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RECORD NUMBER: 5128 OF 5260

OLS Field Name OLS Field Data
Main Title Utility of Buoyant Plume Models in Predicting the Initial Dilution of Drilling Fluids. Chapter 13.
Author Ozretich, R. J. ; Baumgartner., D. J. ;
CORP Author Environmental Research Lab., Narragansett, RI.
Publisher 1990
Year Published 1990
Report Number EPA/600/D-90/186 ;ERLN-N027;
Stock Number PB91-132837
Additional Subjects Computerized simulation ; Drilling fluids ; Buoyancy ; Experimental designs ; Concentration(Composition) ; Offshore drilling ; Sewage disposal ; Ocean currents ; Study estimates ; Reprints ; Ocean waste disposal ; Hydraulic models ; Waste dilution ; Environmental transport ; Discharge(Water)
Holdings
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NTIS  PB91-132837 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 03/04/1991
Collation 20p
Abstract Three computer programs, PLUME, OUTPLM, and DKHPLM, have been used by the U.S. Environmental Protection Agency and municipalities to estimate initial dilutions of sewage discharged into marine environments. Modification of the input parameters for the three programs, while maintaining the appropriate gravitational direction and ambient density gradient, permitted the use of the programs to predict the centerline dilution, trapdepth, and maximum penetration of negatively buoyant fluids. Drilling fluids and other negatively buoyant fluids were discharged downward into a 4000-liter tank of stratified, static seawater to obtain verification data. Time-lapse photographs were taken through a window, and replicate synoptic samples were obtained through 3-7 sampling ports along the centerline of the fully developed plumes. Samples were analyzed gravimetrically for total solids and spectrophotometrically for soluble components. The conclusions were (1) all three computer program predictions were in good agreement with the measurements and observations made on a limited number of representative plumes generated in the hydraulic model, and (2) the solid and soluble components of the tested drilling fluids appeared to dilute at dissimilar rates within the buoyancy and momentum-dominated initial dilution phase.
Supplementary Notes Also pub. as Environmental Research Lab., Narragansett, RI. rept. no. CONTRIB-N027 Pub. in Oceanic Processes in Marine Pollution, Physical and Chemical Processes, v6 p151-168 1990.
NTIS Title Notes Book chapter.
Title Annotations Reprint: Utility of Buoyant Plume Models in Predicting the Initial Dilution of Drilling Fluids. Chapter 13.
Category Codes 68C; 47C; 47B
NTIS Prices PC A03/MF A01
Primary Description 600/05
Document Type NT
Cataloging Source NTIS/MT
Control Number 103920857
Origin NTIS
Type CAT