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Compatibility of Pentaborane With Materials Used for Seals, Gaskets, and Construction

Description: Memorandum presenting the compatibility of pentaborane with aluminum foil, 24S-T and 17S-T aluminum, and 50-50 tin-lead solder in the range of -30 to -50 degrees F for 7 hours, at 90 degrees F for 6.5 hours, and at 70 degrees F for 28 days. Results were evaluated by determination of the loss in weight after the test period, metallographic inspection, and comparison with blanks carried through test conditions without exposure to the liquid. The evaluation of results was made by visual inspection… more
Date: July 19, 1954
Creator: Kaye, Samuel & Sordyl, Frank V.
Partner: UNT Libraries Government Documents Department
open access

Infrastructure and interfaces for large-scale numerical software.

Description: The complexity of large-scale scientific simulations often necessitates the combined use of multiple software packages developed by different groups in areas such as adaptive mesh manipulations, scalable algebraic solvers, and optimization. Historically, these packages have been combined by using custom code. This practice inhibits experimentation with and comparison of multiple tools that provide similar functionality through different implementations. The ALICE project, a collaborative effort… more
Date: June 10, 1999
Creator: Freitag, L.; Gropp, W. D.; Hovland, P. D.; McInnes, L. C. & Smith, B. F.
Partner: UNT Libraries Government Documents Department
open access

Mixed waste chemical compatibility: A testing program for plastic packaging components

Description: The purpose of hazardous and radioactive materials packaging is to enable these materials to be transported without posing a threat to the health or property of the general public. To achieve this aim, regulations in the United States have been written establishing general design requirements for such packagings. While no regulations have been written specifically for mixed waste packaging, regulations for the constituents of mixed wastes, i.e., hazardous and radioactive substances, have been c… more
Date: December 1, 1995
Creator: Nigrey, P. J.
Partner: UNT Libraries Government Documents Department
open access

Determination of blowout pressures during electron beam welding

Description: During electron beam (EB) welding of developmental units, weld blowouts occurred. It is well documented that the presence of moisture causes the weld blowout. The detrimental effects of water vapor on the weld are experimentally proven [l]. The availability of water vapor in the melt increases the onset and severity of blowout and porosity. Because water vapor is insoluble in the molten metal, it will consequently form either bubbles or boil. On the other hand, hydrogen will react with other im… more
Date: April 1999
Creator: Sunwoo, A.
Partner: UNT Libraries Government Documents Department
open access

Compatibility of refrigerants and lubricants with motor materials under retrofit conditions

Description: Compatibility tests were conducted on motor materials to determine whether exposure to the original refrigerant/mineral oil would affect compatibility of the motor materials with the alternative refrigerant/lubricant after retrofit. The motor materials were exposed at elevated temperature to the original refrigerant and mineral oil for 500 hours, followed by exposure to the alternative refrigerant and lubricant for 500 hours. Motor materials exposed to the alternative refrigerant and lubricant … more
Date: December 1, 1995
Creator: Doerr, R. G. & Waite, T. D.
Partner: UNT Libraries Government Documents Department
open access

Assembly conductance measurements: halthane vent path testing

Description: The purpose of this test was to characterize the conductance of different configurations of vent paths put into weapons assemblies through application of Halthane 88-3 precoats onto the parts. Conductance is a measure of the ease of gas flow in an assembly. It is the inverse of resistance which may be more familiar to most readers. It is defined as the resultant of the gas flow (torr-1/sec) divided by the pressure drop (torr) in the assembly. Its dimensions are thus liters per second. The condu… more
Date: March 26, 1999
Creator: Beat, T G & Kervin, J E
Partner: UNT Libraries Government Documents Department
open access

Integratible Process for Fabrication of Fluidic Microduct Networks on a Single Wafer

Description: We present a microelectronics fabrication compatible process that comprises photolithography and a key room temperature SiON thin film plasma deposition to define and seal a fluidic microduct network. Our single wafer process is independent of thermo-mechanical material properties, particulate cleaning, global flatness, assembly alignment, and glue medium application, which are crucial for wafer fusion bonding or sealing techniques using a glue medium. From our preliminary experiments, we have … more
Date: September 7, 1999
Creator: Matzke, C. M.; Ashby, C. I.; Bridges, M. M.; Griego, L. & Wong, C. C.
Partner: UNT Libraries Government Documents Department
open access

X-Ray Characterization of Resistor/Dielectric Material for Low Temperature Co-Fired Ceramic Packages

Description: High temperature XRD has been employed to monitor the devitrification of Dupont 951 low temperature co-fired ceramic (LTCC) and Dupont E84005 resistor ink. The LTCC underwent devitrification to an anorthite phase in the range of 835-875 C with activation energy of 180 kJ/mol as calculated from kinetic data. The resistor paste underwent devitrification in the 835-875 C range forming monoclinic and hexagonal celcian phases plus a phase believed to be a zinc-silicate. RuO{sub 2} appeared to be sta… more
Date: September 8, 1999
Creator: Dimos, Duane B.; Kotula, Paul G.; Rodriguez, Mark A. & Yang, Pin
Partner: UNT Libraries Government Documents Department
open access

CRT compatibility evaluation of LX-16 and Halthane 73-18

Description: A preliminary compatibility study was carried out between the plastic-bonded PETN-based high explosive LX-16 and the adhesive Halthane 73-18. The work, based on the Chemical Reactivity Test (CRT), used non-standard times and temperatures to find conditions corresponding to accelerated decomposition. This study is a prequel to a more comprehensive isothermal and thermal cycling study that will include both material evaluation and test fire.
Date: August 24, 1999
Creator: Foltz, M F; Reyes, P & Foster, P A
Partner: UNT Libraries Government Documents Department
open access

Chemical and chemically-related considerations associated with sluicing tank C-106 waste to tank AY-102

Description: New data on tank 241-C-106 were obtained from grab sampling and from compatibility testing of tank C-106 and tank AY-102 wastes. All chemistry-associated and other compatibility Information compiled in this report strongly suggests that the sluicing of the contents of tank C-106, in accord with appropriate controls, will pose no unacceptable risk to workers, public safety, or the environment. In addition, it is expected that the sluicing operation will successfully resolve the High-Heat Safety … more
Date: April 4, 1997
Creator: Reynolds, Dan A.
Partner: UNT Libraries Government Documents Department
open access

Alpha irradiation modeling

Description: With the end of the Cold War and the associated limitations imposed on the nuclear weapons stockpile by strategic arms treaties, much has changed in the stockpile stewardship program. Weapons that were originally designed for stockpile lives on the order of 15 to 20 years are now being evaluated for much longer periods: in some cases as much as 60 years. As such, issues that were once considered to be of no consequence are being reexamined. Among these is the extent of the radiation dose receiv… more
Date: March 26, 1999
Creator: Keeton, S C & Mount, M E
Partner: UNT Libraries Government Documents Department
open access

MALDI analysis of estane degradation

Description: SEUMALDI has been successfully used to accurately measure the MW of hydrolysis degradation products from Estane 5703. Reasonable structure assignments have been made to the degradation products and several observations reported. Most of the low MW degradation peaks have been identified as ester hydrolysis fragments. The data suggest that the polyester macrodiol may be shorter than the {approximately}2000 amu reported by the manufacturer. Experiments are ongoing to determine if hydrolysis occurs… more
Date: March 26, 1999
Creator: Haining, Helen Ji; Kober, E. M.; LeMay, James D.; Mays, Jimmy; Nonidez, William; Overturf, George E., III et al.
Partner: UNT Libraries Government Documents Department
open access

Tank 241-AP-103, grab sample 3AP-97-1 analytical results for the final report

Description: This document is the final analytical laboratory report for the tank 241-AP-103 grab sample. One grab sample was collected from Riser 1{at}90{sup o} on March 19, 1997. Analyses were performed to verify compliance status with corrosion control criteria in accordance with the Letter of Instruction for Tank 241-AP-103 Grab Sample Analyses (LOI) (Field, 1997), the Compatibility Grab Sampling and Analysis Plan (TSAP) (Sasakid, 1997) and the Data Quality Objectives for Tank Farms Waste Compatibility … more
Date: April 23, 1997
Creator: Esch, R.A.
Partner: UNT Libraries Government Documents Department
open access

Development and compatibility of magnesium matrix fuel plates clad with 6061 aluminum alloy.

Description: Aluminum (Al) is a commonly used matrix for research reactor fuel plates. It has been found that a reaction between the fuel and the aluminum matrix may reduce or increase the irradiation stability of the fuel. To further understand the contribution of the reaction to the irradiation stability, experiments to develop a non-reacting matrix were performed. The work focused on magnesium (Mg), which is an excellent non-reacting matrix candidate and has a neutron absorption coefficient similar to Al… more
Date: October 22, 1998
Creator: Wiencek, T. C.
Partner: UNT Libraries Government Documents Department
open access

Gas-to-liquids synthetic fuels for use in fuel cells : reformability, energy density, and infrastructure compatibility.

Description: The fuel cell has many potential applications, from power sources for electric hybrid vehicles to small power plants for commercial buildings. The choice of fuel will be critical to the pace of its commercialization. This paper reviews the various liquid fuels being considered as an alternative to direct hydrogen gas for the fuel cell application, presents calculations of the hydrogen and carbon dioxide yields from autothermal reforming of candidate liquid fuels, and reports the product gas com… more
Date: September 8, 1999
Creator: Ahmed, S.; Kopasz, J. P.; Russell, B. J. & Tomlinson, H. L.
Partner: UNT Libraries Government Documents Department
open access

Solid phase microextraction analysis of B83 SLTS and Core B compatibility test units

Description: Solid phase microextraction has permitted the efficient collection and analysis of a broad range of volatile and semivolatile compounds outgassed from materials. In 1998, we implemented a microextraction protocol at Mason and Hanger, Pantex Plant, for the analysis of weapons and compatibility test units. The chemical information that was obtained from this work is interpreted by determining the source and outgas mechanism for each compound in the weapon signature, which is a task only accomplis… more
Date: March 26, 1999
Creator: Chambers, D M; Ithaca, J; King, H A & Malcolm, S
Partner: UNT Libraries Government Documents Department
open access

The development of Sn-Li coolant/breeding material for APEX/ALPS applications.

Description: A Sn-Li alloy has been identified to be a coolant/breeding material for D-T fusion applications. The key feature of this material is its very low vapor pressure, which will be very useful for free surface concepts employed in APEX, ALPS and inertial confinement fission. The vapor is dominated by lithium, which has very low Z. Initial assessment of the material indicates acceptable tritium breeding capability, high thermal conductivity, expected low tritium volubility, and expected low chemical … more
Date: July 8, 1999
Creator: Sze, D.-K.
Partner: UNT Libraries Government Documents Department
open access

Effects of Hanford tank simulant waste on plastic packaging to components

Description: We have developed a chemical compatibility program for the evaluation of plastic packaging components which may be incorporated in packaging for transporting mixed waste forms. Consistent with the methodology outlined in this paper, we have performed the second phase of this experimental program to determine the effects of simulant Hanford Tank mixed wastes on packaging materials. This effort involved the comprehensive testing of five plastic liner materials in the aqueous mixed waste simulant.… more
Date: December 1, 1995
Creator: Nigrey, P. J. & Dickens, T. G.
Partner: UNT Libraries Government Documents Department
open access

Oxidative Mineralization and Characterization of Polyvinyl Alcohol Solutions for Wastewater Treatment

Description: The principal objectives of this study are to identify an appropriate polyvinyl alcohol (PVA) oxidative mineralization technique, perform compatibility and evaporation fate tests for neat and mineralized PVA, and determine potential for PVA chemical interferences which may affect ion exchange utilization for radioactive wastewater processing in the nuclear industry.
Date: August 31, 1999
Creator: Oji, L.N.
Partner: UNT Libraries Government Documents Department
open access

Novel Fabrication and Simple Hybridization of Exotic Material MEMS

Description: Work in materials other than silicon for MEMS applications has typically been restricted to metals and metal oxides instead of more ''exotic'' semiconductors. However, group III-V and II-VI semiconductors form a very important and versatile collection of material and electronic parameters available to the MEMS and MOEMS designer. With these materials, not only are the traditional mechanical material variables (thermal conductivity, thermal expansion, Young's modulus, etc.) available, but also c… more
Date: November 13, 1999
Creator: Datskos, P. G. & Rajic, S.
Partner: UNT Libraries Government Documents Department
open access

CRT compatibility evaluation of LX-16 and Halthane 73-18

Description: A preliminary compatibility study was carried out between the plastic-bonded PETN- based high explosive LX-16 and the adhesive Halthane 73-l 8. The work, based on the Chemical Reactivity Test (CRT), used non-standard times and temperatures to find conditions corresponding to accelerated decomposition. This study is a prequel to a more comprehensive isothermal and thermal cycling study that will include both material evaluation and test tire.
Date: March 26, 1999
Creator: Foltz, M F & Foster, P A
Partner: UNT Libraries Government Documents Department
open access

U.S. Assessment of advanced limiter-divertor plasma-facing systems (ALPS) design, analysis, and R and D needs.

Description: The purpose of the ALPS program is to identify and evaluate advanced limiter/diverter systems that will enhance the attractiveness of fusion power. The highest priority goals at present are achieving high power density, up to 50 MW/m{sup 2}, and showing compatibility of plasma-facing surfaces with plasma operation. Personnel representing a wide range of disciplines from a number of institutions are engaged in the program, where an evaluation phase of the program is planned for three years. Succ… more
Date: June 17, 1998
Creator: Mattas, R. F.
Partner: UNT Libraries Government Documents Department
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