Call SVM Plumbing, Heating & Air for great AC repair service in Yreka CA
Call SVM Plumbing, Heating & Air for great Ductless Air Conditioning repair service in Mt Shasta CA
YERKA: 530-842-7862 • MT. SHASTA: 530-926-0004
YERKA: 530-842-7862
MT. SHASTA:
530-926-0004

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.
CALL YERKA: 530-842-7862 • MT. SHASTA: 530-926-0004
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To schedule your Ductless Air Conditioning installation in Mt Shasta CA, just email us!
To schedule your Ductless Air Conditioning installation in Mt Shasta CA, just email us!
 
1413 South Main St. Yreka, CA 96097
MONDAY - FRIDAY: 8:30AM - 5PM • CA LIC. #876151
Serving Serving All of Siskiyou County Since 1989
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1413 South Main St. Yreka, CA 96097
MONDAY - FRIDAY: 8:30AM - 5PM
CA LIC. #876151
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