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Permissible exposure limit (PEL) for carbon monoxide

['Toxic and Hazardous Substances - OSHA']
Permissible exposure limit (PEL) for carbon monoxide

The OSHA permissible exposure limit (PEL) for carbon monoxide is 50 ppm averaged during an 8-hour time period.

When CO poisoning is suspected, employees should promptly take the following actions:

  • Move the victim immediately to fresh air in an open area.
  • Call 911 or another local emergency number for medical attention or assistance.
  • Administer 100 percent oxygen using a tight-fitting mask if the victim is breathing.
  • Administer cardiopulmonary resuscitation (CPR) if the victim has stopped breathing.

Warning: Employees may be exposed to fatal levels of CO poisoning in a rescue attempt. Rescuers must be skilled at performing recovery operations and using recovery equipment. Employers must make sure that rescuers are not exposed to dangerous CO levels when performing rescue operations.