Inerting in confined spaces is best described as:

Inerting in confined spaces is best described as:

• A. Purging with an inert gas to displace the atmosphere.
• B. Purging with oxygen.
• C. Purging with hot air.
• D. Introducing solvent vapors.

Answer: (A)

Inerting a confined space means creating an atmosphere that cannot support combustion by replacing the air with an inert gas, such as nitrogen. Purging with an inert gas displaces oxygen and any flammable vapors, greatly reducing the chance that a spark or heat source could ignite a flammable mixture inside. That’s why purging with an inert gas to displace the atmosphere is the appropriate description. Purging with oxygen would increase the oxidizer availability and could make ignition more likely. Hot air adds energy and doesn’t reduce flammable vapors effectively. Introducing solvent vapors adds fuel to the space, increasing the explosion or fire risk.

Inerting a confined space means creating an atmosphere that cannot support combustion by replacing the air with an inert gas, such as nitrogen. Purging with an inert gas displaces oxygen and any flammable vapors, greatly reducing the chance that a spark or heat source could ignite a flammable mixture inside. That’s why purging with an inert gas to displace the atmosphere is the appropriate description.

Purging with oxygen would increase the oxidizer availability and could make ignition more likely. Hot air adds energy and doesn’t reduce flammable vapors effectively. Introducing solvent vapors adds fuel to the space, increasing the explosion or fire risk.