a missing self-closing latch on one door. He tells you this is a
violation. Why is the self-closing mechanism so important?
A. It prevents unauthorized personnel from accessing the cabinet
B. It ensures the cabinet doors close automatically if a fire breaks out, limiting oxygen
supply and containing vapors
C. It keeps the cabinet temperature below the flash point of stored liquids
D. It is only required for combustible liquids, not flammable liquids
Correct Answer: B
Rationale: Self-closing doors on flammable liquids cabinets are critical because they
automatically seal the cabinet during a fire, limiting oxygen to the fire and containing
flammable vapors. This is a core fire protection feature per NFPA 30 and NYC Fire
Code. Option A describes a security function, not the fire safety purpose. Option C is
incorrect—cabinets don't actively cool contents. Option D is backwards; self-closing
mechanisms are required for flammable liquids cabinets, and the requirements are
actually more stringent for flammables than combustibles.
Q5: Your supervisor wants to store 120 gallons of Class IB flammable liquid (flash
point below 73°F) inside your shop, which is a Group M occupancy with sprinkler
protection. What's the maximum quantity permitted per control area under NYC Fire
Code?
A. 30 gallons
B. 60 gallons
C. 120 gallons
D. 240 gallons
Correct Answer: C
Rationale: In a sprinkler-protected Group M occupancy, the maximum quantity of
Class IB flammable liquids permitted per control area is 120 gallons. Without
sprinklers, the limit drops to 60 gallons. The supervisor's proposed 120 gallons is