Modeling Effects of Toxicants on Aquatic Systems
Potential effects of chemicals on biomass production in aquatic systems are extrapolated from laboratory toxicological assays. The extrapolation requires that the effect of acute toxicity...
Vacuum Assisted Pipelines Operation
In the process of upgrading the sewerage facilities for Lancaster, Pennsylvania, it was decided to combine two existing facilities into one new facility. This required the design of three...
Hydrotest Rupture of Penstuck Liner at Bath County
Bath County is the construction site of Virginia Electric and Power Company's pumped storage project. Rupture of a penstock liner during hydrotest at high pressure threatened...
A Three Dimensional Hydraulic Jump
A study is conducted to define the three-dimensional hydraulic jump that occurs in a rectangular channel downstream of a rectangular contracted sluice gate. A sequent depth ratio equation...
Small Hydropower Development for Mining Industry
In deep mines, large refrigeration systems are employed to condition the working air to help control temperature and humidity. Large quantities of water are required to be brought into...
Field Flow Measurement of Hydro-Turbine Efficiency
Performance tests were conducted at Great Northern Paper (GNP) Company's Weldon Hydroelectric Station. The purpose of the tests was to calibrate the Winter-Kennedy taps and...
Hydro-Thermal Power Plants with Pumped Storage
The concept of pumped storage can be justified through the development of hydro-thermal power plants. The hydraulic equipment for power plants of this kind is available in the market meeting...
Integrated Small Hydro Energy Development
Small hydro power development integrated with other renewable energy sources is economical. Civil engineering components if suitably selected and designed reduce power development costs...
Hydrogen Cycle Peak Power at Low-Head Sites
A major draw back to further development of low-head hydro power is that it usually uses run-of-the-river operations. The storage potential for peaking power production that large reservoirs...
Bureau of Reclamation Hydraulic Laboratory
The Bureau of Reclamation used hydraulic models for the first time in 1930 in the laboratory of the Colorado Agriculture Experimental Station in Fort Collins, Colorado. In 1946 the Reclamation...
Yesterday's Mainframe, Today's Desktop
Low cost, high powered engineering computer work stations are now within the economic reach of every small engineering office. While 8-bit computers can solve engineering problems, better...
Superhydro
In 1986, when its six turbine/pump-generator/motor units will be in operation, the Bath County Pumped Storage Hydroelectric Project in Virginia will be the world's largest....
Superplasticizers: Reducing Water in Concrete
Superplasticizers or high-range water reducers are new types of chemical admixtures which when incorporated into concrete can cause significant increases in its slump but without any loss...
A Standard for the Measurement of Oxygen Transfer in Clean Water
This standard was developed to measure the rate of oxygen transfer from diffused gas and mechanical oxygenation devices to water. The standard is applicable to laboratory scale oxygenation...
Reagan's Lopsided Energy R&D Policy: Peril to U.S. Security?
The Reagan Administration has made (or proposed) some major shifts in the country's energy policy. It believes the federal energy research and development program should be...
Boston Tunes Up Water System
In 1977, Boston's water supply system had so many leaks and so many unmetered or undermetered customers that only about half the water entering the system was accounted for....
Coal Terminal
Due to an increased demand for U.S. coal exports in the late seventies and early eighties, the Plaquemines Parish Coal Transshipment Terminal expanded its capacity from 3.5 million to...
Policy Analysis Implications of Four Cogent Transportation Topics
Using a goal-group policy-analysis scheme and from his experience on Capitol Hill, the author documents his observations on the cogent transportation topics facing the United States in...
Emerging Energy/Environmental Trends and the Engineer
Although favorable energy situations presently exist, available fossil fuel sources of energy are limited and as a result there will be an increase in interest in requirements relating...
Lining Tunnels: Toughest Concreting Job?
Concrete linings for water supply tunnels must resist sulphate and other chemical attack, not contribute pollutants to the water it is carrying, and not leak for its design life, which...
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