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

Underwater Work: Sonar Scans Reveal Sedimentation Issues with Shoshone Powerplant Intake

05/01/2013

A 20% capacity decrease at the 3-MW Shoshone Powerplant led Bureau of Reclamation personnel to commission an underwater sonar inspection of the penstock and river outlet intakes. Images revealed significant sediment accumulation around the intake that likely is responsible for the decreased generation at the plant.

HydroVision International New View of Hydro

Preliminary guide for world's largest hydroelectric power event available online now

04/18/2013

Those planning to attend the world's largest event dedicated to the hydroelectric power industry can get a head start on their scheduling with the HydroVision International 2013 Preliminary Event Guide.

Fishers

JW Fishers introduces new low-cost transponder for underwater work

04/08/2013

A new line of low-cost acoustic transponders and an interrogator from JW Fishers could help make underwater work for hydroelectric project owners, operators and developers easier, the Massachusetts-based manufacturer said.

Improving Debris Management at Lake Lynn Dam

04/01/2013

Personnel safety, cost, efficiency and effectiveness were all determining factors when the operators of Lake Lynn Dam and its associated 51.2-MW powerhouse sought a solution to improve debris management practices. The new solution has prevented mechanical failures and reduction in spillway capacity.

Pakistan seeks bathymetric equipment for underwater surveying of Punjab State dams

03/28/2013

The Irrigation and Power Department of Pakistan's Punjab State seeks bids to supply bathymetric equipment for underwater surveying in reservoirs of dams in Punjab State.

Leaburg Dam

Fish ladder repairs begin at Oregon's Leaburg Dam

03/26/2013

Efforts to repair a fish ladder at Oregon's Leaburg Dam are under way, sources report.

Inspection of the Tunnel at the Kemano Project

03/01/2013

Loose rock appearing in the water conveyance tunnel at the 1,000-MW Kemano powerhouse was a concern for the owner, who turned to the use of remotely operated vehicles to determine the cause and extent of the problem.

Swiss seek intake, fish passage equipment to expand 93-MW Lavey hydropower project

02/04/2013

The city of Lausanne seeks bids to supply hydro-mechanical equipment for a new intake and fish passage as part of an expansion of the 93-MW Lavey hydroelectric project in Switzerland.

Pakistan seeks control gear, transformer bay for 184-MW Chashma hydro project

01/23/2013

Pakistan's Water and Power Development Authority (WAPDA) seeks bids to supply control system and excitation equipment and a generator transformer bay for the 184-MW Chashma hydroelectric project in Pakistan's Mianwali District.

Pakistan seeks control gear, transformer bay for 184-MW Chashma hydro project

01/23/2013

Pakistan's Water and Power Development Authority (WAPDA) seeks bids to supply control system and excitation equipment and a generator transformer bay for the 184-MW Chashma hydroelectric project in Pakistan's Mianwali District.

Hydro-Quebec seeks partners to use SCOMPI robot in hydro turbine runners work

01/16/2013

Hydro-Quebec invites expressions of interest in partnering arrangements to provide hydropower equipment manufacturing and refurbishment using Hydro-Quebec's SCOMPI robot technology.

Hydro-Quebec seeks partners to use SCOMPI robot in hydro turbine runners work

01/16/2013

Hydro-Quebec invites expressions of interest in partnering arrangements to provide hydropower equipment manufacturing and refurbishment using Hydro-Quebec's SCOMPI robot technology.

Poland hydro operator seeks trashrake for 90-MW Dychow

01/03/2013

Poland hydropower operator PGE Energia Odnawialna S.A. seeks bids to supply a trash rack cleaning system including crane for the 90-MW Dychow pumped-storage project on Poland's Bobr River.

Poland hydro operator seeks trashrake for 90-MW Dychow

01/03/2013

Poland hydropower operator PGE Energia Odnawialna S.A. seeks bids to supply a trash rack cleaning system including crane for the 90-MW Dychow pumped-storage project on Poland's Bobr River.

Tech Briefs

12/01/2012

IEEE releases two new hydroelectric standards

Preparation under way for fish passage at Oregon's 40-MW Foster hydropower plant

11/12/2012

Divers from Vancouver-based Northwest Underwater Construction have been working on the face of Oregon's Foster Dam in preparation for a new Oregon Department of Fish and Wildlife facility.

Asset Management: Using ADCP-Based Flow Monitoring to Improve Operations at Niagara

10/01/2012

Installation of a flow measurement system based on acoustic Doppler current profiler technology allowed the New York Power Authority to improve operational control of its Robert Moses and Lewiston hydroelectric plants.

Fish Passage: Positive Results from Fish Collection System at Round Butte Dam

09/01/2012

Nearly 400,000 fish have migrated downstream past Round Butte Dam in Oregon since the beginning of 2010, indicating that the selective water withdrawal tower installed in the reservoir behind the dam in late 2009 has successfully restored fish passage from the Upper Deschutes River Basin.

Contract awarded for terrain modeling work for Georgia's Vardnili hydropower project

08/08/2012

JV GeoEngineering/Hydrosphere of Georgia has been awarded a contract worth US$132,384 for topographic and bathymetric studies of waterways for the 245-MW Bardnili hydropower cascade.

Transitions

07/01/2012

Wayne Wright to retire from Chelan County PUD

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