Which action is appropriate when a Class Bravo toxic gas release is detected?

• A. Evacuate the space and perform desmoking
• B. Ventilate while remaining inside
• C. Don respirator and call for help only
• D. Ignore and continue operations

Answer: (A)

The main idea is to protect people first when a Class Bravo toxic gas release is detected. Toxic gases pose immediate health risks, so the priority is to remove anyone from the affected area and start eliminating the contaminant. Evacuating the space prevents exposure, and performing desmoking helps purge residual gas and smoke, making the area safer for any necessary re-entry later. Ventilating while you stay inside keeps you at risk and doesn’t remove people from danger, while relying on a respirator or calling for help alone doesn’t eliminate the hazard or protect others who might be nearby. Ignoring the release is unsafe and contrary to procedure.