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DISTRIBUTION RECOVERY STREAM Water System Schematic. Flow started here between 1700hrs and 2100hrs, 28 th July Initial flow of 80Ml/d building to 120Ml/d over following 12 hours. Trunk Main. District Metered Area (DMA) (110). (87km). Main (1883km). Treatment works. Valve. River.
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DISTRIBUTION RECOVERY STREAMWater System Schematic • Flow started here between 1700hrs and 2100hrs, 28th July • Initial flow of 80Ml/d building to 120Ml/d over following 12 hours Trunk Main District Metered Area (DMA) (110) (87km) Main (1883km) Treatment works Valve River Service Reservoir (15) Approx 1300 Properties DMA Valve Meter DMA DMA Distribution Recovery Plan Update 09:00 29th July 2007
Estimated Recharge Timetable All timings are estimated. All timings are liable to vary due to the unique nature of a 2,000km pipeline. Distribution Recovery Plan Update 09:00 29th July 2007
Issues influencing timing • Demand levels – filling loft tanks, taps left running, washing backlog, flood washdown, etc • Operational issues in recharging – airlocks • Mechanical failure of distribution assets – valves, pressure control valves, booster pumps • Not been run for a while, may have flood damage • Leakage • system has been discharged • floods will have caused ground movement • Mythe production – mechanical / electrical / process failure Distribution Recovery Plan Update 09:00 29th July 2007