CAPTAIN'S LICENSE ALL FIRE QUESTIONS Flashcards
Removing which will extinguish a fire?
A) Nitrogen
B) Carbon Dioxide
C) Sodium
D) Oxygen
D
All of the following are part of the fire triangle EXCEPT:
A) Electricity
B) Oxygen
C) Fuel
D) Heat
A
Fire may be spread by which means?
A) Conduction of heat to adjacent surfaces
B) Direct radiation
C) Convection
D) All of the above
D
To prevent the spread of fire by conduction, you should
A) Shut of all electrical power
B) Close all openings to the area
C) Remove combustibles from direct exposure
D) Cool the bulkheads around the fire
D
Convection spreads a fire by
A) The transfer of heat across an unobstructed space
B) Burning liquid flowing into another space
C) transmitting the heat of a fire through the ship’s metal
D) heated gases flowing through ventilation systems
D
Ventilation systems connected to a compartment in which
a fire is burning are normally close to prevent the rapid spread of the fire by
A) Convection
B) Conduction
C) Radiation
D) Spontaneous Combustion
A
The spread of fire is prevented by
A) cooling surfaces adjacent to the fire
B) leaving combustibles in the endangered area
C) increasing the oxygen supply
D) all of the above
A
Fires are grouped into what categories?
A) Class A, B, C, and D
B) Type 1, 2, 3, and 4
C) combustible solids, liquids, and gases
D) flammable solids, liquids, and gases
A
A fire in a pile of linen is a class
A) A
B) B
C) C
D) D
A
The class of fire on which a blanketing effect is essential is class
A) A
B) B
C) C
D) D
B
A galley grease fire would be classified as which class of fire?
A) A
B) B
C) C
D) D
B
What is the primary hazard, other than fire damage, associated with a Class C fire?
A) possibility of reflash
B) electrocution or shock
C) explosion
D) flashover
B
A fire started by spontaneous combustion can be expected in which conditions?
A) paints, varnish, or other liquid flammables are stowed in a dry stores locker
B) inert cargoes such as pig iron are loaded in a wet condition
C) Oily rags are stowed in a metal pail
D) clean mattresses are stored in contact with an electric light bulb
C
Spontaneous combustion is caused by
A) an outside heat source heating a substance until it ignites
B) conduction of heat through a wall of material to the substance
C) chemical action within a substance
D) All of the above
C
Which extinguishing agent will absorb the most heat?
A) CO2
B) Foam
C) Water
D) Dry Chemical
C
The most effective cooling agent among those normally used to fight fires is
A) water fog or spray
B) chemical foam
C) mechanical foam
D) carbon dioxide
A
What is an advantage of water fog or water spray over a straight stream of water in fighting an oil fire?
A) it has a smothering effect on the fire
B) it requires less water to remove the same amount of heat
C) it gives more protection to the fire fighting personnel
D) all of the above
D
Foam extinguishes a fire mainly by
A) cooling
B) chemical action
C) smothering
D) inserting the air
C
How does foam extinguish an oil fire?
A) by cooling the oil below the ignition temperature
B) by removing the fuel source from the fire
C) by excluding the oxygen from the fire
D) by increasing the weight of the oil
C
One of the limitations of foam as an extinguishing agent is that foam
A) cannot be made with salt water
B) is heavier than oil and sinks below its surface
C) is corrosive and a hazard to fire fighters
D) conducts electricity
D
What is the most vulnerable part of the fire main system?
A) the fire pump
B) exposed hard piping
C) the hydrant valve
D) the fire hose
D
The size of fire hydrant hose connections on a cargo vessel must be either 1- 1/2 inches or
A) 1 inch
B) 2-1/2 inches
C) 3 inches
D) 3-1/2 inches
B
A fire hose with a nozzle attached must be connected to each hydrant except when exposed to heavy weather or when the
A) fire hose might be damaged by cargo operations
B) vessel is in port
C) fire-main system is not charged
D) fire pumps are used for purposes other than supplying water to the fire main
A
Fire hose couplings
A) are made of bronze, brass, or soft alloy metals
B) should be painted red in order to identify hose lengths
C) are specially hardened to prevent crushing
D) should be greased frequently
A
The straight stream capability of an all-purpose nozzle is used in fighting a class A fire to
A) shield fire fighters from radiant heat
B) break up the burning material
C) get the most water possible on the fire
D) drive smoke and heat ahead of the fire fighters
B
Which statement is true concerning carbon dioxide?
A) it is heavier than wire
B) it is non-conductive
C) it is used on Class B and C fires
D) all of the above are true
D
Before using a fixed CO2 system to fight an engine room fire, you must
A) secure the engine room ventilation
B) secure the machinery in the engine room
C) evacuate all engine room personnel
D) all of the above
D
The disadvantage of using CO2 is that the
A) CO2 does not cool the fire
B) cylinders are regulated pressure vessels
C) CO2 is not effective on Class B fires
D) CO2 is not effective on Class C fires
A
Fixed CO2 systems would not be used on crew’s quarter’s or
A) the paint locker
B) spaces open to the atmosphere
C) cargo holds
D) the engine room
B
All portable fire extinguishers must be capable of being
A) carried by hand to a fire
B) carried or rolled to a fire
C) recharged in the field
D) used on Class B fires
A
What is the most important characteristic of the extinguishing agent in fighting a Class C fire?
A) weight
B) temperature
C) electrical non-conductivity
D) cost
C
Dry chemical extinguishers may be used on what class of fires?
A) A only
B) B only
C) B and C only
D) A, B, or C as marked on the extinguisher
D
Which action is routinely performed at the annual servicing and inspection of a dry chemical cartridge-operated portable fire extinguisher?
A) test the pressure gauge for correct reading
B) weigh the cartridge
C) replace the dry chemical
D) pressure test the discharge hose
B
Which extinguishing agent is most likely to allow reflash as a result of not cooling the fuel below its ignition temperature?
A) CO2
B) water stream
C) water spray
D) foam
A
How do you operate a portable CO2 fire extinguisher?
A) point the horn down
B) turn cylinder upside-down
C) break the rupture disc
D) pull pin, squeeze grip
D
You can determine that a CO2 fire extinguisher is fully charged by
A) looking at the gauge
B) checking the nameplate data
C) weighing by hand
D) weighing on a properly calibrated scale
D
What should be your FIRST action if you discover a fire aboard ship?
A) sound the alarm
B) attempt to put out the fire
C) confine it by closing doors, ports, vents, etc.
D) call the Master
A
When attempting to enter a compartment containing a fire, which method of applying water is best?
A) high-velocity fog stream directed toward the overhead
B) straight stream directed into the center of the fire
C) sweeping the compartment with a fog stream
D) solid stream directed toward the overhead
C
A fuel line breaks, sprays fuel on the hot manifold, and catches fire. Your FIRST action should be
A) batten down the engine room
B) start the fire pump
C) apply carbon dioxide to the fire
D) shut off the fuel supply
D
When fighting an oil or gasoline fire in the bilge, which of the following should NOT be used?
A) Foam
B) solid-stream water nozzle
C) all-purpose nozzle
D) carbon dioxide
B
