That's a hot photo. They could be using AFFF Foam like fire dept's use. It not only knocks the fire out, but smothers it by taking away the O2.
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Cool shot, thanks Rob.
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| Posted by John on March 23, 2007 | |
The white residue is a soaping/foaming agent commonly used now by fire departments called Class A foam. (But its different than AFFF which is used uniquely on flammable liquids.) Its safe and non-toxic. The soaping agent and a special nozzle make the water into a air-filled lather like shaving cream. Its bettter to use for grinding because you use less of the available tank water to make the lather than you would a soaking water spray, so the water goes farther in use. It also cools better than a water spray which turns to steam and evaporates; or soaks away into the ballast. And the foam stays in place like shaving cream to prevent any lineside fires that might begin from a glowing spark later. Better living through chemistry!
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