Re: Fire Suppressant Chemicals in a lapotp. What to do???

From: Eric Snyder (eas90168_at_aol.com)
Date: 08/24/04 

Date: 24 Aug 2004 04:46:02 -0700

If it is what I'm thinking, it's AFFF ( Aqueous Fire Fighting Foam )
and is made from animal blood. It is highly corrosive and unless the
equipment is immediately flushed with large quantities of fresh water,
the equipment is destroyed. You need to dissasemble the equipment
right away, remove any batteries, and immerse the equipment in large
quantities of fresh water, distilled water is prefered because there
are no additives or chemicals. If you can find it using a Google
search, the US Navy's Corrosion Control Manual is an excellent
reference.

Eric N7DLV

mike <spamme0@juno.com> wrote in message news:<412A8E2F.2020904@juno.com>...
> A local ham radio operator got hit by the serial arsonist who's
> been torching cellphone towers in the Vancouver, WA area.
> Good news is that the tower was mostly unharmed. Bad news is that the
> house is a total loss...but that's another story.
>
> Fire department put it out with some kind of fire suppressant foam.
>
> The thinkpad laptop was on at the time. Inside it's quite a mess.
> localized corrosion all over the place. You can sure tell which pins
> were the power pins on each IC. Memory contact pads are seriously
> eaten up. I washed it a bunch in simple green and alcohol and managed
> to get everything but the keyboard fixed up.
>
> But we've got a LOT more electronic equipment to fix up.
> Anybody know what's in this foam stuff and have ideas on best way to
> clean it up? It's likely that at least some of the equipment will
> be sittig there for weeks until we can get around to it. Should we try
> to hose it off if it's gonna be sitting for a while?
>
> I called several local fire departments. I got the serious runaround.
> Doesn't sound like they don't know what's in it. Sounds more like they
> don't want to tell me what's in it.
>
> Google got me lots of hits on effects on furry creatures, but nothing
> related to cleaning up electronic equipment.
>
> I did find one MSDS that mentions:
>
> Composition
> Substance CAS No EINECS No Risk Phrase
> Ammonium polyphosphate 68333-79-9 269-789-9 none 100
> (polyphosphoric acid, ammonium salt)
>
> That can't be good...
>
> Suggestions for treatment?
>
> Anybody ever tried to disassemble a thinkpad 600E keyboard? Looks like
> it's glued together???
> Thinkpad keyboard for sale?
>
> Thanks, mike

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