Which PBE has a duration of 10 seconds?

Which PBE has a duration of 10 seconds?

• A. Windo blue
• B. HAFEX
• C. AIR Liquide PBE
• D. SCOTT AVOX PBE

Answer: (B)

The key idea here is understanding what “duration” means for a PBE. It’s the amount of breathing air you get from the hood after you activate it—the time you can stay protected while you work your way to safety. In this question, the model that is specified as having a 10-second duration is the one designed for a very brief, quick-entry situation. That brief window is what the 10 seconds refers to, making it the best match for the requirement in the question. The HAFEX PBE is the model described with that short, 10-second endurance, which is why it’s the correct choice in this context. The other PBE options are designed for much longer protection—lasting minutes—so they do not fit a 10-second duration criterion. When studying, focus on remembering the endurance specs for each model, since that’s what differentiates them in questions like this.

The key idea here is understanding what “duration” means for a PBE. It’s the amount of breathing air you get from the hood after you activate it—the time you can stay protected while you work your way to safety. In this question, the model that is specified as having a 10-second duration is the one designed for a very brief, quick-entry situation. That brief window is what the 10 seconds refers to, making it the best match for the requirement in the question.

The HAFEX PBE is the model described with that short, 10-second endurance, which is why it’s the correct choice in this context. The other PBE options are designed for much longer protection—lasting minutes—so they do not fit a 10-second duration criterion. When studying, focus on remembering the endurance specs for each model, since that’s what differentiates them in questions like this.