What type of extinguisher is appropriate for a class A fire involving solids?

Class A fires involve combustible solids, such as wood, paper, textiles, and some types of plastics. The recommended extinguishing agents for these kinds of fires include water, foam, and dry powder extinguishers.

Water is particularly effective for Class A fires, as it cools the burning material and prevents re-ignition. By soaking the burning solids, water removes the heat from the fire, which is necessary to sustain combustion.

Foam extinguishers, while primarily designed for flammable liquids, can also be used on Class A fires. They work by forming a blanket over the material, smothering the fire and cooling the surface to break the combustion cycle.

Dry powder extinguishers, which are versatile, can also be used on Class A fires. They work by interrupting the chemical reaction occurring in the fire and are effective on a variety of fire classes, including Class A.

Since all three types of extinguishers—water, foam, and dry powder—are suitable for extinguishing Class A fires, selecting all of the above is appropriate. This broad range of options ensures that crew members can effectively respond to fires involving solid materials, enhancing fire safety preparedness on board.