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  Partner: UNT Libraries Government Documents Department
 Decade: 1980-1989
 Collection: Technical Report Archive and Image Library
Alumina Miniplant Operations: Separation of Aluminum Chloride Liquor from Leach Residue Solids by Classification and Thickening

Alumina Miniplant Operations: Separation of Aluminum Chloride Liquor from Leach Residue Solids by Classification and Thickening

Date: 1983
Creator: Sorensen, Roy T.; Sawyer, Dwight L., Jr. & Turner, Theodore L.
Description: Report issued by the Bureau of Mines over recovery methods of alumina through leaching of kaolin clay. The materials, equipment, and procedures used are discussed. This report includes tables, and illustrations.
Contributing Partner: UNT Libraries Government Documents Department
Anahuac: Biological Resources

Anahuac: Biological Resources

Date: 1983
Creator: U.S. Fish and Wildlife Service
Description: Map showing biological resources (birds, oysters, fishes, grasses, etc.) in the Anahuac region of the Texas Barrier Islands coastline area. Scale 1:100,000.
Contributing Partner: UNT Libraries Government Documents Department
Anahuac: Mineral Resources and Selected Oil and Gas Infrastructure

Anahuac: Mineral Resources and Selected Oil and Gas Infrastructure

Date: 1983
Creator: U.S. Fish and Wildlife Service
Description: Map showing mineral resources (oil, gas, sand, clay, etc.) in the Anahuac region of the Texas Barrier Islands coastline area. Scale 1:100,000.
Contributing Partner: UNT Libraries Government Documents Department
Anahuac: Socioeconomic and Natural Features

Anahuac: Socioeconomic and Natural Features

Date: 1983
Creator: U.S. Fish and Wildlife Service
Description: Map showing various sites and features (recreation sites, water treatment facilities, public lands, historic sites, transportation, etc.) in the Anahuac region of the Texas Barrier Islands coastline area. Scale 1:100,000.
Contributing Partner: UNT Libraries Government Documents Department
Analysis of an Internally Pressurized Prismatic Cell Can

Analysis of an Internally Pressurized Prismatic Cell Can

Date: April 1980
Creator: Majumdar, S.
Description: This report contains an elastic stress and displacement analysis of a prismatic cell can subjected to internal pressure. A computer program was written to perform the analysis. The results show that, for the geometry chosen, the thicknesses of the cell-can walls and the magnitude of the internal pressure are the most important parameters that determine the stresses and deformations of the cell can. Recommendations for future studies are included.
Contributing Partner: UNT Libraries Government Documents Department
Analysis of Cracked Core Spray Injection Line Piping from the Quad Cities Units 1 and 2 Boiling Water Reactors

Analysis of Cracked Core Spray Injection Line Piping from the Quad Cities Units 1 and 2 Boiling Water Reactors

Date: December 1983
Creator: Diercks, D. R.
Description: Elbow assemblies and adjacent piping from the loops A and B core spray injection lines of Quad Cities Units 1 and 2 Boiling Water Reactors have been examined in order to determine the nature and causes of coolant leakages and flaw indications detected during hydrostatic tests and subsequent ultrasonic inspections. The elbow assemblies were found to contain multiple intergranular cracks in the weld heat-affected zones. The cracking was predominantly axial in orientation in the forged elbow and wedge components, whereas mixed axial and circumferential cracking was seen in the wrought piping pieces. In at least two instances, axial cracks completely penetrated the circumferential weld joining adjacent components. Based upon the observations made in the present study, the failures were attributed to intergranular stress corrosion cracking caused by the weld-induced sensitized microstructure and residual stresses present; dissolved oxygen in the reactor coolant apparently served as the corrosive species. The predominantly axial orientation of the cracks present in the forged components is believed to be related to the banded microstructure present in these components. The metallographic studies reported are supplemented by x-radiography, chemical analysis and mechanical test results, determinations of the degree of sensitization present, and measurements of weld metal delta ferrite ...
Contributing Partner: UNT Libraries Government Documents Department
Analysis of Heat-Pipe Absorbers in Evacuated-Tube Solar Collectors

Analysis of Heat-Pipe Absorbers in Evacuated-Tube Solar Collectors

Date: February 1986
Creator: Hull, John R.; Schertz, William W. & Allen, John W.
Description: Heat transfer in evacuated-tube solar collectors with heat-pipe absorbers is compared with that for similar collectors with flow-through absorbers. In systems that produce hot water or other heated fluids, the heat-pipe absorber suffers a heat transfer penalty compared with the flow-through absorber, but in many cases the penalty can be minimized by proper design at the heat-pipe condenser and system manifold. The heat transfer penalty decreases with decreasing collector heat loss coefficient, suggesting that evacuated tubes with optical concentration are more appropriate for use with heat pipes than evacuated or non-evacuated flat-plate collectors. When the solar collector is used to drive an absorption chiller, the heat-pipe absorber has better heat transfer characteristics than the flow-through absorbers.
Contributing Partner: UNT Libraries Government Documents Department
Analysis of Proposed Gamma-Ray Detection System for the Monitoring of Core Water Inventory in a Pressurized Water Reactor

Analysis of Proposed Gamma-Ray Detection System for the Monitoring of Core Water Inventory in a Pressurized Water Reactor

Date: December 1987
Creator: Markoff, Diane Melanie
Description: An initial study has been performed of the feasibility of employing an axial array of gamma detectors located outside the pressure vessel to monitor the coolant in a PWR. A one-dimensional transport analysis model is developed for the LOFT research reactor and for a mock-PWR geometry. The gamma detector response to coolant voiding in the core and down-comer has been determined for both geometries. The effects of various conditions (for example, time after shutdown, materials in the transport path, and the relative void fraction in different water regions) on the detector response are studied. The calculational results have been validated by a favorable comparison with LOFT experimental data. Within the limitations and approximations considered in the analysis, the results indicate that the gamma-ray detection scheme is able to unambiguously respond to changes in the coolant inventory within any vessel water region.
Contributing Partner: UNT Libraries Government Documents Department
Analysis of the October 5, 1979 Lithium Spill and Fire in the Lithium Processing Test Loop

Analysis of the October 5, 1979 Lithium Spill and Fire in the Lithium Processing Test Loop

Date: December 1981
Creator: Maroni, V. A.
Description: On October 5, 1979, the Lithium Processing Test Loop (LPTL) developed a lithium leak in the electromagnetic (EM) pump channel, which damaged the pump, its surrounding support structure, and the underlying floor pan. A thorough analysis of the causes and consequences of the pump failure was conducted by personnel from CEN and several other ANL divisions. Metallurgical analyses of the elliptical pump channel and adjacent piping revealed that there was a significant buildup of iron-rich crystallites and other solid material in the region of the current-carrying bus bars (region of high magnetic field), which may have resulted in a flow restriction that contributed to the deterioration of the channel walls. The location of the failure was in a region of high residual stress (due to cold work produced during channel fabrication); this failure is typical of other cold work/stress-related failures encountered in components operated in forced-circulation lithium loops. Another important result was the isolation of crystals of a compound characterized as Li/sub x/CrN/sub y/. Compounds of this type are believed to be responsible for much of the Fe, Cr, and Ni mass transfer encountered in lithium loops constructed of stainless steel. The importance of nitrogen in the mass-transfer mechanism has ...
Contributing Partner: UNT Libraries Government Documents Department
Analytical and Experimental Analysis of Procedures for Testing Solar Domestic Hot Water Systems

Analytical and Experimental Analysis of Procedures for Testing Solar Domestic Hot Water Systems

Date: February 1982
Creator: Fanney, A. H.; Thomas, W. C.; Scarbrough, C. A. & Terlizzi, C. P.
Description: Report issued by the National Bureau of Standards over testing procedures used for solar domestic water heating systems. Testing methods are discussed. This report includes tables, illustrations, and photographs.
Contributing Partner: UNT Libraries Government Documents Department