What is the minimum engine pressure needed for a single CFEMS high-rise pack operating on a standpipe at grade?

The minimum engine pressure needed for a single CFEMS (Compact Firefighting Equipment Management System) high-rise pack operating on a standpipe at grade is 65 psi. This specification is crucial because it ensures that the water can reach the higher elevations typically associated with high-rise buildings.

When operating a high-rise pack, it is essential to provide enough pressure to overcome both the vertical distance that the water must travel and any friction losses that occur in the standpipe system. The 65 psi requirement generally accounts for these factors, ensuring a reliable supply of water to effectively combat fires in high-rise structures.

In practical terms, if the engine pressure is set below this threshold, firefighters may not achieve adequate flow rates at the higher floors, which can severely diminish the effectiveness of firefighting operations in a high-rise scenario. Operating at or above 65 psi not only meets safety and operational guidelines but also enhances the overall performance of the firefighting mission.