When a trained personnel member is available, what is the maximum surface area for which portable fire extinguishers should not be the only protection against flammable liquids?

When it comes to the use of portable fire extinguishers for flammable liquids, the maximum surface area that can be effectively managed only with these extinguishers is crucial for ensuring safety in fire situations. In this context, training guidelines indicate that when a trained personnel member is present, the effective range for portable fire extinguishers is a radius of 20 feet.

This distance is determined because flammable liquid fires can escalate quickly and require a rapid response with the right fire suppression methods. Fire extinguishers can provide immediate protection within this radius, but beyond this distance, the risk of fire spread increases significantly, necessitating additional fire safety measures such as fixed suppression systems or fire blankets.

Therefore, having this boundary of 20 feet ensures that the trained personnel can respond effectively and safely, while also maintaining a perimeter where the situation can be managed without overwhelming danger. It showcases the emphasis on both quick access to fire control equipment and the understanding of potential risks associated with flammable liquids.