Call for reliable Furnace replacement in Florissant MO.
Call for reliable Furnace replacement in Florissant MO.

Looking for a Certified Heating & AC Contractor in the Greater St. Louis, Missouri Area? CALL (314) 839-3332

Looking for a Certified Heating & AC Contractor in the Greater St. Louis, Missouri Area?
CALL (314) 839-3332

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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ADDRESS: 890 N. LAFAYETTE FLORISSANT, MO 63031
HOURS: MONDAY - FRIDAY: 7:30AM to 5PM
24 Hours Service Available
CALL US TODAY
(314) 839-3332 or,
FILL OUT OUR FORM
For Furnace repair in Florissant MO, like us on Facebook!
For Furnace repair in Hazelwood MO, visit us on Google!
For Furnace repair in Hazelwood MO, visit us on Google!
To schedule your Furnace installation in Saint Charles MO, just email us!
 
890 N. LAFAYETTE FLORISSANT, MO 63031
MONDAY - FRIDAY: 7:30AM to 5PM