How should hazard areas involving Class B fires in flammable liquids that are not manned all of the time be protected?

A hazard area involving Class B fires, which are associated with flammable liquids, requires specific protection measures due to the high risk of fire and the potential for rapid escalation of a fire incident. Fixed systems, such as fire suppression systems specifically designed for Class B hazards, are ideal for these settings as they can continuously monitor and respond to fire threats without requiring constant human presence.

Fixed systems can include sprinklers designed for flammable liquids, foam suppression systems, or other automatic fire suppression technologies that activate when a fire is detected. The advantage of using fixed systems is their ability to provide immediate and effective response to a fire, minimizing damage, and enhancing safety in areas that are not manned all of the time. This is crucial because, during times when the area is unoccupied, a fast and automatic response is essential to mitigate hazards.

In contrast, while portable extinguishers can be useful for small fires or emergencies when personnel are present, they may not be practical or effective in an unmanned area where fire can spread quickly. Similarly, relying solely on manual fire alarms or increased personnel training would be insufficient in preventing or controlling a fire situation in a high-risk environment where flammable liquids are present. Hence, the use of fixed systems is the most effective