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Investigation of the influence of thermal discharge from a large electric power station on the temperature and near-shore circulation of Lake Michigan. Quarterly progress report, 1 October 1973--31 December 1973

Description: Progress is reported on studies on nearshore circulation of thermal effluents from the Oak Creek Power Plant, Oak Creek, Wisconsin, in Lake Michigan. Some preliminary data were processed by computer programs to obtain hourly averaged values from ten minute interval values, vector frequency diagrams, and progressive vector diagrams that illustrate the distribution of current meter data according to intervals of speed and direction. (CH)
Date: January 1, 1973
Creator: Mortimer, C.H. & Sato, G.K.
Partner: UNT Libraries Government Documents Department

Microbiology of thermally polluted environments. Technical progress report, August 1, 1973--July 31, 1974

Description: Thermal pollution is discussed with regard to sources of manmade thermal water; thermal consequences of thermal pollution; and thermal effects on water quality. Natural habitats receiving thermal additions are discussed with regard to geothermal habitats and geothermal modification of normal aquatic ecosystems. Ecological observations on geothermal habitats include upper temperature limits for various taxonomic groups and consequences of species restriction by temperature. General ecological consequences of thermal polution are discussed with regard to differences between thermal effects on cold and warm water habitats; adaptation to the thermal environment; effect of temperature on gruwth rate; temperatare and water quality; and bacterial indicators of thermal pollution. (HLW)
Date: April 1, 1974
Creator: Brock, T.D.
Partner: UNT Libraries Government Documents Department

Distribution of excess temperature from the Morgantown Generating Station on the Potomac Estuary

Description: Research undertaken to determine the effects of thermal effluents on the temperature distribution in estuarine waters is described. Procedures for and results from measurements of the temperature, river flow, tidal currents, salinity, wind, etc at the Potomac River estuary in 1969 and 1972, which represent pre- and post-operation conditions for the operation of the fossil- fueled Morgantown power plant, are reported. (LC L)
Date: October 1, 1973
Creator: Carter, H.H.
Partner: UNT Libraries Government Documents Department

Clam survival in chlorinated water

Description: Applications of 10 to 40 ppM chlorine were ineffective in control of Asiatic clams that had colonized the suction well of a cooling water pump for one of the Savannah River production reactors. Accumulated mud on the floors and walls of the basin protected large numbers of clams from lethal chlorine exposures. After clams were removed from chlorine exposures of 9, 17, 25, and 54 hours, respective survivals after seven days in a recovery chamber were 97 percent, 84 percent, 47 percent, and 10 percent. Of the clams that were protected by mud during the entire test (54 hours), 65 percent were alive after seven days in the recovery chamber. (auth)
Date: April 30, 1976
Creator: Tilly, L.J.
Partner: UNT Libraries Government Documents Department

Temperature and velocity measurements and predictive model comparisons in the near-field region of surface thermal discharges

Description: Simultaneous temperature and velocity measurements were made in the near- field region of the surface thermal discharge at the Point Beach Unit 1 and Palisades Nuclear Power Plants on Lake Michigan. Data collected include measurements of temperature and velocity at the 0.5-, 1.0-, 1.5-, 2.0-, 2.5-, and 3.0-m depths, along with measurements of ambient lake and metenrological conditions. Bottom depth was also measured at variouss locations. four such surveys were made at the Point Beach plant, three at the Palisades plant. To examine the jet features from the abpve surveys and facilitate a comparison with analytical model predictions, a computer program was written to smooth the data, extracting such jet characteristics as trajectory, centerline temperature decay and temperature half-widths, centerline velocitv decay and velocity half-widths, temperature and velocity half-depths, and isotherm areas. Four near-field analytical models often used in environmental impact evaluations of power-plant surface discharges are compared to the jet characteristics determined from the smoothed jet data. The Pritchard model compares rather well with these limited data and is often conservative when model-data discrepancies exist. The Stolzenbach -Harleman and Prych models predict too rapid a temperature and velocity decay accompanying too great a lateral spread. The Motz --Benedict model is too sensitive to an entrainment coefficient E with little consistent data available for its determination for accurate prediction. Recommendations for future research, encompassing the field-data acquisition, the smoothing procedure, and the presently available models are included. (30 references) (auth)
Date: October 1, 1973
Creator: Paddock, R.A.; Policastro, A.J.; Frigo, A.A.; Frye, D.E. & Tokar, J.V.
Partner: UNT Libraries Government Documents Department