A: There are over one thousand fire hydrants within the Ithaca Fire Department's response district. Each year, during the warmer months, the fire department "flow tests" selected hydrants within our fire district. Our objective is to flow test one hydrant "system" each year. Any particular hydrant will be tested at least once every ten years. By doing this, we are accomplishing many things: (1) We determine the flow potential in gallons per minute based on data we collect including static and residual pressures as well as a pitot reading (velocity pressure). (2) We exercise all the moving parts on the hydrant. In doing this, we occasionally identify problems with the hydrant which could adversely affect water supply during fire fighting operations. (3) We inspect, lubricate, and properly secure the caps so that they will function properly when needed. (4) We color code the hydrants based on their flow potential in accordance with national standards. Doing this helps us recognize what a particular hydrant's capabilities might be when used at a fire. (5) We flush the hydrant thoroughly which helps remove mineral build-up from the water supply mains. In addition, by flushing the hydrant we occasionally find a large rock or other foreign material which might have had a significant impact on fire fighting operations. As you can see, we do a lot more than just "flush" the hydrants. In addition to flow testing hydrants, we perform annual maintenance on every hydrant each year. Annual maintenance does not include flow testing. Instead, we exercise the hydrant's moving parts, lubricate the threads, verify proper drainage, check for proper color-coding, paint as necessary, etc. |