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Fire extinguishing grenade

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DerGolgo
Zaphod's Zeitgeist
Location: Potato

Fire extinguishing grenade

Post by DerGolgo » Sat Apr 09, 2011 3:16 pm

This looks intriguing:

<iframe title="YouTube video player" width="480" height="390" src="http://www.youtube.com/embed/WeWs8Aqo2Fk" frameborder="0" allowfullscreen></iframe>

To me that looks like a seriously burning fire, but I may be wrong.
Now, someone should adapt this to 40mm caliber for grenade machine guns to mount on fire trucks...


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Sisyphus
Rigging the Ancient Mariner
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Post by Sisyphus » Sat Apr 09, 2011 6:26 pm

That's awesome.
Wonder what it is, must be some chemical that breaks the combustion chain, because it isn't cold and it doesn't displace oxygen.
One of the best firefighting chemicals here in the US was eventually outlawed because it was too hazardous. Purple K.
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rolly
Tim Horton hears a Who?
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Post by rolly » Sat Apr 09, 2011 6:42 pm

Really curious how it works, if it works on anything larger than a small shed, and if there was a person in the room where one goes off would they survive the extinguishing.

The guy throwing a scoop of water (or something?) into the fire after the extinguisher grenade is interesting, don't know the significance of it.

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Jonny
Sausage Pirate
Location: Anakie Rd.

Post by Jonny » Sat Apr 09, 2011 11:27 pm

The voice-over talks about ammonia gas and "tansan" gas (tansan generally refers to a liquid being carbonated or bubbly) and then something else that I don't get.
rolly wrote:The guy throwing a scoop of water (or something?) into the fire after the extinguisher grenade is interesting, don't know the significance of it.
I assumed that was the liquid in non-grenade form. Dunno...

JoJoLesh
Magnum Jihad
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Post by JoJoLesh » Mon Apr 11, 2011 3:15 pm

watched another vid on it...
Seemed like that Water-like substance was kerosene. Proving that combustion has been truly halted? IDK about that, as the fire semes to go out when he throws it.

I'm seein the grenade as a Rescue tool in that vid. As in when you know someone is behind that wall o fire, you throw grenade clearing path to drag victim out

http://www.youtube.com/watch?v=Fn-r4a4w ... r_embedded
"Be careful that in casting out your devils, you do not cast out the best thing within you – Nietzsche

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DerGolgo
Zaphod's Zeitgeist
Location: Potato

Post by DerGolgo » Wed Apr 13, 2011 12:40 pm

ah-hA!
some guy quoted on geekologie wrote:You huck it at a fire, and the shell, made of fragile plastic, breaks, unleashing both a fire-extinguishing liquid agents, and chemicals that mix to release carbon dioxide and ammonia, which force out the oxygen and smother the flames.
http://www.geekologie.com/2011/04/makin ... n-agai.php
If there were absolutely anything to be afraid of, don't you think I would have worn pants?

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JoJoLesh
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Post by JoJoLesh » Wed Apr 13, 2011 1:33 pm

and what does the Ammonia do? Not feeling very chemist at the moment
"Be careful that in casting out your devils, you do not cast out the best thing within you – Nietzsche

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Sisyphus
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Post by Sisyphus » Wed Apr 13, 2011 3:13 pm

Not a chemist but I've been to fire school more than once, and I think maybe the ammonia bonds with the oxygen, making it unavailable for cumbustion. That's how drychem extinguishers work. CO2, of course, will put out a fire but has to be present in such a volume as to displace the oxygen. That's a huuuuge volume. But if you had something that could bod with the O, then your problem is solved.
I think this is an awesome idea and could go far in saving lives and property, provided it's done safely and effectively!
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DerGolgo
Zaphod's Zeitgeist
Location: Potato

Post by DerGolgo » Thu Apr 14, 2011 6:39 am

Sisyphus wrote: I think this is an awesome idea and could go far in saving lives and property, provided it's done safely and effectively!
Like I said. Grenade-machine-gun.

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If there were absolutely anything to be afraid of, don't you think I would have worn pants?

I said I have a big stick.

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