What must be considered when using portable extinguishers?

When using portable extinguishers, it is crucial that they are rated for the specific fire hazards present in the area where they are located. This ensures that the extinguisher can effectively combat the types of fires that may occur, such as those involving flammable liquids, gases, or electrical equipment. Each extinguisher has a designated class rating that corresponds to certain fire classifications; for instance, a Type B extinguisher is designed for flammable liquids, while a Type A is for ordinary combustibles. Therefore, matching the extinguisher to the potential hazards is essential for effective fire safety and response.

Considering the other options, hiding extinguishers from view is contrary to safety practices, as they need to be easily seen and accessed in an emergency. Extinguishers should be placed in locations that are safe and not directly exposed to hazards, ensuring they are operational when needed. Additionally, placing them in any random area could lead to critical moments of not finding them in emergencies, which undermines their purpose.