The Hindu Business Line

Kalesh­waram project: Un­der­ground pump­ing be­gins; set to go live to­mor­row

- V RISHI KU­MAR India

The un­der­ground pump­ing sta­tions of the Kalesh­waram Lift Ir­ri­ga­tion Project (KLIP) on the river Go­davari in Te­lan­gana have suc­cess­fully com­pleted the wet run. Chief Min­is­ter K Chan­drashekar Rao is slated to in­au­gu­rate the pump house on Wed­nes­day.

Con­sid­ered an en­gi­neer­ing marvel, Lax­im­pur Un­der­ground Pump­ing Sta­tion (LUPS), con­structed by Megha En­gi­neer­ing and In­fra­struc­tures Ltd (MEIL), forms part of the mega ir­ri­ga­tion project, named af­ter God­dess Gay­a­tri.

The wet run be­gan with switch­ing-on of the fifth ma­chine in LUPS on Sun­day night. It pumped up 3,000 The project is ex­pected to trans­form dry tracts in Te­lan­gana and en­able live stor­age of wa­ter in reser­voirs through­out the year

cusecs of wa­ter to a height of 111 me­tres to be evac­u­ated into the Mid-Manair through the grav­ity canal.

About 98,85,303 cu­bic feet of wa­ter were pumped up on Sun­day, equiv­a­lent to 28 crore litres of wa­ter.

The project is ex­pected to trans­form the parched dry tracts of Te­lan­gana and en­able live stor­age of wa­ter in reser­voirs through­out the year in the Go­davari River belt.

This un­der­ground pump house en­ables re­verse pump­ing of Go­davari wa­ter, thereby re­ju­ve­nat­ing the hith­erto dry ar­eas en-route.

B Srini­vas Reddy, Direc­tor, MEIL, said, “This is an ex­tra­or­di­nary un­der­ground pump house, 470 feet be­low the ground with twin tun­nels and the largest surge pools in the world. This is an ul­tra­mega project in the world, hav­ing seven mo­tors, each hav­ing a ca­pac­ity of 139 megawatts. Th­ese mo­tors can to­gether lift 3 TMC of wa­ter per day.”

“This is the true ex­am­ple of ‘Make in In­dia’ as th­ese gi­gan­tic mo­tors are de­vel­oped in the coun­try with the com­pu­ta­tional fluid dy­nam­ics tech­nol­ogy,” he said. The KLIP project in­cluded con­struc­tion of elec­tri­cal in­fra­struc­ture with 3,057 MW ca­pac­ity that com­prises six 400KV and 220KV sub­sta­tions, trans­form­ers and 260 kilo­me­tres of trans­mis­sion lines and 7 kilo­me­tres of 400 KV un­der­ground ca­ble work.

It has pump­ing ca­pac­ity of 2 TMC of wa­ter per day. Mas­sive un­der­ground cav­erns have been ex­ca­vated to con­struct the pump house and surge pools to lift in­com­ing wa­ter from un­der­ground.

The cav­ern is 140 me­ters deep, 25 me­ters wide and 65 me­ters in high. Its Ser­vice Bay is lo­cated at 221 me­tres be­low the ground, while the pump bay is at 190.5 me­tres and trans­former bays are at 215 me­tres with its con­trol room at 209 me­tres un­der­ground. The pump house has twin tun­nels, built side-by-side — 4,133 me­tres long with a di­am­e­ter of 10 me­tres. As each mo­tor re­quires 139 MW of power to run, a 160 KVA ca­pac­ity pump trans­former along with com­pres­sor units have been set up suc­cess­fully.

Three surge pools have been con­structed to store enough wa­ter. Erec­tion of tur­bine pumps at a depth of 138 me­tres un­der­ground is an­other unique fea­ture of the project as each pump weighs around 2,376 met­ric tonnes.

This pump house forms part of the mega ₹80,500 crore project on river Go­davari aim­ing to trans­form Te­lan­gana from a dorught-prone one to drought-proof State.

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