What should be done immediately if a fire extinguisher is used?

When a fire extinguisher is used, it is crucial to report it to the responsible authority for maintenance. This step is essential because a fire extinguisher that has been used, even if only partially, may no longer be effective in the event of a subsequent fire. Reporting its use allows for proper inspection, refilling, or replacement, which ensures that safety equipment remains functional and ready for any future emergencies.

This process also helps maintain compliance with safety regulations and ensures that the fire safety protocols of the facility are upheld. While putting the extinguisher back in its original location may seem practical, this alone does not address the need to restore its capability. Similarly, replacing it with a new one could be unnecessary if a refill is possible, and informing the local fire department is important in certain contexts, but it is not the immediate next step that addresses the functionality of the extinguisher itself. Thus, reporting to the responsible authority is the most appropriate and responsible action following the use of a fire extinguisher.