Fire extinguishers

[MB]

Job well done Darren, first on scene saviour mate ;-) !! Actually read the heading to this thread and 'MudRunnerTD' named as last post thinking you were finally divulging the blueprints to the awesome Murray River fire extinguisher hot water 'Donkey' :-)

[10G]

What about under the vehicle with spinifex burning in a hard to get at place. Would a powder extinguisher be able to get into spots like that? I'm guessing the powder extinguisher works by suffocating the fire.

[UncleFrosty]

Dry Chem extinguishers break the chemical reaction that leads to flame, so any breeze or anything that breaks the powder coat etc can impact on the effectiveness of these significantly (demonstrated when used on pooled fuel fires - re-ignites easily when powder layer on surface is broken). They don't remove any heat as such, so water works better on grass fires under vehicles.
The ratings on the side of the extinguisher indicate it's usefulness in each type of fire:
A - solid fuels (eg grass/wood)
B - liquid fuels (eg diesel)
C - gas
D - combustible metals (eg magnesium)
E - electrical
F - fat/oil (eg deep fryers)
The higher the number next to each letter the better it is at extinguishing that fire.
DC is a good All-rounder. Water way better for combustible solid fires due to its heat-removing properties. Foam for fuel, CO2 for electrical.
Big cojones for C, D or F class fires...

[threedogs]

Mount it so you can grab it in a hurry in
front of the driver seat works for me

[10G]

Dry Chem extinguishers break the chemical reaction that leads to flame, so any breeze or anything that breaks the powder coat etc can impact on the effectiveness of these significantly (demonstrated when used on pooled fuel fires - re-ignites easily when powder layer on surface is broken). They don't remove any heat as such, so water works better on grass fires under vehicles.
The ratings on the side of the extinguisher indicate it's usefulness in each type of fire:
A - solid fuels (eg grass/wood)
B - liquid fuels (eg diesel)
C - gas
D - combustible metals (eg magnesium)
E - electrical
F - fat/oil (eg deep fryers)
The higher the number next to each letter the better it is at extinguishing that fire.
DC is a good All-rounder. Water way better for combustible solid fires due to its heat-removing properties. Foam for fuel, CO2 for electrical.
Big cojones for C, D or F class fires...

Thanks Unc, very helpful.

Anyone know if you get water filled fire extinguishers?

[MudRunnerTD]

Thanks Unc, very helpful.

Anyone know if you get water filled fire extinguishers?

Either of these will work and have other uses around camp. Its only water.....

http://www.ebay.com.au/itm/NEW-2L-PR...wAAOSwQJ5USkS3

http://www.ebay.com.au/itm/Pressure-...sAAOSwUKxYiIyR

[Bacho86]

I also carry a fire blanket in the patrol when camping, won't help you with grass fires under the patrol but more for general camp / cooking fires etc


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[dads tractor]

I give any powder type a good knock and shake every couple of weeks to make sure the powder doesn't settle and become useless. Because my current extinguisher is lying horizontal on the floor I rotate it every now and then.

Mudnut this is the biggest downfall of dry chem we had to fluff up our 250kgs vessels every quartely and our trucks were inside the airport .Diesel vibration will pack a dry chem in short time as well .solution invert extinguisher and give a few tapes on the corner of the tire
tread and shake like a race car winner on the podium .Winner

[Old Wal]

Mudnut this is the biggest downfall of dry chem we had to fluff up our 250kgs vessels every quartely and our trucks were inside the airport .Diesel vibration will pack a dry chem in short time as well .solution invert extinguisher and give a few tapes on the corner of the tire
tread and shake like a race car winner on the podium .Winner

This too was pointed out to me when I did a dangerous goods course many years ago, We had to have an inspection list or schedule that included shaking up the powder. If you have the space an extinguisher that has a hose attached is better . If you have an under dash fire you can aim the hose up under the dash - dry powder extinguishers don't work for long upside down or on their side. Likewise if you have an engine bay fire you can just pop the bonnet ( without lifting it ) , insert the hose and give a quick blast to quell the fire a little . Saves getting a face full of flames

[10G]

Yeah this is what I'm thinking of. You're driving along and the bloke behind says "There's smoke coming out from underneath". You stop, but what extinguisher do you grab?

A pressurised extinguisher full of water would be great for spinifex fires as the water will go everywhere. A powder of CO2 extinguisher would be good for an electrical short, but hard to get it up into places when you're on your back under the truck.