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Certification plan for safety and PRA codes
A certification plan for computer codes used in Safety Analyses and Probabilistic Risk Assessment (PRA) for the operation of the Savannah River Site (SRS) reactors has been prepared. An action matrix, checklists, and a time schedule have been included in the plan. These items identify what is required to achieve certification of the codes. A list of Safety Analysis and Probabilistic Risk Assessment (SA PRA) computer codes covered by the certification plan has been assembled. A description of each of the codes was provided in Reference 4. The action matrix for the configuration control plan identifies code specific requirements that need to be met to achieve the certification plan's objectives. The checklist covers the specific procedures that are required to support the configuration control effort and supplement the software life cycle procedures based on QAP 20-1 (Reference 7). A qualification checklist for users establishes the minimum prerequisites and training for achieving levels of proficiency in using configuration controlled codes for critical parameter calculations.
Date:
May 1, 1990
Creator:
Toffer, H.; Crowe, R.D. (Westinghouse Hanford Co., Richland, WA (United States)) & Ades, M.J. (Westinghouse Savannah River Co., Aiken, SC (United States))
Object Type:
Report
System:
The UNT Digital Library
Certification plan for safety and PRA codes
A certification plan for computer codes used in Safety Analyses and Probabilistic Risk Assessment (PRA) for the operation of the Savannah River Site (SRS) reactors has been prepared. An action matrix, checklists, and a time schedule have been included in the plan. These items identify what is required to achieve certification of the codes. A list of Safety Analysis and Probabilistic Risk Assessment (SA&PRA) computer codes covered by the certification plan has been assembled. A description of each of the codes was provided in Reference 4. The action matrix for the configuration control plan identifies code specific requirements that need to be met to achieve the certification plan`s objectives. The checklist covers the specific procedures that are required to support the configuration control effort and supplement the software life cycle procedures based on QAP 20-1 (Reference 7). A qualification checklist for users establishes the minimum prerequisites and training for achieving levels of proficiency in using configuration controlled codes for critical parameter calculations.
Date:
May 1, 1990
Creator:
Toffer, H.; Crowe, R. D. & Ades, M. J.
Object Type:
Report
System:
The UNT Digital Library
Changes in the Structure of the Texas Economy, 1980-88
"This report examines changes in the structure of the Texas economy since 1980 to substantiate how much diversification actually has taken place."
Date:
May 1990
Creator:
Harris, Jack C.
Object Type:
Report
System:
The Portal to Texas History
Characterization of leaky faults
Leaky faults provide a flow path for fluids to move underground. It is very important to characterize such faults in various engineering projects. The purpose of this work is to develop mathematical solutions for this characterization. The flow of water in an aquifer system and the flow of air in the unsaturated fault-rock system were studied. If the leaky fault cuts through two aquifers, characterization of the fault can be achieved by pumping water from one of the aquifers, which are assumed to be horizontal and of uniform thickness. Analytical solutions have been developed for two cases of either a negligibly small or a significantly large drawdown in the unpumped aquifer. Some practical methods for using these solutions are presented. 45 refs., 72 figs., 11 tabs.
Date:
May 1, 1990
Creator:
Shan, Chao
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Charged-particle inclusive distributions from hadronic Z sup 0 decays
We have measured inclusive distributions for charged particles in hadronic decays of the Z boson. The variables chosen for study were the mean charged-particle multiplicity ({l angle} n{sub ch} {r angle}), scaled momentum (x), and momenta transverse to the sphericity axes (p{perpendicular}{sub in} and p{perpendicular}{sub out}). The distributions have been corrected for detector effects and are compared with data from e{sup +}e{sup {minus}} annihilation at lower energies and with the predictions of several QCD-based models. The data are in reasonable agreement with expectations. 12 refs., 2 figs.
Date:
May 1, 1990
Creator:
O'Shaughnessy, K.
Object Type:
Article
System:
The UNT Digital Library
CIDC Provider Bulletin, Number 12, May 1990
Quarterly newsletter from the Texas Department of Health providing information for health care providers offering services to children with special needs and chronic illness, including resources related medical administration and insurance claims as well as other relevant topics for working with the special health care needs population.
Date:
May 1990
Creator:
Texas. Bureau of Chronically Ill and Disabled Children's Services.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Closed orbit errors and correction in the SXLS ring
SXLS is an electron synchrotron/storage ring, used as an X-ray lithography source, with a critical wavelength of {lambda}=10 A. It has a circumference of 8.5 m and its main elements are two 180{degree} combined function dipole, four quadrupoles and two sextupoles. The horizontal and vertical tunes are 1.415 and 0.415, respectively. The machine is being constructed in two phases. In Phase 1 and 2 it will run at 200 and 696 Mev using conventional (warm) and superconducting bending magnets, respectively. All other elements, as well as the lattice functions will be the same in the two phases. The constraint that the exit slits impose on the photon beamlines, requires that the source point, that is the closed orbit be controlled to better then {plus minus}3 mm horizontally, {plus minus}2 mm and {plus minus}1 mrad vertically. The following is a study of the expected closed orbit distortion in the ring as well as of the orbit monitor/corrector schemes necessary to correct the orbit. 10 figs.
Date:
May 1, 1990
Creator:
Bozoki, E. S.
Object Type:
Report
System:
The UNT Digital Library
CO sub 2 emissions from coal-fired and solar electric power plants
This report presents estimates of the lifetime carbon dioxide emissions from coal-fired, photovoltaic, and solar thermal electric power plants in the United States. These CO{sub 2} estimates are based on a net energy analysis derived from both operational systems and detailed design studies. It appears that energy conservation measures and shifting from fossil to renewable energy sources have significant long-term potential to reduce carbon dioxide production caused by energy generation and thus mitigate global warming. The implications of these results for a national energy policy are discussed. 40 refs., 8 figs., 23 tabs.
Date:
May 1, 1990
Creator:
Keith, F.; Norton, P. & Brown, D.
Object Type:
Report
System:
The UNT Digital Library
Coherent Instability Limitations of Fermilab's Upgrades
This study is motivated by the proposed upgrades of a whole sequence of Fermilab's accelerators; Linac, Booster, Main Ring or Main Injector and the Tevatron. Two leading high-luminosity collider upgrade scenarios involve larger numbers of colliding bunches of higher intensity. This obviously raises a question of coherent instabilities, which was already quite vital in the present fixed target and collider scenarios. Furthermore, multi-bunch instability limitations due to the resistive wall impedance are studied for the fixed target mode. The same question of coupled bunch instabilities is also addressed for new collider schemes involving large number of colliding bunches (up to 100 on 100 bunches), where the inter-bunch communication may become important. 4 refs.
Date:
May 1, 1990
Creator:
Bogacz, S. A.
Object Type:
Article
System:
The UNT Digital Library
Collected radiochemical and geochemical procedures
This revision of LA-1721, 4th Ed., Collected Radiochemical Procedures, reflects the activities of two groups in the Isotope and Nuclear Chemistry Division of the Los Alamos National Laboratory: INC-11, Nuclear and radiochemistry; and INC-7, Isotope Geochemistry. The procedures fall into five categories: I. Separation of Radionuclides from Uranium, Fission-Product Solutions, and Nuclear Debris; II. Separation of Products from Irradiated Targets; III. Preparation of Samples for Mass Spectrometric Analysis; IV. Dissolution Procedures; and V. Geochemical Procedures. With one exception, the first category of procedures is ordered by the positions of the elements in the Periodic Table, with separate parts on the Representative Elements (the A groups); the d-Transition Elements (the B groups and the Transition Triads); and the Lanthanides (Rare Earths) and Actinides (the 4f- and 5f-Transition Elements). The members of Group IIIB-- scandium, yttrium, and lanthanum--are included with the lanthanides, elements they resemble closely in chemistry and with which they occur in nature. The procedures dealing with the isolation of products from irradiated targets are arranged by target element.
Date:
May 1, 1990
Creator:
Kleinberg, J
Object Type:
Report
System:
The UNT Digital Library
Colonie Interim Storage Site annual site environmental report for calendar year 1989, Colonie, New York
IN 1984, Congress assigned the cleanup of the National Lead (NL) Industries site in Colonie, New York, to the Department of Energy (DOE) as part of a decontamination research and development project under the 1984 Energy and Water Appropriations Act. DOE then included the site in the Formerly Utilized Sites Remedial Action Program (FUSRAP), an existing DOE program to decontaminate or otherwise control sites where residual radioactive materials remain for the early years of the nation's atomic energy program. DOE instituted an environmental monitoring program at the site in 1984. Results are presented annually in reports such as this. Under FUSRAP, the first environmental monitoring report for this site presented data for calendar year 1984. This report presents the findings of the environmental monitoring program conducted during calendar year 1989. 16 refs., 17 figs., 14 tabs.
Date:
May 1, 1990
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Columbia University flow instability experimental program: Volume 2. Single tube uniformly heated tests -- Part 2: Uncertainty analysis and data
In June 1988, Savannah River Laboratory requested that the Heat Transfer Research Facility modify the flow excursion program, which had been in progress since November 1987, to include testing of single tubes in vertical down-flow over a range of length to diameter (L/D) ratios of 100 to 500. The impetus for the request was the desire to obtain experimental data as quickly as possible for code development work. In July 1988, HTRF submitted a proposal to SRL indicating that by modifying a facility already under construction the data could be obtained within three to four months. In January 1990, HTFR issued report CU-HTRF-T4, part 1. This report contained the technical discussion of the results from the single tube uniformly heated tests. The present report is part 2 of CU-HTRF-T4 which contains further discussion of the uncertainty analysis and the complete set of data.
Date:
May 1, 1990
Creator:
Dougherty, T.; Maciuca, C.; McAssey, E. V. Jr.; Reddy, D. G. & Yang, B. W.
Object Type:
Report
System:
The UNT Digital Library
A comparison of the Monte Carlo and the flux gradient method for atmospheric diffusion
In order to model the dispersal of atmospheric pollutants in the planetary boundary layer, various methods of parameterizing turbulent diffusion have been employed. The purpose of this paper is to use a three-dimensional particle-in-cell transport and diffusion model to compare the Markov chain (Monte Carlo) method of statistical particle diffusion with the deterministic flux gradient (K-theory) method. The two methods are heavily used in the study of atmospheric diffusion under complex conditions, with the Monte Carlo method gaining in popularity partly because of its more direct application of turbulence parameters. The basis of comparison is a data set from night-time drainage flow tracer experiments performed by the US Department of Energy Atmospheric Studies in Complex Terrain (ASCOT) program at the Geysers geothermal region in northern California. The Atmospheric Diffusion Particle-In-Cell (ADPIC) model used is the main model in the Lawrence Livermore National Laboratory emergency response program: Atmospheric Release Advisory Capability (ARAC). As a particle model, it can simulate diffusion in both the flux gradient and Monte Carlo modes. 9 refs., 6 figs.
Date:
May 1, 1990
Creator:
Lange, R.
Object Type:
Article
System:
The UNT Digital Library
Comprehensive Self-Assessment and Upgrade Program (CSAUP) performance objectives and criteria
The US Department of Energy (DOE) has placed strong emphasis on a new way of doing business patterned on the lessons learned in the nuclear power industry after the accident at Three Mile Island Unit 2. The new way relies on strict adherence to policies and procedures, a greatly expanded training program, and much more rigor and formality in operations. Another key element is more visible oversight by upper management and auditability by DOE. Although the Chemical Technology Division (Chem Tech) has functioned in a safe manner since its beginning, the policies and methods of the past are no longer appropriate. Therefore, in accordance with these directives, Chem Tech is improving its operational performance by making a transition to greater formality in the observance of policies and procedures and a more deliberate consideration of the interrelationships between organizations at ORNL. This transition to formality is vitally important because both our staff and our facilities are changing with time. For example, some of the inventors and developers of the processes and facilities in use are now passing the torch'' to the next generation of Chem Tech staff. Our facilities have also served us well for many years, but the newest of …
Date:
May 1, 1990
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Computing and data handling requirements for SSC (Superconducting Super Collider) and LHC (Large Hadron Collider) experiments
A number of issues for computing and data handling in the online in environment at future high-luminosity, high-energy colliders, such as the Superconducting Super Collider (SSC) and Large Hadron Collider (LHC), are outlined. Requirements for trigger processing, data acquisition, and online processing are discussed. Some aspects of possible solutions are sketched. 6 refs., 3 figs.
Date:
May 1, 1990
Creator:
Lankford, A.J.
Object Type:
Article
System:
The UNT Digital Library
Confined vortex scrubber
The program objective is to demonstrate efficient removal of fine particulates to sufficiently low levels to meet proposed small scale coal combustor emission standards. This is to be accomplished using a novel particulate removal device, the Confined Vortex Scrubber (CVS). The CVS consists of a cylindrical vortex chamber with tangential flue gas inlets. The clean gas exit is via tangent slots in a central tube. Liquid is introduced into the chamber and is confined with the vortex chamber by the centrifugal force generated by the gas flow itself. This confined liquid forms a layer through which the flue gas is then forced to bubble, producing a strong gas/liquid interaction, high inertial separation forces and efficient particulate cleanup. In effect, each of the sub-millimeter diameter gas bubbles in the liquid layer acts as a micro-cyclone, inertially separating particles into the surrounding liquid. The CVS thus obtains efficient particle removal by forcing intimate and vigorous interaction between the particle laden flue gas and the liquid scrubbing medium.
Date:
May 1, 1990
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Confined vortex scrubber. Quarterly technical progress report, January 1, 1990--March 31, 1990
The program objective is to demonstrate efficient removal of fine particulates to sufficiently low levels to meet proposed small scale coal combustor emission standards. This is to be accomplished using a novel particulate removal device, the Confined Vortex Scrubber (CVS). The CVS consists of a cylindrical vortex chamber with tangential flue gas inlets. The clean gas exit is via tangent slots in a central tube. Liquid is introduced into the chamber and is confined with the vortex chamber by the centrifugal force generated by the gas flow itself. This confined liquid forms a layer through which the flue gas is then forced to bubble, producing a strong gas/liquid interaction, high inertial separation forces and efficient particulate cleanup. In effect, each of the sub-millimeter diameter gas bubbles in the liquid layer acts as a micro-cyclone, inertially separating particles into the surrounding liquid. The CVS thus obtains efficient particle removal by forcing intimate and vigorous interaction between the particle laden flue gas and the liquid scrubbing medium.
Date:
May 1, 1990
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Conjunction of Multizone Infiltration Specialists (COMIS) fundamentals
The COMIS workshop (Conjunction of Multizone Infiltration Specialists) was a joint research effort to develop a multizone infiltration mode. This workshop (October 1988--September 1989) was hosted by the Energy Performance of Buildings Group at Lawrence Berkeley Laboratory's Applied Science Division. The task of the workshop was to develop a detailed multizone infiltration program taking crack flow, HVAC-systems, single-sided ventilation and transport mechanism through large openings into account. This work was accomplished not by investigating into numerical description of physical phenomena but by reviewing the literature for the best suitable algorithm. The numerical description of physical phenomena is clearly a task of IEA-Annex XX Air Flow Patterns in Buildings,'' which will be finished in September 1991. Multigas tracer measurements and wind tunnel data will be used to check the model. The agenda integrated all participants' contributions into a single model containing a large library of modules. The user-friendly program is aimed at researchers and building professionals. From its announcement in December 1986, COMIS was well received by the research community. Due to the internationality of the group, several national and international research programmes were co-ordinated with the COMIS workshop. Colleagues for France, Italy, Japan, The Netherlands, People's Republic of China, Spain, …
Date:
May 1, 1990
Creator:
Feustel, H.E. & Rayner-Hooson, A. (eds.)
Object Type:
Report
System:
The UNT Digital Library
Construction management at the SP-100 Ground Engineering System Test Site
The SP-100 Ground Engineering System (GES) Test Site is planned for construction at the US Department of Energy`s Hanford Site in Southeastern Washington. This project provides the Hanford Site contractors with a unique opportunity to showcase a number of design and construction innovations that significantly lower the design and construction costs while providing a facility that will effectively meet all of its design objectives. This paper will explain the organization and management of the SP-100 project, specifically those activities relating to facility design modification and construction management, as performed through the joint efforts of Westinghouse Hanford Company (Westinghouse Hanford) and Kaiser Engineers Hanford (KEH).
Date:
May 1, 1990
Creator:
Burchell, G. P. & Wilson, L. R.
Object Type:
Article
System:
The UNT Digital Library
Crack growth behavior of encapsulation processed SiC-PMMA particulate composites
The effect of processing on the fatigue crack propagation and fracture toughness of ceramic-polymer composites was investigated. A new process for composite production was developed with homogeneous particle distribution and low residual stress levels in mind. PMMA was uniformly distributed by encapsulating the SiC substrate by means of precipitation polymerization. The encapsulation processed powders were then compacted at temperatures above T{sub g} to form the composite. The encapsulation process was optimized by varying the initial concentrations of the reactants until homogeneous nucleation was suppressed. The coatings were found to be continuous at the SiC-PMMA interface, with particle agglomeration occurring between coated particles. Polymer loadings equivalent to 30 vol % SiC were achieved. Composites of several particle size ranges were tested under cyclic fatigue and static loading conditions. Fatigue growth rates and fracture toughness data display a trend of increasing crack growth resistance with increasing particle size, with encapsulation processed composites outperforming conventionally cast composites in both cyclic fatigue and fracture resistance. The largest K{sub Ic} value was found to be 2.95 MPa(m){sup 1/2}, a factor of 3 increase over un-reinforced PMMA. The roles of crack deflection, shielding, bridging, and pinning in enhancing toughness were discussed in light of crack profile …
Date:
May 1, 1990
Creator:
Sheu, C.H.
Object Type:
Report
System:
The UNT Digital Library
Creative Marketing with Exchanges
This report describes how exchanges can be applied in 12 different cases involving real estate portfolios.
Date:
May 1990
Creator:
Harris, Jack C.
Object Type:
Report
System:
The Portal to Texas History
Cross-flow filter-sorbent catalyst for particulate, SO sub 2 and NO sub x control
This report describes a new concept for integrated pollutant control: a cross-flow filter comprised of layered, gas permeable membranes that act a particulate filter, an SO{sub 2} sorbent, and a NO{sub x} reduction catalyst.
Date:
May 1, 1990
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Cross-flow filter-sorbent catalyst for particulate, SO{sub 2} and NO{sub x} control. Second quarter technical progress report
This report describes a new concept for integrated pollutant control: a cross-flow filter comprised of layered, gas permeable membranes that act a particulate filter, an SO{sub 2} sorbent, and a NO{sub x} reduction catalyst.
Date:
May 1, 1990
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Crucible melts and bench-scale ISV (in situ vitrification) tests on simulated wastes in INEL (Idaho National Engineering Laboratory) soils
This report summarizes the results of eight crucible melt tests and three bench-scale in situ vitrification (ISV) test that were performed on simulated metals/soils mixtures containing actual site soils from the Idaho National Engineering Laboratory (INEL). The crucible melt and bench-scale ISV tests are a part of efforts by the Pacific Northwest Laboratory (PNL) to assist the INEL in conducting a treatability study on ISV for application to the mixed waste buried at the INEL subsurface disposal area (SDA). The crucible melt tests were performed to evaluate the effect of various chemical additives and metal oxidation techniques on soil melting temperatures, melt viscosities, metals versus electrode oxidation potentials, and metals incorporation in the glass. The bench-scale ISV tests were performed to supplement the existing ISV data base with information on certain hazardous materials that have not been adequately evaluated in previous ISV tests. These materials included five EP toxicity metals, various volatile organic materials fixed in a cementitious matrix (including carbon tetrachloride (CCl{sub 4}), trichloroethylene (TCE), and tetrachloroethylene (PCE)), and asbestos. In addition, the bench-scale test were used to evaluated the effect of the proposed chemical additive on ISV processing performance and product quality. 8 refs., 24 figs., 19 tabs.
Date:
May 1, 1990
Creator:
Farnsworth, R. K.; Oma, K. H. & Reimus, M. A. H.
Object Type:
Report
System:
The UNT Digital Library