Latvian utility Latvenergo seeks bids to design and build a reserve spillway to help pass the design flood of the 868.5-MW Plavinas hydroelectric project on the Daugava River. Bids are due August 10.
Latvenergo said the existing spillway capacity at Plavinas of 8,640 cms is insufficient to divert the design flood of 12,600 cms, requiring additional discharge capacity of 3,960 cms.
The proposed gated spillway would be located on the right bank, crossing the existing embankment dam. It would include an approach channel, weir with four gates, a chute, and a stilling basin.
The utility seeks bids for site investigations, hydraulic model tests, detailed design, supervision of construction, and construction works during guarantee period.
In 2006, Latvenergo awarded a 1.5 million euro (US$1.8 million) contract to Electrowatt-Ekono Ltd., in cooperation with Fortum Service, and two local partners, to provide owner’s engineering services for the Plavinas reserve spillway project. Over the past 10 years, Latvenergo has been refurbishing Plavinas, which was commissioned in 1965-1966 100 kilometers east of Riga. (HNN 3/15/07)
Tender documents may be obtained from the address below for 100 lats or 150 euros (US$202) by bank transfer to JSC Latvenergo (Unified registration No. 40003032949), VAT Payer’s Code LV40003032949, Bank: JSC SEB Latvijas Unibanka, Vecriga Branch, Code: UNLALV2X, Account No.: LV 24UNLA0001000221208, Tender: Design for Construction of Plavinas HPP Reserve Spillway.
Bids are due by noon August 10. For information, contact JSC Latvenergo, Project Manager Antra Ozola, Pulkveza Brieza St. 12, Riga, Latvia, LV-1230; (371) 67728248, 67728269; Fax: (371) 67728883; E-mail: indra.tukuma@latvenergo, email@example.com.