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Computerized 50 liter volume calibration system

Description: A system has been designed for the Savannah River Site that will be used to calibrate product shipping containers. For accountability purposes, it is necessary that these containers be calibrated to a very high precision. The Computerized 50 Liter Volume Calibration System (CVCS), which is based on the Ideal Gas Law (IGL), will use reference volumes with precision of no less {plus minus}0.03%, and helium to calibrate the containers to have a total error of no greater than {plus minus}0.10%. A statistical interpretation of the system has given a theoretical total calculated error of {plus minus}0.08%. Tests with the system will be performed once fabrication is complete to experimentally verify the calculated error. Since the total error was calculated using the worst case scenario, the actual error should be significantly less than the calculated value. The computer controlled, totally automated system is traceable to the National Institute of Standards and Technology. The design, calibration procedure, and statistical interpretation of the system will be discussed. 1 ref.
Date: January 1, 1990
Creator: Proffitt, T.H.

TMI-2 lower head creep rupture analysis

Description: The TMI-2 accident resulted in approximately 40% of the reactor's core melting and collecting on the lower head of the reactor pressure vessel. The severity of the accident has raised questions about the margin of safety against rupture of the lower head in this accident since all evidence seems to indicate no major breach of the vessel occurred. Scoping heat transfer analyses of the relocated core debris and lower head have been made based upon assumed core melting scenarios and core material debris formations while in contact with the lower head. This report describes the structural finite element creep rupture analysis of the lower head using a temperature transient judged most likely to challenge the structural capacity of the vessel. This evaluation of vessel response to this transient has provided insight into the creep mechanisms of the vessel wall, a realistic mode of failure, and a means by which margin to failure can be evaluated once examination provides estimated maximum wall temperatures. Suggestions for more extensive research in this area are also provided. 6 refs., 15 figs.
Date: August 1, 1988
Creator: Thinnes, G.L.

(Evaluations of neutron reactions with sup 52 Cr, sup 56 Fe, sup 58 Ni)

Description: The traveler organized and chaired the meeting of the NEANDC/NEACRP Nuclear Data Evaluation Cooperation Subgroup-I: Intercomparison of USA, European, and Japanese Evaluations for {sup 52}Cr, {sup 56}Fe, and {sup 58}Ni, held on December 3, 1990, at the NEA Data Bank in Saclay, France. The traveler held discussions with Subgroup-II members to keep track of the activities of this group in which the traveler is a member. Highlights and/or recommendations of these meetings, as well as observations of the EAF, EFF, and JEF meetings, are included in this report.
Date: December 21, 1990
Creator: Fu, C.Y.

Considerations of beta and electron transport in internal dose calculations

Description: Ionizing radiation has broad uses in modern science and medicine. These uses often require the calculation of energy deposition in the irradiated media and, usually, the medium of interest is the human body. Energy deposition from radioactive sources within the human body and the effects of such deposition are considered in the field of internal dosimetry. In July of 1988, a three-year research project was initiated by the Nuclear Engineering Department at Texas A M University under the sponsorship of the US Department of Energy. The main thrust of the research was to consider, for the first time, the detailed spatial transport of electron and beta particles in the estimation of average organ doses under the Medical Internal Radiation Dose (MIRD) schema. At the present time (December of 1990), research activities are continuing within five areas. Several are new initiatives begun within the second or third year of the current contract period. They include: (1) development of small-scale dosimetry; (2) development of a differential volume phantom; (3) development of a dosimetric bone model; (4) assessment of the new ICRP lung model; and (5) studies into the mechanisms of DNA damage. A progress report is given for each of these tasks within the Comprehensive Report. In each use, preliminary results are very encouraging and plans for further research are detailed within this document. 22 refs., 13 figs., 1 tab.
Date: December 1, 1990
Creator: Bolch, W.E. & Poston, J.W. Sr. (Texas A and M Univ., College Station, TX (USA). Dept. of Nuclear Engineering)

The role of microstructural phenomena in magnetic thin films

Description: This progress report discusses two areas of research, namely the sputtering of Co-Ni-Cr films onto single crystal underlayers and the production of Co-Sm thin films with high coercivity. Included are a listing of papers submitted for publication, proposed research for year II (August 1991--July 1992), and the year II budget. (JDL)
Date: January 1, 1990
Creator: Laughlin, D.E. & Lambeth, D.N.

Simplified containment event tree analysis for the Sequoyah Ice Condenser containment

Description: An evaluation of a Pressurized Water Reactor (PWR) ice condenser containment was performed. In this evaluation, simplified containment event trees (SCETs) were developed that utilized the vast storehouse of information generated by the NRC's Draft NUREG-1150 effort. Specifically, the computer programs and data files produced by the NUREG-1150 analysis of Sequoyah were used to electronically generate SCETs, as opposed to the NUREG-1150 accident progression event trees (APETs). This simplification was performed to allow graphic depiction of the SCETs in typical event tree format, which facilitates their understanding and use. SCETs were developed for five of the seven plant damage state groups (PDSGs) identified by the NUREG-1150 analyses, which includes: both short- and long-term station blackout sequences (SBOs), transients, loss-of-coolant accidents (LOCAs), and anticipated transient without scram (ATWS). Steam generator tube rupture (SGTR) and event-V PDSGs were not analyzed because of their containment bypass nature. After being benchmarked with the APETs, in terms of containment failure mode and risk, the SCETs were used to evaluate a number of potential containment modifications. The modifications were examined for their potential to mitigate or prevent containment failure from hydrogen burns or direct impingement on the containment by the core, (both factors identified as significant contributors to risk in the NUREG-1150 Sequoyah analysis). However, because of the relatively low baseline risk postulated for Sequoyah (i.e., 12 person-rems per reactor year), none of the potential modifications appear to be cost effective. 15 refs., 10 figs. , 17 tabs.
Date: December 1, 1990
Creator: Galyean, W.J.; Schroeder, J.A. & Pafford, D.J. (EG and G Idaho, Inc., Idaho Falls, ID (USA))

Laboratory setup and results of experiments on two-dimensional multiphase flow in porous media

Description: In the event of an accidental release into earth's subsurface of an immiscible organic liquid, such as a petroleum hydrocarbon or chlorinated organic solvent, the spatial and temporal distribution of the organic liquid is of great interest when considering efforts to prevent groundwater contamination or restore contaminated groundwater. An accurate prediction of immiscible organic liquid migration requires the incorporation of relevant physical principles in models of multiphase flow in porous media; these physical principles must be determined from physical experiments. This report presents a series of such experiments performed during the 1970s at the Swiss Federal Institute of Technology (ETH) in Zurich, Switzerland. The experiments were designed to study the transient, two-dimensional displacement of three immiscible fluids in a porous medium. This experimental study appears to be the most detailed published to date. The data obtained from these experiments are suitable for the validation and test calibration of multiphase flow codes. 73 refs., 140 figs.
Date: October 1, 1990
Creator: McBride, J.F. (ed.) (Pacific Northwest Lab., Richland, WA (USA)); Graham, D.N. (ed.) & Schiegg, H.O. (SIMULTEC Ltd., Meilen/Zurich (Switzerland))

Fielding The Automated Container Offering System: An interim report

Description: The Automated Container Offering System (TACOS) is a cargo booking assistant currently being fielded in the International Traffic Directorate of the Military Traffic Management Command (MTMC). The expert system automates the selection process for type and size of SEAVAN containers, ports, carrier, and ship for containerized military cargo moving from the continental US to Europe. It is designed to perform all processing on simple cases and provide assistance to the human booker on complex cases. MTMC processes requests for {approximately}1000 containers per week on these routes. This paper is a case history which describes factors guiding development of TACOS to illustrate several themes which occur in other (military) logistics expert system projects.
Date: January 1, 1990
Creator: Dixon, B. (EG and G Idaho, Inc., Idaho Falls, ID (USA)); Rochette, D. (Army Artificial Intelligence Center, Washington, DC (USA)) & Crandell, J. (Military Traffic Management Command, Falls Church, VA (USA))

The development of an ultra-low-emission gas-fired combustor for space heaters

Description: An ultra-low-emission as-fired combustor has been developed for relatively low-temperature direct-air heating applications. High-lean premixed cyclonic combustion with a flame stabilizer is employed to achieve ultra-low emissions and high turndown operation. On the basis of analytical studies and cold modeling a 350-kW test combustor was designed and successfully tested. Experimental results obtained using natural gas and ambient air demonstrated that the test combustor can operate steadily at high excess air up to 80% to 100% over a large turndown range up to 40:1. At design operating conditions, NO{sub x} emissions as low as 0.6 vppm and CO and total hydrocarbon (THC) emissions below 3 vppm were achieved. Over the full operating range, NO{sub x} emissions from 0.3 to 1.0 vppm and CO and THC emissions below 4 vppm were demonstrated. In all tests, concentrations of NO{sub 2} were less than 40% of the total NO{sub 2} emissions from combustion processes required for good indoor air quality (0.5 vppm). This paper presents the concept of high-lean premixed ultra-low-emission cyclonic combustion, design specifications for the combustion system, and the major experimental results, including flame stability, emissions, and turndown performance. 15 refs., 10 figs., 1 tab.
Date: January 1, 1991
Creator: Xiong, Tian-yu; Khinkis, M.J. (Institute of Gas Technology, Chicago, IL (United States)) & Coppin, W.P. (Maxon Corp., Muncie, IN (United States))

Report on the IAEA coordinated research program on the measurement and evaluation of transactinium isotope nuclear decay data

Description: As one result of the First IAEA Advisory Group Meeting on Transactinium Isotope Nuclear Data, held in November 1975 at Karlsruhe, an IAEA Coordinated Research Program was set up to address certain identified actinide-isotope decay-data needs in reactor technology. At present, laboratories from five nations are involved in this effort. This paper gives an overview of this program, including its origin and the present status of the measurements being carried out. The current status of the actinide-nuclide half-life, spontaneous-fission branching ratio, {alpha}-intensity and {gamma}-intensity data of concern to the Coordinated Research Program is presented and briefly discussed. 3 figures, 9 tables.
Date: January 1, 1979
Creator: Reich, C. W.

Technical specification for the Product Evaluation Management Information System (PREMIS) Version 1. 1. 2

Description: This document contains the technical specifications and implementation details for the Product Evaluation Management Information System (PREMIS) Version 1.1.2. This document does not include the requirements analysis or design information and is not intended as a user's guide. The INGRES Applications-by-Forms (ABF) software development tool was used to specify and define the modules and screens which comprise the PREMIS application. Several external procedures are called by the ABF procedures; these have been written in VAX/VMS DCL (Digital Command Language) and SQL (Standard Query Language). These specifications together with the PREMIS information model and corresponding database definition constitute the PREMIS Version 1.1.2 technical specification and implementation description presented herein.
Date: June 1, 1990
Creator: Eaton, D.S.; Hall, R.C.; Orman, J.L. & Klamerus, J.

CHO/HGPRT mutation assay. IV. Progress with quantitative mutagenesis and mutagen screening

Description: Work is summarized on development and application of their mutation system to study mutagenicity of various physical and chemical agents which bear profound environmental concerns. Eleven alkylating chemicals, nineteen heterocyclic nitrogen mustards, nineteen metallic compounds, nineteen miscellaneous compounds were reviewed for mutagencity. Some results remain to be confirmed. Mutagencity of various classes of promutagens were also discussed; including 27 polycyclic aromatic hydrocarbons, 16 nitrosamines, 5 quinoline compounds; 5 aromatic amines and 4 miscellaneous promutagens. (PCS)
Date: January 1, 1979
Creator: Hsie, Abraham W.; O'Neill, J. Patrick; San Sebastian, Juan R. & Brimer, Patricia A.

Photochemical removal of NpF sub 6 and PuF sub 6 from UF sub 6 gas streams

Description: A novel photochemical method of removing reactive fluorides from UF{sub 6} gas has been discovered. This method reduces generated waste to little more than the volume of the removed impurities, minimizes loss of UF{sub 6}, and can produce a recyclable by-product, fluorine gas. In our new method, impure UF{sub 6}, is exposed to ultraviolet light which dissociates the UF{sub 6} to UF{sub 5} and fluorine atom. Impurities which chemically react with UF{sub 5} are reduced and form solid compounds easily removed from the gas while UF{sub 5} is converted back to UF{sub 6}. Proof-of-concept testing involved UF{sub 6} containing NpF{sub 6} and PuF{sub 6} with CO added as a fluorine atom scavenger. In a single photolysis step, greater than 5000-fold reduction of PuF{sub 6} was demonstrated while reducing NpF{sub 6} by more than 40-fold. This process is likely to remove corrosion and fission product fluorides that are more reactive than UF{sub 6} and has been demonstrated without an added fluorine atom scavenger by periodically removing photogenerated fluorine gas. 44 refs., 3 figs., 2 tabs.
Date: January 1, 1990
Creator: Beitz, J.V. & Williams, C.W.

50,000 mile methanol/gasoline blend fleet study: a progress report

Description: Seven current production automobiles are being used in a fleet study to obtain operational experience in using 10% methanol/90% gasoline blends as an automotive fuel. Data from chassis dynamometer tests (run according to the 1975--1978 Federal test procedure) have been obtained, showing fuel economy and exhaust emissions of carbon monoxide, oxides of nitrogen, unburned fuel, methanol, and aldehydes. These data are shown for each of the vehicles when operated on the 10% methanol blend, and on unleaded low octane Indolene. Chassis dynamometer tests were run at 5,000-mile intervals during the 35,000 miles accumulated on each of the four 1977 model-year vehicles and at 5,000 and 10,000 mile accumulation levels for each of the three 1978 model-year vehicles. These data show an average decrease in volumetric fuel economy (approx. = 5%) and a reduction in carbon monoxide emissions associated with the use of the 10% methanol blend. Exhaust emission deterioration factors are projected from the Federal test procedure urban cycle data. The most severe driveability problems that have been encountered thus far into the program are related to operating on a phase separated fuel and materials compatibility problems with an elastomer in the air-fuel control hardware of one vehicle.
Date: January 1, 1979
Creator: Stamper, K R

Project Management Plan

Description: The mission of the Uranium Mill Tailings Remedial Action (UMTRA) Project is explicitly stated and directed in the Uranium Mill Tailings Radiation Control Act of 1978, Public Law 95-604, 42 USC 7901 (hereinafter referred to as the Act''). Title I of the Act authorizes the Department of Energy (DOE) to undertake remedial actions at 24 designated inactive uranium processing sites and associated vicinity properties containing uranium mill tailings and other residual radioactive materials derived from the processing sites. The Act, amended in January 1983, by Public Law 97-415, also authorizes DOE to perform remedial actions at vicinity properties in Edgemont, South Dakota. Cleanup of the Edgemont processing site is the responsibility of the Tennessee Valley Authority. This document describes the plan, organization, system, and methodologies used to manage the design, construction, and other activities required to clean up the designated sites and associated vicinity properties in accordance with the Act. The plan describes the objectives of the UMTRA Project, defines participants' roles and responsibilities, outlines the technical approach for accomplishing the objectives, and describes the planning and managerial controls to be used in integrating and performing the Project mission. 21 figs., 21 tabs.
Date: January 1, 1988
Creator: Available, Not

Defect states in plasma-deposited a-Si:H. Technical progress report, May-July 1979

Description: Three preprints are presented. The first, entitled ''Glow Discharge Optical Spectroscopy Measurement of Dopant Concentrations in a-Si:H,'' reports significant differences between the ratio of boron to silicon of the films and that of their deposition plasmas. The second, entitled ''Growth Morphology and Defects in Plasma-Deposited a-Si:H Films,'' presents structural studies that show that a major class of defect is an anisotropic density fluctuation. Studies of the hydrogen environment suggest that an inhomogeneous hydrogen distribution is associated with these fluctuations. From considerations of the deposition chemistry and nucleation theory, a model is proposed to describe the film growth process and its relationship to defects. The third, entitled ''Luminescence and ESR Studies of Defects in Hydrogenated Amorphous Silicon,'' demonstrates that the two experiments involve identical recombination transitions, and identify two separate processes. One process involves defect states, and from the doping dependence of light induced ESR, it is deduced that the electronically active defects are dangling bonds with positive electronic correlation energy. (LEW)
Date: September 21, 1979
Creator: Knights, J C

Building Thermal Envelope Systems and Materials (BTESM) progress report for DOE Office of Buildings Energy Research

Description: The Monthly Report of the Building Thermal Envelope Systems and Materials (BTESM) Program is a monthly update of both in-house ORNL projects and subcontract activities in the research areas of building materials, wall systems, foundations, roofs, and building diagnostics. Presentations are not stand-alone paragraphs every month. Their principal values are the short-time lapse between accomplishment and reporting and their evolution over a period of several months.
Date: December 1, 1990
Creator: Burn, G. (comp.)

Calorimeter based detectors for high energy hadron colliders

Description: This report discusses the following topics: the central calorimeter; and installation; commissioning; and calorimeter beam tests; the central drift chamber; cosmic ray and beam tests; chamber installation and commissioning; and software development; and SSC activities: the EMPACT project.
Date: January 1, 1990
Creator: Marx, M.D. & Rijssenbeek, M. (State Univ. of New York, Stony Brook, NY (USA))

Sub-barrier fusion and near-barrier quasi-elastic scattering

Description: Elastic scattering of {sup 32}S on {sup 58,64}Ni and fusion of {sup 32}S+{sup 58,64}Ni and {sup 34}S+{sup 64}Ni have been measured at energies near the Coulomb barrier. Our results differ in several important respects from previous measurements on these systems. Coupled-channels calculations which explicitly allow for inelastic excitation and single-nucleon transfer reproduce the main features of the new data. Near-barrier elastic scattering of {sup 48}Ca on {sup 40}Ca has also been measured. These data provide evidence for the effect of strong coupling to positive Q-value channels other than single-nucleon transfer. 18 refs., 3 figs.
Date: January 1, 1990
Creator: Kolata, J.J.; Tighe, R.J. (Notre Dame Univ., IN (USA). Dept. of Physics); Fricke, S.H.; Esbensen, H. & Landowne, S. (Argonne National Lab., IL (USA))

Radioactive releases at the Savannah River Site, 1954--1988

Description: Radioactive Releases at the Savannah River Site, 1954--1988 (WSRC-RP-89-737) is the continuation of a series of reports, previously titled Releases of Radioactivity at the Savannah River Plant (DPSU-1-YR-25). The series reflects the use of air and liquid effluent sample analyses in determining the amount of radioactivity released from Savannah River Site (SRS) operations. The identification and characterization of these source terms since plant startup in 1954 have aided Site personnel in confining and limiting the amount of radioactivity released to the environment from SRS facilities. Data contained in this report are used for a variety of purposes, including the calculation of offsite dose estimates and aiding special environmental studies. This document is an effluent/source term report. The report is divided into four summary sections. Summary A details volumes of air and water released from emission sources since plant startup. Summary B lists annual radioactive release data from these emission sources, grouped by nuclide and area. Summary C provides yearly totals of radioactive releases by radionuclide, under the headings Atmospheric,'' Liquid to streams,'' or Liquid to Seepage Basins'' accordingly. Monthly radioactive releases from each emission source from 1986 to 1988 are found in Summary D. Where appropriate, headings in the summary tables have been changed to clarify and simplify emission data (see Appendix B). Additionally, any new discharge points, such as the liquid discharge from the Effluent Treatment Facility (ETF), are included in this report. A listing of 1988 source term and onsite discharge designations is provided in Appendix C. 36 refs.
Date: January 1, 1988
Creator: Hetrick, C.S. & Martin, D.K.

Structural and interfacial characteristics of thin (<10 nm) SiO sub 2 films grown by electron cyclotron resonance plasma oxidation on (100) Si substrates

Description: The feasibility of fabricating ultra-thin SiO{sub 2} films on the order of a few nanometer thickness has been demonstrated. SiO{sub 2} thin films of approximately 7 nm thickness have been produced by ion flux-controlled Electron Cyclotron Resonance plasma oxidation at low temperature on (100) Si substrates, in reproducible fashion. Electrical measurements of these films indicate that they have characteristics comparable to those of thermally grown oxides. The thickness of the films was determined by ellipsometry, and further confirmed by cross-sectional High-Resolution Transmission Electron Microscopy. Comparison between the ECR and the thermal oxide films shows that the ECR films are uniform and continuous over at least a few microns in lateral direction, similar to the thermal oxide films grown at comparable thickness. In addition, HRTEM images reveal a thin (1--1.5 nm) crystalline interfacial layer between the ECR film and the (100) substrate. Thinner oxide films of approximately 5 nm thickness have also been attempted, but so far have resulted in nonuniform coverage. Reproducibility at this thickness is difficult to achieve.
Date: April 1, 1991
Creator: Nguyen, T.D.; Carl, D.A.; Hess, D.W.; Lieberman, M.A. & Gronsky, R.

Partitioning of electrostatic and conformational contributions in the redox reactions of modified cytochromes c

Description: The reduction of acetylated, fully succinylated and dicarboxymethyl horse cytochromes c by the radicals CH/sub 3/CHOH, CO/sub 2/, O/sub 2/, and e/sup -//sub aq/, and the oxidation of the reduced cytochrome c derivatives by Fe(CN)/sub 6//sup 3 -/ were studied using the pulse radiolysis technique. Many of the reactions were also examined as a function of ionic strength. By obtaining rate constants for the reactions of differently charged small molecules redox agents with the differently charged cytochrome c derivatives at both zero ionic strength and infinite ionic strength, electrostatic and conformational contributions to the electron transfer mechanism were effectively partitioned from each other in some cases. In regard to cycochrome c electron transfer mechanism, the results, especially those for which conformational influences predominate, are supportive of the electron being transferred in the heme edge region.
Date: January 1, 1979
Creator: Ilan, Y; Shafferman, A; Feinberg, B A & Lau, Y K

Western Gas Sands Project. Status report, 1 May 1979--31 May 1979

Description: May 1979 progress of the government-sponsored projects directed toward increasing gas production from low-permeability gas sands of the western United States is summarized in this edition of the WGSP status report. The September 1977 status report, NVO/0655-100, provides background information. Work by the USGS toward resource assessment in the four primary study areas continued. Projects of the National Laboratories and Energy Technology Centers continued during May. Bartlesville Energy Technology Center continued work on fracture conductivity, rock-fluid interaction, and log evaluation and interpretation techniques. Lawrence Livermore Laboratory continued experimental and theoretical work on hydraulic fracturing mechanics and analysis of well test data. Analysis of data obtained from a test of the borehole seismic unit by Sandia Laboratories is continuing. Preliminary design work began on a DOE-financed experimental multi-well fracturing project. Cyclic gas injection operations were begun by Colorado Interstate Gas Company on the Miller No. 1 well. The Mitchell Energy Corporation Muse-Duke No. 1 well flowed 3,500 MCFD in May. Fishing operations resumed on the Mobil PCU F31-13G well.
Date: January 1, 1979
Creator: None