Transcription of CHAPTER 3 WATER SUPPLY SYSTEM - JICA
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CHAPTER 3 WATER SUPPLY SYSTEM - JICA
CHAPTER 3 WATER SUPPLY SYSTEM 3 - 1 CHAPTER 3 WATER SUPPLY SYSTEM General Components of the Priority Projects The stage I of the augmentation of Salaulim WATER SUPPLY Scheme (WSS) was selected as the priority projects from the urgency point of view because it has the most serious problem for WATER shortage, as described in Volume II Main Report: Master Plan. The project scale was set based on a careful examination of WATER demand, SUPPLY capacity, raw WATER availability and the PWD s financial capabilities. The selected priority projects are described below: Expansion of the Salaulim WATER Treatment Plant (WTP) by 100,000 m3/day, resulting in a total capacity of 260,000 m3/day Rehabilitation and Improvement of the Existing Salaulim WTP, which has a production capacity of 160,000 m3/day Construction of a 20,000 m3 Master Balancing Reservoir (MBR) at Sirvoi rock hill Installation of km of Transmission Mains, 150 to 1400 Rehabilitation of km of the Existing Transmission Mains, 1200 Construction of six Reservoirs Construction of five Pumping Stations Replacement of 4 units of Pumping Equipment at Verna Pumping Station Improvement of Operation and Maintenance, including installations of flow meters, float valves and flow control valves and improvement of safety
The transmission system design is mainly based on the “Manual on Water Supply and Treatment, Third Edition – Revised and Updated, CPHEEO, MOUD, May 1999”. ... For circular conduits, the formula is restated as hf = 10.666 C-1.85 D-4.87 Q1.85 L Where, V = Velocity (m/s) C = Hazen-Williams coefficient R = Hydraulic Radius (m)
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