How long will a 15 lbs CO2 extinguisher last under use?

A 15 lbs CO2 extinguisher typically lasts about 45 seconds when used continuously at full discharge. This duration is essential for effectively putting out fires, as it provides sufficient time to direct the extinguisher's contents at the base of the fire while ensuring the user can maintain control and aim accurately.

When discharging a CO2 extinguisher, it's important to remember that the operator needs to maintain a steady discharge to effectively suffocate the fire, which is achieved through the displacing nature of carbon dioxide. The 45 seconds allows for a balance between sufficient discharge time and the practical considerations of maintaining a firm grip on the extinguisher and directing the flow at the flames.

Other durations listed do not align with typical discharge characteristics, as extinguishers of this type often have specific operational times that are critical for training and safety protocols. Understanding these durations helps in preparing for fire response scenarios effectively.