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Transcript

THE CELLAR NOZZLE

$1.25

Vol XCIII, No. 311

Monday, April 19, 2020

Hose Clamp: Set in position to clamp the hose 8 ft back from the hole, since no other way to control water flow in this application.

The Set-Up

Purpose

Tools/Additional Items/Placement

Cellar nozzle is a heavy duty appliance used primarily on large stubborn fires in areas that cannot safely be entered, but can be worked on from above.

  • Commercial buildings
  • Commercial basements
  • Mercantile or manufacturing buildings where streams cannot penetrate to the seat of the fire from the outside, and is deemed not safe to enter
  • Cellar nozzle (2 1/2 inch)
  • Cutting Tools (ax, rescue saw, circular saw, etc..)
  • Pike pole to probe for false ceilings and other obstruction after holes are made
  • 2 1/2 inch hose line
  • Hose Clamp
  • Gate Valve
  • Additional handline for protection of interior attack crews
  • Multiple holes cut, and for larger buildings every 30ft
  • Hose clamp placed 8ft back from the placement hole
  • Gate Valve placed in the hose line at the 1st coupling outside of the building
  • Gate valve is for emergency shut off/hose clamp used to control water flow when discontinuing or moving nozzle from one hole to another

By: Tremayne Baker

Key Points

Pump Pressure/How To Use

  • Pump pressure should be considered as a fog tip; 100lbs + Friction loss which is about 16lbs per 100ft of 2 1/2 inch hose line
  • Not to be/rarely used on the first attack line
  • Hose with cellar nozzle put through a hole and raised up and down to provide good coverage (howd straps or ropes can be used to effectively accomplish this)
  • The cellar nozzle is time-consuming and difficult, and the work to set it up must be done in the very worst conditions
  • Experienced, well trained firefighters are needed for this evolution. The area will need to be well lit and ventilated
  • Good supervision is a must and a sector safety officer should be assigned to keep an eye on the time, and on the building conditions to ensure firefighter safety and a timely exit if necessary
  • This evolution is efficient, and when able to reach can extinguish and fire within minutes
  • Subsequent/additional holes should be cut while the nozzle is being used in primary holes to widen coverage area
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