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Glossary: Carbon dioxide and climate (open access)

Glossary: Carbon dioxide and climate

This Glossary contains definitions of selected CO{sub 2}-related terms as well as tables containing information related to CO{sub 2} and climate. Each term is defined with an emphasis on its relationship to CO{sub 2} and climate. Many of the definitions are then followed by a more detailed description of the term and its use. References to the literature from which the definitions were taken are listed at the end of the Glossary.
Date: August 1, 1990
Creator: unknown
Object Type: Report
System: The UNT Digital Library
TRAC L reactor model: Geometry review and benchmarking (open access)

TRAC L reactor model: Geometry review and benchmarking

The analysis of the Design Basis Loss of Coolant Acident (LOCA) for Savannah River Site (SRS) reactors involves the best estimate reactor system thermal-hydraulics code TRAC-PFI/MOD1. Power levels for the L-3.1 and P-10.2 subcycles were determined based, in part, on TRAC analyses of the first few seconds of a plenum inlet break LOCA. The TRAC code is currently being used to analyze reactor system response for the Double Ended Guillotine Break (DEGB) LOCA, the Expansion Joint Bellows Break LOCA, the Loss of Pumping Accident (LOPA), and the Pump Shaft Break event. Currently, the DEGB LOCA analysis is performed with TRAC only for the flow instability (FI) phase of the accident. This analysis provides input to the determination of operating power limits for the K-14.1 subcycle.
Date: August 1, 1990
Creator: Griggs, D.P. (Westinghouse Savannah River Co., Aiken, SC (United States)) & Cozzuol, J.M. (Idaho National Engineering Lab., Idaho Falls, ID (United States))
Object Type: Report
System: The UNT Digital Library
Development of alternative oxygen production source using a zirconia solid electrolyte membrane (open access)

Development of alternative oxygen production source using a zirconia solid electrolyte membrane

The objective of this multiyear effort was the development, fabrication and testing of a zirconia oxygen production module capable of delivering approximately 100 liters/minute (LPM) of oxygen. The work discussed in this report consists of development and improvement of the zirconia cell along with manufacture of cell components, preliminary design of the final plant, additional economic analysis and industrial participation. (VC)
Date: August 1, 1990
Creator: Suitor, J. W.; Clark, D. J. & Losey, R. W.
Object Type: Report
System: The UNT Digital Library
Critical heat flux concerns during the flow instability phase of a DEGB LOCA (open access)

Critical heat flux concerns during the flow instability phase of a DEGB LOCA

Arguments are presented that support the proposal that a separate burnout risk analysis, for the Flow Instability (FI) phase of a LOCA, not be required for reactor restart. With expected reactor power limits, flow instability will occur before critical heat flux (CHF). Since FI power limits preclude the occurrence of flow instability in a bounding accident, a DEGB LOCA, the risk of CHF and attendant burnout is negligible. A review of RDAP data revealed that in the past reactor assemblies operated at flow and power conditions similar to those expected in a LOCA without burnout occurring. This is strong bounding empirical evidence, without the scaling concerns of laboratory experiments. A bounding analysis of the influences of assembly non-idealities on CHF, power tilts, and channel eccentricity, is included. The margin between operating heat fluxes, during the postulated LOCA, and CHF was quantified by scoping calculations. Based on measured azimuthal power variations, the local heat flux would have to be more than 20 standard deviations above the calculated mean heat flux for CHF to occur.
Date: August 1, 1990
Creator: Shadday, M.A. Jr.
Object Type: Report
System: The UNT Digital Library
User's guide to the MATS data (open access)

User's guide to the MATS data

Data collected for the 37 Mesoscale Transport Studies (MATS) experiments are available on a single, double-sided, high-density (1.2MB), IBM-formatted, 5.25 in. floppy disk (MATS disk). Standard ASCII characters are used. This report discusses how to install this disk, symbols used, format of the ratio, and the sample experiment.
Date: August 1, 1990
Creator: Berman, S. (Savannah River Lab., Aiken, SC (United States))
Object Type: Report
System: The UNT Digital Library
The complexation behavior of neptunium and plutonium with nitrilotriacetic acid (open access)

The complexation behavior of neptunium and plutonium with nitrilotriacetic acid

The first stability constant of NpO{sub 2}{sup +} with nitrilotriacetic acid (NTA) was determined at four ionic strengths (0.5, 1.0, 2.0, 3.0 M) using spectrophotometry. Nonlinear least-squares data fitting identified the complex as NpO{sub 2}NTA{sup 2-}. The Specific Ion Interaction Theory (S.I.T) approximation method was used to determine the stability constants at infinite dilution. First results on Pu{sup 4+} and PuO{sub 2}{sup 2+} complexation with NTA are reported. The stability constant for the Pu(NTA){sup +} complex at I = 0.1 M strength is given. From results for PuO{sub 2}{sup 2+} complexation with NTA (I = 1 M) at pH < 3, the stability constant was derived for PuO{sub 2} NTA{sup {minus}}. At pH > 3, NTA partially reduced PuO{sub 2}{sup 2+} to PuO{sub 2}{sup +}. 3 refs., 5 figs., 4 tabs.
Date: August 1, 1990
Creator: Nitsche, H. & Becraft, K.
Object Type: Article
System: The UNT Digital Library
Low enrichment fuel conversion for Iowa State University (open access)

Low enrichment fuel conversion for Iowa State University

Work during the reported period was centered primarily in preparation for receiving the LEU fuel and the shipping of the HEU fuel. The LEU fuel has not been received. The HEU fuel assemblies for the UTR-10 reactor will not fit into any current research reactor shipping containers; therefore, the fuel assemblies must be disassembled and the fuel shipped as fuel plates. Procedures and practices have been developed so that the fuel assemblies will be disassembled in a shielded environment.
Date: August 1, 1990
Creator: Rohach, A.F. & Hendrickson, R.A.
Object Type: Report
System: The UNT Digital Library
Current emission trends for nitrogen oxides, sulfur dioxide, and volatile organic compounds by month and state: Methodology and results (open access)

Current emission trends for nitrogen oxides, sulfur dioxide, and volatile organic compounds by month and state: Methodology and results

This report presents estimates of monthly sulfur dioxide (SO{sub 2}), nitrogen oxides (NO{sub x}), and nonmethane voltatile organic compound (VOC) emissions by sector, region, and state in the contiguous United States for the years 1975 through 1988. This work has been funded as part of the National Acid Precipitation Assessment Program's Emissions and Controls Task Group by the US Department of Energy (DOE) Office of Fossil Energy (FE). The DOE project officer is Edward C. Trexler, DOE/FE Office of Planning and Environment.
Date: August 1, 1990
Creator: Kohout, E. J.; Miller, D. J.; Nieves, L. A.; Rothman, D. S.; Saricks, C. L.; Stodolsky, F. et al.
Object Type: Report
System: The UNT Digital Library
Operations, Maintenance, and Replacement 10-Year Plan, 1990--1999 (open access)

Operations, Maintenance, and Replacement 10-Year Plan, 1990--1999

In 1988 Bonneville Power Administration (BPA) began work on this Operations, Maintenance, and Replacement 10-Year Plan to develop a levelized program that would assure high system reliability. During the Programs in Perspective (PIP) meetings in the later summer and fall of 1988, many of the concerns to be addressed in an Operations, Maintenance, and Replacement Plan were identified. Following these PIP meetings BPA established internal work groups. During the winter and spring of 1989, these work groups developed technical background and issue papers on topics that ranged from substation maintenance to environmental protection. In addition, a customer forum group was established and met on several occasions to review work on the plan, to offer ideas and points of view, and to assure that BPA understood customer concerns. Based on recommendations from the work group reports and customer input, BPA's O M Management Team developed the draft Operations, Maintenance, and Replacement 10-Year Plan that was released for public comment during the spring of 1990. During the public review period, BPA received a number of written comments from customers and the interested public. In addition, special meetings were held with interested customers. This final Operations, Maintenance, and Replacement 10-year Plan reflects BPA's …
Date: August 1, 1990
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Conservation screening curves to compare efficiency investments topower plants: Applications to commercial sector conservationprograms (open access)

Conservation screening curves to compare efficiency investments topower plants: Applications to commercial sector conservationprograms

This paper describes a simplified methodology to compare supply and demand-side resources. The screening curve approach supplements with load shape information the data contained in a supply curve of conserved energy. In addition, a screening curve contains information on competing supply technologies, such as annualized capital costs, variable costs, and cost per delivered kWh. The information in the screening curve allows policymakers to promptly and conveniently compare the relevant parameters affecting supply and demand-side investment decisions. While many sophisticated computer models have evolved to account for the load shape impacts of energy efficiency investments, this sophistication has, by and large, not trickled down to spreadsheet-level or 'back-of-the-envelope' analyses. Our methodology allows a simple summary of load shape characteristics based on the output of the more complicated models. It offers many advantages, principal of which is clarity in analyzing supply and demand-side investment choices. This paper first describes how supply-side screening curves have been used in the past, and develops the conceptual tools needed to apply integrated supply/demand screening curves in the least-cost utility planning process. It then presents examples of supply-side technologies and commercial sector demand-side management programs, and plots them on representative screening curves.
Date: August 1, 1990
Creator: Koomey, Jonathan; Rosenfeld, Arthur H. & Gadgil, Ashok J.
Object Type: Article
System: The UNT Digital Library
A balloon-borne aerosol spectrometer for high altitude low aerosol concentration measurements (open access)

A balloon-borne aerosol spectrometer for high altitude low aerosol concentration measurements

Funded by Air Force Wright Aeronautical Laboratory, a new balloon-borne high altitude aerosol spectrometer, for the measurement of cirrus cloud ice crystals, has been developed and successfully flown by Sandia National Laboratories and Radiance Research. This report (1) details the aerosol spectrometer design and construction, (2) discusses data transmission and decoding, (3) presents data collected on three Florida flights in tables and plots. 2 refs., 11 figs., 3 tabs.
Date: August 1, 1990
Creator: Brown, G.S. (Sandia National Labs., Albuquerque, NM (USA)) & Weiss, R.E. (Radiance Research, Seattle, WA (USA))
Object Type: Report
System: The UNT Digital Library
Development of polymer concrete vaults for natural gas regulator stations (open access)

Development of polymer concrete vaults for natural gas regulator stations

Vaults for natural gas regulator stations have traditionally been fabricated with steel-reinforced portland cement concrete. Since these vaults are installed below ground level, they are usually coated with a water-proofing material to prevent the ingress of moisture into the vault. In some cases, penetrations for piping that are normally cast into the vault do not line up with the gas lines in the streets. This necessitates off-setting the lines to line up with the penetrations in the vault or breaking out new penetrations which could weaken the structure and/or allow water ingress. By casting the vaults using a new material of construction such as polymer concrete, a longer maintenance free service life is possible because the physical and durability properties of polymer concrete composites are much superior to those of portland cement concrete. The higher strengths of polymer concrete allow the design engineer to reduce the wall, floor, and ceiling thicknesses making the vaults lighter for easier transportation and installation. Penetrations can be cut after casting to match existing street lines, thus making the vault more universal and reducing the number of vaults that are normally in stock. The authors developed a steel-fiber reinforced polymer concrete composite that could be …
Date: August 1, 1990
Creator: Fontana, J.J.; Miller, C.A.; Reams, W. & Elling, D.
Object Type: Report
System: The UNT Digital Library
Mineralogical correlation of surficial sediment from area drainages with selected sedimentary interbeds at the Idaho National Engineering Laboratory, Idaho (open access)

Mineralogical correlation of surficial sediment from area drainages with selected sedimentary interbeds at the Idaho National Engineering Laboratory, Idaho

Ongoing research by the US Geological Survey at the INEL involves investigation of the migration of radioactive elements contained in low-level radioactive waste, hydrologic and geologic factors affecting waste movement, and geochemical factors that influence the chemical composition of the waste. Identification of the mineralogy of the Snake River Plain is needed to aid in the study of the hydrology and geochemistry of subsurface waste disposal. The US Geological Surveys project office at the Idaho National Engineering Laboratory, in cooperation with the US Department of Energy, used mineralogical data to correlate surficial sediment samples from the Big Lost River, Little Lost River, and Birch Greek drainages with selected sedimentary interbed core samples taken from test holes at the RWMC (Radioactive Waste Management Complex), TRA (Test Reactors Area), ICPP (Idaho Chemical Processing Plant), and TAN (Test Area North). Correlating the mineralogy of a particular present-day drainage area with a particular sedimentary interbed provides information on historical source of sediment for interbeds in and near the INEL. Mineralogical data indicate that surficial sediment samples from the Big Lost River drainage contained a larger amount of feldspar and pyroxene and a smaller amount of calcite and dolomite than samples from the Little Lost …
Date: August 1, 1990
Creator: Bartholomay, R.C.
Object Type: Report
System: The UNT Digital Library
Sampling and analysis plan for site assessment during the closure or replacement of nonradioactive underground storage tanks (open access)

Sampling and analysis plan for site assessment during the closure or replacement of nonradioactive underground storage tanks

The Tank Management Program is responsible for closure or replacement of nonradioactive underground storage tanks throughout the Idaho National Engineering Laboratory (INEL). A Sampling and Analysis Plan (SAP) has been developed that complies with EPA regulations and with INEL Tank Removal Procedures for sampling activities associated with site assessment during these closure or replacement activities. The SAP will ensure that all data are valid, and it also will function as a Quality Assurance Project Plan. 18 refs., 8 figs., 11 tabs.
Date: August 1, 1990
Creator: Gitt, M.J.
Object Type: Report
System: The UNT Digital Library
Variational transition state theory calculations of tunneling effects on concerted hydrogen motion in water clusters and formaldehyde/water clusters (open access)

Variational transition state theory calculations of tunneling effects on concerted hydrogen motion in water clusters and formaldehyde/water clusters

The direct participation of water molecules in aqueous phase reaction processes has been postulated to occur via both single-step mechanisms as well as concerted hydrogen atom or proton shifts. In the present work, simple prototypes of concerted hydrogen atom transfer processes are examined for small hydrogen-bonded water clusters -- cyclic trimers and tetramers -- and hydrogen-bonded clusters of formaldehyde with one and two water molecules. Rate constants for the rearrangement processes are computed using variational transition state theory, accounting for quantum mechanical tunneling effects by semiclassical ground-state adiabatic transmission coefficients. The variational transition state theory calculations directly utilize selected information about the potential energy surface along the minimum energy path as parameters of the reaction path Hamiltonian. The potential energy information is obtained from ab ignite electronic structure calculations with an empirical bond additivity correction (the BAC-MP4 method). Tunneling is found to be very important for these concerted rearrangement processes -- the semiclassical ground-state adiabatic transmission coefficients are estimated to be as high as four order of magnitude at room temperature. Effects of the size of the cluster (number of water molecules in the cyclic complex) are also dramatic -- addition of a water molecule is seen to change the …
Date: August 1, 1990
Creator: Garrett, B.C. (Pacific Northwest Lab., Richland, WA (USA)) & Melius, C.F. (Sandia National Labs., Livermore, CA (USA))
Object Type: Article
System: The UNT Digital Library
Chemical characterization of the surface sites of coal (open access)

Chemical characterization of the surface sites of coal

This report briefly describes the computer codes chart and kid as part of a data analysis program on coal research. 1 fig. (CBS)
Date: August 1, 1990
Creator: Fowkes, F.M. & Cole, D.A.
Object Type: Report
System: The UNT Digital Library
Communication of emergency public warnings: A social science perspective and state-of-the-art assessment (open access)

Communication of emergency public warnings: A social science perspective and state-of-the-art assessment

More than 200 studies of warning systems and warning response were reviewed for this social science perspective and state-of-the-art assessment of communication of emergency public warnings. The major findings are as follows. First, variations in the nature and content of warnings have a large impact on whether or not the public heeds the warning. Relevant factors include the warning source; warning channel; the consistency, credibility, accuracy, and understandability of the message; and the warning frequency. Second, characteristics of the population receiving the warning affect warning response. These include social characteristics such as gender, ethnicity and age, social setting characteristics such as stage of life or family context, psychological characteristics such as fatalism or risk perception, and knowledge characteristics such as experience or training. Third, many current myths about public response to emergency warning are at odds with knowledge derived from field investigations. Some of these myths include the keep it simple'' notion, the cry wolf'' syndrome, public panic and hysteria, and those concerning public willingness to respond to warnings. Finally, different methods of warning the public are not equally effective at providing an alert and notification in different physical and social settings. Most systems can provide a warning given three …
Date: August 1, 1990
Creator: Mileti, D.S. (Colorado State Univ., Fort Collins, CO (USA)) & Sorensen, J.H. (Oak Ridge National Lab., TN (USA))
Object Type: Report
System: The UNT Digital Library
Operation Cornerstone onsite radiological safety report for announced nuclear tests, October 1988--September 1989 (open access)

Operation Cornerstone onsite radiological safety report for announced nuclear tests, October 1988--September 1989

Cornerstone was the name assigned to the series of underground nuclear experiments conducted at the Nevada Test Site (NTS) from October 1, 1988, through September 30, 1989. This report includes those experiments publicly announced. Remote radiation measurements were taken during and after each nuclear experiment by a telemetry system. Radiation Protection Technicians (RPT) with portable radiation detection instruments surveyed reentry routes into ground zeros (GZ) before other planned entries were made. Continuous surveillance was provided while personnel were in radiation areas and appropriate precautions were taken to protect persons from unnecessary exposure to radiation and toxic gases. Protective clothing and equipment were issued as needed. Complete radiological safety and industrial hygiene coverage were provided during drilling and mineback operations. Telemetered and portable radiation detector measurements are listed. Detection instrumentation used is described and specific operational procedures are defined.
Date: August 1, 1990
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Remarks on B-physics with interactions of pp and e sup + e sup minus (open access)

Remarks on B-physics with interactions of pp and e sup + e sup minus

We compare the B-physics that could be studied with pp or e{sup +}e{sup {minus}} interactions. The pp colliders at cm energies of 16 TeV (LHC) and 40 TeV (SSC) as well as asymmetric e{sup +}e{sup {minus}} colliders at the {Upsilon}(4S) cm energy are considered. In the case of pp interactions, we discuss the B production using pp colliders and a p beam with an external fixed target. For this preliminary comparison we explore the possibility of searching CP violation in the B{sub d}{sup 0}, {bar B}{sub d}{sup 0} {yields} J/{psi}K{sub s}{sup 0}, {pi}{sup +}{pi}{sup {minus}} decays. 25 refs., 4 figs.
Date: August 1, 1990
Creator: Fridman, A. (Stanford Linear Accelerator Center, Menlo Park, CA (USA) Paris-6 Univ., 75 (France) Paris-7 Univ., 75 (France)) & Snyder, A. (Stanford Linear Accelerator Center, Menlo Park, CA (USA))
Object Type: Article
System: The UNT Digital Library
Biological Remediation of Contaminated Soils at Los Angeles Air Force Base: Facility Design and Engineering Cost Estimate (open access)

Biological Remediation of Contaminated Soils at Los Angeles Air Force Base: Facility Design and Engineering Cost Estimate

This report presents a system design for using bioremediation to treat contaminated soil at Fort MacArthur near Los Angeles, California. The soil was contaminated by petroleum products that leaked from two underground storage tanks. Laboratory studies indicated that, with the addition of water and nutrients, soil bacteria can reduce the petroleum content of the soils to levels that meet regulatory standards. The system design includes soil excavation, screening, and mixing; treatment in five soil-slurry/sequencing-batch reactors; and dewatering by a rapid-infiltration basin. System specifications and cost estimates are provided. 5 refs., 8 figs., 5 tabs.
Date: August 1, 1990
Creator: Montemagno, C. D. & Irvine, R. L.
Object Type: Report
System: The UNT Digital Library
Two-stage, close coupled catalytic liquefaction of coal (open access)

Two-stage, close coupled catalytic liquefaction of coal

Research continued on two-stage close coupled catalytic coal liquefaction. During the second quarter of 1990, experimental studies were carried out in the microautoclave and Bench Units. Updating of the economics of two-stage processing continued as did process modelling activities. Bench-scale operations consisted of the completion of Run 227-66 (CC-8), an OTISCA cleaned coal evaluation, and Run CC-9, a solids separation study of delayed coking. The OTISCA Cleaned Coal Evaluation and Delayed Coking Trials were successfully concluded. The economics of Eastern US bituminous coal liquefaction were updated to a 1991 basis. For an 8400 ton/day plant, an investment of 1.6 billion is estimated. 1 fig., 13 tabs.
Date: August 1, 1990
Creator: Comolli, A. G.; Johanson, E. S.; Panvelker, S. V. & Popper, G. A.
Object Type: Report
System: The UNT Digital Library
Compliance of the Savannah River Site D-Area cooling system with environmental regulations (open access)

Compliance of the Savannah River Site D-Area cooling system with environmental regulations

This document presents information relating to a demonstration under Section 316(a) of the Clean Water Act for the 400-D Area cooling system at the Savannah River Site (SRS) near Aiken, South Carolina. The demonstration was mandated because the National Pollution Discharge Elimination System (NPDES) permit for SRS (SC0000175), granted on January 1, 1984, specified in-stream temperature limits in SRS streams of 32.2{degree}C and a {Delta}T limit of 2.8{degree}C above ambient. To achieve compliance with in-stream temperature limits, the Department of Energy (DOE) and the South Carolina Department of Health and Environmental Control (SCDHEC) entered into a Consent Order (84-4-W) which temporarily superseded the temperature requirements and identified a process for attaining compliance. The preferred option for achieving thermal compliance in Beaver Dam Creek consisted of increased flow, with mixing of the raw water basin overflow with the cooling water discharge during the summer months. Although this action can achieve instream temperatures of less than 32.2{degree}C, {Delta}T's still exceed 2.8{degree}C. Therefore, a 316 (a) Demonstration was initiated to determine whether a balanced indigenous biological community can be supported in the receiving stream with {Delta}T's in excess of 2.8{degree}C. A Biological Monitoring Program for Beaver Dam Creek was approved by SCDHEC in …
Date: August 1, 1990
Creator: Specht, W. L.; Mackey, H. E.; Paller, M. H.; Wike, L. D. & Wilde, E. W. (eds.)
Object Type: Report
System: The UNT Digital Library
Sensitivity of stratospheric ozone to present and possible future aircraft emissions (open access)

Sensitivity of stratospheric ozone to present and possible future aircraft emissions

The aircraft industry is showing renewed interest in the development of supersonic, high flying aircraft for intercontinental passenger flights. There appears to be confidence that such high-speed civil transports can be designed, and that aircraft will be economically viable as long as they are also environmentally acceptable. As such, it is important to establish the potential for such environmental problems early in the aircraft design. Initial studies with LLNL models of global atmospheric chemical, radiative, and transport processes have indicated that substantial decreases in stratospheric ozone concentrations could result from emissions of NO{sub x} from aircraft flying the stratosphere, depending on the fleet size and magnitude of the engine emissions. The purpose of this study is to build on previous analyses of potential aircraft emission effects on ozone in order to better define the sensitivity of ozone to such emissions. In addition to NO{sub x}, the effects of potential emissions of carbon monoxide and water vapor are also examined. More realistic scenarios for the emissions as a function of altitude, latitude, and season are examined in comparison to prior analyses. These studies indicate that the effects on ozone are sensitive to the altitude and latitude, as well as the magnitude, …
Date: August 1, 1990
Creator: Wuebbles, D.J. & Kinnison, D.E.
Object Type: Article
System: The UNT Digital Library
An approach for testing attainment of soil background standards at Superfund sites (open access)

An approach for testing attainment of soil background standards at Superfund sites

After the soil at a Superfund site has been remediated it is necessary to determine if the remediation effort has been successful. This determination involves comparing concentrations in soil at the remediated site with cleanup standards. The cleanup standard may be based on technological capabilities a risk assessment, or site-specific background concentrations. In this paper we discuss an approach for using two complementary nonparametric tests, the Wilcoxon Rank Sum (WRS) test and the Quantile test, to assess attainment of site-specific background standards at remediated Superfund sites. The tests are complementary in the sense that the WRS test is more powerful than the Quantile test to defect shift alternatives, i.e., to detect when the remedial action failed more or less uniformly throughout the Superfund site, whereas the Quantile test has more power than the WRS test to detect mixture alternatives, i.e., to detect when remedial action was inadequate in only a portion of the site. The approximate minimum power of the Quantile test is obtained and used to develop sample size tables for the test. A simple hot spot'' test is also used to insure that remedial action is conducted at least locally when any measurement exceeds a specified upper-limit value. …
Date: August 1, 1990
Creator: Gilbert, R. O. & Simpson, J. C.
Object Type: Article
System: The UNT Digital Library