QUESTIONS AND ANSWERS GUARANTEE A+
✔✔Navy All-Purpose Nozzle - ✔✔-solid steam, high velocity fog, low velocity fog when
used with applicator
✔✔Vari Nozzle - ✔✔-Bale turns it on and off
-twist nozzle to vary the pattern, twist to the right for a straight stream and to the left for
a wide low velocity fog pattern
✔✔Fog Applicators - ✔✔-both high and low velocity extinguish fire by absorbing heat
-can possibly help by reducing, but not eliminating the supply of oxygen
-are used with the all purpose nozzle
- there are three types: 60 deg 4 ft, 90 deg 10 ft, 90 deg 12 ft
✔✔What is the difference between high velocity and low velocity? - ✔✔high- narrow
pattern used to put out fires
low- wide pattern used as a heat shield
✔✔What is a hose thread? - ✔✔-the threading on fire hoses is a particular type unique
to fire hoses
-male end is the end that has the thread
-female end is the end that has the thread on the inside
✔✔In Fire Fighting what 4 aspects do you need to keep in mind? - ✔✔-time is critical
(fight the fire in the incipient stage)
-awareness (know location/type of fire fighting equipment and know how to use it)
-pick the right tool for the job
-stay low (cooler air, better visibility)
✔✔What is the immediate action you take when you discover a fire? - ✔✔-sound the
alarm
-report location (of fire and what is burning)
-warn or rescue endangered crew members
-restrict the spread of fire by closing ports, hatches, and shutting down ventilation
ONLY attempt to extinguish if:
-fire is small and in incipient stage
-extinguished is proper size and type
-escape route is clear
-smoke and toxic gas buildup is minimal
you are confident that the fire can safely be put out
✔✔What is the Fire and Emergency Signal? - ✔✔A continuous sounding of the ship's
whistle and general alarm for a period of no less than 10 seconds
, ✔✔What are four human causes of fires? - ✔✔-careless action
-irresponsible actions
-ill-advised actions
-ommissions
✔✔What are the #1 causes of the start of fires? - ✔✔-careless smoking habits
(disposal, smoking in bed, disregard for restricted areas)
-poor housekeeping (dirty/oily machinery, cloths drier lint accumulation, improper, non-
secured storage)
✔✔What are causes of electrical circuit fires? - ✔✔-worn insulation
-overloading
-poor wiring
-wrong sized fuses
-wrong equipment for circuits
-substandard equipment and parts
-jury rigging
-exposed circuits
-water drips
-improper maintenance
✔✔What are some causes of galley fires? - ✔✔-open flames
-hot surfaces
-hot oil
-much activity
-rubbish
-grease
-energy sources
✔✔ What are the conditions needed for a fire to occur? - ✔✔fuel (material that acts as a
fuel)
sources of ignition (chemical, biological, or physical)
oxygen
✔✔What are the components of the fire tetrahedron? - ✔✔heat, fuel, oxygen, chain
reaction
✔✔How do you stop a fire? - ✔✔Remove any of the components of the fire tetrahedron
(i.e. remove fuel, oxygen, heat, or interrupt the chemical reaction)
✔✔Oxygen - ✔✔-21% ambient air
-robust flaming combustion down to 15-16%
-surface combustion (smoldering) down to about 11%
-loss of consciousness in atmospheres with 12% or less oxygen