Underwater Work

Information about work performed under water to maintain dams and hydro facilities, such as dam inspection, dewatering, repairs and routine maintenance.

Underwater Work
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Latest Underwater Work News

U.S. seeks firms for dam safety drilling, grouting at Kentucky's Rough River Dam

11/06/2014

The U.S. Army Corps of Engineers seeks information on firms able to perform dam safety exploratory drilling and grouting at Rough River Dam in Falls of Rough, Ky.

Venezuela names Dongfang to refurbish six units at 10,300-MW Simon Bolivar hydro project

10/24/2014

Venezuela utility Corporacion Electrica Nacional S.A. (Corpoelec) has awarded a contract to Dongfang Electric Machinery Co. Ltd. of China for comprehensive modernization of six turbine-generators in Powerhouse 1 of the 10,300-MW Simon Bolivar hydroelectric project on Venezuela's Caroni River.

Using an ROV to Repair a Leaking Surge Shaft

10/10/2014

Excess seepage revealed during routine monitoring of the 1,020 MW Tala powerhouse and dam led to the use of a remotely operated vehicle to both find and repair the source of the leakage.

What's Hot in Underwater Work at Dams and Hydro Plants

09/25/2014

Divers and ROVs: A cost-effective solution when performing underwater work

More than 10,000 readers each for Hydro Review, HRW-Hydro Review Worldwide

09/03/2014

The most recent BPA Worldwide Brand Report for Hydro Review magazine reveals that the magazine issues average more than 10,400 readers, while HRW-Hydro Review Worldwide magazine has average readership of more than 10,600. HydroWorld.com, the website for these two magazines, averages more than 52,500 monthly unique browsers with nearly 172,500 average page impressions.

Slovenia utility seeks debris removal, outlet repairs at 21-MW Moste hydro project

08/27/2014

Slovenia hydropower utility Savske Elektrarne Ljubljana d.o.o. seeks bids for the second phase of rehabilitation of the 21-MW Moste hydroelectric project on Slovenia's Sava River.

Deep Ocean's surface vessels offer new option for dam, hydropower project maintenance and inspection

08/04/2014

Manufacturing and design company Deep Ocean Engineering, Inc. displayed a number of submersible and surface remotely operated vehicles during the recent HydroVision International 2014 Conference and Exhibition in Nashville, Tenn., highlighting their applications in the areas of hydroelectric power and dam safety.

Diving In: Creative Repair Solution at Horse Mesa Dam

07/21/2014

When a unit at Salt River Project's 129-MW Horse Mesa project suffered a catastrophic failure, a creative option was needed to repair the unit, whose intake structure is 160 feet below the lake surface. The solution chosen, called "saturation diving," involved using special equipment to replicate living at underwater pressures during the task.

Norway operator seeks trash rake, transformers, switchgear for 30-MW Ramfoss hydro project

07/14/2014

Norwegian hydro operator Ramfoss Kraftlag invites applications for pre-qualification to supply a trash rake and transformers, switchgear and controls for the 30-MW Ramfoss hydroelectric project in Norway.

BC Hydro seeks geotechnical drilling, field testing

07/11/2014

Canadian utility BC Hydro invites applications for pre-qualification for specialized geotechnical drilling and field testing for a variety of the utility's projects and operations throughout British Columbia.

French engineer seeks trash rake for 7.9-MW Chavaroche hydro project

07/11/2014

Hydropower engineer Hydrostadium seeks bids to supply a replacement trash rake for the 7.9-MW Chavaroche hydroelectric project on France's Fier River.

Grant PUD updates status of Wanapum Dam repairs

06/26/2014

Contractors are working around the clock in preparation for final reinforcing repairs of a cracked Wanapum Dam spillway, operator Grant County Public Utilities District said.

HydroVision International technical tour registration deadline extended to July 2

06/26/2014

The deadline to register for each of HydroVision International 2014's three technical tours has been extended to Wednesday, July 2, but space is limited and filling quickly.

U.S. seeks firms for dam safety geotechnical, drilling work

06/25/2014

The U.S. Army Corps of Engineers' Huntington District seeks information on firms able to perform dam safety geotechnical and drilling work at Corps facilities throughout the United States.

HydroVision International: A cornucopia of events “under one roof”

06/25/2014

A stator winding maintenance workshop. A 5K fun run. Meetings of multiple organizations affiliated with the hydroelectric power industry. Research updates and findings. These and many more co-located events are being offered “under one roof” with HydroVision International 2014 in Nashville.

U.S. seeks waterstop repairs at 494-MW Big Bend hydro project

05/27/2014

The U.S. Army Corps of Engineers seeks bids for remedial waterstop repairs in upstream monolith joints at the 494.3-MW Big Bend hydroelectric project on the Missouri River in South Dakota.

EdgeTech unveils new underwater surveying tool

05/12/2014

A new bathymetry system from underwater technology developer EdgeTech allowed the company to map Canada's St. John's Harbor in less than three hours.

EPC contractor selects SediCon for Coca Coda Sinclair hydro project desanders

04/23/2014

Equipment manufacturer SediCon has been contracted to provide desanding units for Ecuador's 1,500-MW Coca Codo Sinclair hydroelectric plant.

Grant PUD narrows causes of Wanapum Dam fracture

04/10/2014

The foundation below Wanapum Dam was not a factor in creating the fracture on the structure's pier monolith No. 4, Grant County Public Utilities District has determined.

NPC completes underwater work at Agus 6 hydroelectric plant

04/03/2014

Operations have resumed at the 200-MW Agus 6 hydropower plant after the Philippines' National Power Corp. finished plugging a leak in the dam's blow-off pipe.

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