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Dam and irrigation project on Pa Sak River in Thailand The Thai government’s Royal Irrigation Department has taken delivery of six vertical mixed flow pumps, valued at US 6792,000, for the Pa Sak River Dam project. The Flowserve pumps will be used in the 19.2 billion baht (US0440 million) irrigation, environmental rehabilitation and development program, which aims to minimize drought and flood problems in the 3.65 million acre Pa Sak River basin area, located just to the north of Bangkok.
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The Cholasidh Dam on the Pa Sak River is an inte- gral part of the project. The earth filled dam creates a reservoir with a capacity of 960 million cubic metres (25 trillion gallons of water), which will provide flood relief and an adequate water supply for the conurbations of Lop Buri and Saraburi and the neighbouring Chao Phraya River area.
Flowserve won the contract and supplied vertical circulating pumps of type 50 SKXH for the project. These single-stage models come with semi-radial . ..-._.. . . ^.“_..._. ._ -. ._“_...____.~~i
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The Cholasidh dam on the Pa Sak river in Thailand is part of a massive government-sponsored irrigation, environmnetal rehabilitation and development program.
flow bowls and will be installed on irrigation, drainage or flood control duties as required. The SIX pumps are equally divided into two types - Group A and Group B. The three Group A pumps will take water from the reservoir and transport it along a 6.2km-long (3.8 mile) steel pipeline, measuring 1.8m (6ft) in diameter, to provide irrigation to 1 1,720 acres of higher ground. A 900kW (1200hp) motor will drive this process at 600rpm. The Group A pumps will meet an initial duty point of 42m (138ft) of total differential head, at 6,325 m3/h of flow (27,800gpm).
The remaining three Group B pumps will be deployed on a similar duty, taking water from the reservoir and transporting it along a different, 7.9km-long steel pipeline (4.9 miles) to ensure adequate irrigation for 1 1,400 acres of land. The Group B pumps will provide 6,225 m3/h of flow (27,40Ogpm), at 47m (154ft) of head and will be driven by motors rated at 1,OOOkW (1,350hp).
The sale and supply contract was handled by Flow- serve Corporation’s Pump Division in Dallas, Texas, USA. The pumps will begin operations later this year.
WORLD PUMPS May 2003
