What indicates that the PBE is inflating with oxygen?

The correct indication that the PBE (Protective Breathing Equipment) is inflating with oxygen is a green flashing light. This visual signal serves as an alert to the user that the oxygen is actively flowing into the PBE, which is crucial for ensuring that the equipment is ready for use in an emergency situation. The green flashing light effectively communicates that the device is functioning properly and that oxygen is being delivered as needed. It is important for maintenance personnel and users to recognize this signal in order to ensure that the equipment is in optimal condition when needed.

Other signals can mean different things: a solid green light typically indicates that the unit is operational but may not provide specific information about the inflation status; a red solid light usually signals a malfunction or low oxygen status, while a blue blinking light isn't commonly associated with PBE operation in the context of safety protocols. Understanding the specific meanings of these indicators is essential for effective emergency response.