How often must fire extinguishers be inspected to ensure safety?

Fire extinguishers must be inspected once a month to ensure they are in proper working order and ready for use in an emergency. This monthly inspection involves checking that the extinguishers are accessible, in their designated places, and that there are no visible signs of damage or discharge. The inspection also includes verifying that the pressure gauge is in the green zone, ensuring that the extinguisher is fully charged.

Regular inspections are crucial because they help identify potential issues before they become serious problems. Monthly checks are a part of the maintenance routine mandated by National Fire Protection Association (NFPA) standards, which emphasize the importance of keeping fire safety equipment in optimal condition for effectiveness during an emergency.

In contrast to the other choices, which suggest inspection frequencies that are either too infrequent or not in alignment with recommended guidelines, the once-a-month standard strikes an effective balance between frequency and practicality in maintaining fire safety equipment.