What is the proper procedure when leaving a structure to change an air cylinder?

• A. Exit Alone
• B. Exit with Assigned Buddy
• C. Notify Dispatch Only
• D. Remove SCBA Inside

Answer: (B)

The essential idea here is using the buddy system to stay safe when working in a hazardous environment with a breathing apparatus. Exiting a structure to change an air cylinder should be done with an assigned buddy because a partner outside the entry can monitor you, assist with the air change if your cylinder runs low or a problem arises, and maintain accountability for everyone who went inside. This pairing helps ensure you’re never alone in a dangerous situation and that help is ready if something goes wrong.

Why this is the best approach: having a buddy outside means your air supply can be monitored and managed without leaving the hazard zone unsecured. It also preserves team integrity—both you and your partner know who is inside or outside, which is crucial for rapid rescue or escalation if conditions change.

Why the other options aren’t as safe: exiting alone removes the immediate safety net if you encounter equipment trouble or a sudden need for assistance; simply notifying dispatch doesn’t provide real-time, on-scene support or accountability; removing the SCBA inside exposes you to unbreathable air and potential hazards while you’re still in the structure.

So, the correct practice is to exit with an assigned buddy.