Fire Stream Design, Development and Application Methodology

#fdic2024
This class will cover discussions points on handlines, single inlet mini monitor fire streams, and master stream development/application, with these three key areas brought into sharper focus, volume, placement, and velocity.
Critical knowledge/understanding points will be addressed, in handline attack package design from small to large. This will include the selection and implications of these key points: target flows handline to master stream, nozzle pressures, reaction force, backpressure, hose construction/design, pump plumbing/psi pickups, panel gauge design,
Ending with a discussion around properly applying suppression water from exterior positions vs. interior positions, on plane vs. off a plane, wind impacts, and hidden fire.
The attendee will get a rapid and clear understanding of these three critical areas of fire stream development: Volume, Placement and Velocity. In addition to how these factors impact functional suppression. Often placement of water can trump GPM for example. In addition, why it is important to have tactically redundant flows in place, and once a fire passes the moderate size compartment volume, safety (arresting rapid fire development) cannot be assured via stream volume alone during interior operations.
Volume will be broken down into Handline (Small and Large) small to moderate size compartments and Heavy Streams (Single Inlet, Engine & Aerial Mounted) large compartment to floor/building of origin to block of origin flows.
Placement will be discussed in terms of Nozzle Reach vs Stream Reach in Handlines bounded by mobility and required members per handline size. In Heavy Streams, Single Inlet Monitors vs Deck Guns vs Aerial Device (Ladder pipe, Bed Pipe, Pre-Plumb Ladder vs Platform) will be discussed, plus best ways to increase stream scrub safely (outside of collapse zones)
Velocity of the fire stream (AKA Nozzle Pressure) will be focused on why handlines should be in the 77 to 94 feet per second range (FPS) and Heavy stream where mechanical assistance is provide can be variable, with Single Inlet Monitors from 108-120 FPS, Deck Gun’s 85 to 120 FPS and Aerial Mounted 108 to 149 FPS
This class will be offered Friday morning at FDIC 2024
Lead Instructor: Dennis LeGear, Retired Capt. Oakland CA

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