©Copyright Task Force Tips LLC 2018 - 2020
LIS-045 May 5, 2019 Rev02
13
8.0 USE OF NOZZLES
IT IS THE RESPONSIBILITY OF THE INDIVIDUAL FIRE DEPARTMENT OR AGENCY TO DETERMINE PHYSICAL CAPABILITIES
AND SUITABILITY FOR AN INDIVIDUAL’S USE OF THIS EQUIPMENT.
Many factors contribute to the extinguishment of a
fi
re. Among the most important is delivering water at a
fl
ow rate su
ffi
cient to absorb
heat faster than it is being generated. The
fl
ow rate depends largely on the pump discharge pressure and hose friction loss. It can be
calculated using a hydraulic equation such as:
PDP = NP + FL + DL + EL
PDP =
Pump discharge pressure in PSI
NP =
Nozzle pressure in PSI
FL =
Hose friction loss in PSI
DL =
Device loss in PSI
EL =
Elevation loss in PSI
This Safety Manual is not intended as a substitute for proper
training in the use of rescue systems as taught from credible
sources such as the National Fire Protection Association (NFPA),
the International Fire Service Training Association (IFSTA), or
sources approved by the Authority Having Jurisdiction (AHJ).
7.0 USE WITH FOAM
The nozzle may be used with foam solutions. Refer to
fi
re service training for the proper use of foam.
WARNING
For Class B
fi
res, lack of foam or interruption in the foam stream can cause a break in the foam
blanket and greatly increase the risk of injury or death. Follow procedures established by the AHJ
for the speci
fi
c fuel and conditions.
WARNING
Improper use of foam or using the wrong type of foam can result in illness, injury, or damage to
the environment. Follow foam manufacturer’s instructions and
fi
re service training as directed by
the AHJ.
