SJVN yet to conclude hydro testing, falls behind concretization targets at Rampur HEP

SJVN has been lagging behind the targets set for the generator barrel concreting at units 1, 2 and 6 of its 412 MW Rampur hydro

electric project (HEP) on account of delays faced in hydro testing of spiral casing in each of these units.
8According to the developer, zero progress was achieved during the previous month for the concreting works in units 2 and 6, as opposed to the

targets of 25% and 75%, respectively. The situation was much better at unit 1, which fell short of the February target by merely 2%.
8The critical activities for unit 6 are now expected to commence in May this year once the requisite hydro testing has been carried out.

Meanwhile, the completion of hydro testing in unit 2 has been scheduled for the fourth week of June 2012.
8Alongside this, it has been observed that the cumulative erection for penstock steel liner of unit 6 has suffered due to slope failure above

the PWD road. Against the target of 752 m, the cumulative progress, so far, is 508 m.
8Other reasons that have been identified for causing this slow progress are non availability of fronts at site, labor strikes, difficult

weather conditions and shortage of steel.
8For reference purposes, the Rampur HEP envisages diversion of water from the out-fall arrangement of the existing Nathpa Jhakri HEP of SJVNL,

through a 15.08 km long head-race-tunnel (HRT) with a diameter of 10.5 m. The project would also require an additional HRT, of 155.75 m height

and 38 m diameter.
8It involves construction of a restricted orifice-type, open-to-sky surge shaft of 38 m diameter, three pressure shafts, penstocks of 5.4

meter diameter, each, and a surface power house of internal dimensions 158 m x 34.5 m and 48 m height, to house six vertical axis Francis

turbines generating units, apiece, of 68.67 MW capacity, to utilize a tunnel discharge of 383.88 cumecs and a net head of 119.1 m.