Una delle migliori spiegazioni dell'attacco di transizione che io abbia mai sentito. Esaustivo, interessante, conciso, rappresentativo. Davvero fantastico aspetto altri video in inglese!
Very very good arguments and demonstrations. I am very thankful for your time and effort. I am, however, now😊 questioning everything I know and have done lol 😆 😅
I enjoyed this video, it was well produced and easy to follow. I will share it with my crew and other company officers and create some discussions. Thank you for making it.
At 12:54, was there a crew interior? There's a push of smoke and or steam coming from the adjacent windows. There's another transitional attack in here where I see material pushing under pressure out of a window. I don't see how that would be the case only to the exterior. Any other opening out of the rooms is going to get some of that. And while it might not be catastrophic, it's certainly not desirable. This is the best video I've seen defending transitional attack, but it still looks to me like in the wild it is inferior to interior operations, and certainly PPA. The fans are moving so much air that fires where they're appropriate to deploy at the beginning of the attack aren't getting away from us. When we're in a position to use them, we can walk into the structure, taking no heat. That's a rapid removal of toxic gases and fuel. A fog flowing and whipped entrains as much air as some ventilation fans, and if we're coming in from the unburned side, that's going to be bringing in less bad air. There are dead zones that won't be pleasant off air, but they're certainly not as bad as the room merely cooled off by a transitional attack. Even vertical ventilation hasn't been giving us problems with modern furnishings, even in modern buildings. The work you're doing is much more thorough and more refined that what I'm seeing here in the states for transitional attack. We still have people denying that streams can push fire, steam, smoke, etc, although that was never a claim from any of the experiments.
In cold countries like Sweden, how the fire water pipelines are laid in industrial plant ? Whether the fire water pipeline is laid underground in the yard ? How does the pipeline enters the shop/building ? Does it come out from the underground to overground and then enters the building? If yes, then how the pipeline which is outside the building (open to atmosphere) is insulated ?
You mean the average in the entire room while doing the transitional attack? In that case none, there is probably an over pressure in the room. If you mean locally behind and beside the stream hitting the ceiling, it is likely a very small under pressure there. But I have never measured it or seen measurements being made.
I don't get a particular piece: at around 48:30 there is the statement that if you are able to suppress the fire we would be able to start ventilating in order start searching for victims. Since we only suppressed (and not extinguish!) the fire, aren't we simply providing the fire with more oxygen? Or do we keep suppressing the fire from outside until we are able to reach and extinguish it (after rescue?).
To start ventilation, the easy answer is that the fire should be suppressed. Now the hard part is to judge if and when the fire is suppressed. My simplistic answer is that flaming combustion should be out and temperatures in the thermal imager should be below 150 degrees. It is a bit too safe in my opinion but it is a good starting position. If the fire is suppressed, the fire will not grow suddenly with the addition of oxygen provided with the ventilation. So we can ventilate and receive all the positive aspects with that. But we need to keep monitoring the fire, either from inside or outside, to make sure it does not grow to big again and become a problem. Ideally this can be done with an exterior person so that the inside crew can focus on search. After search and rescue we come back and completely extinguish it and do overhaul.
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Fantastic video, Thank you!
Una delle migliori spiegazioni dell'attacco di transizione che io abbia mai sentito. Esaustivo, interessante, conciso, rappresentativo. Davvero fantastico aspetto altri video in inglese!
Very very good arguments and demonstrations. I am very thankful for your time and effort. I am, however, now😊 questioning everything I know and have done lol 😆 😅
Well, at worst you justify what you are already doing. At best you re calibrate and improve. Either way I am glad I provided some value 🙂
Thank you for good information you bring to us with your videos
I enjoyed this video, it was well produced and easy to follow. I will share it with my crew and other company officers and create some discussions. Thank you for making it.
Tack tack
Thank you very much for this very interesting presentation.
Love it!!! Great presentation!!
This is gold
Right on Lars! You nail it Brother!
Great video
Terrific presentation Lars !
Thank you for this informatie
At 12:54, was there a crew interior? There's a push of smoke and or steam coming from the adjacent windows.
There's another transitional attack in here where I see material pushing under pressure out of a window. I don't see how that would be the case only to the exterior. Any other opening out of the rooms is going to get some of that. And while it might not be catastrophic, it's certainly not desirable.
This is the best video I've seen defending transitional attack, but it still looks to me like in the wild it is inferior to interior operations, and certainly PPA. The fans are moving so much air that fires where they're appropriate to deploy at the beginning of the attack aren't getting away from us. When we're in a position to use them, we can walk into the structure, taking no heat. That's a rapid removal of toxic gases and fuel. A fog flowing and whipped entrains as much air as some ventilation fans, and if we're coming in from the unburned side, that's going to be bringing in less bad air. There are dead zones that won't be pleasant off air, but they're certainly not as bad as the room merely cooled off by a transitional attack.
Even vertical ventilation hasn't been giving us problems with modern furnishings, even in modern buildings.
The work you're doing is much more thorough and more refined that what I'm seeing here in the states for transitional attack. We still have people denying that streams can push fire, steam, smoke, etc, although that was never a claim from any of the experiments.
Hit it! (suppression) and go get it!! (extinguishment). What gets water on the fire the fastest.
tack!
In cold countries like Sweden, how the fire water pipelines are laid in industrial plant ? Whether the fire water pipeline is laid underground in the yard ? How does the pipeline enters the shop/building ? Does it come out from the underground to overground and then enters the building? If yes, then how the pipeline which is outside the building (open to atmosphere) is insulated ?
Thank you for a good vid😊👨🚒🚒 Are you an instruktor at Sandö or Revinge, or are you an instruktor at a firedepartment?
Neither. I have my own training company doing training for individuals, departments or other companies.
Sir please guide us on industrial fire in details like hydrocarbon fire, chemical fire
Maybe I will have time in the future to make some presentations on that. Right now I am very busy.
One of the best presentations you have given.
One question, how noticeable is the negative zone at 09:03? great job!!!
You mean the average in the entire room while doing the transitional attack? In that case none, there is probably an over pressure in the room.
If you mean locally behind and beside the stream hitting the ceiling, it is likely a very small under pressure there. But I have never measured it or seen measurements being made.
I don't get a particular piece: at around 48:30 there is the statement that if you are able to suppress the fire we would be able to start ventilating in order start searching for victims. Since we only suppressed (and not extinguish!) the fire, aren't we simply providing the fire with more oxygen? Or do we keep suppressing the fire from outside until we are able to reach and extinguish it (after rescue?).
To start ventilation, the easy answer is that the fire should be suppressed. Now the hard part is to judge if and when the fire is suppressed. My simplistic answer is that flaming combustion should be out and temperatures in the thermal imager should be below 150 degrees. It is a bit too safe in my opinion but it is a good starting position.
If the fire is suppressed, the fire will not grow suddenly with the addition of oxygen provided with the ventilation. So we can ventilate and receive all the positive aspects with that. But we need to keep monitoring the fire, either from inside or outside, to make sure it does not grow to big again and become a problem. Ideally this can be done with an exterior person so that the inside crew can focus on search. After search and rescue we come back and completely extinguish it and do overhaul.
Lysande Lars👍🏼