Water Mapping of a Smooth Bore Fire Stream (Episode #45)

Stream movement and stream angle have a major impact on fire attack and getting water to the seat of the fire. Angling the stream at the ceiling will cool fire gases, but then it will typically follow the ceiling until it hits the back wall. In this episode Ray McCormack discusses water mapping using smooth bore nozzle stream and how the water will travel through the room based on your technique.
For more information: www.brasstackshardfacts.com/

[@phillipa224]

Awesome. Thanks.

[@cornbread144]

Never saw anybody else with the same last name, Great video

[@boopiedistura]

Great

[@JB91710]

That's great if the only thing burning in a room, is the ceiling. How often does that happen? If you want the room contents to stop burning, you have to get the contents wet. That's where an adjustable nozzle comes in. Along with thinking about where the fire is so you know where to apply the water, will get the job down. The key is to THINK and use the least amount of water to quickly and safely extinguish the fire. This is how you do that with an adjustable nozzle or fog tip, not with a smooth bore. czcams.com/video/iBQpVhrS_4o/video.html

[@JB91710]

@danspeight7448 Oh boy! You sure changed my mind with that long and detailed explanation. Why don't you say it like you mean it? "You're wrong! You stop it or I'll tell my Mommy!"

[@JB91710]

A smooth bore nozzle puts hardly any water on anything. With an adjustable cone or fog nozzle, you can adjust the cone to cover as much material as possible while overpowering the energy of the fire or wind. If you find the fire room during a 360, you vent the windows, the pressure escapes out those windows, water goes inside to soak the burning material and the gasses including steam continue out those same windows. That can be accomplished using Tank Water long before the firefighters can get fully dressed, assemble and entry team and get the door open. To not do this and fight the fire from inside defies logic and common sense. When fighting it from inside, the heat and steam have no where to go but over your head no matter what stream you use.

[@jbrady1009]

I really truly hope you’re trolling

[@JB91710]

@@jbrady1009 Are you serious? Did you not understand what I said? If you didn't understand, read what Andy said below.

[@jbrady1009]

No you lost me at the “smooth bore hardly puts water on anything” that screamed that either this dude is trolling really really hard or we have some really incompetent people in the fire service.

[@JB91710]

@@jbrady1009 We have Amazingly incompetent people in the American fire service. You can see it in every video. No, not some of them but all of them. Just ask yourself, "Why is it taking so long to get water on the Visible Burning Material to stop the threat?" I'll tell you what. Post a link to any fire video where you think they did a great job and look for my comments there. If I didn't see it I will evaluate their performance for you. It really isn't hard to do it's just that no one does it. They just worship them for Joining Up, Dressing Up and Showing Up. Everybody needs their heroes!
Oh and as far as a smooth bore stream, all the water falls on a small area and the flames persist. Open the cone on an adjustable nozzle just a little and you cover much more area and eliminate the flames much faster. This is Not Brain Surgery.

[@andyoxleyonhistravels]

@@jbrady1009 We use high pressure hosereels on a half fan if hitting the fire from outside through a window. If when entering we use a wide cone to start with.
Why ?
Surface area. The fine mist creates a greater surface area than a solid stream thus cooling the flammable gases in the ceiling which reduces the temperature and reduces the chance of a flashover.
If you use a solid stream much of the water just falls to the floor and has little or no effect and if you use a solid continous stream it just creates far too much steam which makes it difficult for crews to remain in the fire compartment. When we enter a fire compartment we can sit at the doorway and direct some short wide fan pulses directly in to the ceiling to cool flammable gases above our head then we narrow down the cone and start to aim lower and towards the rear of the compartment with short pulses which just knocks the fire back until you hit the seat of the fire. You do not need to have a solid open stream on a jet and just drown the floor its pointless.