What must be done to a PED that has just been extinguished before placing it in a containment bag?

The correct course of action for a Portable Electronic Device (PED) that has just been extinguished is to cool it before placing it in a containment bag. Cooling the device helps to ensure that any residual heat does not pose a risk of reignition or further hazard after it has been extinguished. This step is crucial for handling the device safely and effectively preventing any continuation of thermal events while ensuring that all safety protocols are adhered to.

Proper cooling techniques, such as pouring a non-alcoholic liquid on the device, help to reduce its temperature more rapidly and minimize the danger associated with transporting it. This mitigates any risk of thermal injury and ensures that safety measures are taken seriously when dealing with potentially hazardous situations related to electronic devices.

Other options outlined do not adequately address the immediate need to ensure safety and prevent further incidents with the device. Leaving the device at the scene could pose ongoing risks, while a thorough inspection may not be necessary or practical at that moment. Immediate disposal is also not the most appropriate action, as proper cooling and containment are the priorities following the intervention.