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43 Cards in this Set
- Front
- Back
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four methods of extinguishing fire
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cooling smothering starving and interupting combustion
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inside the skin of the ship, what type of hose do you use
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1 1/2 in rated at 95 gpms
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what are the 3 types of patterns in vari nozzles
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wide angle fog (low velocity)
narrow angle (high velocity) solid stream |
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what type of hose is used inside the hanger
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1 1/2 in hose rated at 125 and 180
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what type of hose is used outside the skin of the ship
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2 1/2 in rated at 250
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CO2 is primarily used for what and why
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C fires, non conductive, non corrosive, leaves no residue
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how does CO2 extinguish a fire
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displaces oxygen smothers the fire
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how does AFFF extinguish a fire
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it forms a vapor seal over the fire seperating the fuel and smothers it
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how does PKP put out a fire and what type of fire is it used for
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it chemically interupts the chain reaction, used for bravo fires
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what type of fire does APC put out and how
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bravo fires in the galley, and it smothers the fire with a frothy layer.
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what is the effective range of CO2 portable extinguisher
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4-6 ft
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how long does CO2 extinguishers last
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40-45 seconds
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18 lbs PKP range
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19 feet
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18 lbs PKP time
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10 seconds
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27 lbs PKP range
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21 feet
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27 lbs PKP time
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11 seconds
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AFFF 2 1/2 gallons
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15 ft declines with use
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AFF 2 1/2 gallons time
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55-65 seconds
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one portable afff bottle can effectively EXTINGUISH what
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20 square ft 4 1/2 x 4 1/2
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one portable afff bottle can effectively VAPOR SEAL what
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40 sq ft 4 6 x 6
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the impregnated material on the outer jacket of a hose is what color
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orange for easy identification
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why is the outer jacket of a hose impregnated
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to increase wear resistance
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what sizes of hose are available
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1 1/2 - 4 in 50 ft lengths
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what is the maximum operating pressure of a fire hose
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270 psi
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what is the optimum hose handling pressure
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90 -150 psi anything above 150 increases the chance of a wild hose
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what are the 2 sizes of non collapsible rubber hose
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3/4 in and 1 1/2 in, length varies on application and location
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what is a wye gate used for
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to reduce a 2 1/2 in line to 2 hoses with 1 1/2 in
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when one hose is connected, and why is the outlet with no hose left open
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a telltale for a leaking fireplug valve.
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what types of wood are plugs made out of
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soft wood, yellow pine
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other plugs are made out of blanket strips that can be rolled into what shape
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a cone
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what shapes do hook bolts come in
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T, J L
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what 3 factors determine whether to insert a plug from the inside or the outside of a ship
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access, flooding, and wreckage.
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what else can you use to plug holes
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Blankets, mattresses, pillows, and wood
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A wooden box patch can be prefabricated up to
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4 feet square and 1 foot deep
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what type of piping can a soft patch be applied to what psi piping
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low pressure piping (150 psi) or less
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on a soft patch, how many inches should you cut the wedge
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1/2
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on a soft patch, do you cut above or below the flush mark on the wedge and why
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below, so you don't block the pipe
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which patch can be used ona high pressure steam line
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none
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The first thing that needs to be done in a flooded compartment
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secure all power.
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The length of a wooden shore must not exceed
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30 times the minimum thickness.
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A strongback is used to
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distribute pressure or to serve as an anchor for a patch.
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The outer edge of the carpenter's square is a scale of
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1 inch equals 1 foot.
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what is A disadvantage when using steel shores
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tendency to produce sparks.
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