How do you interpret a fire extinguisher's rating and when should it be serviced?

How do you interpret a fire extinguisher's rating and when should it be serviced?

• A. Rating indicates the fire class it can combat; inspect regularly (monthly) and service according to manufacturer; replace after use or expiry.
• B. Rating is the color only; service never.
• C. Rating indicates the weight; service every 5 years.
• D. Rating indicates the brand; service only when damaged.

Answer: (A)

The rating on a fire extinguisher tells you what kinds of fires it is designed to fight—typically the fire classes such as ordinary combustibles, flammable liquids, and electrical fires (ABC extinguishers cover multiple classes). It doesn’t indicate color, weight, or brand. Because the rating shows what fire types an extinguisher can handle, you choose and rely on extinguishers appropriate for the risks on board, and you replace after use or when the expiry date is reached. Extinguishers should be checked monthly for accessibility, intact tamper seals, and a charge shown in the operable range on the gauge. They should be serviced according to the manufacturer’s instructions, with professional servicing and hydrostatic testing at the specified intervals. After any discharge or when the expiry date passes, replace or recharge promptly.