Grouting Trends
The grouting industry is discussed and North American practice compared to European practice. There has been more innovation in this field overseas, but there have also been failures....
High Speed Multi-Link Automated Control
A new manipulator control technique is being investigated with potential for improving equipment life and productivity without requiring more operator training. It can retrofit to multi-link...
The Great Quake: On Site Reports
Written within two weeks of the Oct. 17, 1989 California earthquake, these comments cannot be considered definitive. But they do stress two points: 1) Earthquake codes do work. Buildings...
Sri Lanka's Mini-Hydro Rehabilitation Programme
As part of Sri Lanka's medium term investment programme funded mainly by the World Bank and Asian Development Bank, the British Government's Overseas Development...
Refurbishment and Modernization of Hydro Plants
In order to assemble experiences, settle and systematize the problems connected with rehabilitating and redeveloping hydro power plants and to work out proposals a project titled 'Refurbishment...
Outage Time and Its Effects on Rehabilitation Philosophy ? A Case Study
The Abitibi-Price Paper Mill located in Grand Falls, Newfoundland presently has eight (8) hydro-generating units in operation to assist in offsetting the power demands created through...
Considerations for Retrofitting Large Dams for Hydropower
The majority of large dams which are currently being retrofitted for hydropower are either flood-control impoundments or navigation structures. In the Ohio River Division of the U. S....
Hydropower retrofit at the Toledo Bend Dam
Since the early 1970's, the Authorities have been examining the possibility of utilizing sluiceway releases to generate hydroelectric power to meet most of the demands of...
Rehabilitation of Existing Hydro, Our Oldest Natural Resource
With renewed interest in hydro, many old sites are being rehabilitated to achieve maximum power output and higher efficiencies. Rehabilitated plants are now performing at optimal levels,...
New Vs. Old? A New Capacity Question Facing Hydropower Redevelopers
Determining the extent of PURPA-qualified 'new capacity' which may be created as a result of the modification/rebuild/redevelopment of existing projects is a...
Repair of The Hinckley Dam Embankments
The New York Power Authority was licensed in 1982 to construct and operate a 9 Mw hydroelectric facility at the existing Hinckley Dam near Utica, New York. Soil exploration programs undertaken...
Milltown Powerhouse Rehabilitation
The Milltown Powerhouse and dam are over 80 years old. The powerhouse and other structures were built in 1906 and are owned by the Montana Power Company. The plant is located on the Clark...
Cedar Falls Project?Major Rehabilitation
This paper presents planning objectives and operational considerations which governed the design and construction of a major rehabilitation project implemented at the City of Seattle's...
Green Mountain Power Corporation Bolton Falls Hydroelectric Project
The project proceeded through preliminary design, FERC licensing, and into detailed design, following its selection as one of seven low-head redevelopment projects to be partially funded...
Snowden Hydroelectric Facility Expansion and Improvements
A geotechnical investigation was undertaken in October 1983. The investigation included core drill samples at the powerhouse, along the proposed dike, at the retaining walls and headgate...
Rehabilitation of a High Specific Speed Francis Turbine
An upgrade of two (2) 4. 06 meter diameter high specific speed Francis turbines is now in progress. These machines were originally installed by Allis-Chalmers in the 1920's...
A Lesson in Repairing Cracked Kaplan Blades
Each of the three units that failed at Bonneville Lock and Dam started with a fatigue break and ended in a brittle fracture. Consequently, a comprehensive in-house weld procedure was developed...
Upriver Dam Hydroelectric Project Rehabilitation After Failure, Part A: Failure Investigation and Lessons to be Learned
A lightning strike caused electrical failure at Spokane's two Upriver power plants, resulting in the river overtopping Project embankments, and causing nearly 11. 5 million...
Upriver Dam Hydroelectric Project Rehabilitation After Failure, Part B: Rehabilitation and Enhancement of Project Civil and Mechanical Facilities
A feasibility investigation of rehabilitation alternatives was conducted which identified several alternatives for repairing the damage and placing both powerhouses back on-line. These...
Rehabilitation of TVA's Great Falls Project
After seventy-one years of productive service, this two-unit, 31,860 kV plant is undergoing a major rehabilitation. The deterioration of the project has been of concern since the beginning...
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