Hyderabad: The mega Kaleshwaram Lift Irrigation Scheme (KLIS) is all set to reach the first of the major milestones in its implementation plans. Project authorities released water on Wednesday from the Yellampalli project to facilitate the wet run of the pumping station in package 6 of the multi-crore project intended to irrigate over 36 lakh acres in the State, half of it being a part of stabilisation.
A senior official of the irrigation department said the trial run of the pumps will be conducted with full water load in the surge pool either on April 23 or 24. The surge pool, which is considered to be the largest of all the Indian lift irrigation projects, will be filled only up to ten per cent of its capacity before conducting the primary leakage tests.
If everything goes normal, it will be filled up to 25 per cent of its gross capacity to conduct the second round of inspection. About 0.20 tmc of 8.6 tmc of water available in the project was sought to be drawn through the approach channel and the forebay of the Yellampalli project. It will be routed through the 9.5 km long twin tunnel for impounding its surge pool to its maximum level.
The underground pump house complex has seven pumps of 126 mw capacity each and they are meant to lift water vertically some 110 metres up on a 45 degree gradient to the delivery cistern. They have a combined discharge capacity of 3,200 cusecs. The pumps, which had successfully completed the dry run process months ago, will undergo the final wet run process under the supervision of a team of top irrigation officials.
Four of the seven pumps are ready for the mandatory feat while three more will be ready by the end of May. Civil works on pump No 7 are expected to be completed soon. It will be in commissioning stage by the end of May next.
A task that was so arduous and complex to have been accomplished as per schedule, said KLIS Engineer in Chief N Venkateswarlu, who formally released the water by lifting the crest gates of the project into the newly constructed gravity canal.
KLIS Package VI, which involves an overall cost of Rs 4,961 crore, will provide vital connectivity from the lift irrigation scheme to Nandimedaram project, the halfway point to the Mid-Manair project, from where the water flow branches off in the designed directions to irrigate over 37 lakh acres.
The KLIS Engineer in Chief and other officials of the project performed formal puja at the forebay point before releasing water into the gravity canal. Venkateswarulu said that not even a drop of water drawn from Yellampalli would be wasted in any manner. The water would be retained in the delivery system. Water supply would be given to the designed ayacut at least partially from the next monsoon.