[AT] OT - AFFF Fire Foam Unit

Dan Folske dfolske at nccray.net
Thu Jul 30 19:54:33 PDT 2009


S130/S190 are basic wildland fire training and wild land fire behavior
----- Original Message ----- 
From: "Steve W." <falcon at telenet.net>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Thursday, July 30, 2009 12:27 AM
Subject: Re: [AT] OT - AFFF Fire Foam Unit


> Dan Folske wrote:
>> We have a CAF unit on one of our small trucks that sucks foam concentrate
>> from a 5 gallon bucket and injects it into the water stream along with
>> compressed air from a small engine driven compressor. Our main pumper
>> carries a siphon unit which can be put into a 1 1/2 inch line to suck
>> concentrate from a bucket and then you put a foam nozzle on the end of 
>> the
>> attack hose. The foam nozzle has vents which pull air into the water foam
>> mix creating the foam bubbles. The CAF unit adds a greater volume of air 
>> and
>> seems to provide a more uniform bubble size. Each additional trapped air
>> bubble is another layer of insulation. I don't recall offhand what we're
>> running for air pressure or volume but it is not extreme. I'll look 
>> tomorrow
>> if I get the chance.
>>
>> None of the small departments around here use nitrogen. I would suspect 
>> that
>> the nitrogen might be better in some circumstances with volatile fuels 
>> and
>> confined spaces but for our use plain compressed air or natural 
>> aspiration
>> works fine.
>>
>> Dan Folske
>> Assistant Fire Chief
>> Bowbells Volunteer Fire Department
>>
>> There maybe a professional firefighter on the list that can provide you 
>> with
>> more details.
>>
> Dan,
>
> ALL firefighters are Professionals. Some just draw a paycheck.
>
> I was looking at your web site and noticed the courses you have. I know
> most of them but what is the S130 , S190 ?
>
> -- 
> Steve W.
> Captain, EMT, Fire Police
> Van Hornesville Fire Dept.
>
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> http://www.antique-tractor.com/mailman/listinfo/at


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