When is it appropriate to use SCBA in a confined space?

Using SCBA in confined spaces is appropriate primarily when atmospheric hazards are present. Confined spaces often pose significant risks, such as low oxygen levels, toxic gas accumulation, or other hazardous conditions that can endanger a person's health. SCBAs are designed to provide breathable air from a compressed tank to protect users from these dangerous environments.

In situations where there is no immediate likelihood of hazardous atmospheric conditions—such as a well-ventilated area—the necessity for SCBA may be less critical. Training exercises may also employ SCBAs to familiarize users with equipment and procedures, but this does not represent their use in actual, dangerous situations. Therefore, the correct scenario for SCBA use emphasizes the presence of atmospheric hazards as the primary criterion for ensuring safety in confined spaces.