Georgia seeks civil works, equipment for 125-MW Vardnili 1, 40-MW Vardnili 2

TBILISI, Georgia 1/27/12 (PennWell) -- Georgia project operator Engurhesi Ltd. invites applications for pre-qualification to provide civil works, electrical equipment, monitoring, and hydro-mechanical works for two projects in the 245-MW Vardnili hydropower cascade on Georgia's Enguri River. Responses to four solicitations are due February 15.

Engurhesi has been pursuing rehabilitation of the 1,250-MW Enguri project and the Vardnili cascade -- 125-MW Vardnili 1 and Vardnili 2, 3, and 4 of 40 MW each -- for several years with funding from international lenders. The project operator recruited firms in November to build access roads and contractor facilities for the rehabilitation work.

Enguri and the Vardnili cascade were built in the 1970s as part of the same scheme. Three of the Vardnili plants were destroyed during civil war leaving the water channel without maintenance for 15 years.

In the first of four solicitations, Engurhesi invites applications for pre-qualification to carry out civil works at Vardnili 1 dam and waterways. Work, to be performed over 18 months, includes rehabilitation of the diversion channel, reinforced-concrete lining of the spillway channel, rehabilitation of the initial part of the tailrace channel, and stabilization of a landslide slope of the downstream channel with reinforced concrete structures.

In the second solicitation, Engurhesi invites applications for pre-qualification to refurbish and modernize electrical equipment of Vardnili 1. Work, performed over 18 months, includes replacement of power supply and control cables, the control and protection system, generator circuit breaker cubicles, switchyard equipment, generator cooling system, and lighting system. Other work includes installation of an emergency diesel generator, static excitation systems on Units 2 and 3, a hydro-mechanical equipment measuring system, generator monitoring system, autotransformers, additional submerged pumps, and additional auxiliary pumps.

In the third solicitation, Engurhesi invites applications for pre-qualification to supply and install a monitoring system on Vardnili 1 Dam. Work, over six to eight months, includes drilling of piezometer and inclinometer boreholes; supply and installation of leakage measuring equipment, a meteo station, and a reservoir level monitoring device; and upgrade of a geodetic network.

In the fourth solicitation, Engurhesi invites applications for pre-qualification to rehabilitate hydro-mechanical equipment at Vardnili 1 and Vardnili 2. Work, over 18 months, includes:
o Vardnili 1: hydro-mechanical equipment on draft tubes, power intake, and spillway; rehabilitation of hydro-mechanical equipment on a bottom outlet; and a penstock including corrosion protection, sealing of expansion joint, and supporting rings;
o Vardnili 2: hydro-mechanical equipment on spillway.

Pre-qualification documents for each solicitation may be obtained from the address below in hard copy or electronically in pdf format. The pre-qualification documents are to be completed and submitted to the address below by 4 p.m. February 15.

For information, contact Project Manager Malkhaz Tskvitishvili, Engurhesi Ltd., Project Implementation Unit, 8 Politkovskaia St., 2nd Floor, Tbilisi 0186 Georgia; (995) 32-2188011; Fax: (995) 32-2188022; E-mail: malkhaz@caucasus.net.



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