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Office of Scientific & Technical Information Technical Reports
4,192
Technical Report Archive and Image Library
510
USGS Topographic Map Collection
420
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363
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123
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105
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73
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39
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7
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235
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211
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207
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172
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134
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132
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5,858 Matching Results
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Alumina/silica multilayer coatings for excimer lasers
The coating parameter that most strongly influences optical damage resistance is the choice of materials used to produce a component. During the course of testing of hundreds of ultraviolet reflectors involving 12 different material combinations, multilayer stacks of Al/sub 2/O/sub 3//SiO/sub 2/ have demonstrated a superior ability to resist laser-induced damage. Further, damage thresholds for these coatings are at least twice as high as for reflectors composed of other materials. In particular, thresholds of 6 J/cm/sup 2/ at 248 nm (15 ns) and 12 J/cm/sup 2/ at 351 nm (12 ns) have been measured. Comparative results are presented for a variety of materials at both wavelengths as are preliminary results for alumina-based antireflective coatings.
Date:
January 1, 1983
Creator:
Foltyn, S. R. & Jolin, L. J.
Object Type:
Article
System:
The UNT Digital Library
Anahuac
Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:100000
Date:
1983
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Anahuac
Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:100000
Date:
1983
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Anahuac: Biological Resources
Map showing biological resources (birds, oysters, fishes, grasses, etc.) in the Anahuac region of the Texas Barrier Islands coastline area. Scale 1:100,000.
Date:
1983
Creator:
U.S. Fish and Wildlife Service
Object Type:
Map
System:
The UNT Digital Library
Anahuac: Mineral Resources and Selected Oil and Gas Infrastructure
Map showing mineral resources (oil, gas, sand, clay, etc.) in the Anahuac region of the Texas Barrier Islands coastline area. Scale 1:100,000.
Date:
1983
Creator:
U.S. Fish and Wildlife Service
Object Type:
Map
System:
The UNT Digital Library
Anahuac: Socioeconomic and Natural Features
Map showing various sites and features (recreation sites, water treatment facilities, public lands, historic sites, transportation, etc.) in the Anahuac region of the Texas Barrier Islands coastline area. Scale 1:100,000.
Date:
1983
Creator:
U.S. Fish and Wildlife Service
Object Type:
Map
System:
The UNT Digital Library
Analog Model Analysis of the North Coast Limestone Aquifers, Puerto Rico
This report presents an analysis of "three limestone aquifers on the north coast of Puerto Rico west of the RÍo de la Plata" using "analog modeling techniques."
Date:
1983
Creator:
Heisel, James E.; González, José R. & Cruz, Carlos
Object Type:
Report
System:
The UNT Digital Library
Analyses of soils at commercial radioactive waste disposal sites
Brookhaven National Laboratory, in order to provide technical assistance to the NRC, has measured a number of physical and chemical characteristics of soils from three commercial low-level radioactive waste disposal sites. Samples were collected from an area adjacent to the disposal site at Sheffield, IL, and from two operating sites: one at Barnwell, SC, and the other near Richland, WA. The soil samples, which were analyzed from each site, were believed to include soil which was representative of that in contact with buried waste forms. Results of field measurements of earth resistivity and of soil pH will be presented. Additionally, the results of laboratory measurements of resistivity, moisture content, pH, exchange acidity and the soluble ion content of the soils will be discussed. The soluble ion content of the soils was determined by analysis of aqueous extracts of saturated soil pastes. The concentrations of the following ions were determined: Ca/sup 2 +/, Mg/sup 2 +/, K/sup +/, Na/sup +/, HCO/sub 3//sup -/, CO/sub 3//sup 2 -/, SO/sub 4//sup 2 -/, Cl/sup -/, S/sup 2 -/.
Date:
January 1, 1983
Creator:
Piciulo, P.L.; Shea, C.E. & Barletta, R.E.
Object Type:
Article
System:
The UNT Digital Library
Analysis of anelastic relaxations controlled by a spectrum of relaxation times
Anelastic studies, although they have provided an important method for investigating the mobility of point defects in solids, have often been difficult to analyze when a continuous spectra of relaxation times controls the anelastic response. This paper describes a new method for obtaining accurate estimates of relaxation time spectra by direct analysis (without prior assumptions) of the data using a nonlinear regression method. Applications to internal friction and anelastic creep results are described with emphasis upon the internal friction technique. 5 references.
Date:
January 1, 1983
Creator:
Cost, J.R.
Object Type:
Article
System:
The UNT Digital Library
Analysis of BWR/Mark III drywell failure during degraded core accidents
The potential for a hydrogen detonation due to the accumulation of a large amount of hydrogen in the drywell region of a BWR Mark III containment is analyzed. Loss of integrity of the drywell wall causes a complete bypass of the suppression pool and leads to pressurization of the containment building. However, the predicted peak containment pressure does not exceed the estimates of containment failure pressure.
Date:
January 1, 1983
Creator:
Yang, J. W.
Object Type:
Article
System:
The UNT Digital Library
Analysis of forest environmental measurements to estimate parameters of microclimate and air-pollution deposition-velocity models
A method is described for estimating flux densities and deposition of gaseous pollutants for a period of a year or more, using data collected for a period of a few days. The estimates are based on models which characterize the transfer of gases from the atmosphere to the vegetation as a series of resistances and then use linear statistical submodels based on experimental data to relate the resistances to the surrounding environment. The models are shown to fit the experimental data reasonably well. Annual values calculated for a young loblolly pine plantation were: evaporation 63.2 cm, carbon dioxide exchange 31.5 t/ha, and sulfur dioxide exchange 120 gm/ha. 17 references.
Date:
January 1, 1983
Creator:
Murphy, C. E. Jr. & Lorenz, R.
Object Type:
Article
System:
The UNT Digital Library
Analysis of grid-assembly shielding of EBR-II
Differing neutron exposure rates to the EBR-II lower grid plenum assembly resulting from the historical changes in reactor configuration and shielding are analyzed to obtain the fluences and the steel displacements-per-atom values in this irreplaceable component.
Date:
January 1, 1983
Creator:
Meneghetti, D.; Franklin, F.C. & Kucera, D.A.
Object Type:
Article
System:
The UNT Digital Library
Analysis of HCDA loads and containment response of a large loop-type LMFBR
As part of a comprehensive safety study, analyses are presented on the hydrodynamic loads and containment response of a large loop-type LMFBR subjected to an HCDA of a 1000 MJ energy release. The reference reactor consists of a primary vessel, a head cover, and various complex internals such as the upper internal structure (UIS), the core-support structure (CSS), radial shield, shield baffles, and deflector plate. Three calculations are performed with the ANL hybrid Lagrangian-Eulerian containment code, ALICE-II. They deal, respectively, with: (1) the calculation of HCDA hydrodynamics, reactor-cover loads, and forces on the UIS; (2) investigating the mitigating effect of the UIS on the cover loading as well as the containment response; and (3) the analysis of overall containment integrity, including interaction of fluids with the deformable UIS and CSS.
Date:
January 1, 1983
Creator:
Wang, C. Y.; Zeuch, W. R.; Chang, Y. W. & Fistedis, S. H.
Object Type:
Article
System:
The UNT Digital Library
Analysis of loss of decay-heat-removal sequences at Browns Ferry Unit One
This paper summarizes the Oak Ridge National Laboratory (ORNL) report Loss of DHR Sequences at Browns Ferry Unit One - Accident Sequence Analysis (NUREG/CR-2973). The Loss of DHR investigation is the third in a series of accident studies concerning the BWR 4 - MK I containment plant design. These studies, sponsored by the Nuclear Regulatory Commission Severe Accident Sequence Analysis (SASA) program, have been conducted at ORNL with the full cooperation of the Tennessee Valley Authority (TVA). The purpose of the SASA studies is to predetermine the probable course of postulated severe accidents so as to establish the timing and the sequence of events. The SASA studies also produce recommendations concerning the implementation of better system design and better emergency operating instructions and operator training. The ORNL studies also include a detailed, best-estimate calculation of the release and transport of radioactive fission products following postulated severe accidents.
Date:
January 1, 1983
Creator:
Harrington, R. M.
Object Type:
Article
System:
The UNT Digital Library
Analysis of near-term spent fuel transportation hardware requirements and transportation costs
A computer model was developed to quantify the transportation hardware requirements and transportation costs associated with shipping spent fuel in the commercial nucler fuel cycle in the near future. Results from this study indicate that alternative spent fuel shipping systems (consolidated or disassembled fuel elements and new casks designed for older fuel) will significantly reduce the transportation hardware requirements and costs for shipping spent fuel in the commercial nuclear fuel cycle, if there is no significant change in their operating/handling characteristics. It was also found that a more modest cost reduction results from increasing the fraction of spent fuel shipped by truck from 25% to 50%. Larger transportation cost reductions could be realized with further increases in the truck shipping fraction. Using the given set of assumptions, it was found that the existing spent fuel cask fleet size is generally adequate to perform the needed transportation services until a fuel reprocessing plant (FRP) begins to receive fuel (assumed in 1987). Once the FRP opens, up to 7 additional truck systems and 16 additional rail systems are required at the reference truck shipping fraction of 25%. For the 50% truck shipping fraction, 17 additional truck systems and 9 additional rail systems …
Date:
January 1, 1983
Creator:
Daling, P. M. & Engel, R. L.
Object Type:
Report
System:
The UNT Digital Library
Analysis of PETT Images in Psychiatric Disorders
A quantitative method is presented for studying the pattern of metabolic activity in a set of Positron Emission Transaxial Tomography (PETT) images. Using complex Fourier coefficients as a feature vector for each image, cluster, principal components, and discriminant function analyses are used to empirically describe metabolic differences between control subjects and patients with DSM III diagnosis for schizophrenia or endogenous depression. We also present data on the effects of neuroleptic treatment on the local cerebral metabolic rate of glucose utilization (LCMRGI) in a group of chronic schizophrenics using the region of interest approach. 15 references, 4 figures, 3 tables.
Date:
January 1, 1983
Creator:
Brodie, J. D.; Gomez-Mont, F.; Volkow, N. D.; Corona, J. F.; Wolf, A. P.; Wolkin, A. et al.
Object Type:
Article
System:
The UNT Digital Library
Analysis of reactivity-insertion accidents in the TREAT Upgrade reactor
The expansion of the experimental capabilities of the TREAT Upgrade (TU) reactor also tends to increase the potential risks associated with off-normal reactivity insertion incidents compared to the TREAT reactor. To provide adequate prtection for the public and the facility, while meeting experimenter's requirements, a specialized Reactor Trip System (RTS) with energy-dependent scram trips on reactor power and period has been developed. With this protection strategy, the consequences of reactivity insertion accidents in the TU reactor have been analyzed using a general methodology developed earlier. Results of these analyses are presented.
Date:
January 1, 1983
Creator:
Rudolph, R.R. & Bhattacharyya, S.K.
Object Type:
Article
System:
The UNT Digital Library
Analysis of steam-line-break transient with RELAP5/MOD1. 5 and comparison to CESSAR. [PWR]
Section 15.1.5 of the Standard Review Plant outlines the areas of review and the acceptance criteria for the analysis of steam system piping failures inside and outside of containment. Combustion Engineering (C-E) submitted analysis of the limiting steam line break (SLB) transient for the C-E 3800 MW nuclear steam supply system as Appendix 15C to the CESSAR FSAR. Conservative initial conditions and analysis assumptions were utilized in the transient calculation which was performed with the CESEC-III computer program. Argonne National Laboratory (ANL), under contract to the Nuclear Regulatory Commission, performed audit calculations of SLB transients presented in the CESSAR FSAR, with RELAP5/MOD1.5 (Cycle 26) and compared them with the CE results. The transient presented here is a large steam line break during full power operation with a concurrent loss of offsite power. The objective of this study was to examine the impact of mixing of cold primary fluid returning to the core from the affected steam generator with the hot fluid returning from the intact side, and its effect upon the potential return to power due to moderator feedback.
Date:
January 1, 1983
Creator:
Peeler, G.B.; Caraher, D.L. & Guttmann, J.
Object Type:
Article
System:
The UNT Digital Library
Analysis of Sweet Lake geopressured-geothermal aquifer
The Sweet Lake geopressured-geothermal aquifer, located southeast of Lake Charles, Louisiana, is an aquifer modeled by a two-dimensional geopressured-geothermal simulator. This aquifer is a sandstone within the Frio formation at depths between 15,000 to 15,640 ft with a net porous thickness of 250 ft, a calculated in-situ permeability (from drawdown data) of 17 md, an estimated porosity of 24 percent, a uniaxial compaction coefficient of 4.5 x 10/sup -7/ psi/sup -1/ and a solution gas-water ratio of 11 SCF/STB all at the initial reservoir pressure of 12,060 psi. These parameters are typically pressure sensitive in geopressured-geothermal aquifers and are critically important to aquifer performance. Several simulation experiments are conducted which investigate the effects of varying initial values for these parameters with the experimentally determined values as means. The simulations give both optimistic and pessimistic expectations for aquifer performance. The expected life of the geopressured-geothermal well is reported for each simulation.
Date:
January 1, 1983
Creator:
Andrade, M.; Rago, F. M.; Ohkuma, H.; Sepehrnoori, K.; Peters, E. & Dorfman, M.
Object Type:
Report
System:
The UNT Digital Library
Analysis of the ANO-2 turbine trip test
The start-up tests performed with the Arkansas Nuclear One-Unit Two (ANO-2) plant provided an opportunity for studying the validity of certain integral systems codes. In particular, the turbine trip from 98.2 percent full power test was investigated with the RELAP5/MOD1 (cycle 18) ode. A detailed plant model was developed and used to understand the test reports. The early depressurization portion of the transient was reproduced; however, the resultant repressurization was not well represented due to uncertainty in the data and plant response. As a result of these computations and detailed analyses of the test data considerable insight was drawn as to the best way to perform and gather data from such integral systems tests for use in code verification studies.
Date:
January 1, 1983
Creator:
McDonald, T. A.; Tessier, J. H.; Senda, Y. & Waterman, M. D.
Object Type:
Article
System:
The UNT Digital Library
Analysis of the August 14, 1980, Rainstorm and Storm Runoff to the South Platte River in the Southern Denver Metropolitan Area, Colorado
From purpose and scope: The purpose of this report is to present an analysis of the August 14, 1980, rainstorm in Denver, Colorado, and describe its effects on the South Platte River and six of its tributaries (figure 1).
Date:
1983
Creator:
Blakely, Steven R.; Mustard, Martha H. & Doerfer, John T.
Object Type:
Report
System:
The UNT Digital Library
Analysis of the interaction between a submerged jet and a receiver-diffuser in a reverse-flow diverter. Consolidated Fuel Reprocessing Program
Two mathematical models of the interaction between a submerged jet emanating from the nozzle of a reverse flow diverter (RFD) and a receiver-diffuser of a venturi-like reverse flow diverter are presented and compared with experimental data. Both models predict the output characteristics fairly accurately, although the experimentally measured flow is observed to saturate at higher values of jet dynamic pressure and at lower values of output load impedances. An analysis based on the inviscid flow model indicates cavitation as the likely cause of the flow saturation.
Date:
January 1, 1983
Creator:
Smith, G. V. & Counce, R. M.
Object Type:
Article
System:
The UNT Digital Library
Analysis of the OPERA 15-pin experiment with SABRE-2P. [LMFBR]
The OPERA (Out-of-Pile Expulsion and Reentry Apparatus) experiment simulates the initial phase of a pump coastdown without scram of a liquid-metal fast breeder reactor, specifically the Fast Flux Test Facility. The test section is a 15-pin 60/sup 0/ triangular sector designed to simulate a full-size 61-pin hexagonal bundle. A previous study indicates this to be an adequate simulation. In this paper, experimental results from the OPERA 15-pin experiment performed at ANL in 1982 are compared to analytical calculations obtained with the SABRE-2P code at ORNL.
Date:
January 1, 1983
Creator:
Rose, S. D. & Carbajo, J. J.
Object Type:
Article
System:
The UNT Digital Library
Analysis of the output mode from 60 GHz, 200 kW pulsed and CW gyrotrons
A Varian 60 GHz, CW gyrotron has recently been operated at power levels up to 200 kW CW. The tube employs a TE/sub 011//TE/sub 021/ complex interaction cavity which inhibits mode competition by the TE/sub 221/ mode with the desired TE/sub 021/ mode. The output mode of the cavity is nominally in the TE/sub 02/ circular waveguide mode in overmoded waveguide. Since the output waveguide also serves as the gyrotron collector, mode conversion occurs in the taper sections and gaps incorporated into the collector. Measurements of the mode conversion on a 60 GHz, 200 kw, 100 ms pulse tube, have been made and compared with similar measurements on the 60 GHz. 200 kW, CW gyrotron. These measurements indicated that the CW tube had significantly more conversion of the TE/sub 02/ mode into other TE/sub on/ modes than did the pulse tube. Current design work is aimed at reducing the mode conversion of the CW design to the same levels as the pulse design (less than or equal to 10% mode converison).
Date:
January 1, 1983
Creator:
Felch, K.; Bier, R.; Fox, L.; Huey, H.; Jory, H.; Manca, J. et al.
Object Type:
Article
System:
The UNT Digital Library