• AWWA ACE54480
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AWWA ACE54480

  • Preventive Maintenance of Pumping Equipment: Water District No. 1 of Johnson County, Kansas
  • Conference Proceeding by American Water Works Association, 06/01/2001
  • Publisher: AWWA

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WaterOne, (Water District No. 1 of Johnson County, Kansas), has experienced continuous and rapid growth, from an initial 5 mgd ground-water facility in 1957 to the current high-tech 165 mgd surface-water facility today. WaterOne services more than 371,020 people in 15 cities and wholesales to one rural water district. The service area now encompasses more than 265 square miles, utilizing 12 distribution pumping stations and 6 elevated tanks. WaterOne currently utilizes vertical turbine pumps in the supply and treatment facilities and, with few exceptions, horizontal split-case pumps in the distribution system. The size of pumping units range from less than .5 mgd and 20 hp to more than 20 mgd and 2500 hp with a mix of both constant speed and variable speed drives. As WaterOne continued to grow, the Maintenance Department expanded from a standard preventative maintenance approach to maintaining major pumping units to a holistic approach to maintaining these critical units. This approach focuses on keeping the pumps healthy rather than on emergency repairs. The rapidly growing service area placed a lot of stress on keeping pumping units on-line. By using tight specifications written for low vibration for all new pumping units, applying the same expectations to all rebuilds, and maintaining the units to these critical specifications, WaterOne has dramatically lengthened the service life of the pumps. This did not happen overnight, it was a lengthy process of trial and error to get from run to failure maintenance philosophy to where WaterOne's maintenance philosophy is now. Even now, WaterOne's maintenance practices are in a constant state of learning and evaluation. Technology is constantly changing and it is the task of the Maintenance Department to learn to apply these new technologies to WaterOne's benefit.

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