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Calorimetric assay of reactor grade PuO{sub 2}

Description: This paper describes an experiment to estimate random and systematic errors in determining the effective specific power of plutonium. Precisons and accuracies comparable to coulometric assay were demonstrated for a wide range of plutonium isotopic compositions. Thus, calorimetric assay can provide an effective method for plutonium assay of materials in the nuclear fuel cycle.
Date: December 31, 1977
Creator: Rodenburg, W. W. & Rogers, D. R.
Partner: UNT Libraries Government Documents Department

REPASSIVATION STUDIES OF ALUMINUM USING A ROTATING STRIP ELECTRODE

Description: In this work a technique was described to study the repassivation of bare metal surfaces. The advantage of this approach over other techniques is the ease with which multiple repassivation events can be studied. The repassivation rate of aluminum was found to depend on the anion in solution. Repassivation rates are higher for aluminum in phosphate and sulfate solutions compared to borate. It is possible that borate may interact more strongly than sulfate or phosphate on the bare aluminum surface blocking the diffusion of oxygen or changing the rate of repassivation.
Date: September 1, 1977
Creator: ALDYKIEWICZ,A.J.,JR. & ISAACS,H.S.
Partner: UNT Libraries Government Documents Department

Projectile charge-state dependence of K-shell ionization by silicon ions: A comparison of Coulomb ionization theories for direct ionization and electron capture with x-ray production data

Description: Article discussing projectile charge-state dependence of K-shell ionization by silicon ions and a comparison of Coulomb ionization theories for direct ionization and electron capture with x-ray production data.
Date: October 1977
Creator: McDaniel, Floyd Del. (Floyd Delbert), 1942-; Duggan, Jerome L.; Basbas, George; Miller, P. D. & Lapicki, Gregory
Partner: UNT College of Arts and Sciences

Evaluation of computational techniques for LMFBR safety analysis

Description: Analysis of Primary Containment Transients (APRICOT) is an ERDA sponsored project in which a variety of reactor safety analysis groups around the world have been invited to participate by performing calculations to verify capabilities of large computer codes used to analyze postulated core disputive accidents of liquid metal fast breeder reactors. Nine groups have performed calculations of the first three problems which were set, using ten computer codes. Two problems were simple test problems for which analytical solutions exist, namely an ideal gas shock tube, and a suddenly pressurized spherical cavity in an infinite elastic medium. The third problem concerns an explosion in a partially water-filled overstrong cylindrical containment vessel for which experimental data exist. A critique of the results of these calculations is given in the paper.
Date: January 1, 1977
Creator: Herrmann, W. & Gross, M.
Partner: UNT Libraries Government Documents Department

Improved conversion efficiency workshop. Volume 2. Summary

Description: The Divisions of Power Systems of the US DOE held a series of interactive workshops designed to involve citizens, representatives of industry, the academic community, public interest groups, and local and state government personnel in the planning of energy research and development programs. The second workshop held in Pipestem, W. Va. concentrated on improving energy conversion efficiency and switching to alternative fuels. Panel discussions were held to evaluate R and D proposals related to power generation, heating systems, and waste heat recovery. The conclusions and recommendations of each of these three panels are presented. (LCL)
Date: January 1, 1977
Creator: Monetta, D J
Partner: UNT Libraries Government Documents Department

Engineering Parameters for Four Ignition TNS Tokamak Reactor Systems

Description: The ORNL/Westinghouse program for The Next Step (TNS) tokamak beyond TFTR has examined a large number of potential configurations for D-T burning ignition tokamak systems. An objective of this work has been to quantify the trade-offs associated with the assumption of certain plasma physics criteria and toroidal field coil technologies. Four tokamak system point designs are described, each representative of the TF coil technologies considered, to illustrate the engineering features associated with each concept. Point designs, such as the ones discussed herein, have been used to develop component size, performance and cost scaling relationships which have been incorporated in a digital computer code to facilitate an examination of the total design and cost impact of candidate design approaches. The point designs which are described are typical, however, they have not been individually optimized. The options are distinguished by the TF coil technology chosen and include: (1) a high field water-cooled copper TF system, (2) a moderate field NbTi superconducting TF system, (3) a high field Nb/sub 3/Sn superconducting TF system, and (4) a high field hybrid TF system with outer NbTi superconducting windings and inner water-cooled copper windings. Descriptions are provided for the major device components and all major support systems including power supplies, vacuum systems, fuel systems, heat transport and facility systems.
Date: September 30, 1977
Creator: Varljen, T. C.; Gibson, G.; French, J. W. & Heck, F. M.
Partner: UNT Libraries Government Documents Department

Evaluation of denatured thorium fuel cycles in pressurized water reactors

Description: A developing national energy policy that is based in part on a substantial expansion of the LWR-based electrical generating capacity with deferment of the LMFBR has prompted a re-evaluation of our nuclear fuel resources and their utilization. The ancillary policy of minimizing nuclear weapons proliferation through diversion of bred fissile material has left in doubt the viability of fuel recycling as a means of extending these fuel resources. A substantial, government-sponsored effort is in progress to examine alternate fuel cycles and advanced reactor concepts which can lead to improved resource utilization while minimizing proliferation potential. This paper evaluates several improved fuel cycles for use in current design PWRs and develops selected scenarios for their use within the framework of the safeguarded Nuclear Energy Center (NEC) concept.
Date: January 1, 1977
Creator: Matzie, R.A.; Rec, J.R. & Terney, A.N.
Partner: UNT Libraries Government Documents Department

Energy policy options for Illinois. Proceedings. [26 papers]

Description: Twenty-six papers presented at the Fifth Annual Oil Illinois Energy Conference are categorized into five sections, namely: An overview of U.S. and Illinois Energy Policy; Energy Policy; Conservation--Solar--Biomass and Solid Wastes; Energy Policy; Petroleum and Natural Gas; Energy Policy; Coal and Electric Utilities; and Economic and Consumer Concerns. One paper, A Perspective on Long-Range Nuclear Energy Options, by William O. Harms has previously appeared in EAPA 4: 1364. (MCW)
Date: January 1, 1977
Partner: UNT Libraries Government Documents Department

Oceanic distributions of radionuclides from nuclear weapons testing. [Relevance to decision as to marine disposal of radioactive wastes]

Description: Data on the transport of fallout radionuclides in the Atlantic and Pacific Oceans are reviewed. Relevance of water column fallout data to the disposal of radioactive waste in marine locations is discussed. It is pointed out that regional patterns of delivery of soluble radionuclides must be assumed to persist at least for decades, in spite of the homogenizing action of ocean current systems and that, although there are delays in relation to density discontinuities in the water column, particle-associated radionuclides are generally delivered directly to the sediment surface. The chemistry of particle association appears increasingly complex, in relation both to the element selectivity among kinds of particles, and the stability of the associations once formed, and regional conditions may lead to retention of Pu (and possibly other nuclides) in discrete layers or throughout the water column, in opposition to its general tendency to associate with particles.
Date: January 1, 1977
Creator: Bowen, V.T.
Partner: UNT Libraries Government Documents Department

System design for retrieval of solidified high-level wastes at Hanford

Description: A Waste Retrieval System has been conceptually designed as a step in the process toward the demonstration of the capability to retrieve the projected 36,000,000 gallons of radioactive salt cake and sludge wastes from underground storage tanks at Hanford. This functionally complete, totally remotely operable system consists of a large mobile platform containing all of the tools and equipment necessary to recover, remove and package the wastes for transfer to an onsite processing facility.
Date: January 1, 1977
Creator: Wallskog, H.A.
Partner: UNT Libraries Government Documents Department

Locating a buried magnetic dipole

Description: The theoretical basis and required computations for locating a buried magnetic dipole are outlined. The results are compared with measurements made with a tiltable coil lowered to a depth of 20 m in a vertical borehole within a three-layered earth. this work has application to the rescue of trapped miners. 3 figures, 1 table. (RWR)
Date: January 1, 1977
Creator: Caffey, T.W.H.
Partner: UNT Libraries Government Documents Department

Statistical activities during 1976 and the design and initial analysis of nuclear site studies. [/sup 241/Am, /sup 137/Cs, /sup 239/Pu, /sup 240/Pu]

Description: Statistical design and analysis activities for the Nevada Applied Ecology Group (NAEG) during 1976 are briefly outlined. This is followed by a description of soil data collected thus far at nuclear study sites. Radionuclide concentrations in surface soil collected along a transect from ground zero (GZ) along the main fallout pattern are given for Nuclear Site (NS) 201. Concentrations in soil collected at 315 locations on a grid system at 200 foot spacings are also given for this site. The /sup 241/Am to /sup 137/Cs ratios change over NS 201 depending on location relative to GZ. They range from less than one where /sup 241/Am is at low levels, to more than fifty where /sup 241/Am levels are high (near GZ). The estimated median /sup 239/ /sup 240/Pu to /sup 241/Am ratio is 11 and appears to be relatively constant over the area (the 95 percent lower and upper limits on the true median ratio are about 8 and 14).
Date: May 1, 1977
Creator: Gilbert, R O; Essington, E H; Brady, D N; Doctor, P G & Eberhardt, L L
Partner: UNT Libraries Government Documents Department

Digital signal processing at GEND's data center

Description: The conversion and recording of analog signals in digital form has been an active element in the manufacturing operations of the General Electric Neutron Devices Department (GEND) since 1966. The first computerized data system for these digitized waveforms was implemented at GEND's data center approximately two years later during 1968. The evolution and integration of these two activities at GEND are addressed in this paper. Beginning with the tester--data center interface, emphasis is placed on previous approaches, current capabilities, near-term trends, and future requirements. The digitizing process has developed into a firmly established set of hardware and associated software techniques which has proven itself as an accurate, reliable procedure for capturing waveform characteristics. The most important aspect of this process is the recent trend toward increased sampling rates and a greater number of digitized parameters per operation. The combined effect is a tremendous increase in output data volumes. Since digital signal processing carries the potential for significant contributions to manufacturing quality and reliability, as well as engineering design and development, increased activity in this area appears extremely desirable. 11 figures. (RWR)
Date: January 1, 1977
Creator: Jackson, J.E.
Partner: UNT Libraries Government Documents Department

Education confronts the energy dilemma

Description: The conference was convened to present a role that America's schools could play in solving or coping with the energy crisis. Eleven sessions were conducted to fulfill this concern: Our Energy Crisis and Education: A Critical Assessment; The Energy Agenda at the Office of Education; Energy Resources: Scenarios for the Future; The Moral Dilemma of Energy Education; Constraints Influencing Education's Role; Energy Education: What's Been Done to Date; Practitioners Discuss Their Future Roles, Responsibilities; Politics of Energy Education; Confronting the Energy Dilemma; The Meaning of Scarcity; and The Impact of the Carter Energy Program on American Schools. Summary reports and reactions to the conference conclude the proceedings. (MCW)
Date: January 1, 1977
Partner: UNT Libraries Government Documents Department

Investigations into the sodium-steam surface interaction on a stagnant pool

Description: Experimental investigations into the interface reaction between a steam atmosphere and a stagnant sodium pool have been conducted at the General Electric San Jose Test Facility. The objectives of the tests were to create worst case accident situations and evaluate the consequences with respect to the design of LMFBR Steam Generators. The most important results of these investigations were the creation and actual photographing of a pool fire and the determination that the damage mechanism associated with it is of a corrosive nature rather than thermal weakening as previously suspected.
Date: January 1, 1977
Creator: Stehling, S.G. & Hunsicker, J.C.
Partner: UNT Libraries Government Documents Department

Adsorption induced losses in interfacial cohesion

Description: A model for interfacial cohesion is developed which describes the loss in the strength of an interface due to the segregation and adsorption of impurities on it. Distinctions are made between interface separations that occur too rapidly for any significant redistribution of adsorbing matter to take place and separations that are slow enough to allow full adsorption equilibrium. Expressions for the total work of complete decohesion are presented for both cases. The results are applied to well-known model adsorption isotherms and some experimental data for grain boundary adsorption of phosphorus in iron is analyzed with respect to the losses in intergranular cohesion.
Date: July 1, 1977
Creator: Asaro, R J
Partner: UNT Libraries Government Documents Department

TRU waste form and package criteria meeting

Description: The broad subject of the meeting is the overall ERDA TRU waste management program, although the discussions also cover performance criteria for the Waste Isolation Pilot Plant and their implications for the overall TRU program. Separate abstracts were prepared for all ten presentations. (DLC)
Date: August 1, 1977
Partner: UNT Libraries Government Documents Department

Invitational well-testing symposium proceedings

Description: Papers presented at the conference can be broadly classified into five categories: reviews, instrumentation, field applications, theory and techniques, and drilling and related activities. A separate abstract was prepared for each of the fourteen papers compiled. (JSR)
Date: March 1, 1977
Partner: UNT Libraries Government Documents Department

High energy collisions of nuclei: experiments

Description: Heavy-ion nuclear reactions with projectile energies up to 2.1 GeV/A are reviewed. The concept of ''rapidity'' is elucidated, and the reactions discussed are divided into sections dealing with target fragmentation, projectile fragmentation, and the intermediate region, with emphasis on the production of light nuclei in high-energy heavy-ion collisions. Target fragmentation experiments using nuclear emulsion and AgCl visual track detectors are also summarized. 18 figures. (RWR)
Date: September 1, 1977
Creator: Heckman, H.H.
Partner: UNT Libraries Government Documents Department

Effect of transport in distribution of radioions and radiolabeled metabolites

Description: The following topics are discussed: route of administration; carrier effects and complexed or ionic tracers; membrane permeability, extracellular and intracellular concentrations; enzyme and hormonal stimulation or depression and the metabolic state; neoplasia and transport; and carrier for radiopharmaceutical binding to membrane or protein sites. Some radioisotopes considered are /sup 99m/Tc, /sup 65/Zn, /sup 62/Zn, /sup 14/C and /sup 111/In. (HLW)
Date: December 22, 1977
Creator: Yano, Y.
Partner: UNT Libraries Government Documents Department