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Accelerometer and strain gage evaluation

Description: This document describes the method developed by Sandia National Laboratories (SNL) to evaluate transducer used in the design certification testing of nuclear material shipping packages. This testing project was performed by SNL for the Office of Civilian Radioactive Waste Management (OCRWM). This evaluation is based on the results of tests conducted to measure ruggedness, failure frequency, repeatability, and manufacturers' calibration data under both field and laboratory conditions. The result… more
Date: June 19, 1991
Creator: Ammerman, D. J.; Madsen, M. M.; Uncapher, W. L.; Stenberg, D. R. & Bronowski, D. R.
Partner: UNT Libraries Government Documents Department
open access

Argon Dewar Relief Set Pressure Modifications

Description: This engineering note documents the calculations of Kelly Dixon, used to determine the maximum allowable set pressure for the argon dewar low relief valve, tag number PSV620A, Anderson Greenwood Type 526J. The original setting was 16 psig. This value was chosen in order to protect against cryostat overpressurization by the source dewar (see D0 Engineering Note 115), however, the following calculations will show that the set pressure can be raised to approximately 18.5 psig, which would result i… more
Date: March 19, 1991
Creator: Wu, J.
Partner: UNT Libraries Government Documents Department
open access

An atmospheric tritium release database for model comparisons

Description: A database of vegetation, soil, and air tritium concentrations at gridded coordinate locations following nine accidental atmospheric releases is described. While none of the releases caused a significant dose to the public, the data collected is valuable for comparison with the results of tritium transport models used for risk assessment. The largest, potential, individual off-site dose from any of the releases was calculated to be 1.6 mrem. The population dose from this same release was 46 per… more
Date: December 19, 1991
Creator: Murphy, C. E. Jr. & Wortham, G. R.
Partner: UNT Libraries Government Documents Department
open access

An atmospheric tritium release database for model comparisons

Description: A database of vegetation, soil, and air tritium concentrations at gridded coordinate locations following nine accidental atmospheric releases is described. While none of the releases caused a significant dose to the public, the data collected is valuable for comparison with the results of tritium transport models used for risk assessment. The largest, potential, individual off-site dose from any of the releases was calculated to be 1.6 mrem. The population dose from this same release was 46 per… more
Date: December 19, 1991
Creator: Murphy, C. E. Jr. & Wortham, G. R.
Partner: UNT Libraries Government Documents Department
open access

Base sequence effects on interactions of aromatic mutagens with DNA

Description: Within this period, we have completed our investigations on the thermodynamic characteristics and base sequence dependence of duplex formation of benzo(a)pyrene diol epoxide (BPDE) DNA adducts. Different 11-mer oligonucleotides containing covalently bound BPDE moieties at the exocyclic amino group of a single guanine base were utilized in these studies. Last year, in the three-year progress report, some preliminary data were discussed. A final account is provided here. New techniques were devel… more
Date: September 19, 1991
Creator: Geacintov, N.E.
Partner: UNT Libraries Government Documents Department
open access

The dependence of radiolytic H2 generation of the nitrate concentration in high-level solutions

Description: The rate at which hydrogen is produced from the radiolysis of high-activity waste solutions depends on the radiation dose rate to the solution and the concentration of nitrate ion in solution. At a constant dose rate, the hydrogen generation rate decreases as the nitrate ion concentration increases. Using previously measured rates of hydrogen production, an equation has been derived which calculates the hydrogen generation rate when the nitrate ion concentration is known. The hydrogen generatio… more
Date: November 19, 1991
Creator: Walker, D. D. & Bibler, N. E.
Partner: UNT Libraries Government Documents Department
open access

The dependence of radiolytic H2 generation of the nitrate concentration in high-level solutions

Description: The rate at which hydrogen is produced from the radiolysis of high-activity waste solutions depends on the radiation dose rate to the solution and the concentration of nitrate ion in solution. At a constant dose rate, the hydrogen generation rate decreases as the nitrate ion concentration increases. Using previously measured rates of hydrogen production, an equation has been derived which calculates the hydrogen generation rate when the nitrate ion concentration is known. The hydrogen generatio… more
Date: November 19, 1991
Creator: Walker, D. D. & Bibler, N. E.
Partner: UNT Libraries Government Documents Department
open access

Desert Shield and Desert Storm Implications for Future U.S. Force Requirements

Description: This preliminary assessment summarizes U.S. Army, Navy, Air Force, and Marine Corps performances during recent war, then relates it to past experience and potential threats in ways that might help decisionmakers determine the most suitable characteristics of U.S. armed forces for the rest of this decade.
Date: April 19, 1991
Creator: Collins, John M.
Partner: UNT Libraries Government Documents Department
open access

Development of improved iron Fischer-Tropsch catalysts

Description: The objective of proposed research is development of catalysts with enhanced slurry phase activity and better selectivity to fuel range products, through a more detailed understanding and systematic studies of the effects of pretreatment procedures and promoters/binders (silica) on catalyst performance.
Date: July 19, 1991
Creator: Bukur, D.B.
Partner: UNT Libraries Government Documents Department
open access

Development of improved iron Fischer-Tropsch catalysts. Quarterly technical progress report, 1 April 1991--30 June 1991

Description: The objective of proposed research is development of catalysts with enhanced slurry phase activity and better selectivity to fuel range products, through a more detailed understanding and systematic studies of the effects of pretreatment procedures and promoters/binders (silica) on catalyst performance.
Date: July 19, 1991
Creator: Bukur, D. B.
Partner: UNT Libraries Government Documents Department
open access

Ground wave propagation of a video pulse source: Part 2

Description: In a previous paper we developed a simple model describing the far-field from a video-pulse source near the ground and for grazing incidence. We report here on a recent field test in which we attempted to verify the model. Our results show quantitative agreement with the model for most of the tested parameter space. We have also extended our model to include all elevation angles, including up to vertical. The computed engagement envelope shows three distinct regions: At grazing angles the field… more
Date: July 19, 1991
Creator: Dreyer, K. A. & Buettner, H. M.
Partner: UNT Libraries Government Documents Department
open access

Hazards of using tantalum parts in a molten plutonium environment

Description: Tantalum experiences severe intergranular attack (IGA) when in contact with molten plutonium. This IGA of tantalum has produced part failures in crucibles used during Trident and molten salt extraction (MSE) runs and in two stirring rods used in MSE runs. These parts were used at temperatures ranging from 750{degrees}C to 900{degrees}C for a minimum time of 12 hours to a maximum time of 20 hours. 5 refs., 22 figs.
Date: October 19, 1991
Creator: Furr, J. S.
Partner: UNT Libraries Government Documents Department
open access

Maximum credible event determination for the surveillance powder samples and their handling containers

Description: An investigation was done to determine the maximum credible event value for samples of explosives and disassembled components up to 1.2 g when stored in conductive plastic vials as packaged and handled, stored, or transported at Mound. The test was performed at Test Firing, with photographs taken before and after the test. The standard propagation test setup was used; a vial containing 1.2 g of PETN (pentaerythritol tetranitrate) was surrounded by other like vials containing 1.2-g samples of PE… more
Date: September 19, 1991
Creator: Jones, R.B. & Cogan, J.D. Jr.
Partner: UNT Libraries Government Documents Department
open access

D-Zero Project Rotary Bayonet Assembly Test

Description: This report documents the testing of a rotating bayonet assembly. It provides the details of how the test was carried out and the results of the testing. The testing was done on a mock up of an 1 1/2-inch x 3-inch gaseous argon bayonet assembly designed to allow a translational movement of 40-inches. The test was necessary to provide a level of confidence in the design concept The testing was a success. It provided confidence that the bayonet assembly design will work for the 1 1/2-inch x 3-inc… more
Date: April 19, 1991
Creator: Rucinski, R.
Partner: UNT Libraries Government Documents Department
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