JAN 2017

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Restrictor Fognail, which provides an extremely wide cone angle and is effective against fires in void spaces. Experiment set-up These experiments were conducted in a 1½-story house with a small basement as shown in Fig- ure 2. The house was of ordinary construction (brick, wood-frame roof floor systems). Most of the rooms were lined with wood. The following instrumentation was used to gather objective data on the fire and effects of high-pressure/low-flow water application. • A set of five thermocouples placed in different measurement points in the fire compartment and the adjacent room • A clock measuring the time of the evolution • A video camera on a tripod (stationary picture) • A helmet camera (mobile recording) • A drone camera (aerial overview of the evolution) • A thermal imaging camera (TIC) with record- ing option Thermocouples were placed as illustrated in Figures 4 and 5. The stationary camera was placed to see two sides of the structure, including the window to the fire room, and two displays (elapsed time and temperatures). Another piercing lance (Mist-er Killer) was used as a precaution to extinguish any extension into the roof void. The experiments Evolutions were started 10 minutes after ignition, based on probable response time. First alarm would normally include two engines and, in some cases, an aerial ladder with a minimum of seven firefighters. Our scenario anticipated the follow- ing points: Figures 2 & 3: The experiments were conducted in a 1½-story house with a small basement (left). The burn room (right). Figure 4: Experiment setup and fire compartment thermocouple placement. Application of water from a fognail at ~290 psi (estimated pressure loss ~43.5 psi/30 feet of ¾-inch rubber reel hose) Attic – void spaces Ground floor Thermocouple measurement points Figure 5: Floor plan Smoke exhaust during Positive Pressure Ventilation T x – Placement of consecutive temperature measurement points (thermocouples) route of attack void spaces Securing of void roof space with, "Mist-er Killer" piercing lance January 2017 l Firehouse l 43

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