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WESF cesium capsule behavior at high temperature or during thermal cycling

Description: Double-walled stainless steel (SS) capsules prepared for storage of radioactive /sup 137/Cs from defense waste are now being considered for use as sources for commercial irradiation. Cesium was recovered at B-plant from the high-level radioactive waste generated during processing of defense nuclear fuel. It was then purified, converted to the chloride form, and encapsulated at the Hanford Waste Encapsulation and Storage Facility (WESF). The molten cesium chloride salt was encapsulated by pourin… more
Date: June 1, 1985
Creator: Tingey, G. L.; Gray, W. J.; Shippell, R. J. & Katayama, Y. B.
Partner: UNT Libraries Government Documents Department
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Chemical Engineering Division fuel cycle programs. Quarterly progress report, July-September 1978

Description: Fuel cycle work included hydraulic performance and extraction efficiency of eight-stage centrifugal contactors, flowsheet for the Aralex process, Ru and Zr extraction in a miniature centrifugal contactor, study of Zr aging in the organic phase and its effect on Zr extraction and hydraulic testing of the 9-cm-ID contactor. Work for predicting accident consequences in LWR fuel processing covered the relation between energy input (to subdivide a solid) and the modes of particle size frequency dist… more
Date: January 1, 1980
Creator: Steindler, M.J.; Ader, M. & Barletta, R.E.
Partner: UNT Libraries Government Documents Department
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Design, analysis, and test verification of advanced encapsulation systems. Triannual report for period ending 31 July 1981

Description: The construction of optical and electrical verification test coupons of encapsulated solar cells and potted copper is detailed. Testing of these coupons was completed and the results are presented. Additionally, a thermal simulation of roof mounted array conditions was done and the results documented.
Date: November 1, 1981
Creator: Garcia, A. & Minning, C.
Partner: UNT Libraries Government Documents Department
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Glass for low-cost photovoltaic solar arrays

Description: In photovoltaic systems, the encapsulant material that protects the solar cells should be highly transparent and very durable. Glass satisfies these two criteria and is considered a primary candidate for low-cost, photovoltaic encapsulation systems. In this report, various aspects of glass encapsulation are treated that are important for the designer of photovoltaic systems. Candidate glasses and available information defining the state of the art of glass encapsulation materials and processes … more
Date: February 1, 1980
Creator: Bouquet, F.L.
Partner: UNT Libraries Government Documents Department
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Thumb tack physical model evaluation of polystyrene bead foam as an encapsulant for electronic packages

Description: A physical model in the shape of a thumb tack is used to measure forces on electronic component lead wires when soldered into printed wiring boards. Encapsulation of electronic packages in polystyrene bead foam of 0.2, 0.3, 0.4, 0.5, and 0.6 g/cm/sup 3/ densities was evaluated. No solder joint damage was seen. Crushing pressures on metal transistors also were safe for all densities. Experimental data agreed well with theoretical calculations based on the concept of constrained thermal expansion. more
Date: March 1, 1980
Creator: Fossey, D. J. & Swanson, G. D.
Partner: UNT Libraries Government Documents Department
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Progress report 13 for April 1979-August 1979 and proceedings of the 13th project integration meeting

Description: This report describes progress made by the Low-Cost Solar Array Project during the period April through August 1979. It includes reports on project analysis and integration; technology development in silicon material, large-area sheet silicon, and encapsulation; production process and equipment development; engineering and operations, and a discussion of the steps taken to integrate these efforts. It includes a report on, and copies of viewgraphs presented at the Project Integration Meeting hel… more
Date: January 1, 1979
Partner: UNT Libraries Government Documents Department
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Comparison of the effect of outdoor exposure on the optical properties of solar mirrors and transparent encapsulant materials

Description: The effects of outdoor exposure on solar mirrors and transparent encapsulant materials are assessed and compared. The encapsulant materials tested included glasses, polymers and silicones. Samples of the materials were placed on stationary exposure racks in six locations that represented urban, desert, oceanside and high altitude mountain areas. Samples were removed periodically for optical characterizations. The spectral hemispherical and diffuse reflectance of the mirror samples and the spect… more
Date: September 1, 1981
Creator: Dake, L.S.; Lind, M.A. & Maag, C.R.
Partner: UNT Libraries Government Documents Department
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Reentry thermal testing of light-weight radioisotope heater units

Description: Two Light-Weight Radioisotope Heater Units (LWRHU) were exposed to thermal ramps simulating atmospheric reentry. The helium release rates were measured during each test and modeled after simple diffusion theory. The reentry pulses did not result in swelling of the claddings or degradation of fuel pellets.
Date: March 1, 1982
Creator: Peterson, D.E. & Starzynski, J.S.
Partner: UNT Libraries Government Documents Department
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Investigation of test methods, material properties, and processes for solar cell encapsulants. Seventh annual report

Description: The goal of the program is to identify and evaluate encapsulation materials and processes for the protection of silicon solar cells for service in a terrestrial environment. Aging and degradation studies were performed including: thermal aging, sunlamp exposures, aging in controlled environment reactors and outdoor photothermal aging devices, and metal catalyzed degradation. Other tests addressed water absorption, primers and adhesives, soiling experiments, and corrosion protection. (LEW)
Date: January 1, 1983
Creator: Willis, P. B.
Partner: UNT Libraries Government Documents Department
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Design, analysis, and test verification of advanced encapsulation system. Triannual report for period ending March 31, 1980

Description: Two strawman designs have been devised to aid in the development of analytical techniques for evaluating advanced solar cell encapsulation systems designs. The optical model for a multi-layer system in which reflection, absorption, and transmission may occur between layers, was completed and analytically verified. An expression giving the electrical safety criteria for a multi-layer dielectric system has been derived. A thermal analytical analysis program has been developed which will accommoda… more
Date: April 1, 1980
Creator: Allison, K.; Garcia, A. & Minning, C.
Partner: UNT Libraries Government Documents Department
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Annual report Development and characterization of solidified forms for high-level wastes: 1978.

Description: Development and characterization of solidified high-level waste forms are directed at determining both process properties and long-term behaviors of various solidified high-level waste forms in aqueous, thermal, and radiation environments. Waste glass properties measured as a function of composition were melt viscosity, melt electrical conductivity, devitrification, and chemical durability. The alkali metals were found to have the greatest effect upon glass properties. Titanium caused a slight … more
Date: December 1, 1979
Creator: Ross, W. A. & Mendel, J. E.
Partner: UNT Libraries Government Documents Department
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Macro-encapsulation of heat storage phase-change materials for use in residential buildings. Fifth quarterly progress report, September 29, 1977-December 29, 1977

Description: Objectives are to assess the feasibility of macro-encapsulated PCM's for residential solar systems, to develop and evaluate such materials. Encapsulant materials under consideration are multilayer flexible plastic films, steel cans, and plastic bottles. PCM's under study are Mg(NO/sub 3/)/sub 2/.6H/sub 2/O, stearic acid, Mg(NO/sub 3/)/sub 2/.6H/sub 2/O-NH/sub 4/NO/sub 3/. A study of the storage capability of CaCl/sub 2/.6H/sub 2/O encapsulated in polyethylene bottles has been completed.
Date: March 1, 1978
Creator: Lane, G. A.; Warner, G. L.; Hartwick, P. B. & Rossow, H. E.
Partner: UNT Libraries Government Documents Department
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Encapsulation of hazardous wastes into agglomerates

Description: The objective of this study was to investigate the feasibility of using the cementitious properties and agglomeration characteristics of coal conversion byproducts to encapsulate and immobilize hazardous waste materials. The intention was to establish an economical way of co-utilization and co-disposal of wastes. In addition, it may aid in the eradication of air pollution problems associated with the fine-powdery nature of fly ash. Encapsulation into agglomerates is a novel approach of treating… more
Date: January 28, 1992
Creator: Guloy, A.
Partner: UNT Libraries Government Documents Department
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Detection and sizing of underbead cracks using ultrasonic nondestructive examination

Description: Ultrasonic nondestructive examination (NDE) will detect three mil deep underbead cracks in welds joining thin walled iridium hemishells. A correlation was developed to relate the amplitude of the signal reflected from the crack with crack wall area. The observed cracks occur in the weld underbead in the arc taper area during encapsulation of /sup 238/PuO/sub 2/ pellets for thermoelectric generators used in deep space exploration.
Date: February 11, 1982
Creator: Scarbrough, J.D. & Wierzbicki, W.M.
Partner: UNT Libraries Government Documents Department
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Uranium and Aluminosilicate Surface Precipitation Tests

Description: The 2H evaporator at the Savannah River Site has been used to treat an aluminum-rich waste stream from canyon operations and a silicon-rich waste stream from the Defense Waste Processing Facility. The formation of aluminosilicate scale in the evaporator has caused significant operational problems. Because uranium has been found to accumulate in the aluminosilicate solids, the scale deposition has introduced criticality concerns as well. The objective of the tests described in this report is to … more
Date: November 27, 2002
Creator: Hu, M.Z.
Partner: UNT Libraries Government Documents Department
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Mold-filling experiments for validation of modeling encapsulation. Part 1, "wine glass" mold.

Description: The C6 project 'Encapsulation Processes' has been designed to obtain experimental measurements for discovery of phenomena critical to improving these processes, as well as data required in the verification and validation plan (Rao et al. 2001) for model validation of flow in progressively complex geometries. We have observed and recorded the flow of clear, Newtonian liquids and opaque, rheologically complex suspensions in two mold geometries. The first geometry is a simple wineglass geometry in… more
Date: June 1, 2005
Creator: Castaneda, Jaime N.; Grillet, Anne Mary; Altobelli, Stephen A. (New Mexico Resonance, Albuquerque, NM); Cote, Raymond O. & Mondy, Lisa Ann
Partner: UNT Libraries Government Documents Department
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Modeling local chemistry in the presence of collective phenomena.

Description: Confinement within the nanoscale pores of a zeolite strongly modifies the behavior of small molecules. Typical of many such interesting and important problems, realistic modeling of this phenomena requires simultaneously capturing the detailed behavior of chemical bonds and the possibility of collective dynamics occurring in a complex unit cell (672 atoms in the case of Zeolite-4A). Classical simulations alone cannot reliably model the breaking and formation of chemical bonds, while quantum met… more
Date: January 1, 2005
Creator: Chandross, Michael Evan & Modine, Normand Arthur
Partner: UNT Libraries Government Documents Department
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Thin Film Packaging Solutions for High Efficiency OLED Lighting Products

Description: The objective of the 'Thin Film Packaging Solutions for High Efficiency OLED Lighting Products' project is to demonstrate thin film packaging solutions based on SiC hermetic coatings that, when applied to glass and plastic substrates, support OLED lighting devices by providing longer life with greater efficiency at lower cost than is currently available. Phase I Objective: Demonstrate thin film encapsulated working phosphorescent OLED devices on optical glass with lifetime of 1,000 hour life, C… more
Date: June 30, 2008
Partner: UNT Libraries Government Documents Department
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Low-Cost Solar Array (LSA) Project. Project quarterly report No. 9, April--June 1978

Description: Progress made by the Low-Cost Solar Array Project during the period April through June 1978 is described. It includes reports on silicon material processing, large-area silicon sheet development, encapsulation materials testing and development, project engineering and operations activities, and manufacturing techniques, plus the steps taken to integrate these efforts.
Date: January 1, 1978
Partner: UNT Libraries Government Documents Department
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Ion plating of solar cell arrays. Final report, March 12, 1977-December 31, 1978

Description: Endurex has been engaged in a feasibility study to determine practicality of utilizing Endurex ion plated films to serve as anti-reflective and/or protective encapsulants for solar cell arrays. It has been demonstrated that thin films of oxide materials between 1000 and 2000 A thick will protect a photovoltaic device from degradation in salt spray. Additionally, transmissively data accumulated on Endurex coatings show that the anti-reflective (AR) properties of this film are equal to any achiev… more
Date: January 1, 1978
Creator: Finegan, B.M.
Partner: UNT Libraries Government Documents Department
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Use of filler materials to aid spent nuclear fuel dry storage

Description: The use of filler materials (also known as stabilizer or encapsulating materials) was investigated in conjunction with the dry storage of irradiated light water reactor (LWR) fuel. The results of this investigation appear to be equally valid for the wet storage of fuel. The need for encapsulation and suitable techniques for closing was also investigated. Various materials were reviewed (including solids, liquids, and gases) which were assumed to fill the void areas within a storage can containi… more
Date: September 1, 1981
Creator: Anderson, K.J.
Partner: UNT Libraries Government Documents Department
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An experimental/analytical comparison of strains in encapsulated assemblies

Description: A combined experimental and analytical study of strains developed in encapsulated assemblies during casting, curing and thermal excursions is described. The experimental setup, designed to measure in situ strains, consisted of thin, closed-end, Kovar tubes that were instrumented with strain gages and thermocouples before being over-cast with a polymeric encapsulant. Four bisphenol A (three diethanolamine cured and one anhydride cured) epoxy-based materials and one urethane elastomeric material … more
Date: November 1, 1991
Creator: Guess, T.R. & Burchett, S.N.
Partner: UNT Libraries Government Documents Department
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LSA Project: technology development update

Description: Copies of the viewgraphs and a condensation of the comments by John V. Goldsmith and Donald B. Bickler of the LSA Project at its 10th Project Integration Meeting, August 16 and 17, 1978, at Caltech University, Pasadena, California, are presented. Their presentations focus on the state of the technology aimed at achieving the $500/kW goal by 1986.
Date: August 30, 1978
Creator: Goldsmith, J.V. & Bickler, D.B.
Partner: UNT Libraries Government Documents Department
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