Occupational Safety and Health Administration OSHA

Slide 7


Title: Manhole Conditions

Type: Text Slide


  • After recovery, the medical examiner requested sampling of manhole
  • Fire Department - Haz Mat Division took some multi-gas readings about 3 hours after recovery
  • Results were 16.3 to 17% for oxygen and 0.0 to 4.5 % LEL
  • Zero readings for carbon monoxide and hydrogen sulfide
  • No readings taken for carbon dioxide
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