Contaminants' mode of removal
Oxygen levels below 19.5% are efficient.
Oxygen levels below 16% can cause decreased mental effectiveness.
Oxygen levels below 10% can cause unconciousness.
Oxygen levels below 6% can cause death.
High Efficiency Particulate Air (HEPA) filter.
Air Supplying Respirator (ASR).
Negative Pressure Respirator.
None of the above.
PFT= MCL x EL
EL= PF/ MAC
PEL x PF= MAC
OSHA requires inspection and maintenance of respirator everyday and everytime you take off and put on a respirator.
Cleaning is required every time a respirator is taken off at the end of a tast, or at the end of the day.
An employeer is not required to have the cleaning procedures in the written respiratory protection plan.
It is neccessary to constantly monitor the work area even if employees are wearing their protective equipment.
Oxygen content of 19.5-23.5% and Hydrocarbon content of 5 mg per cubic meter of air or less.
CO content of 10 ppm or less.
CO2 content of 1,000 ppm or less.
Lack of noticeable odor.
All of the above.