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The worst expected symptoms for humans when concentration of carbon monoxide reaches 8% of air is which of the following? a. no adverse effects for up to 8 hours of exposure b. dizziness after 45 minutes of exposure c. nausea, headache, and dizziness after 20 minutes of exposure d. unconsciousness or near unconsciousness after only a few minutes Solution | Posted 08/10/20 d. unconsciousness or near unconsciousness after only a few minutes, per NFPA 12 Table G.1.
5 Comments
Michael
8/7/2020 03:24:26 pm
Table 45.9 in the SFPE Handbook lists both c and d for an 8% concentration by volume. It depends on the physiology of the person but I'd say on average nausea, headache, and dizziness would be the norm within a few minutes. However, the question asks for the worst symptom which is D.
Thomas Reinhardt
8/7/2020 03:57:12 pm
A.
NinaB
8/7/2020 09:58:08 pm
d. NCEES. 5.4 p.67 (7-10% CO2, after a few minutes unconsciousness or near unconsciousness.)
j
8/9/2020 01:43:04 pm
8% = 80000 ppm fatal in minutes
SK
8/15/2020 07:30:10 pm
D. IDLH (Immediate Danger of Loss of Health) for CO is around 0.1 mole% (1000 ppm) and here are 80K PPM Leave a Reply. |
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