Call for reliable Heat Pump replacement in Wickenburg AZ.
(928) 684-2333
51800 U. S. Hwy. 60-89 Wickenburg, AZ 85390
ROC 110908 • ROC 053250

Allowable Exposure Levels to Carbon Monoxide

Allowable (Legal) Limits for Carbon Monoxide

Occupational Safety & Health Administration, USA (OSHA) (for industrial situations) -

Permissible Exposure Limit (PEL, by TWA) - 50 ppm, 8 hrs.
Old PEL Standard (by TWA) - 35 ppm, 8 hrs.
Threshold Limit Value (TLV, by TWA) - 25 ppm (29 mg/cu. m)
(recommended by American Conference of Governmental & Industrial Hygienists ACGIH)
Ceiling (max. value, 15 min.) - 200 ppm (229 mg/cu. m)

MI Occupational Safety & Health Administration (MIOSHA) -

PEL (Industry, by TWA) - 35 ppm, 8 hrs. (38.5 mg/cu. m)
PEL (Construction, by TWA) - 50 ppm, 8 hrs. (55 mg/cu. m)
Ceiling (max. value) - 200 ppm (229 mg/cu. m)

Environmental Protection Agency, USA (EPA) -

Domestic, outdoor air, all ages (TWA) - 9 ppm*, 8 hrs.
Domestic, outdoor air, all ages (TWA) - 35 ppm, 1 hr.

World Health Organization (WHO) -

Domestic, outdoor air, all ages (TWA) - 9 ppm*, 8 hrs.

American Society of Heating, Refrigeration & Air Conditioning Engineers (ASHRAE) -

Indoor air (leakage at a heat register) - 9 ppm

American Gas Association -

Indoor air (leakage at a heat register) - 15 pm


TWA - Computed by making measurements at intervals over 8 hours, then adding the sums of the concentrations and the intervals, and dividing by 8 hours (480 min.). * Based on several published studies of people with coronary ischemic disease showing ECG changes during moderate exercise when breathing concentrations of CO giving 3% COHb.
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CALL US TODAY
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OR, FILL OUT OUR FORM
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51800 U. S. Hwy. 60-89 Wickenburg, AZ 85390
HOURS - MONDAY to FRIDAY: 6AM-7PM
For Heat Pump repair in Wickenburg AZ, like us on Facebook!
For Heater repair in Congress AZ, visit us on Google!
To schedule your Furnace installation in Morristown AZ, just email us!
For Heat Pump repair in Congress AZ, check out our Yelp!
51800 U. S. Hwy. 60-89 Wickenburg, AZ 85390
MONDAY - FRIDAY: 6AM-7PM
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