What must personnel do during an inspection of self-contained breathing apparatus?

During an inspection of self-contained breathing apparatus (SCBA), donning the face piece, checking the exhalation valve operation, and verifying the hydrostatic test date are critical steps in ensuring the equipment's functionality and safety.

Donning the face piece allows the user to ensure that it fits securely and is comfortable, which is vital for effective use in an emergency. The exhalation valve operation test ensures that the valve is functioning properly—if it fails, it could lead to a buildup of carbon dioxide inside the face piece or an insufficient oxygen supply. The hydrostatic test date is equally important as it indicates whether the cylinder is still within the safe period of use; SCBA tanks must pass hydrostatic tests periodically to prove they can handle the pressure without risk of rupture.

While checking battery status, inspecting for wear and tear, and reading the manufacturer's manual are important aspects of SCBA maintenance and training, they do not encompass the hands-on evaluation of the SCBA's operational readiness and safety features in the same immediate and practical way as the actions mentioned in the correct answer choice. Thus, those steps are essential for ensuring that firefighters can rely on their breathing apparatus when needed the most.