Balancing Hydropower Development in the Ohio River Basin
A large number of retrofit hydroelectric projects have been proposed at existing navigation dams in the Ohio River basin. These proposals involve potentially adverse environmental impacts,...
Optimizing Joint Load Control for Hydroelectric Plants
This paper discusses a method to minimize water usage at a multi-turbine hydroelectric generating plant. At plants which do not spill water this optimization is directly converted to extra...
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...
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...
Programmable Logic Controller Based Governor/Plant Controller
This paper discusses the performance characteristics of the programmable logic controllers (PLC's) is based governor, particularly speed resolution and response times. The...
Implementation of a General Purpose Site Monitoring Network
STS Hydropower owns and operates several hydroelectric plants distributed throughout the United States. These plants, equipped with intelligent controllers, have been remotely monitored...
Recent Developments in Computer Based Control Systems for Hydro Power Control
In recent years microcomputer technology has come to dominate electric control systems. Modern control equipment provides many convenient means for ensuring easy, precise and safe operation...
Water Beneath the City Streets
Urban groundwater control requires high levels of skill and experience but allows for only a small margin of error. Determining the best method for controlling groundwater requires knowing...
The Race for Smart Cars
Prendergast describes the technological elements involved in Intelligent Vehicle/Highway Systems (IVHS), current programs in Europe, Japan and the U.S. aimed at implementing IVHS systems,...
Affordable Housing
a Challenge to Civil Engineers
This conference proceedings, which consists of 25 papers presented at the National Conference on Affordable Housing held in Miami, Florida on December 6-8, 1989, discusses ways that the...
Post-Audits of Environmental Programs and Projects
This is the proceedings of a session at the ASCE Convention, New Orleans, October 1989. Post-audits include evaluation, assessment, and audit of the effects, both intended and unintended,...
Building Commissioning
In order to detect and correct defects in a timely, cost effective manner, HVAC system commissioning has recently been used as part of building construction. Preliminary evidence suggests...
An Effective Cost Control System
Project budgeting consists of converting the capital cost estimate into accountable cost centers by physical or process area and classifications of work. The primary purpose of the project...
The Cost of Quality: A Management Tool
In design and construction of engineered facilities, the cost of quality is a major cost item; perhaps exceeding one fourth the total installed project cost. A simple, flexible Quality...
Reflections on Design of a Turnkey Hydro-Power Project?Calaveras, California
Developing the Calaveras project under a turnkey agreement has shown that: (1) some 2 years can be saved, (2) cash flow for the owner is significantly delayed, because engineering is first...
Integrated Automation for Site Work
Technologically, computer integration can be built around four component systems; (a) a computer system to maintain unified data and control real-time operations, (b) a metrology system...
Automated Position and Control Systems Using Lasers and Electromagnetic Signals
Positioning is a crucial area in the successful integration of CAD data into the construction process. This paper looks at several areas of positioning using lasers and electromagnetic...
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...
Real-time Monitoring of Heavy Equipment in Open Pit Mines
This paper reports on a system with local intelligence to interpret on-board signals. Existing sensors, pressure switches, warning lights, relays, and on-board monitoring systems provide...
Change Orders & Claims?An Owner's Perspective
Generally, the changes come before the claims. The owner wants to know why a change is needed, how much it will cost, and why the need for it was only just discovered. More money spent...
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