Estimating Data for Incapacitation of People by Fire Smoke

Research studies on wood smoke and other air pollution.

Estimating Data for Incapacitation of People by Fire Smoke

Postby Wilberforce » Tue Jun 12, 2012 4:00 pm

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Estimating Data for Incapacitation of People by Fire Smoke
Richard G. Gann
http://fire.nist.gov/bfrlpubs/fire04/PDF/f04008.pdf
Abstract. Fire hazard and risk analyses establish the basis for providing conditions of safety
for people, including those that are more sensitive to fire smoke than others. For this purpose,
this paper develops a method for estimating, from information on lethal and incapacitating
exposures for rats, smoke toxic potency values for incapacitation of smoke-sensitive people.
For those engineering applications where the mix of combustibles is unknown, generic values
are derived of the concentration of smoke that would incapacitate smoke-sensitive people in
5 min: 6 g/m3 for a well-ventilated fire and 3 g/m3 for an underventilated (e.g., post-flashover)
fire. These values are estimated with significant assumptions in their derivation, resulting in
an estimated uncertainty of about a factor of two. Further, there is a wide range of smoke
toxic potency values reported for various combustibles, and some of these will lead to values
significantly higher or lower than these generic figures.
• The Surgeon General has determined that there is no safe level of exposure to ambient smoke!

• If you smell even a subtle odor of smoke, you are being exposed to poisonous and carcinogenic chemical compounds!

• Even a brief exposure to smoke raises blood pressure, (no matter what your state of health) and can cause blood clotting, stroke, or heart attack in vulnerable people. Even children experience elevated blood pressure when exposed to smoke!

• Since smoke drastically weakens the lungs' immune system, avoiding smoke is one of the best ways to prevent colds, flu, bronchitis, or risk of an even more serious respiratory illness, such as pneumonia or tuberculosis! Does your child have the flu? Chances are they have been exposed to ambient smoke!
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