Chemical Engineering - Environmental Engineering - Discussion
Discussion Forum : Environmental Engineering - Section 1 (Q.No. 6)
6.
Maximum allowable concentration of CO2 in air for safe working is __________ ppm (parts per million).
Discussion:
4 comments Page 1 of 1.
Sreerag ns said:
7 years ago
Please explain the answer.
Akshay wadkar said:
9 years ago
Nice to clear the questions!
Sharad said:
10 years ago
250-350 ppm: Normal background concentration in outdoor ambient air.
350-1, 000 ppm: Concentrations typical of occupied indoor spaces with good air exchange.
1, 000-2, 000 ppm: Complaints of drowsiness and poor air.
2, 000-5, 000 ppm: Headaches, sleepiness and stagnant, stale, stuffy air. Poor concentration, loss of attention, increased heart rate and slight nausea may also be present.
5, 000: Workplace exposure limit (as 8-hour TWA) in most jurisdictions.
> 40, 000 ppm: Exposure may lead to serious oxygen deprivation resulting in permanent brain damage, coma, even death.
350-1, 000 ppm: Concentrations typical of occupied indoor spaces with good air exchange.
1, 000-2, 000 ppm: Complaints of drowsiness and poor air.
2, 000-5, 000 ppm: Headaches, sleepiness and stagnant, stale, stuffy air. Poor concentration, loss of attention, increased heart rate and slight nausea may also be present.
5, 000: Workplace exposure limit (as 8-hour TWA) in most jurisdictions.
> 40, 000 ppm: Exposure may lead to serious oxygen deprivation resulting in permanent brain damage, coma, even death.
(2)
Bitopan Sarma said:
1 decade ago
How can it possible. What about temperature ?
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