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Air Contaminants

Air Contaminants . Air contaminants are: . Dusts Mists Fumes Vapors Gases. 1a. OSHA's Permissible Exposure Limits (PELs):. Ceiling Values 8-Hour Time Weighted Averages Acceptable Ceiling Concentrations. 2a. OSHA's Permissible Exposure Limits (PELs):.

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Air Contaminants

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  1. Air Contaminants

  2. Air contaminants are: • Dusts • Mists • Fumes • Vapors • Gases 1a

  3. OSHA's Permissible Exposure Limits (PELs): • Ceiling Values • 8-Hour Time Weighted Averages • Acceptable Ceiling Concentrations 2a

  4. OSHA's Permissible Exposure Limits (PELs): • Acceptable Maximum Peak Above the Acceptable Ceiling Concentrations • Skin Designation • Reference to another OSHA standard 2b

  5. PELs are given in: • ppm • mg/m3 • Mppcf 2c

  6. Air monitoring survey protocols • Purpose of survey • Where to sample • What to sample 3a

  7. Air monitoring survey protocols • Who to sample • Number of samples • Collection and analysis 3b

  8. Sampling methods • Direct reading instruments • Grab samples • Passive dosimeters • Active dosimeters • Other 3c

  9. Determining exposures E = (Ca x Ta + Cb x Tb + . . . Cn x Tn) 8 • E is the equivalent exposure • C is the concentration of contaminant • T is the duration of exposure 4a

  10. Control measures • Engineering • Administrative • PPE 5a

  11. Engineering controls • Ventilation • Equipment design 5b

  12. Administrative controls • Substitution • Procedures for use • Scheduling 5c

  13. PPE • Respirators • Gloves • Eye and face protection • Chemical-resistant clothing 5d

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