Composite Liner, Leak Detection System, and Floating Cover for Nuclear Reactor Emergency Retention Basins
Existing reactor effluent basins are being retrofitted with composite liners, leak detection system and floating covers. Such basins have a 15-year life and remain empty until an accident...
A New Graphic Technique for Reporting Soil Quality Analyses
Boston's Artery/Harbor Tunnel Project is currently the United States' largest highway construction project. One of its major issues is the disposal of an estimated...
Pressure-Time Flow Measurements Under Adverse Conditions
Theoretical analyses suggest that the pressure-time method is capable of accurately determining flow rate in the short, varying cross section, 'semi-scroll' penstocks...
Foundation Investigations of Concrete Dams
This paper discusses a series of foundation investigations conducted on concrete dams by Pacific Gas and Electric Company. The paper focuses on investigative techniques, equipment, appropriate...
Uplift Pressures and Strengths for Concrete Gravity Dams
This paper presents an overview of the results of a three year study to compile a database of stability parameters and foundation characteristics for older concrete gravity dams. The database...
Cone Penetration Testing: Cost Effective Soil Exploration
On reviewing the 1987 Part 12 Dam Safety Inspection Reports for the Wisconsin River Power Company's Petenwell and Castle Rock Dams, the Federal Energy Regulatory Commission...
Penstock Rehabilitation
The deterioration of aging penstocks is a common problem at many existing hydroelectric plants. A comprehensive understanding of the physical condition and functional limitations of an...
The Development and Writing of the ASCE Manual of Practice for Steel Penstocks
The 'Manual of Practice for Steel Penstocks' is being written under the supervision of the Hydropower Committee of the ASCE Energy Division. The committee felt...
Composite Materials Show Promise for Clean Kaplan Runners
In order to prevent any possibility of oil leakage into river water, LMZ manufactured Kaplan runners containing oil in the blade servomotor only, while the blade operating mechanism operates...
Laboratory and Field Experience with Cavitation Monitoring of Hydroturbines
When control of cavitation erosion can be accomplished by changes in operating conditions, real-time monitoring of cavitation level is a valuable tool. Three types of cavitation monitors...
Cavitation Noise Investigation of a Pump-Turbine
The results from cavitation noise detection measurements on a 35 MW pump-turbine are presented. Detailed information about the cavitation noise is determined including three-dimensional...
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...
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,...
Evaluation of Thermoplastic Drainage Pipe Designs in Europe and North America
The last 10 years have seen significant increase in the use of plastic pipe for drainage systems in North America in comparison to Europe. Many plastic pipe products have included corrugations,...
Flow Measurement in Irrigation Practice: State-of-the-Art
State-of-the-art flow metering developments for irrigation are reviewed. Selected older methods are updated with recent improvements. These include orifice meters, venturi meters, critical-flow...
Field Fabrication of Reinforced Plastic Pipes
A new technology allows fabrication of reinforced plastic pipe in the field, or the lining of existing pipe. The plastic used can be selected to meet job and site requirements. The reinforcing...
Sediment Transport Measurements in the Nile River at Bani Mazar
Measurements of sediment transport on the Nile River were conducted at Bani Mazar (200 km South of Cairo) during high and low water stages. Bed-load and suspended-load transport rates...
Hydraulic Aspects of Grade Control Structures
This paper describes the function of grade control structures. The primary purpose of a grade control structure is to maintain or establish a desired bed elevation in a channel. Basically...
Bed Load Roughness in Supercritical Flow
A supercritical concrete channel is proposed for Mission Creek located in Santa Barbara County, California. The proposed channel may transport gravels and cobbles as bed load during large...
Evaluation of Embankment Erosion at TVA's Chickamauga Project
Studies were made to evaluate the extent of erosion to be expected under probable maximum flood (PMF) conditions. The erosion studies were made using the EMBANK computer program. The results...
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