Water Distribution · From Plant to Tap
What Is Fire Flow?
Fire flow can create a large, rapid demand that changes pressure, tank levels, pump operation, and flow direction. The water system must coordinate with fire agencies using system-specific plans and known capabilities.
During an event, watch zone pressure, storage, pump availability, alarms, valve configuration, and water-quality risks created by unusually high velocity or low pressure. Communications should identify the location and active hydrants.
Opening additional hydrants without coordination can reduce pressure elsewhere or pull sediment into suspension. Operators should not improvise a flow target or change zone boundaries outside the emergency plan.
If a fire event causes pressure to approach the system response threshold, report the verified condition and follow the emergency operating plan. Keep enough pressure to fight the fire, and watch for contamination if pressure drops.
Key point: Opening extra hydrants without coordination can drop pressure elsewhere and stir up sediment. Follow the emergency plan, not an improvised flow target.
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Water Distribution Fundamentals
This page comes from the course. It covers mains and valves, storage, pumps and pressure, water quality, backflow, main work and daily operations, one step at a time, with short knowledge checks and a certificate of completion.
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