Fire Extinguisher

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Home › ✈️Aircraft › 🚁Helicopter › Safety - RC Helis are not toys › Fire Extinguisher

05-23-2007 06:48 PM 13 years ago

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wrathofkhan

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LA, CA - US

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Fire Extinguisher

I am planning on buying buying fire extinguisher (I am fairly careful handling my lipo, but just in case)

Would appreciate any pointers (where can i buy, what kind should i buy, how, etc. etc.)

Thanks in advance ... Khan

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05-23-2007 06:55 PM 13 years ago

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Andy from Sandy

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This is the correct extinguisher for lithium based products

http://www.chubb.co.uk/chserver/req...00200a00i000004

People recommend as a minimum dry powder but the only way to put out a fire involving lithium is to use the above device.

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05-23-2007 06:57 PM 13 years ago

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BarracudaHockey

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Jacksonville FL

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Yep. Same thing we used to carry on our rescue truck for putting out Volkswagon fires.Andy
AMA 77227
http://www.jaxrc.com

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05-23-2007 07:05 PM 13 years ago

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wrathofkhan

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where can we purchase the unit in US?

are there other options?

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05-23-2007 07:10 PM 13 years ago

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Andy from Sandy

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I can't help you with the US. Chubb is the supplier in the UK. See if doing a search on pyromet helps you.

EDIT: I don't think there are any other options except to watch the fire burn itself out.

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05-23-2007 07:16 PM 13 years ago

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wrathofkhan

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"I don't think there are any other options except to watch the fire burn itself out."

is it not possible to put sand on top of the fire to extinguish it?

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05-23-2007 07:22 PM 13 years ago

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ba board

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England

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Pyromet appears to be a Chubb term. Try looking for a Class D extinguisher and you will find loads of listings.

The extinguishers(generally yellow in colour, as opposed to the traditional red) appear to be available at about $400.00.

Its specialised field is reflected by its price.

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05-23-2007 07:23 PM 13 years ago

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BarracudaHockey

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Sand is about the only other option. PKP is useless and water will make it very exciting.Andy
AMA 77227
http://www.jaxrc.com

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05-23-2007 07:23 PM 13 years ago

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Andy from Sandy

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As you know sand is used to make glass but it might help to contain the fire.

If you are really serious about this it might pay you to go to a local fire station and ask the guys there.

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05-23-2007 07:30 PM 13 years ago

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ba board

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"Extinguishing Media: DO NOT USE WATER, SAND OR CARBON DIOXIDE. Use graphite, Lith-X (Ansul). If not available, use
dry sodium chloride, dry (anhydrous) calcium oxide, dry lithium chloride."

This is a direct quote from a materials data sheet.

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05-23-2007 07:39 PM 13 years ago

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1stPlace

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Although I have never tried to extinguish a lithium fire, I have snuffed out a magnesium fire with a halon extinguisher. Halon is the best choice for full scale aircraft. Most dry chemical extinguishers are corrosive to aluminum. So, I only have one dry chemical and five halon extinguishers in my shop.
Doug

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05-23-2007 07:40 PM 13 years ago

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Turk10mm

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Houston, Tx USA

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You need to purchase a class D fire extinguisher. Your city or close major metropolitan city will have a fire services companies that provide and service extinguishers. You can find them in the phone book under Fire services usually. D extinguishers are expensive due to the special nature.

You can also buy them online, as an example http://www.smokesign.com/tydmefifiex.html

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05-23-2007 07:42 PM 13 years ago

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Turk10mm

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Halon extinguishers will do very little good in the open. halon works by surrounding oxygen molecules and preventing them from being used by fire. Unfortunately, in open environments there is so much oxygen available that they can't keep up. In closed environments, you can die. the same reason the lack of available oxygen won't allow heat and fuel to burn, won't allow oxygen into your bloodstream.

Halon is illegal now, I believe for many reasons.

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05-23-2007 07:46 PM 13 years ago

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Turk10mm

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here's the same extinguisher, cheaper

http://www.firedot.com/mall/DClass.asp

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05-23-2007 08:57 PM 13 years ago

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smity777

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California

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In the US you need a "D" rated Fire Extinguisher. Call your local Fire Extinguisher company and ask for prices on that. Ansul, Amerex, and Badger are the best 3 brands of extinguishers imo. The one the UK guy listed above is a "D" rated extinguisher.

Types:
A= Ash (paper wood etc)
B= Flamables (oil, gas, etc)
C= Electrical
D= Burning metals (zinc oxide, magnesium, etc).

Hope this helps. I used to work on Fire Equipment for 10 years.

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05-23-2007 10:43 PM 13 years ago

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1stPlace

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Ohio USA

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Halon extinguishers will do very little good in the open.

You are correct in how a halon extinguisher works. But, I intentionally lit a magnesium Lawnboy mower deck on fire in my fire pit, just to see if my halon extinguisher could put it out. It took nearly 10 minutes to get the deck to light using a cutting torch, it only took 8 seconds to put it out and that was in the great outdoors. When I attended Spartan School of Aeronuatics, we each had to use halon extinguishers to put out oil and gas fires. When used properly, it only takes a few seconds to extinguish the flames. I would only resort to a dry chemical extinguisher after my halons have been depleated.
Doug

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05-23-2007 10:58 PM 13 years ago

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wrathofkhan

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all the 'd' extinguishers are quite expensive. aren't there any other economical extinguishers out there? or is everyone using lipos have these types of extinguishers which put out metal fires?

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05-24-2007 12:32 AM 13 years ago

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smity777

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California

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all the 'd' extinguishers are quite expensive. aren't there any other economical extinguishers out there? or is everyone using lipos have these types of extinguishers which put out metal fires?

I doubt it. In all actuallity our lipos are very small. The Metals in them when they burn create their own oxygen. All A, B, C type extinguisher put out fires by removing air from the fire. Example Dry Chem smothers the fire (like a blanket). CO2 F.E. Simple displace Oxygen with CO2 plus it does "Cool" the fire which helps take away the heat from the fire triangle (Fire Triangle = Heat+Air+Fuel source= Fire). Halon Displaces air as well and also cools the fire a bit. Foam and electricity a big No No along with Water Extinguishers, since they conduct electricity.

D type extinguishers don't displace air. They simply wrap the fire so it doesn't spread. The fire Continues until it is burned out (I.E Fuel source is gone).

So to try to answer your Question, Since Lipo Metals in Batteries create there own oxygen when they burn, displacing air in theory won't work. However, Like the person talking about Halon working for him. It was displacing some air and cooling effects that might have won the fire fight (prolly the cooling effect). Our batteries are Small so the cooling effects of Halon, CO2 might be a good second option. If I was to choose, I would get a CO2, They are expensive up front, but recharging them is very cheep and they get colder than halon. The new Halon Chemical is Halotron and Clean Guard (Halotron is much better imo).

I would guess that Dry Chem prolly won't work worth a darn. But I haven't heard of anyone trying it to date. So I don't have facts to support that theory.

As for me, I don't have a "D" extinguisher, but i do have a 5# CO2 (type BC)and 4 dry chem (type ABC) extinguishers at my house, and one in the truck.

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05-24-2007 09:24 AM 13 years ago

0Post 19

ba board

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England

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Should you be considering buying a "Halon" extinguisher, you need to bear in mind that some of the original contents of these extinguishers have been banned for use, in most countries. It appears that a new name "Halotron" is the US equivalent.
My best advice (after 32 years in the Fire Service) is to contact your local Fire safety/Prevention Dept and ask their advice. Whilst they are not able to recommend a particular manufacturer/supplier they should be able to specify exactly what you want. Stay away from reps as some unscrupulous ones will try and sell you the dearest they have.

The wrong type of extinguisher is as bad as having no extinguisher. Buy the right one first time out and then you know its want you need, if it all goes wrong.

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06-03-2007 10:38 AM 13 years ago

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MiniTitan

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Lancashire - UK

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From what I've seen of lipo fires by the time you've racd for you extinguisher the lipo would have burnt itself out. Unless of course your charging a lipo inside a case of many other lipos. Surely it would be cheaper to buy a lipo sack? I've also seena charging case that filters the smoke in case of an incident.

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Home › ✈️Aircraft › 🚁Helicopter › Safety - RC Helis are not toys › Fire Extinguisher

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