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Low-Cost Solar Array Project. Progress report 14, August 1979-December 1979 and proceedings of the 14th Project Integration Meeting

Description: Progress made by the Low-Cost Solar Array Project during the period August through November 1979, is described. Progress 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 the steps taken to integrate these efforts are detailed. A report on the Project Integration Meeting held December 5-6, 1979, including copies of the visual materials used, … more
Date: January 1, 1980
Partner: UNT Libraries Government Documents Department
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Interactions of tailings leachate with local liner materials found at Canonsburg, Pennsylvania.

Description: The mill tailings site at Canonsburg, Pennsylvania is the first mill site to receive remedial action under the Department of Energy's Uranium Mill Tailings Remedial Action Program. Part of this remedial action will require excavating the 53,500 m/sup 3/ (70,000 yd/sup 3/) of tailings on the site having a specific activity exceeding 100 pCi/g, and encapsulating these contaminated tailings in a clay-lined cell. As part of the remedial action effort, Pacific Northwest Laboratory has been studying … more
Date: April 1, 1984
Creator: Dodson, M.E.; Gee, G.W. & Serne, R.J.
Partner: UNT Libraries Government Documents Department
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Energy dependence of metallic-encapsulated thermoluminescent dosimeters. Annual report

Description: The gamma-ray energy responses of encapsulated /sup 7/LiF and CaF/sub 2/:Mn thermoluminescent dosimeters were measured and compred to calculated values. This study was performed in order to improve the accuracy of gamma-ray heating measurements made in polyenergetic gamma-ray fields such as Argonne National Laboratory's Zero Power Reactors. Equations used in the development of the TERC/III computer code and code input parameters are specified. A section on TLD precision is also included. Compar… more
Date: June 1980
Creator: Simons, G. G.
Partner: UNT Libraries Government Documents Department
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Multi-transducer dummy unit evaluation of polystyrene bead foam as an encapsulant for electronic packages

Description: A dummy electronic assembly without electronic components was used to measure loadings and deflections caused by 0.2, 0.3, 0.4, 0.5 and 0.6 g/cm/sup 3/ densities of polystyrene bead foam during fusion and thermal cycling. Previously developed and proven transducers showed that the lower three densities caused low and safe loads and deflections, but that the highest two densities must be used with care for fragile electronic components.
Date: September 1, 1980
Creator: Swanson, G. D.
Partner: UNT Libraries Government Documents Department
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/sup 238/Pu fuel-form processes. Quarterly report, October-December 1981

Description: Progress in the Savannah River /sup 238/Pu Fuel Form Program is summarized. Work during this period concentrated on the extensive cracking of the /sup 238/PuO/sub 2/ fuel form prior to encapsulation in the iridium containment shell for heat sources. This cracking results in increased recycle cost and decreased production efficiency. To better understand this cracking, Savannah River Laboratory (SRL) has made an extensive review of the development of /sup 238/PuO/sub 2/ fuel forms from small-sca… more
Date: May 1, 1982
Partner: UNT Libraries Government Documents Department
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Thin film polycrystalline silicon solar cells

Description: During the present quarter efficiency of heterostructure solar cells has been increased from 13 to 13.7% for single crystal and from 10.3 to 11.2% for polysilicon. For polysilicon the improvements can be attributed to reductions in grid-area coverage and in reflection losses and for single crystal to a combination of reduction in grid-area coverage and increase in fill factor. The heterostructure cells in both cases were IT0/n-Si solar cells. Degradation in Sn0/sub 2//n-Si solar cells can be gr… more
Date: January 1, 1980
Creator: Ghosh, A. K.; Feng, T.; Eustace, D. J. & Maruska, H. P.
Partner: UNT Libraries Government Documents Department
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Development and testing of matrices for the encapsulation of glass and ceramic nuclear waste forms.

Description: This report details the results of research on the matrix encapsulation of high level wastes at PML over the past few years. The demonstrations and tests described were designed to illustrate how the waste materials are effected when encapsulated in an inert matrix. Candidate materials evaluated for potential use as matrices for encapslation of pelletized ceramics or glass marbles were categorized into four groups: metals, glasses, ceramics, and graphite. Two processing techniques, casting and … more
Date: February 1, 1982
Creator: Wald, J. W.; Brite, D. W.; Gurwell, W. E.; Buckwalter, C. Q.; Bunnell, L. R.; Gray, W. J. et al.
Partner: UNT Libraries Government Documents Department
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Ion-plating of solar cell arrays encapsulation task, LSA Project 32. First quarterly progress report, December 1979-March Jun 1980

Description: Ion-plating is a vacuum metallizing process where the depositant is evaporated from a source (tungsten filament, electron beam gun, etc.) into a high frequency electric field where the material is ionized and then accelerated by a DC field toward the substrate. This process combines the high deposition rates associated with physical vapor deposition and improved adhesion without entrapment of Ar gas (as in sputtering). The ITW contract was initiated in December 1979 to investigate, develop, and… more
Date: January 1, 1980
Creator: Conley, W. R.
Partner: UNT Libraries Government Documents Department
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Heliostat mirror survey and analysis

Description: The mirrors used on concentrating solar systems must be able to withstand severe and sustained environmental stresses for long periods of time if they are to be economically acceptable. Little is known about how commercially produced wet process silvered second surface mirrors will withstand the test of time in solar applications. Field experience in existing systems has shown that the performance of the reflective surface varies greatly with time and is influenced to a large extent by the cons… more
Date: September 1, 1979
Creator: Lind, M. A.; Buckwalter, C. Q.; Daniel, J. L.; Hartman, J. S.; Thomas, M. T. & Pederson, L. R.
Partner: UNT Libraries Government Documents Department
open access

Moisture penetration evaluation of polystyrene bead foam as an encapsulant for electronic packages

Description: Discs of polystyrene bead foam were used to measure resistance to high-pressure moisture penetration. Densities of 0.2, 0.3, 0.4, 0.5, and 0.6 g/cm/sup 3/ processed at various fusion times and temperatures were tested. Only three fusion conditions for 0.6 g/cm/sup 3/ density were impervious to moisture penetration at 1724 kPa for 24 hours or more.
Date: June 1, 1980
Creator: Swanson, G. D.
Partner: UNT Libraries Government Documents Department
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Process development for automated solar cell and module production. Task 4: automated array assembly

Description: The scope of work under this contract involves specifying a process sequence which can be used in conjunction with automated equipment for the mass production of solar cell modules for terrestrial use. This process sequence is then critically analyzed from a technical and economic standpoint to determine the technological readiness of each process step for implementation. The process steps are ranked according to the degree of development effort required and according to their significance to t… more
Date: June 30, 1980
Creator: Hagerty, J.J.
Partner: UNT Libraries Government Documents Department
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Mechanical properties of polystyrene bead encapsulation foam

Description: The tensile and compressive properties of polystyrene bead foam used as an encapsulant for electronic devices were determined for densities ranging from 0.3 to 0.6 g/cm/sup 3/. Data were generated for these properties at -54, 25, and 74/sup 0/C. Data previously reported for 0.2 g/cm/sup 3/ are included.
Date: March 1, 1980
Creator: Fossey, D.J.
Partner: UNT Libraries Government Documents Department
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Strontium heat source development program. Advanced Nuclear Systems and Projects Division, quarterly report, January-March 1980

Description: Sectioning of the capsules from the 30,000-h tests with /sup 90/SrF/sub 2/ has been completed at Oak Ridge National Laboratory, and examination of the test specimens is under way. Metallographic examination of specimens taken from the WESF /sup 90/SrF/sub 2/ capsule that was held at about 800/sup 0/C for three years has been completed. Attack of the Hastelloy C-276 was not significantly greater than that observed in the WESF capsule held at 800/sup 0/C for 5000 hours. Hydrostatic pressure testi… more
Date: April 1, 1980
Creator: Fullam, H. T.
Partner: UNT Libraries Government Documents Department
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Testing and evaluation of doubly impacted simulant-fueled Milliwatt Generator heat sources

Description: As part of the Milliwatt Generator (MWG) Program, 12 simulant-fueled heat sources were fabricated double impact tested, and evaluated at Mound. Ten assemblies were tested at approx. 80 m/sec, and two were tested at approx. 105 m/sec. None of the strength members were breached; therefore, no fuel would have been released as a result of double impacts at the velocities and orientations tested at 450/sup 0/C. There was little difference in results for duplicate tests conducted approx. 80 and appro… more
Date: April 9, 1982
Creator: Teaney, P. E.; Cartmill, W. B. & Wise, R. L.
Partner: UNT Libraries Government Documents Department
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Photovoltaic-module encapsulation design and materials selection: Volume 1

Description: Encapsulation-material system requirements, material-selection criteria, and the status and properties of encapsulation materials and processes available to the module manufacturer are presented in detail. Technical and economic goals established for photovoltaic modules and encapsulation systems and their status are described for material suppliers to assist them in assessing the suitability of materials in their product lines and the potential of new-material products. A comprehensive discuss… more
Date: June 1, 1982
Creator: Cuddihy, E.; Carroll, W.; Coulbert, C.; Gupta, A. & Liang, R.
Partner: UNT Libraries Government Documents Department
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Polymers in solar technologies: an R and D strategy

Description: The use of polymers can increase the cost-effectiveness of solar technologies. The potential impact of polymers may be enhanced earlier if R and D is carried out according to a plan. The purpose of this plan is to present a five-year program consisting of 20 tasks categorized into six major problem areas: response to combined stresses; photochemistry; permeability/adhesion; surface properties; mechanical properties; and development of polymers. A budget required for each task is estimated and s… more
Date: July 1, 1980
Creator: Carroll, W.F. & Schissel, P.
Partner: UNT Libraries Government Documents Department
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Flight-Systems Safety Program, April 1982. Progress report

Description: This technical monthly report covers studies related to the use of /sup 238/PuO/sub 2/ in radioisotope power systems carried out for the Office of Coordination and Special Projects of the US Department of Energy by Los Alamos National Laboratory. Most of the studies discussed here are ongoing. Results and conclusions described may change as the work continues. Published reference of the results cited in this report should not be made without the explicit permission of the person in charge of th… more
Date: July 1, 1982
Creator: Bronisz, S. E.
Partner: UNT Libraries Government Documents Department
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Reentry thermal testing of a general purpose heat source fueled clad

Description: A General Purpose Heat Source (GPHS) module was exposed to heat treatments simulating an isothermal prelaunch condition, followed by thermal pulses corresponding to atmospheric reentry. Helium release rates were determined during each heating and modeled after simple diffusion theory. Following the tests, the module was examined metallurgically with no evidence of swelling of the cladding nor degradation of the fuel.
Date: March 1, 1982
Creator: Peterson, D. E. & Frantz, C. E.
Partner: UNT Libraries Government Documents Department
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Integral glass encapsulation for solar arrays. Fifth quarterly report

Description: This is a program to develop integral glass encapsulation for solar cell arrays. The status of development to establish techniques for employing electrostatic bonding in conjunction with terrestrial solar cells is described.
Date: November 1, 1977
Creator: Younger, P.
Partner: UNT Libraries Government Documents Department
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