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Date:         Wed, 2 Jan 2008 19:56:25 -0500
Reply-To:     Mike <mbucchino@CHARTER.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Mike <mbucchino@CHARTER.NET>
Subject:      Re: Westy OEM fire extinguisher
Comments: To: Dan Weeks <theprofileco@DWX.COM>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
              reply-type=response

The halon will interfere with a fire anywhere within an enclosed space that it's been injected into. Unlike other agents, it works by 'getting between' the oxygen molecules and the fuel molecules, and interfering with the combustion process. It doesn't need to be applied on top of the flames, like a dry-chem powder does. CO2 also works in similar way, but by actually displacing oxygen molecules and sending them completely away from the area. This is why CO2 isn't used in computer rooms for total flooding applications. Humans can exist without problems in an engineered Halon 1301 system enclosed space, but CO2 would extinquish both the flames AND the humans in an enclosed space. CO2 can only be used when there's a ready-changing supply of fresh air; ie - outside.

I stand by my original statements.

Mike B.

> Had I a > hole to shoot through in the engine hatch, I MIGHT have been able to > save it. I don't think shooting through the license plate hatch or > from underneath (where burning plastic and gas were dripping) would > have done any good, as the fire was on top. > > Dan > 80 7-passenger, RIP > 82 & 83 Westys >


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