5
Part Number
18160, F, 06/29/2021
Information on conditions which can result in transient CO situations, such as:
•
Excessive spillage or reverse venting of fuel burning appliances caused by outdoor
ambient conditions, such as:
▪
Wind direction and/or velocity, including high gusts of wind. Heavy air in the
vent pipes (cold/humid air with extended periods between cycles).
▪
Negative pressure differential resulting from the use of exhaust fans.
▪
Simultaneous operation of several fuel burning appliances competing for limited
internal air.
▪
Vent pipe connections vibrating loose from clothes dryers, furnaces or water
heaters.
▪
Obstructions in or unconventional vent pipe designs which can amplify the above
situations.
•
Extended operation of un-vented fuel burning devices (range, oven, etc.).
•
Temperature inversions that can trap exhaust gases near the ground.
Drug or alcohol use increases the effect of CO exposure. Individuals with cardiac or respiratory
conditions are very susceptible to the dangers of carbon monoxide. CO poisoning is especially
dangerous during sleep when victims are unaware of any side effects. The following are
symptoms that may signal exposure to CO:
• Headache
• Drowsiness
• Tightness of chest or hyperventilation
• Fatigue or Weakness
• Flushed face
• Inattention or Confusion
• Nausea
• Lack of normal
coordination
Persons who have been exposed to carbon monoxide should be moved into fresh air immediately.
Persons who have been subjected to high concentrations of CO should be placed in the care of a
physician. To learn more about CO poisoning, contact your local health authorities.
