Rocky Mountain Pump-Turbines and Related Mechanical Equipment
The Rocky Mountain powerplant will have three reversible, single stage, vertical shaft pump-turbine units, each having a maximum output of 321 MW generating and a maximum pumping capacity...
On-Site Rehabilitation Capabilities for the Nineties
This paper will review recent technological advancements in on-site manufacturing and machining capabilities which have been developed for the proper installation of new hydro turbines....
Dynamics of Protective Coatings to Limit Cavitation Damage
Cavitation implosions inflict a very high impact stress on turbine blades and turbine liners. One strategy for limiting the impact on the turbine components is to overlay a protective...
Decision Support for Colorado River Operations
The United States Bureau of Reclamation (Reclamation) uses a simulation model known as the 24-month Study Model for planning monthly and seasonal operations for the Colorado River Basin....
An Overview of the Latest Developments in the Modernization, Upgrading and Rehabilitation of Existing Hydraulic Turbines
The growth experienced in the 1980's in the modernization of older hydro plants has fueled the development of new runner and wheelcase designs and modifications providing...
Weld Overlaying with a Cavitation-Resistant Alloy
The characteristics and applications of a cavitation-resistant alloy, Hydroloy HQ913, are described. The alloy as weld overlays applied on hydropower plant components by covered electrodes...
New Interior Lining for Welded and Riveted Penstocks
Pacific Gas and Electric Company (PG&E) has 73 hydroelectric power facilities installed throughout its distribution system. Each of these facilities has at least one penstock,...
Position Indicator Arrangements for Gates
There are several types of position indicator arrangements that can be installed for various types of gates. These arrangements include mechanical, hydraulic and electronic types. Larger...
Diagnostic Testing and Repair of Grand Rapids Generating Station's Unit Four
This paper is a case history that discusses diagnosis and correction of a variable pitch propeller type (Kaplan) hydraulic turbine problem. The turbine problem involved fatigue failures...
Pressure-Time Method Using Modern Practices
Over the past twenty years, Hydro-Quebec has modernized the pressure-time method of flow measurement, a method which is generally economical but sometimes difficult to apply. Starting...
Vibration of Penstocks in Hydroelectric Installations
In many penstocks and pump discharge lines of turbines and pumps, pipe vibrations have been observed. Many of these installations have blade and vane arrangements other than the classic...
Some Unusual Vibrations in Hydro Machinery
Most hydro machinery engineers have read the textbook cases of self-exited and flow induced vibrations. Usually such textbook vibrations are only found in the text book! In the real world,...
Turbines and Pump Turbines for Ultra High Heads
The paper describes the turbine development in Norway as background for high head turbine technology and shows a typical Norwegian high head Francis as an example. High head reversible...
Case Study in the Upgrade and Rehabilitation Techniques of a Pumped Storage Installation
This paper presents a specific case study in the runner upgrade and unit rehabilitation of two pump/turbines at the Seneca Powerhouse. The study addresses the modern optimized designs...
Application of Personal Computers to Field Flow Measurement
Flow measurements are often necessary to verify the performance of hydro turbines for regulatory, contractual, or engineering purposes. Historically, several methods utilizing various...
The Variety of Views of the Pacific Rim
Recent Advances in Atoll Hydrogeology
Ground Water in Permafrost in Northeast China
Improving Well Hydraulics
Aquifer Contributions to Discharge in a Well
Return to search