ACRONYMS
Occupational Safety and Health Administration
Headache, dizziness, nausea, coughing, and difficulty breathing
Time-weighted average
Hydrogen Sulfide
American Petroleum Institute
Can smell H2S odor
1ppm and as low as .13ppm
Threshold limit value
Sulfur Dioxide
American National Standards Institute
Instant unconsciousness, permanent brain damage or death
Parts per million
Carbon Monoxide
National Institute for Occupational Safety and Health
Irritated, inflamed eyes and irritated airways after 1hr of exposure
Short Term Exposure Limits
Carbon Dioxide
American Conference of Governmental Industrial Hygienists
Loss of smell after 3min, respiratory tract and eye irritation, IDLH
Recommended Exposure Limits
Oxides of Nitrogen