Confined Space Hazardous Atmospheres

Corrosive Atmospheres

Hydrochloric acid and ammonia are examples of chemicals that can build up a corrosive atmosphere. Corrosive means that the substance is harmful to the skin and eyes, and it reacts to metal.

Toxic Atmospheres

Toxic atmospheres can be introduced into a confined space when a toxic chemical or gas is stored in a tank or holder producing carbon monoxide or hydrogen sulfide. Carbon monoxide can cause oxygen deficiency.

Flammable Atmospheres

Sources of ignition can create flammable atmospheres. Flames are the most common form of ignition, while electrical discharge through current or static electricity can raise the temperature to the ignition point. Beware of heat and radiation within a confined space as well.

Check for any of these hazardous atmospheres before entering a confined space. If found try and eliminate the risk or the need to enter a confined space. If that is not possible, minimize the risk of entering by taking appropriate steps like wearing PPE or not introducing ignition sources into an area.

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