What indicates that a 5 lbs CO2 bottle has been used?

When a 5 lbs CO2 bottle has been used, it is crucial for safety protocols to have clear indicators that notify users of its status. The correct answer, which includes both an audible alarm and a visual beacon, is effective because it provides multiple forms of alert.

The audible alarm serves as a sound cue, drawing immediate attention to the fact that the CO2 bottle has been discharged, which can be particularly useful in an emergency situation where visibility or close inspection may be compromised. Meanwhile, the visual beacon offers a simultaneous visual alert that can be seen from a distance, ensuring that personnel are aware of the status of the CO2 bottle even if they cannot hear the alarm.

Having both types of indicators enhances overall safety and communication in situations where a CO2 discharge may impact firefighting efforts or other emergency responses. This dual-alert system allows for quicker response times and better decision-making in critical situations.