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[Last Christmas card]

Description: Holiday card woven by Rudi Fuchs, with a typed note about his passing on June 8, 1985 in Denton, written by his siblings. The card features the star of Bethlehem.
Date: December 1985
Creator: Fuchs, Rudolph
Partner: UNT Libraries Special Collections

White River Falls Fish Passage Project, Tygh Valley, Oregon : Final Technical Report, Volume I..

Description: Studies were conducted to describe current habitat conditions in the White River basin above White River Falls and to evaluate the potential to produce anadromous fish. An inventory of spawning and rearing habitats, irrigation diversions, and enhancement opportunities for anadromous fish in the White River drainage was conducted. Survival of juvenile fish at White River Falls was estimated by releasing juvenile chinook and steelhead above the falls during high and low flow periods and recapturing them below the falls in 1983 and 1984. Four alternatives to provide upstream passage for adult salmon and steelhead were developed to a predesign level. The cost of adult passage and the estimated run size of anadromous fish were used to determine the benefit/cost ratio of the preferred alternative. Possible effects of the introduction of anadromous fish on resident fish and on nearby Oak Springs Hatchery were evaluated. This included an inventory of resident species, a genetic study of native rainbow, and the identification of fish diseases in the basin. 28 figs., 23 tabs.
Date: June 1, 1985
Creator: Wildlife, Oregon. Dept. of Fish and & (Or.), Mount Hood National Forest
Partner: UNT Libraries Government Documents Department

Recent ORNL experience in site performance prediction: the Gas Centrifuge Enrichment Plant and the Oak Ridge Central Waste Disposal Facility

Description: The suitability of the Portsmouth Gas Centrifuge Enrichment Plant Landfill and the Oak Ridge, Tennessee, Central Waste Disposal Facility for disposal of low-level radioactive waste was evaluated using pathways analyses. For these evaluations, a conservative approach was selected; that is, conservatism was built into the analyses when assumptions concerning future events had to be made or when uncertainties concerning site or waste characteristics existed. Data from comprehensive laboratory and field investigations were used in developing the conceptual and numerical models that served as the basis for the numerical simulations of the long-term transport of contamination to man. However, the analyses relied on conservative scenarios to describe the generation and migration of contamination and the potential human exposure to the waste. Maximum potential doses to man were calculated and compared to the appropriate standards. Even under this conservative framework, the sites were found to provide adequate buffer to persons outside the DOE reservations and conclusions concerning site capacity and site acceptability were drawn. Our experience through these studies has shown that in reaching conclusions in such studies, some consideration must be given to the uncertainties and conservatisms involved in the analyses. Analytical methods to quantitatively assess the probability of future events to occur and to quantitatively determine the sensitivity of the results to data uncertainty may prove useful in relaxing some of the conservatism built into the analyses. The applicability of such methods to pathways analyses is briefly discussed.
Date: January 1, 1985
Creator: Pin, F.G.
Partner: UNT Libraries Government Documents Department

Introduction to combinatorial geometry

Description: The combinatorial geometry package as used in many three-dimensional multimedia Monte Carlo radiation transport codes, such as HETC, MORSE, and EGS, is becoming the preferred way to describe simple and complicated systems. Just about any system can be modeled using the package with relatively few input statements. This can be contrasted against the older style geometry packages in which the required input statements could be large even for relatively simple systems. However, with advancements come some difficulties. The users of combinatorial geometry must be able to visualize more, and, in some instances, all of the system at a time. Errors can be introduced into the modeling which, though slight, and at times hard to detect, can have devastating effects on the calculated results. As with all modeling packages, the best way to learn the combinatorial geometry is to use it, first on a simple system then on more complicated systems. The basic technique for the description of the geometry consists of defining the location and shape of the various zones in terms of the intersections and unions of geometric bodies. The geometric bodies which are generally included in most combinatorial geometry packages are: (1) box, (2) right parallelepiped, (3) sphere, (4) right circular cylinder, (5) right elliptic cylinder, (6) ellipsoid, (7) truncated right cone, (8) right angle wedge, and (9) arbitrary polyhedron. The data necessary to describe each of these bodies are given. As can be easily noted, there are some subsets included for simplicity.
Date: January 1, 1985
Creator: Gabriel, T.A. & Emmett, M.B.
Partner: UNT Libraries Government Documents Department

Programmatic Environmental Report for remedial actions at UMTRA (Uranium Mill Tailings Remedial Action) Project vicinity properties

Description: This Environmental Report (ER) examines the environmental consequences of implementing a remedial action that would remove radioactive uranium mill tailings and associated contaminated materials from 394 vicinity properties near 14 inactive uranium processing sites included in the Uranium Mill Tailings Remedial Action (UMTRA) Project pursuant to Public Law 95--604, the Uranium Mill Tailings Radiation Control Act (UMTRCA) of 1978. Vicinity properties are those properties in the vicinity of the UMTRA Project inactive mill sites, either public or private, that are believed to be contaminated by residual radioactive material originating from one of the 14 inactive uranium processing sites, and which have been designated under Section 102(a)(1) of UMTRCA. The principal hazard associated with the contaminated properties results from the production of radon, a radioactive decay product of the radium contained in the tailings. Radon, a radioactive gas, can diffuse through the contaminated material and be released into the atmosphere where it and its radioactive decay products may be inhaled by humans. A second radiation exposure pathway results from the emission of gamma radiation from uranium decay products contained in the tailings. Gamma radiation emitted from contaminated material delivers an external exposure to the whole body. If the concentration of radon and its decay products is high enough and the exposure time long enough, or if the exposure to direct gamma radiation is long enough, cancers (i.e., excess health effects) may develop in persons living and working at the vicinity properties. 3 refs., 7 tabs.
Date: March 1, 1985
Creator: Available, Not
Partner: UNT Libraries Government Documents Department

Helical axis stellarator equilibrium model

Description: An asymptotic model is developed to study MHD equilibria in toroidal systems with a helical magnetic axis. Using a characteristic coordinate system based on the vacuum field lines, the equilibrium problem is reduced to a two-dimensional generalized partial differential equation of the Grad-Shafranov type. A stellarator-expansion free-boundary equilibrium code is modified to solve the helical-axis equations. The expansion model is used to predict the equilibrium properties of Asperators NP-3 and NP-4. Numerically determined flux surfaces, magnetic well, transform, and shear are presented. The equilibria show a toroidal Shafranov shift.
Date: February 1, 1985
Creator: Koniges, A.E. & Johnson, J.L.
Partner: UNT Libraries Government Documents Department

High-Yield Lithium-Injection Fusion-Energy (HYLIFE) reactor

Description: The High-Yield Lithium-Injection Fusion Energy (HYLIFE) concept to convent inertial confinement fusion energy into electric power has undergone intensive research and refinement at LLNL since 1978. This paper reports on the final HYLIFE design, focusing on five major areas: the HYLIFE reaction chamber (which includes neutronics, liquid-metal jet-array hydrocynamics, and structural design), supporting systems, primary steam system and balance of plant, safety and environmental protection, and costs. An annotated bibliography of reports applicable to HYLIFE is also provided. We conclude that HYLIFE is a particularly viable concept for the safe, clean production of electrical energy. The liquid-metal jet array, HYLIFE's key design feature, protects the surrounding structural components from x-rays, fusion fuel-pellet debris, neutron damage and activation, and high temperatures and stresses, allowing the structure to last for the plant's entire 30-year lifetime without being replaced. 127 refs., 18 figs.
Date: December 23, 1985
Creator: Blink, J.A.; Hogam, W.J.; Hovingh, J.; Meier, E.R. & Pitts, J.H. (comps.)
Partner: UNT Libraries Government Documents Department

IFSMTF experiences and conclusions regarding the use of Kapton insulated, high-voltage cable in a vacuum/cryogenic environment

Description: This paper describes the experiences of the International Fusion Superconducting Magnet Test Facility (IFSMTF), formerly called the Large Coil Test Facility, with regard to the use of Kapton insulated cable for high-voltage instrumentation within the IFSMTF vacuum vessel. Initial high-potential tests performed on the General Dynamics electrical system were disappointing and led to a general review and subsequent change of the philosophy and technology associated with the use of Kapton insulated cable.
Date: January 1, 1985
Creator: Wilson, C.T. Jr.; Luton, J.N. Jr. & Shen, S.S.
Partner: UNT Libraries Government Documents Department

Key programmatic steps and activities for implementing the Uranium Mill Tailings Remedial Action Project. [UMTRA Project]

Description: The Uranium Mill Tailings Radiation Control Act of 1978 (UMTRCA) was enacted based upon findings by Congress that uranium mill tailings located at active and inactive hazard to the public, and that protection of the public health, safety and welfare, and the regulations of interstate commerce, require that every reasonable effort be made to provide for the stabilization, disposal, and control in a safe and environmentally sound manner of such tailings in order to prevent or minimize radon diffusion into the environment and to prevent or minimize other environmental hazards from such tailings.'' A general understanding of the steps leading to elimination of the hazards associated with designated uranium mill tailings sites, and the parties involved in that effort, are presented in this document. A representative schedule is also presented in this document to show both program sequence and activity interdependence. Those activities that have the most potential to influence program duration, because of the significant amount of additional time that may be required, include identification and selection of a suitable site, field data collection delays due to weather, actual acquisition of the designated or alternate disposal site, construction delays due to weather, and site licensing. This document provides an understanding of the steps, the sequence, the parties involved, and a representative duration of activities leading to remedial action and cleanup at the designated inactive uranium mill tailings sites. 10 refs., 5 figs., 1 tab.
Date: July 1, 1985
Creator: Available, Not
Partner: UNT Libraries Government Documents Department

Radiation-induced alkali formation and its effect on the corrosion of Grade-12 titanium in rock salt nuclear waste repositories

Description: Natural rock salt was gamma irradiated at a dose rate of 8 x 10/sup 6/ rad/h for times up to 1338 h. Subsequent dissolution in water produced high pH solutions. The corrosion properties of ASTM Grade-12 titanium were evaluated in simulated alkaline rock salt brines. The uniform corrosion rates were enhanced compared to those for neutral solutions, but crevice corrosion rates were retarded because of difficulties in obtaining high acidity in the crevice region. Hydrogen uptake was enhanced because of the chemical dissolution of the oxide layer. Upon hydrogenation, tensile samples showed slow-strain-rate embrittlement. Stress corrosion cracking, however, was not detected in the alkaline brines. 23 references, 8 figures, 6 tables.
Date: January 1, 1985
Creator: Ahn, T.M. & Panno, S.V.
Partner: UNT Libraries Government Documents Department

Geopressured-geothermal development and coastal subsidence in Louisiana

Description: Elevation changes at the Parcperdue geopressured-geothermal test site in southwestern Louisiana range from 0.8 to 0.16 in/y (+2 to -4 mm/y) and reflect natural base-line movements associated with salt dome growth and the compaction of thick, recent sediments. Natural variation is the primary cause of greater movement at the nearby Rockefeller Refuge geopressured-geothermal test site where base-line movement rates range from -0.43 to -0.55 in/y (-12 to -14 mm/y). Holocene sediments in the coastal marshlands at Rockefeller Refuge are more susceptible to compactional subsidence than upland Pleistocene formations at Parcperdue. Anomalous subsidence at both test sites coincided with site preparation and well drilling and may have been related to loading of surficial soils by the weight of drilling equipment. Elevation changes monitored after drilling and during formation testing were consistent with base-line subsidence rates, indicating that loading was temporary. Anomalous base-line subsidence rates coinciding with areas of historical fluid withdrawal indicate that these effects may outweigh the effects of present geopressured-geothermal development.
Date: January 1, 1985
Creator: Trahan, D.B.
Partner: UNT Libraries Government Documents Department

Methods and findings of a systems interaction study of a Westinghouse PWR

Description: This paper describes the methods and findings of a systems interaction study of a Westinghouse PWR. BNL conducted the study as a methods application that was performed to support the resolution of Unresolved Safety Issue A-17 on Systems Interactions. The method calls for a fault tree model of the plant to be developed in stages, corresponding to successively increasing levels of scope and detail. A functional model is developed first, resolved only to sufficient detail to reflect support system dependences; this guides the subsequent searches for spatial and induced-human interactions. This process has led to the identification of an active single failure causing loss of low pressure injection following a large or medium LOCA.
Date: January 1, 1985
Creator: Youngblood, R.; Hanan, N.; Fitzpatrick, R.; Xue, D.; Bozoki, G.; Fresco, A. et al.
Partner: UNT Libraries Government Documents Department

Improved control of the finish grinding process in cement manufacture

Description: Activities developed on Task 6 of the Cement Clinker Project from July 1, 1985 to September 30, 1985 are described in this progress report. Results on eight continuous ball mill tests are included. Experimentation was performed in a 0.99 m diameter air-swept mill at the Kennedy Van Saun facilities in Danville. In the first four runs, the effect of production rate on size distribution of product was tested for the powder filling level around 0.83. In the other tests, the powder filling was changed between 0.7 and 1.25. A preliminary analysis of the results indicates that the internal classification curve is moving in a narrow band even when the product size distribution is strongly affected by the different experimented condition. Also the direct scale-up results from the 8 inch diameter batch mill to the 0.99 mill diameter in batch mode is reported. Predictions overestimate capacity for short times of grinding but they are in good agreement for long times. The presence of components having large and small rate of breakage and occurrence of abnormal breakage are discussed. Future work includes detailed analysis of the data and simulation of continuous test results.
Date: January 1, 1985
Creator: Menacho, J.M.; Austin, L.G. & Cuhadaroglu, M.S. (Pennsylvania State Univ., University Park, PA (USA). Dept. of Mineral Processing)
Partner: UNT Libraries Government Documents Department

Energy conservation potential of Portland Cement particle size distribution control

Description: The main objective of Phase 3 is to develop practical economic methods of controlling the particle size distribution of portland cements using existing or modified mill circuits with the principal aim of reducing electrical energy requirements for cement manufacturing. The work of Phase 3, because of its scope, will be carried out in 10 main tasks, some of which will be handled simultaneously. Progress on each of these tasks is discussed in this paper.
Date: January 1, 1985
Creator: Tresouthick, S.W.
Partner: UNT Libraries Government Documents Department

Notes on the IMACON 500 streak camera system

Description: The notes provided are intended to supplement the instruction manual for the IMACON 500 streak camera system. The notes cover the streak analyzer, instructions for timing the streak camera, and calibration. (LEW)
Date: January 31, 1985
Creator: Clendenin, J.E.
Partner: UNT Libraries Government Documents Department

Possibilities for achieving x-ray lasing action by use of high-order multiphoton processes. [lambda = 10 nm]

Description: We consider some possible mechanisms for producing gain in the 10 nm spectral region. They involve the creation of a population inversion in a confined plasma column by selective excitation of multicharged ions via absorption of many (>10) ultraviolet photons. Specific treatment is made of Kr-like ions pumped by a KrF excimer laser. 27 refs., 5 figs.
Date: December 1, 1985
Creator: Clark, C.W.; Littman, M.G.; McIlrath, T.J.; Miles, R.; Skinner, C.H.; Suckewer, S. et al.
Partner: UNT Libraries Government Documents Department

Tritium gettering from air with hydrogen uranyl phosphate. Revision 1

Description: Hydrogen uranyl phosphate (HUP), a solid proton electrolyte, getters tritium gas and water vapor from air by DC electrical action. We have reduced the formation of residual tritiated water to less than 2%, and demonstrated that HUP can clean a 5.5 m/sup 3/ working glove box. Data are presented to illustrate the parameters of the gettering and a model is derived. Two other tritium gettering electrolytes have been discovered. 9 refs., 5 figs., 3 tabs.
Date: January 1, 1985
Creator: Souers, P.C.; Uribe, F.S.; Stevens, C.G. & Tsugawa, R.T.
Partner: UNT Libraries Government Documents Department

Pseudopotential calculations and photothermal lensing measurements of two-photon absorption in solids

Description: We have studied two-photon absorption in solids theoretically and experimentally. We have shown that it is possible to use accurate band structure techniques to compute two-photon absorption spectra within 15% of measured values in a wide band-gap material, ZnS. The empirical pseudopotential technique that we used is significantly more accurate than previous models of two-photon absorption in zinc blende materials, including present tunneling theories (which are essentially parabolic-band results in disguise) and the nonparabolic-band formalism of Pidgeon et al. and Weiler. The agreement between our predictions and previous measurements allowed us to use ZnS as a reference material in order to validate a technique for measuring two-photon absorption that was previously untried in solids, pulsed dual-beam thermal lensing. With the validated technique, we examined nonlinear absorption in one other crystal (rutile) and in several glasses, including silicates, borosilicates, and one phosphate glass. Initially, we believed that the absorption edges of all the materials were comparable; however, subsequent evidence suggested that the effective band-gap energies of the glasses were above the energy of two photons in our measurement. Therefore, we attribute the nonlinear absorption that we observed in glasses to impurities or defects. The measured nonlinear absorption coefficients were of the order of a few cm/TW in the glasses and of the order of 10 cm/GW in the crystals, four orders of magnitude higher than in glasses. 292 refs.
Date: November 4, 1985
Creator: White, W.T. III
Partner: UNT Libraries Government Documents Department

Tritium gas transfer pump development

Description: Non-lubricated, hermetically sealed pumps for tritium service have been selected to replace Sprengel pumps in the existing Tritium Facility. These pumps will be the primary gas-transfer pumps in the planned Replacement Tritium Facility. The selected pumps are Metal Bellows Corporation's bellows pumps and Normetex scroll pumps. Pumping range for a Normetex/Metal Bellows system is from 0.01 torr suction to 2300 torr discharge. Performance characteristics of both pumps are presented. 10 figs.
Date: January 1, 1985
Creator: Sharpe, C.L.
Partner: UNT Libraries Government Documents Department

Helical coil alignment in the advanced toroidal facility

Description: This paper presents a brief overview of the helical coil design concept, detailed descriptions of the method for installation and alignment, and discussions of segment installation and alignment equipment. Alignment is accomplished by optical methods using electronic theodolites connected to a microcomputer to form a coordinate measurement system. The coordinate measurement system is described in detail, along with target selection and fixturing for manipulation of the helical coil segments during installation. In addition, software is described including vendor-supplied software used in the coordinate measurement system and in-house-developed software used to calibrate segment and positioning fixture motion. 2 refs., 8 figs.
Date: January 1, 1985
Creator: Taylor, D.J.; Cole, M.J.; Johnson, R.L.; Nelson, B.E.; Warwick, J.E. & Whitson, J.C.
Partner: UNT Libraries Government Documents Department

IFSMTF power supply regulator

Description: The high-current, low voltage power supplies for the International Fusion Superconducting Magnet Test Facility at Oak Ridge National Laboratory has been redesigned to eliminate stability problems caused by limiting action and related system dynamics. This paper describes the redesign, simulation, and testing of the power supply regulator for a 2-H, 15,000-A superconducting coil. Included in the paper are circuit models, frequency domain block diagrams, and CSMP simulations of the regulator. The regulator consists of an inner voltage loop and an outer current loop and is provided with adjustable voltage and current limits. The simulation includes a nonlinear function to characterize the gate drive and rectifier units of the power supply. Experimental data demonstrating the performance of the regulator are included for comparisons with the simulation.
Date: January 1, 1985
Creator: Googe, J.M.; Nickels, L.E.; Wintenberg, R.E. & Wood, R.J.
Partner: UNT Libraries Government Documents Department

Wetlands proximity mapping of 86 waste sites on the Savannah River Plant

Description: This project developed wetlands proximity maps and provided wetlands information by means of a Geographic Environmental Data Base (GEDB) for each of 11 interaction zones identified in DPST-84-684. It includes an analysis of 86 hazardous waste sites at the Savannah River Plant (SRP). The map of each interaction zone is intended to indicate major wetland and land cover types, with emphasis on locations of hazardous waste sites with wetland areas identified within a 1000 meter radius. Statistics of aerial extent for wetland and land cover for each interaction zone are provided. 80 figs., 93 tabs.
Date: September 16, 1985
Creator: Jensen, J.R. (South Carolina Univ., Columbia, SC (USA). Dept. of Geography)
Partner: UNT Libraries Government Documents Department