ฝัง
- เผยแพร่เมื่อ 22 มิ.ย. 2016
- There's a big fire in the building and suddenly all the sprinklers turn on -- that's not really how works. Let science extinguish this myth.
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How do sprinklers work?
www.firesprinklerinitiative.or...
"Contrary to what many Americans think, we are not at greatest risk from fire in hotels or other public places; it is at home, where most of us feel the safest, that we are actually at highest risk of fire."
Sprinkler system types
wiginton.net/pdf/Wiginton-Fire...
"Wet - Wet type systems are the most common type of sprinkler system that is installed. A wet pipe system has water in the pipes in the ambient or normal condition and has heat responsive elements on all sprinklers. Thus, water is instantaneously discharged from a sprinkler when it actuates."
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That flame on Amsterdam was only about a 1000km off.
lol
Just wanned to say that
They put it on Poland.
Julian Klimczyk
more like Russia (Kaliningrad)
And it barely touches Istanbul!
So in a movie you're better off just hitting the glass with the lighter rather than creating a flame…
Yeah you can do that.
Karol Bała ههه
i habe a small collection of different heads. and temps
now imma go around looking at the colors of the fire sprinklers lol
SAME AND ALL THE TIME
Great explanation of the system and fast. I have learned a lot from you. Thank you!
Thank you for finally using Celcius in your videos :)
what is celcius?
imperial peasant
+Erdem Kostik it's spelled Celsius you commie fuck. That's how you spell it in the US atleast...... Shit.
ahahah.... thanks?
Great video. Actually really wondered about this. Can we get more videos on black holes and stuff related? Always a great topic. Especially with all the new stuff being attempted to study them, like the first photographic sightings being done.
i install fire sprinkler systems! it's awesome that DNews mentioned things that i do every day!
im a 3rd year in calgsry alberta canada ! lol
the temps on the bulbs and hazards classes they talk aboit are wrong lol
Same here, I install these for living too :) a lot of people, even the other construction workers have no idea how these systems work in real life
That must be sad, depressing, boring job
The point that he missed was that dry systems are mainly installed to prevent sludge and rust in the stagnant pipes from blocking the heads.
Her in the UK, wet systems are flushed through by the service engineer at least once a year.
When I was in college somebody used a lighter to burst one of these things in my dorm. It ended up dripping through 8 stories of the building, including a radio station and an urban outfitters located below, and if I recall correctly, doing $20,000's of damage. And that was just one sprinkler going of in the building. It took the building hours to deal with the problem, and we had to spend the night in the lobby of an apartment building across the street.
Turtle Von Nurtle r/thathappened
Nice historic review and explanation of the standard fire sprinkler heads. Good review.
Very informative. Im in a hotel room and wondered “how does that work” found this video and now I know
@dnews The bulbs pictured in the video are called "frangible bulbs". Fusible links that Trace said, are small pieces of metal that have a low melting point, thus they melt and release the suppression agent. Great video though!
-Firefighter in NC
they are also called solder link
Hay Trace
tell me about LPG, Production, Liquefaction, Transportation sply over seas, and problems while carrying it and preventive measures, discharging, and end users consumption
"DNEWS" is by far one of the most informative channels on TH-cam. Keep up the great work! I'll be a subscriber for life!
😍😍😍
you forgot about drama alert
Very informative! Thank you! 🤴
being from the military I know this is all true, but we have the that melts is clear. is that miltary only or is is a different temperature?
Reccaman from what i have been told, if the element in the fire sprinkler is clear it has something to do with the ambient temperature/sunlight. You can google this (simplex) there is no sprinkler that comes factory with no identifying color. I have also been told that if you put the “clear element “ in a cool place the color will come back
could you please elaborate on working of sprinkler having inert gases or foam
Being a fire sprinkler fitter, good job on this one
"Simple Physics" = "Rocket Science" To Most
I wonder if the "classic" sprinkler heads with a gallium plug are still in use? Gallium, a metal related to aluminum, melts at about 85 degrees Fahrenheit, so a plug of gallium would melt and release the valve when the temperature at the ceiling reaches that value.
Much improved articulation!
I always Wondered How!
Thanks
Cinou Ayyyeee!! hi
" A sprinkler system out in the wild" hahaha. i love it ^_^
I always meant to get round to researching the true answer.. Thank you .. now that is one I can now tick of my list.
Is it true that no building properly equipped with sprinklers had a fire run out of control?
Oh lawd Jesus there's a fire.
Aint nobody got time to look for the color of the small glass vials
Note to self: Ignore the temptation to break the bead in your dorm room
Awesome thanks for the knowledge 😊
Is there a video about smoke alarms by DNews? I already know how they work, but it would make a neat video for those who don't.
-__- Seriously people. Stop commenting before finishing the video. Is this what America became? A comment first competition?
+Jamil that was so passive aggressive lol😂
+Jamil LMAO
lol
+Jamil I am going to take that as a compliment XD
stfu
how a sprinkler really works is theres a heat sensitive liquid inside a tiny glass tube and builds up pressure and explodes breaks a vacuum tube witch lets water flow water though or it breaks and lets water inside the tube flow down and the tip makes it a spinkler
Red isn't the lowest bursting sprinkler head, it's orange; it bursts at 135 degrees. Red is simply the most common used for residential and commercial applications. Also black sprinkler heads aren't rated for 650 degrees, they're rated for 500. Most heads that you see in warehouses are usually green and occasionally blue.
thank you, outstanding, concise and comprehensive, go ahead and do more for the whole F.F. Systems
my dad is a carpenter for over 40 years most of the time was construction of buildings or remodel of buildings and he told me before 1930 all sprinkler for deluge just like he talked about an airport hangars but in the 19 1930s they started doing me pressure pipe and only released where there was a fire
That is not true. Airport hangers are a different animal.
Deluge systems like you see in movies are very rare. I’ve only ever seen one in years working in fire safety.
ive installed well over 10.
Everything he said is 100% correct! one other thing is that when the sprinkler's activate, it trip a device called a water flow switch. When that switch is activated is activated the fire alarm system.
@Aslin Fire Safety most designers dont understand dry systems at my company either
Sprinklers scare me to death. I will scream and cry if a sprinkler sprayed water!
Same girl. But I'm glad that they don't turn on together.
I'm always scared on vacation because every hotel bathroom I've been in has one and the ceilings are low
I'm always so afraid I'll hit one
I figured this out when I was just a kid, granted I thought it was different hardnesses of wax that triggered at the right temperature. But that was only because I was too short to see them in detail.
*Claps* I gotta give you credit for coming up with this video idea!
you know what happened in canada ft mcmurry the city burned and it is still happining
Have one of these in my room :)
Dry systems are not empty, they have pressurized air inside the pipes. When a sprinkler head goes off, the air-pressure inside the pipes drop dramatically telling the system to open the valve for water.
I'm at a hotel and was wondering about this because i smoked.. something that rhymes with marine iguana, and noticed there was one inches from my head when i blew smoke out the window. now i know smoke doesn't effect them thanks :D
ukickmeikicku there can still be smoke detectors in the room, and most hotels have strict rules against smoking, but vaping may be ok
also in a wet system, the water inside will be absolutely filthy to the point where it is black due to sitting in piping for what is most likely years on end.
I want to know about zener barrier
Could you still set the system off by, say, bludgeoning or shooting one of the sprinklers itself?
ilovethelegend ye
how much does our soul weigh and would our hearts weigh less with out our soul(living).? ill like to know about that.
Amaterdam is in Latvia?
to add on. most newer sprinkler system's have a electric pump to build pressure.
when the bead breaks the pressure will fall fast and a big electric or diesel pump starts up to produce low pressure but high volume off water.
u can see this when it beaks u get a splash then a drip and then the big spray.
as a bonus if u get a very small leak or a drip the small pump can sens that and warn the maintains team and not trip the big pump and the alarm.
SoY_FooD no, that is incorrect. You only get a fire pump if you do not have the pressure to support a sprinkler system. Nobody installs a $75,000 pump just because. Secondly, once the bulb or fusible link is broken you will immediately get the water pressure in the system. No drip and then big spray. If you are talking about a dry system, you will get whatever residual water may be in that system (probably just a mist) from testing and then you will get whatever pressure the dry valve is holding back. But, yes you are correct about the jockey pump. This maintains the system pressure generally to within 10psi of the main fire pump. However, there is no warning that I’m aware of to the maintenance team unless they are seeing the jockey pump running excessively. The jock pump is supposed to run when it detects a loss of pressure.
The main purpose of them is so you have a much higher chance of getting out alive. Most cases they will put out or seriously hinder a fire, but their purpose is life safely, not saving the building. The flood damage is typically higher than the fire damage when these systems activate. Hence, almost always, the fire system does more building damage than the fire.
Fixing a flooding building is better than losing the entire building in most cases
i guess a sprinkler guy was at the dnews offices..
The biggest wildfire in Canadian history was the fort McMurray wildfire and it started 2 months ago and it's still going and I did evacuate fort McMurray
Does a sprinkler has to be replaced after it has been used?
deepvybes yeah
A way to escape using the realistic sprinkler method is after popping the sprinkler, make the people chasing you wait for the fire alarm to go off while you're able to get away
Do you have any videos of "How does it feel to fall unconscious?"
If not, plz make a video about it.
Get intoxicated?
Tell somone to knock you out
Not good.
+Luna Pacheco You're confused. The question is not what being unconscious feels like, but what falling unconscious feels like.
It is possible to physically break the bead causing the system to activate?
NoM4D yeah it's glass
Thanxx
Nice shirt Trace !
Guess the name of this movie with the following quote "The pool on the roof must have a leak"
Thanks a lot
I always though that the red was wax and that it melted to let the water out.
I am pretty proud of myself. I figured this out on my own working in a sbarros pizza in the mid 2000's. We had a low ceiling where you could touch one of the heads and I realized that they are independent of each other. I did however think they used a wax rod and not a glass tube but I was close.
I install these all day long
Didn't know you could find Amsterdam in Poland?
...
I really hate the person who decided it was a good idea to put the subtitles in a yellow frame. When I see a shiny colour (like the yellow in the frame) contrasted with another bright colour (like white) it gets borrowed, I can barely see anything, and it tires my eyes so it hurts within a few minutes. Ty youtube developers!
Our neighborhood houses have deluge systems, bc once my neighbors had a garage fire and all there sprinklers went off
People install these systems due to the lower cost. It is a very false economy, particularly when they trigger accidentally. Some insurance companies exclude water damage in areas remote from any fire area.
Singapore !!!
3:26 Trace, your hair is almost exactly the same.
Great
As an engineer, I approve this message!
To add, the water that comes out of wet systems is also laden with oil that was used to cut and tread the original piping. This "water" is black and smells like oil. It may save your building, but everything that is under that particular head will be all but ruined.
ss4u2nv you can flush the system via a flow valve at the end of the run
It seems like they also wouldn't want all of the sprinklers to go off at the same time because they wouldn't want an entire building to get water damage if there was just a localized fire.
Why aren't sprinkler systems electronic like fire alarms? This system seems like a slow process and it is! Couldn't it prevent more damage if it activates as early as the alarm?
big like
When I get a house, I'm gonna have it built like a commercial building. A building built of 2x4s is asking for trouble and fire. Your average house is like a pile of twigs.
Now I can be that asshole in the theaters yelling "fake!".
0:28 ...Fort Mcmurray... :(
thanks
got up and walked around my building just staring at all the different sprinklers
Trace!!! 💜
So does that mean that fire sprinklers aren’t reusable and have to be replaced after fires
Nerd_World in a wet system yes. I'm not sure about a dry one. But honestly a sprinkler head would be the last of my concerns after a fire took place in my place.
couldn't the glass shards cut someone or get in to someone's eye?
did you seriously put the marker of Amsterdam on the other side of Europe?
...how about some geography lessons for the ones who animated and edited that part? :p
Should of included how smoke alarms work, how does it know there is lots of CO2 or whatever in the air?
This was 🔥
Are you being insulting?
Interesting...
Thx
How about air ducts in buildings being used as an escape route!
Good
who knew there was actually so much to this. very interesting
you forgot one fort mc murry i live only one province from there
yes good save
Do fire sprinklers go off if a fire is cause by grease fire?
Of course it does, any sort of heat at the right temperature will trigger the sprinklers.
Dry systems do have pressurized air in them
Have a nice day by Robert.Tamilnadu Safety Council. Secretary
...over 300°C.. at least Trace told it correctly :)
*anywhere in the northern hemisphere
btw, first, by coincidence...
You forgot one important thing... which is that once on. It does NOT stop until all the water in the tank on the roof or whatever is used up. Ergo, taking a hammer to one of them like a prank. Can be a very, very costly prank that might make you a debt slave for a long time.
Your bulb info is incorrect. Everything else was well done. Orange = 135, Red = 155, yellow = 175, green = 200, blue = 286, purple = 360, and black 400-500+. The Fusible links are: 165, 212, 220 and up.
I miss getting 2 videos a day.
Its heat. the color of the glass is the marker on the heat it will fall off and release water.