What safety requirement is essential when using a PAPR?

• A. It requires no training
• B. It requires a power source
• C. Fit testing is required
• D. It cannot be used indoors

Answer: (C)

The essential safety step is to verify that the PAPR fits properly so it actually provides the intended protection. If a tight-fitting facepiece is used, a fit test confirms there are no leaks around the edges when the wearer talks, moves, or facial features change. This ensures the air the wearer breathes is truly filtered and that contaminated air isn’t slipping in through gaps. Training on how to use and maintain the PAPR is important, and the device needs a power source to operate, and it can be used indoors with proper procedures, but the key safeguard tested here is confirming a proper fit through a fit test.