Rehabilitation & Repair

Rehabilitation and upgrading of existing hydro plants is vital to ensure the continued reliable operation of these valuable assets, in addition to increasing global hydroelectric generating capacity.

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Latest Rehabilitation & Repair News

Dam Safety & Security

05/20/2014

Collection of articles covering safety and security of dams and civil structures for May 2014

Replacing an Aged Woodstave Penstock

05/20/2014

The 40-plus-year-old penstock supplying water to the 29-MW Rocky River pumped-storage plant was replaced with a smaller-diameter pipe that actually increases water flow to the plant, boosting power generation.

Identifying a Guide Bearing Rub Using Vibration Analysis

05/20/2014

When commissioning a hydro unit, proper use of vibration monitoring can help identify problems such as a rub on the guide bearings. Catching issues early can allow the problem to be fixed quickly, preventing units from operating inefficiently and limiting unplanned outages.

Evaluating the Hydropower Benefits of Raising a Dam

05/20/2014

Faced with level restrictions in the reservoir, the El Dorado Irrigation District commissioned a study of its El Dorado Forebay Dam to gain back lost generation from the 20-MW powerhouse. Results indicated a 10-foot raise could increase average annual revenue by 5.7% and emergency water supply by 18 times.

Corps awards engineering contract for dams, other works in Mississippi Basin region

05/19/2014

The U.S. Army Corps of Engineers has awarded a contract worth US$9 million to CDG Engineers Architects Planners Inc. to work on dams and other projects in the Mississippi Valley and the Midwest.

Tysso 2 Hydropower Plant

Alstom wins contract for Tysso 2 hydropower plant equipment

05/19/2014

Norwegian utility Statkraft has awarded a contract to Alstom to supply a new control systems and balance-of-plant equipment for the 180-MW Tysso 2 hydropower plant.

Tajikistan Map

Unit No. 1 back on line at Tajikistan's 670-MW Sangtuda 1

05/15/2014

Generating unit No. 1 at Tajikistan's Sangtuda 1 hydropower project is back in service following major repairs, operator OJSC Sangtudinskaya GES-1 has reported.

Thomson Hydropower Project

Units at Minnesota Power's 72-MW Thomson hydropower plant to be back on line soon

05/15/2014

Generation at Minnesota Power's 72-MW Thomson hydropower plant could resume early this summer, according to an update provided during the company's annual meeting of shareholders earlier this week.

Grand Coulee Hydropower Project

U.S. seeks cavitation repair at 6,809-MW Grand Coulee, 428-MW Hungry Horse hydro projects

05/15/2014

The Bureau of Reclamation seeks bids for turbine runner cavitation repair at the 6,809-MW Grand Coulee hydroelectric project in Washington and the 428-MW Hungry Horse hydro project in Montana.

Lavey Hydropower Project

Lausanne awards contract for Lavey hydropower plant control system

05/14/2014

The city of Lausanne has awarded a US$1.2 million contract to Groupe E SA to expand and adapt the control system of Switzerland's 93-MW Lavey hydroelectric project.

Summersville Dam

U.S. seeks fixed cone valve for West Virginia's Summersville Dam

05/14/2014

The U.S. Army Corps of Engineers seeks bids to supply a fixed cone valve to Summersville Dam on the Gauley River in West Virginia.

Wanapum Dam

Grant PUD releases initial report on Wanapum Dam fracture

05/14/2014

A mathematical error made during the pre-construction design of Wanapum Dam was the primary contributing factor in creating a spillway fracture discovered earlier this year, Grant County Public Utilities District said.

Ice Harbor Hydropower Project

U.S. seeks firms to refurbish thrust bearing shoes at 810-MW Lower Monumental, 603-MW Ice Harbor dams

05/13/2014

The U.S. Army Corps of Engineers seeks information on firms able to refurbish thrust bearing shoes at 810-MW Lower Monumental and 603-MW Ice Harbor dams on the Snake River in Washington.

Ozark Hydropower Project

Corps extends registration for Little Rock District industry day for hydro, other work

05/12/2014

The U.S. Army Corps of Engineers' Little Rock District has extended the deadline for registration to attend a fiscal year 2014 industry day to talk with contractors about work on its facilities and hydropower projects.

Chippis Hydropower Project

Chippis hydropower plant celebrating rehab with public tours

05/09/2014

Swiss energy company Alpiq is opening the doors of its Navizence hydropower project to the public to celebrate the completion of a four-year rehabilitation.

Trinidad Dam

U.S. seeks firms for dam monitoring instruments for Colorado's Trinidad Dam

05/08/2014

The U.S. Army Corps of Engineers seeks information on firms able to install dam monitoring instrumentation at Trinidad Dam on Colorado's Purgatoire River.

Voith Logo

Voith Hydro wins contract for Kettle hydroelectric plant generator rehab

05/08/2014

Manitoba Hydro has awarded a service contract to Voith Hydro as part of an extensive modernization of three generator units at the Kettle hydropower project in Manitoba.

Mount Coffee Hydropower Plant

Liberia again qualifies firms to rehabilitate 60- to 80-MW Mount Coffee hydro project

05/08/2014

The government of Liberia invites applications for pre-qualification to reconstruct the main dam and rehabilitate the powerhouse of the 64-MW Mount Coffee hydroelectric project in Liberia.

Grand Rapids Hydropower Project

Canada utility seeks switchgear work at 479-MW Grand Rapids, 165-MW Seven Sisters hydro projects

05/07/2014

Canadian utility Manitoba Hydro seeks bids for circuit breakers and switchgear modifications at the 479-MW Grand Falls and 165-MW Seven Sisters hydroelectric projects in Manitoba.

Lavey Hydropower Plant

Lausanne awards contract for Lavey hydropower project intake, fish passage equipment

05/07/2014

The city of Lausanne has awarded a US$4.4 million contract to Hans Kunz GmbH for the supply of equipment for a new intake and fish passage as part of an expansion to the 930MW Lavey hydroelectric project.

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