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Dewatering Using a Floating Bulkhead Proves Flexible, Reusable and Cost Effective
Going beyond a traditional bulkhead dropped in place with a barge crane or crane hoist, a steel floating bulkhead was conceived to dewater powerplant intakes, gated spillway bays or outlet...

Dardanelle Turbines
The Dardanelle turbines located at river mile 205.5 of the McClellan-Kerr Arkansas River Navigation System, are experiencing an unusual amount of wear in the blade trunnion bushings. Oil...

Total Quality Planning
When it comes to major unit maintenance, 'total quality results' require an investment in 'total quality planning.' The successful replacement...

Modernization of Hydroturbines?New Approach to Effectiveness, Reliability, Environment
Renovation of hydraulic turbines is one of the major lines in LMZ production and is aimed at rehabilitation of hydroturbines and increasing efficiency, rated output and energy production....

Evaluation of Rehabilitation Alternatives for Small Hydropower Plants
This paper describes methods for comparative evaluation of alternative rehabilitation measures for aging small-scale hydroelectric power plants located on storage reservoirs. The evaluation...

Probabilistic Scheduling of Cavitation Repairs
The probabilistic nature of maintenance scheduling is exemplified by operating histories and conditions which vary from unit to unit. Typically, an operator must decide whether to repair...

The Unusual History of a Flowline Canal Within a Reservoir
This paper discusses the history of and remedial repairs to a flowline canal which carries water from the headwater of Lake Isabella in California to Southern California Edison Company's...

The Zebra Mussel Invasion Niagara Power Project
The zebra mussel is a prolific mollusk that has recently invaded the Great Lakes region. It has a proven track record for causing severe macrofouling at power utilities and water municipalities....

Hydro Plant Modernization and Uprating
The paper suggests that the method to achieve desirable hydropower benefits at costs lower than for new thermal projects, is through systematic modernization and upgrading of older hydro...

R. H. Saunders GS?Propeller Turbine Runner Replacement Project Outline and Model Development
Ontario Hydro's operating philosophy is to operate all of its facilities in an optimum manner. The basic rationale for upgrading this plant is to maximize its energy potential...

Robert Moses Procurement and Model Tests ? A Contractor's Perspective
This paper discusses (1) the need to provide realistic cost/benefit evaluation criteria in turbine bid specifications and (2) the benefits of competitive model testing. Recent procurement...

Challenges in the Design and Manufacture of Small Replacement Runners
The increasing trend within the hydro industry to achieve additional capacity and/or energy through runner replacement has brought with it new challenges for the turbine manufacturer....

Rehabilitation of the Historic Ocoee 1 Hydro Power Plant
The Ocoee 1 Hydro Plant is located on the Ocoee River 16 miles east of Cleveland, Tennessee. Built by the East Tennessee Power Company, it was placed in commercial operation in 1912. There...

Ashton Hydroelectric Project Rehabilitation
This paper presents the project experience of rehabilitating the 70-year old Ashton power house and performing the dam design modifications to pass the increased probable maximum flood....

Dillon Hydroelectric Project Performance Versus Expectations
The Dillon Hydroelectric Project was commissioned in 1987. Design and construction are briefly described; plant availability is compared with design expectations; and maintenance costs...

The Twin Vortex Draft Tube Surge
Recent studies conducted at Colorado State University using a model of the 700-MW turbines at the U.S. Bureau of Reclamation's Grand Coulee Third Powerplant indicate that...

Deflector Plate Turbine Aeration?Case Studies
Water quality requirements have become a focal point in recent re-licensing of hydroelectric projects. The Federal Energy Regulatory Commission has significantly increased the relevance...

Performance Analysis of Multipath Acoustic Flowmeters Under Various Hydraulic Conditions
Multipath, crossed plane acoustic flowmeters are being increasingly used for hydroelectric turbine efficiency measurement both for acceptance testing and efficiency mapping of units in...

Hydropower Research: The University Perspective
University hydraulic laboratories have provided applied research services for the hydropower community for many years. It is the contention of this paper that only limited technology transfer...

Waterpower 91?Laboratory Investigation of Syphon Intakes
The Federal Department of Energy, Mines and Resources (Canada) has funded four separate investigations of syphon hydro technology. These study phases, which were carried out by Acres Hydraulic...

 

 

 

 

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