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Milliwatt Generator Project

Description: This report covers progress on the Milliwatt Generator Project from April 1986 through March 1988. Activities included fuel processing and characterization, production of heat sources, fabrication of pressure-burst test units, compatibility studies, impact testing, and examination of surveillance units. The major task of the Los Alamos Milliwatt Generator Project is to fabricate MC2893A heat sources (4.0 W) for MC2730A radioisotope thermoelectric generators (RTGS) and MC3599 heat sources (4.5 W… more
Date: May 1, 1992
Creator: Latimer, T.W. & Rinehart, G.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Alternate materials of construction for geothermal applications. Progress report No. 14, July--September 1977

Description: A program to determine if non-metallic materials such as polymers, concrete polymer composites, and refractory cements can be utilized as materials of construction in geothermal processes is in progress. To date, several high temperature polymer concrete systems have been formulated, laboratory and field tests performed in brine, flashing brine, and steam at temperatures up to 260/sup 0/C (500/sup 0/F), and economic studies started. Laboratory data for exposure times > 2 years are available. Re… more
Date: September 1, 1977
Creator: Kukacka, L. E.; Fontana, J.; Zeldin, A.; Sugama, T.; Horn, W.; Carciello, N. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Long-term protection of uranium mill tailings

Description: US Environmental Protection Agency standards for the cleanup and disposal of inactive tailings sites require that control measures for disposal of tailings be designed to be effective for up to 1000 years if reasonably achievable, and, in any case, for 200 years at least. To control the escape of contaminants over such long periods, containment systems must be capable of adjusting to changing environmental conditions. Elements of a containment system include surface covers, biotic barriers, rad… more
Date: April 1, 1984
Creator: Beedlow, P. A. & Hartley, J. N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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MHD air heater development technology. Progress report, November 26, 1979-March 31, 1980

Description: Work on the development of the directly-fired high temperature air heater (HTAH) for MHD power plants is reported. Progress is reported on three tasks: (1) materials selection, evaluation, and development, (2) operability, performance, and materials testing, and (3) full-scale design concepts. Under Task 1, efforts were carried out in several areas. Work on the computer data base for material properties was begun. Data were compiled for several HTAH materials. Materials selections for Valve Tes… more
Date: May 1, 1980
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Milliwatt generator project: Progress report, April 1983--March 1984

Description: This report covers progress on the Milliwatt Generator Project during April 1983--March 1984. Activities included (plutonium 238 oxide) fuel processing and characterization, production of heat sources, fabrication of pressure-burst test units, compatibility studies, impact testing, examination of surveillance units, Inconel weld development, and qualilty assurance.
Date: May 1, 1988
Creator: Rinehart, G.H. & Latimer, T.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Thermal responses of tokamak reactor first walls during cyclic plasma burns

Description: The CINDA-3G computer code has been adapted to analyze the thermal responses and operating limitations of two fusion reactor first-wall concepts under normal cyclic operation. A component of an LMFBR computer has been modified and adapted to analyze the ablative behavior of first-walls after a plasma disruption. The first-wall design concepts considered are a forced-circulation water-cooled stainless steel panel with and without a monolithic graphite liner. The thermal gradients in the metal wa… more
Date: January 1, 1977
Creator: Smith, D. L. & Charak, I.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Wall power measurements of impurity radiation in ORMAK

Description: Time-resolved measurements of the power loss to the ORMAK liner were made using a pyroelectric detector. These measurements indicate that a large, relatively constant fraction (approximately 60 percent) of the electron power input is lost to the liner, rather than to the limiter, over a wide range of input powers (ohmic heating + neutral beam injection) and plasma conditions, and for most of the discharge duration. Most of this energy loss is due to impurity radiation peaked at about a third of… more
Date: January 1, 1977
Creator: Bush, C. E. & Lyon, J. F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Improvement of the mechanical reliability of monolithic refractory linings for coal gasification process vessels. Final report

Description: Eighteen heat-up tests were run on nine standard and experimental dual component monolithic refractory concrete linings. These tests were run with a five foot diameter by 14-ft high Pressure Vessel/Test Furnace designed to accommodate a 12-inch thick by 5-ft high refractory lining, heat the hot face to 2000/sup 0/F and expose the lining to air or steam pressures up to 150 psig. Results obtained from standard type linings in the test facility indicated that lining degradation duplicated that obs… more
Date: September 1, 1981
Creator: Potter, R.A. (comp.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Thermoelastic buckling of plates in a cylindrical geometry against an elastic back support. [LMFBR]

Description: A plate which is fixed at its edges to a strong edge support structure will develop large compressive stresses when heated from ambient temperature more rapidly than the support structure. Determining the response of the plate to this situation requires stability analysis to ascertain whether the plate might buckle, or whether the constrained thermal expansion will lead to compressive stresses exceeding the yield point because it did not buckle. A special case is considered here, both analytica… more
Date: January 1, 1980
Creator: Simmons, L. D. & Wierman, R. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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First wall thermal hydraulic models for fusion blankets

Description: Subject to normal and off-normal reactor conditions, thermal hydraulic models of first walls, e.g., a thermal mass barrier, a tubular shield, and a radiating liner are reviewed. Under normal operation the plasma behaves as expected in a predicted way for transient and steady-state conditions. The most severe thermal loading on the first wall occurs when the plasma becomes unstable and dumps its energy on the wall in a very short period of time (milliseconds). Depending on the plasma dump time a… more
Date: January 1, 1980
Creator: Fillo, J A
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Downhole steam generation: material studies

Description: One enhanced oil recovery technique for extracting heavy crude from deep reservoirs by steam at the bottom of an injection well. Development of a downhole steam generator that will produce steam and inject it into formations at depths greater than 2500 feet is one objective of a Department of Energy/Sandia National Laboratories development effort - Project DEEP STEAM. Extensive material studies have been performed in support of Project DEEP STEAM; current efforts are devoted primarily to the se… more
Date: January 1, 1982
Creator: Beauchamp, E.K.; Weirick, L.J. & Muir, J.F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Thermodynamic study of the MWG system/components and measurement of the oxygen partial pressure in the heat source capsule

Description: A thermodynamic study of the Milliwatt Generator heat source capsule was performed to determine the effects of the oxide fuel on container materials at elevated temperatures in order to evaluate the factors affecting embrittlement of T-111 alloy. The study indicates that relatively slow oxidation of the T-111 of the capsule occurs during pretreatment. Yttrium added to the /sup 238/PuO/sub 2/ fuel charge is functioning in its designed role as an oxygen getter and is stabilizing at an O/Pu ratio … more
Date: June 23, 1980
Creator: David, D.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Evaluation of refractory materials for a nuclear waste incinerator

Description: An experiment to find a suitable refractory lining for a nuclear waste incinerator has been completed. Eleven brick and six castable products were analyzed by optical and scanning microscopy. All the materials were fashioned into cup shapes and subjected to temperatures ranging from 800 to 1200/sup 0/C for as long as six weeks. Some of the cups were charged weekly with pellets made from ash materials that would contact an incinerator liner. Refractory products containing a high percentage of al… more
Date: July 21, 1980
Creator: Grotzky, V. K.; Kneale, P. A. & Teter, A. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Alternate materials of construction for geothermal applications. Progress report No. 13, April--June 1977

Description: A program to determine if non-metallic materials such as polymers, concrete polymer composites, and refractory cements can be utilized as materials of construction in geothermal processes is in progress. To date, several high temperature polymer concrete systems have been formulated, laboratory and field tests performed in brine, flashing brine, and steam at temperatures up to 260/sup 0/C, and economic studies started. Laboratory data for exposure times greater than 2 years are available. Resul… more
Date: June 1, 1977
Creator: Steinberg, M. & Kukacka, L. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Mechanical design of the Tandem Mirror Experiment Upgrade vacuum system

Description: The Tandem Mirror Experiment Upgrade (TMX Upgrade) vacuum system uses most of the vacuum system from the original TMX and substantially increases its capabilities. The vacuum system provides the main structure for the experimental apparatus, as well as providing and maintaining the vacuum environment. The vacuum vessel provides the structure supporting all magnets, as they are contained inside the vacuum vessel, all of the neutral-beam injectors, and the various diagnostics. The vessel provides… more
Date: September 24, 1981
Creator: Lang, D. D.; Calderon, M. O.; Thomas, S. R. & Garner, D. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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LASL fast liner experiment

Description: The LASL Fast Liner Experiment explores a fusion concept in which a prepared plasma is adiabatically compressed to thermonuclear temperatures and densities by a rapidly imploding solid metal liner. A prepared plasma having ..beta.. > 1 is in contact with the liner and end plugs, and contains an embedded magnetic field to inhibit thermal conduction. Cylindrical liners are magnetically imploded by a large axial current carried in the liner shell. Theoretical estimates indicate an implosion veloci… more
Date: January 1, 1980
Creator: Sherwood, A. R.; Cantrell, E. L.; Henins, I.; Hoida, H. W.; Jarboe, T. R.; Malone, R. C. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Evaluation of selected chemical processes for production of low-cost silicon: Phase III. Silicon Material Task, Low-Cost Solar Array Project. Sixteenth/seventeenth quarterly progress report, July-December 31, 1979

Description: The method under development for the production of semiconductor grade silicon is based on the zinc vapor reduction of silicon tetrachloride in a fluidized bed of seed particles. Construction of the PDU was completed during the report period, the fluidized-bed reactor was coated internally with silicon/SiC, and the operation of several systems was checked out. However, problems with the zinc feed system, unrelated to its basic operability, delayed introduction of zinc vapor to the PDU. At the e… more
Date: March 7, 1980
Creator: Blocher, J.M. Jr. & Browning, M.F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effects of alternate fuels. Report No. 2. Analysis of basic refractories degraded by residual oil combustion products

Description: Industrial conversion in the U.S. to alternate fuels from natural gas is presently under way and will accelerate rapidly as a result of gas curtailments and National policy considerations. Currently the prime alternate fuels are distillate and residual oils and coal. Conversion to residual oils or coal for high-temperature process heat applications is anticipated to result in accelerated refractory and insulation corrosion and degradation due to reactions between fuel impurities and the ceramic… more
Date: February 1, 1978
Creator: Wei, G. C. & Tennery, V. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Liner-concrete heat transfer study for nuclear power plant containments. [BWR; PWR]

Description: Containment liner-concrete interface heat transfer phenomena are investigated. In particular, the effects of thermal radiation and natural convection heat transfer as well as the effects of anchors on the liner-concrete conductance are studied. The need for a thorough structural analysis to determine the spatial distribution of the gap between the liner and concrete has been found to be necessary before the liner-concrete conductance can be accurately defined. A reasonable minimum value for a o… more
Date: January 1, 1978
Creator: Gido, R.G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Nuclear-waste-management. Quarterly progress report, July-September 1981

Description: Progress reports and summaries are presented for the following: high-level waste process development, alternate waste forms; TMI zeolite vitrification demonstration program; nuclear waste materials characterization center; TRU waste immobilization; TRU waste decontamination; krypton implantation; thermal outgassing; iodine-129 fixation; NWVP off-gas analysis; monitoring and physical characterization of unsaturated zone transport; well-logging instrumentation development; verification instrument… more
Date: December 1, 1981
Creator: Chikalla, T. D. & Powell, J. A. (comps.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Leak detection systems for uranium mill tailings impoundments with synthetic liners

Description: This study evaluated the performance of existing and alternative leak detection systems for lined uranium mill tailings ponds. Existing systems for detecting leaks at uranium mill tailings ponds investigated in this study included groundwater monitoring wells, subliner drains, and lysimeters. Three alternative systems which demonstrated the ability to locate leaks in bench-scale tests included moisture blocks, soil moisture probes, and a soil resistivity system. Several other systems in a devel… more
Date: September 1, 1983
Creator: Myers, D.A.; Tyler, S.W.; Gutknecht, P.J. & Mitchell, D.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Welding superalloy sheet for superconducting cable jackets

Description: Autogenous gas tungsten arc welds produced in A-286 exhibit significantly lower yield and ultimate tensile strengths than comparably heat-treated base metal. Deformation in the aged weld metal is highly localized and delineates the dendritic microstructure. The observed mechanical properties are caused by the formation of precipitate-free regions located at the dendrite cores. These regions form as the result of titanium segregation during weld pool solidification which yields dendrite cores su… more
Date: August 1, 1983
Creator: Summers, L.T.; Strum, M.J. & Morris, J.W. Jr.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Test and evaluate the TRI-GAS Low-Btu Coal Gasification Process. Quarterly report, January-March 1980

Description: New silicon carbide liners were cast for all three reactor vessels. The new liners will facilitate installation of the new reactor heaters and make possible a better seal between the heaters and vessel internals. Globar heating elements were received, cut to length, and installed on the new silicon carbide vessel liners in Stages 2 and 3. The heater for Stage 1 was reassembled on the new silicon carbide liner and installed in the vessel. Preliminary tests were made following the installation of… more
Date: April 1, 1980
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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