Attack Line Handling

Firefighter Review Session Reference: 3 Topic: Attack Line Handling Level of Instruction: Time Required: Three Hours Materials:    • Two Fully Equipped Pumpers    • Structure for Use in Advancing Hose...

      c. 1-1/2-inch, 1-3/4-inch, and 2-inch attack lines should not exceed 300 feet in length

      d. 2-1/2-inch attack lines should not exceed 500 feet

      e. When lengths of attack line beyond those recommended are required, consideration should be

          given to using 3-inch, 4-inch, or 5-inch hose to get water closer to the fire scene and dividing the

          flow into more manageable size attack lines using wyes or manifolds

B. Initial Attack

  1. Indirect attack - fog stream used to attack fire from outside building

      a. Should not be used to fight fire in occupied building

      b. Quick interior attack should not be made in building undergoing demolition, abandoned, had

          previous fires or under construction

      c. If large intense fire encountered, may be necessary to knock down or control fire from outside

         using solid stream before making interior attack

  2. Solid streams versus fog streams

      a. For safest and most effective operation where people in area, solid stream or fog nozzle on solid

          stream position should be used

          1) Aid rescue

          2) Reduce steam production

      b. Use of fog should be restricted to unoccupied confined spaces

      c. When building adequately ventilated opposite direction from fog nozzle, fog stream can be used

           1) No more than 30-degree angle

           2) Produces reach and fog pattern

  3. Effective stream operation

      a. Use solid stream nozzles or set fog nozzles on solid stream setting

      b. Stay low upon entering fire area to let heat and gases vent before moving in

      c. Before door to fire area opened, all firefighters should be positioned on same side of entrance

         and remain low

      d. Crack nozzle and bleed air out of line ahead of water

      e. If fire shows at top of door as opened, ceiling should be hit with solid stream to cool and control

         fire gases

      f. Sweep floor with stream to cool burning debris and hot surfaces

      g. Do not open stream until fire can be hit unless firefighter safety involved

      h. Direct stream at base of fire if localized

      i. As advance made, angle of stream should be lowered and attempt made to hit main body of fire

      j. When main body of fire knocked down, shut down stream and let area to vent

      k. When fire knocked down, shut down

      l. Upon entering area which is very hot and finding no fire, withdraw immediately and check area


     m. When attacking basement fire down interior stairs, solid stream should be used because fog will

           generate steam

  4. Number of lines

     a. Attack main body of fire

     b. Get over fire

     c. On each side of fire

     d. Consideration must be given to mobility of hose and flow requirements

C. Back-Up Lines

  1. Purpose of back-up lines

      a. Used when initial attack lines cannot quickly control fire

      b. Not used to protect exposures or attack fire

      c. Held in readiness for use in place of attack lines

      d. May also be used for back-up or safety team

  2. Stretched whenever not completely obvious that fire quickly extinguished with initial attack lines

      a. Taken into building immediately after initial attack lines

      b. Positioned close to initial attack lines

      c. Charged and ready for use

  3. Size of back-up lines

      a. For 1-1/2-inch lines, minimum 1-3/4-inch

      b. For 1-3/4-inch lines, minimum 2-1/2-inch

      c. For 2-1/2-inch lines, minimum 2-1/2-inch with larger tip

      d. For fire where initial attack is 2-1/2-inch line, master stream devices may be required

  4. If back-up lines placed in service, initial attack lines should be shut down

  5. Once fire controlled, back-up lines shut down and smaller line used for mop up

  6. On any working fire, a back-up or safety team should be standing by with charged line and ready