POU/POE Devices: Availability, Performance, and Cost
In order to gather and summarize information and data on point of use/point of entry (POU/POE) devices, a committee was established by the Environmental Engineering Division of the American...
Use of POE/POU Technology at US Army Installations
A wide spectrum of adverse water quality characteristics has been experienced at US Army installations throughout the country. These characteristics, both interim and long-term in nature,...
Chemigation Equipment for Protecting Water Quality
Concerns for protecting groundwater quality have brought forth some strict EPA regulations on equipment required for injecting pesticides into irrigation systems. These chemigation equipment...
History of the Federal Interagency Sedimentation Project
Since 1939, the date of the Project's inception, the team has operated under the direction of two lead agencies - the U.S. Geological Survey and U.S. Army Corps of Engineers....
Thermally Developed Blade Stresses and Cavitation Damage
Cavitation damage to the turbine runner blades, to the draft tube liner, and to the runner hub requires extensive welding repair. The traditional repair method is to gouge out the damaged...
Vibration Measurements in Condition Monitoring
Vibration measurements as condition monitoring helps discovering defects and wear at an early stage, and is used to plan repairs and maintenance according to plans for water consumption,...
Trashrack Cleaning?A Job Requiring Utmost Care
During the last few years, the tendency in most industries has been towards more automation. Hydro has been no exception. Trashrack raking machines have followed this trend, and automatic...
Upgrading Trashraking Equipment During Scheduled Maintenance Outages
Four small hydro plants in Northern California were selected by Pacific Gas and Electric Company to upgrade and automate their trashrack raking equipment during the 1988 maintenance outages....
Management System for Power Plants Tecaid Maintenance System
Operational conditions and production levels are maintained at consistently higher levels when a planned maintenance system is used. Initial operational expenses for a planned maintenance...
Bonneville I Powerhouse Station Service Unit Rehabilitation
This paper presents the work being done towards the rehabilitation of the Bonneville I station service unit. The rehabilitation of this unit includes a generator rewind, excitation system...
Vertical Axis Hydro Turbines for Off Grid Installations
This paper describes the design, manufacture and testing of a 5 kW floating VAHT for use in tidal, ocean, and river installations. This work is based on the results of research contracts...
Retrofitting of Hydro Electric Generators with Bus Fed Solid State Excitation Systems
The Northern Hydro Division has completed retrofitting the excitation systems on 22 generating units ranging in output from 1 to 95 MWatts. The Big Creek Hydro Project upgraded these systems...
Trouble-Shooting Large Hydroturbine Bearings
Special problems associated with very large thrust and guide bearings and lubrication systems are presented, and cover common trouble spots, with examples. Various large hydroturbine bearing...
Hydroelectric Generator Rewinding Pitfalls and Means to Ensure Success
The failure or success of generator rewinding begins well before the actual rewind, and many of the pitfalls can be avoided if owners take some very important steps prior to the rewind...
Problems Associated with Large Hydro Generators
Since the early 1950s, hydro generators have increased in size from the 50 MVA range to much larger units employed today, many of which are in excess of 500 MVA. Such a tenfold increase...
Understanding Generator Static Excitation System
This paper explains some of the basic terms and features associated with a static excitation system (SES) to enable non-specialists to specify it according to their requirements. A simple...
Replacement of Computer Control at John Day Powerhouse
One of the first projects chosen by the Corps of Engineers for computer control was the John Day Project on the Columbia River. John Day powerhouse was completed in 1971 and has 16 generators...
Devil Canyon Powerplant Enlargement Project: Electrical Design Problems and Challenges
Devil Canyon Powerplant is a hydroelectric plant facility of the huge California Water Project. This powerplant is located 5 miles north of San Bernandino. It is currently being enlarged...
Distributed Control Applications for Utility Hydroelectric Plants
In 1984, Washington Water Power began a program to improve monitoring and control systems for hydroelectric plants. The control systems being improved with distributed control equipment...
Uprating, Modernization and Automation of a Vertical Francis Turbine Generating Unit
The power demands of the Boise Cascade Paper Mill in Rumford, Maine are partially satisfied by two hydro-generating plants located in the near vicinity. In 1984 several factors prompted...
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