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Thermodynamic and Mass Balance Analysis of Expansive Phase Precipitation in Saltstone

Description: This report assesses the potential for future precipitation of expansive phases that could cause fracturing in saltstone. It examines the equilibrium case using The Geochemist's Workbench{reg_sign} reaction path model. The scenarios simulated examine the effects of different possible infiltrating fluids, different saltstone formulations, and different amounts of minerals available for reaction. Mineralogy of the vault cement and saltstone were estimated using reported chemical compositions of e… more
Date: May 1, 2008
Creator: Fletcher, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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'Fission' of Medium Weight Elements

Description: The fission reaction has been observed with high energy accelerator projectiles for elements as light as tantalum but has not been reported for medium weight elements. The present note presents evidence for the occurrence of reactions which are probably most properly described by the term 'fission' and which seem to occur with very small yield throughout the region where this type of reaction is only slightly exoergic or even endoergic with respect to mass balance. In the course of detailed inv… more
Date: May 29, 1950
Creator: Batzel, Roger T. & Seaborg, G. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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ALDEHYDE AND OTHER VOLATILE ORGANIC CHEMICAL EMISSIONS IN FOUR FEMA TEMPORARY HOUSING UNITS ? FINAL REPORT

Description: Four unoccupied FEMA temporary housing units (THUs) were studied to assess their indoor emissions of volatile organic compounds including formaldehyde. Measurement of whole-THU VOC and aldehyde emission factors (mu g h-1 per m2 of floor area) for each of the four THUs were made at FEMA's Purvis MS staging yard using a mass balance approach. Measurements were made in the morning, and again in the afternoon in each THU. Steady-state indoor formaldehyde concentrations ranged from 378 mu g m-3 (0.3… more
Date: May 4, 2008
Creator: Salazar, Olivia; Maddalena, Randy L.; Russell, Marion; Sullivan, Douglas P. & Apte, Michael G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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THERMODYNAMIC AND MASS BALANCE ANALYSIS OF EXPANSIVE PHASE PRECIPITATION IN SALTSTONE

Description: This report assesses the potential for future precipitation of expansive phases that could cause fracturing in saltstone. It examines the equilibrium case using The Geochemist's Workbench{reg_sign} reaction path model. The scenarios simulated examine the effects of different possible infiltrating fluids, different saltstone formulations, and different amounts of minerals available for reaction. Mineralogy of the vault cement and saltstone were estimated using reported chemical compositions of e… more
Date: May 6, 2008
Creator: Denham, M
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Source characterization studies at the Paraho semiworks oil shale retort. [Redistribution of trace and major elements]

Description: In order to determine the redistribution of trace and major elements and species during aboveground oil shale retorting, a comprehensive program was carried out for the sampling and analysis of feedstock, products, effluents, and ambient particulates from the Paraho Semiworks Retort. Samples were obtained during two periods in 1977 when the retort was operating in the direct mode. The data were used to construct mass balances for 31 trace and major elements in various effluents, including the o… more
Date: May 1, 1979
Creator: Fruchter, J.S.; Wilkerson, C.L.; Evans, J.C.; Sanders, R.W. & Abel, K.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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TREATABILITY STUDY FOR EDIBLE OIL DEPLOYMENT FOR ENHANCED CVOC ATTENUATION FOR T-AREA, SAVANNAH RIVER SITE

Description: Groundwater beneath T-Area, a former laboratory and semiworks operation at the Department of Energy (DOE) Savannah River Site (SRS), is contaminated by chlorinated solvents (cVOCs). Since the contamination was detected in the 1980s, the cVOCs at T-Area have been treated by a combination of soil vapor extraction and groundwater pump and treat. The site received approval to temporarily discontinue the active groundwater treatment and implement a treatability study of enhanced attenuation - an eng… more
Date: May 15, 2012
Creator: Riha, B.; Looney, B.; Noonkester, J.; Hyde, W. & Walker, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Isotope exchange kinetics in metal hydrides I : TPLUG model.

Description: A one-dimensional isobaric reactor model is used to simulate hydrogen isotope exchange processes taking place during flow through a powdered palladium bed. This simple model is designed to serve primarily as a platform for the initial development of detailed chemical mechanisms that can then be refined with the aid of more complex reactor descriptions. The one-dimensional model is based on the Sandia in-house code TPLUG, which solves a transient set of governing equations including an overall m… more
Date: May 1, 2011
Creator: Larson, Rich; James, Scott Carlton & Nilson, Robert H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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SDI CFD MODELING ANALYSIS

Description: The Savannah River Remediation (SRR) Organization requested that Savannah River National Laboratory (SRNL) develop a Computational Fluid Dynamics (CFD) method to mix and blend the miscible contents of the blend tanks to ensure the contents are properly blended before they are transferred from the blend tank; such as, Tank 50H, to the Salt Waste Processing Facility (SWPF) feed tank. The work described here consists of two modeling areas. They are the mixing modeling analysis during miscible liqu… more
Date: May 5, 2011
Creator: Lee, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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DWPF FLOWSHEET STUDIES WITH SIMULANTS TO DETERMINE MCU SOLVENT BUILD-UP IN CONTINOUS RUNS

Description: The Actinide Removal Process (ARP) facility and the Modular Caustic Side Solvent Extraction Unit (MCU) are scheduled to begin processing salt waste in fiscal year 2007. A portion of the streams generated in these salt processing facilities will be transferred to the Defense Waste Processing Facility (DWPF) to be incorporated in the glass matrix. Before the streams are introduced, a combination of impact analyses and research and development studies must be performed to quantify the impacts on D… more
Date: May 25, 2006
Creator: Lambert, D; Frances Williams, F; S Crump, S; Russell Eibling, R; Thomas02 White, T & David Best, D
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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JV Task-123 Determination of Trace Element Concentrations at an Eastern Bituminous Coal Plant Employing an SCR and Wet FGD

Description: The Energy & Environmental Research Center (EERC), in partnership with Babcock & Wilcox (B&W) and with funding from U.S. Department of Energy (DOE), conducting tests to prove that a high level of mercury control (>90%) can be achieved at a power plant burning a high-sulfur eastern bituminous coal. With funding from the Electric Power Research Institute (EPRI), DOE, and Center for Air Toxic Metals{reg_sign} (CATM{reg_sign}) Affiliates Program, the EERC completed an additional sampling pro… more
Date: May 1, 2008
Creator: Laudal, Dennis
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Spent Nuclear Fuel (SNF) Project Canister Storage Building (CSB) Process Flow Diagram Mass Balance Calculations

Description: The purpose of these calculations is to develop the material balances for documentation of the Canister Storage Building (CSB) Process Flow Diagram (PFD) and future reference. The attached mass balances were prepared to support revision two of the PFD for the CSB. The calculations refer to diagram H-2-825869.
Date: May 11, 2000
Creator: KLEM, M.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Conbined noble gas and stable isotope constraints on nitrogen gas sources within sedimentary basins. Final report for period 15 March 1996 - 14 March 1999 extended to 14 March 2000

Description: Nitrogen is one of the major non-hydrocarbon gases found in natural gas reservoirs. The objective of this work was to combine the information available from both noble gas and stable isotope systematics to understand the origin of nitrogen and related gas sources, transport behavior, and mass balance within natural gas reservoirs and sedimentary basin systems. The goals achieved are summarized under the following headings: Noble gas and stable isotopes in nitrogen-rich natural gases; Noble gase… more
Date: May 1, 2001
Creator: Ballentine, C.J.; Halliday, Alexander N. & Lollar, B. Sherwood
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Atlas Breached Waste Package and Drip Shield Experiments: Breached Drip Shield Tests

Description: The Engineered Barrier System (EBS) represents one system in the performance of the Yucca Mountain high-level radioactive waste (HLW) repository to isolate and prevent the transport of radionuclides from the site to the accessible environment. Breached Waste Package and Drip Shield Experiments (BWPDSE) were performed at the Department of Energy's National Nuclear Security Administration Nevada Support Facility in North Las Vegas, NV in the A-1 lowbay between May 2, 2002 and July 25, 2002. Data … more
Date: May 28, 2003
Creator: Walton, Z. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Field Studies of Streamflow Generation Using Natural and Injected Tracers on Bickford and Walker Branch Watersheds

Description: Field studies of streamflow generation were undertaken on two forested watersheds, the West Road subcatchment of Bickford Watershed in central Massachusetts and the West Fork of Walker Branch Watershed in eastern Tennessee. A major component of the research was development of a two-stage methodology for the use of naturally-occurring {sup 222}Rn as a tracer. The first of the two stages was solving a mass-balance equation for {sup 222}Rn around a stream reach of interest in order to calculate [R… more
Date: May 1992
Creator: Genereux, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Brine flow up a borehole caused by pressure perturbation from CO2 storage: Static and dynamic evaluations

Description: Industrial-scale storage of CO{sub 2} in saline sedimentary basins will cause zones of elevated pressure, larger than the CO{sub 2} plume itself. If permeable conduits (e.g., leaking wells) exist between the injection reservoir and overlying shallow aquifers, brine could be pushed upwards along these conduits and mix with groundwater resources. This paper discusses the potential for such brine leakage to occur in temperature- and salinity-stratified systems. Using static mass-balance calculatio… more
Date: May 1, 2011
Creator: Birkholzer, J.T.; Nicot, J.-P.; Oldenburg, C.M.; Zhou, Q.; Kraemer, S. & Bandilla, K.W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Pulsed atmospheric fluidized bed combustion. Technical progress report, January 1, 1993--March 31, 1993

Description: As reported in previous quarterly reports, the fabrication of the fluid bed vessel, hot cyclone, coal handling system components, and coal/limestone feed systems is underway. Procurement of long lead time items was initiated in October 1992, and.deliveries are being made on schedule. In this quarterly period the following design tasks were accomplished. Mass and energy balance review and optimization; system operation calibrations; piping pressure drop design calculations; and pipe sizing and l… more
Date: May 1, 1993
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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EFFECTS OF TRITIUM EXPOSURE ON UHMW-PE, PTFE, AND VESPEL

Description: Samples of three polymers, Ultra-High Molecular Weight Polyethylene (UHMW-PE), polytetrafluoroethylene (PTFE, also known as Teflon{reg_sign}), and Vespel{reg_sign} polyimide were exposed to 1 atmosphere of tritium gas at ambient temperature for varying times up to 2.3 years in closed containers. Sample mass and size measurements (to calculate density), spectra-colorimetry, dynamic mechanical analysis (DMA), and Fourier-transform infrared spectroscopy (FT-IR) were employed to characterize the ef… more
Date: May 31, 2006
Creator: Clark, E & Kirk Shanahan, K
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Evaluation and Modification of ASPEN Fixed-bed Gasifier Models for Inclusion in an Integrated Gasification Combined-Cycle Power Plant Simulation

Description: Several Advanced System for Process Engineering (ASPEN) fixed-bed gasifier models have been evaluated to determine which is the most suitable model for use in an integrated gasification combined-cycle (IGCC) power plant simulation. Four existing ASPEN models were considered: RGAS, a dry ash gasifier model developed by Halcon/Scientific Design Company; USRWEN, the WEN II dry ash gasifier model originally developed by C.Y. Wen at West Virginia University; the slagging gasifier model developed by … more
Date: May 1, 1985
Creator: Stefano, J.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Monitored Natural Attenuation and Enhanced Attenuation for Chlorinated Solvent Plumes - It's All About Balance

Description: Nature's inherent ability to cleanse itself is at the heart of Monitored Natural Attenuation (MNA). The complexity comes when one attempts to measure and calculate this inherent ability, called the Natural Attenuation Capacity (NAC), and determine if it is sufficient to cleanse the system to agreed upon criteria. An approach that is simple in concept for determining whether the NAC is sufficient for MNA to work is the concept of a mass balance. Mass balance is a robust framework upon which all … more
Date: May 19, 2005
Creator: Vangelas, Karen
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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In Situ Hydrocarbon Degradation by Indigenous Nearshore Bacterial Populations

Description: Potential episodic hydrocarbon inputs associated with oil mining and transportation together with chronic introduction of hydrocarbons via urban runoff into the relatively pristine coastal Florida waters poses a significant threat to Florida's fragile marine environment. It is therefore important to understand the extent to which indigenous bacterial populations are able to degrade hydrocarbon compounds and also determine factors that could potentially control and promote the rate at which thes… more
Date: May 16, 2005
Creator: Cherrier, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Hydrologic transport of depleted uranium associated with open air dynamic range testing at Los Alamos National Laboratory, New Mexico, and Eglin Air Force Base, Florida

Description: Hydrologic investigations on depleted uranium fate and transport associated with dynamic testing activities were instituted in the 1980`s at Los Alamos National Laboratory and Eglin Air Force Base. At Los Alamos, extensive field watershed investigations of soil, sediment, and especially runoff water were conducted. Eglin conducted field investigations and runoff studies similar to those at Los Alamos at former and active test ranges. Laboratory experiments complemented the field investigations … more
Date: May 1, 1995
Creator: Becker, N. M. & Vanta, E. B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Development of a high-performance coal-fired power generating system with pyrolysis gas and char-fired high-temperature furnace (HITAF): Volume 3. Final report

Description: Testing of an atmospheric circulating bed pyrolyzer was done at Southern Illinois University. A variety of experiments have been conducted in a laboratory scale pyrolyzer with coal input flow rates from 2 to 6 lb/h. three feed coal particle sizes, corresponding to a nominal -40 mesh, -30 mesh and -18 mesh were used. The limestone used in the tests was a Genstar limestone. Parameters investigated in the tests include the influence of superficial velocity, temperature and coal-air mass ratios. Ch… more
Date: May 1, 1996
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Liquid radioactive waste discharges from B plant to cribs

Description: This engineering report compiles information on types and quantities of liquid waste discharged from B-Plant directly to cribs, ditches, reverse wells, etc., that are associated with B-Plant. Waste discharges to these cribs via overflow form 241-B, 241-BX, and 241-BY tank farms, and waste discharged to these cribs from sources other than B-Plant are discussed.Discharges from B-Plant to other cribs, unplanned releases, or waste remaining in tanks are not included in the report. Waste stream comp… more
Date: May 29, 1996
Creator: Williams, J. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Isotopic investigation of recharge to a regional groundwater flow system, Great Basin, NV

Description: Groundwater recharge processes were investigated in central Nevada by examining the relationships between the stable isotope ({delta}D and {delta}{sup 18}O) compositions of snowfall, snowmelt, alpine spring waters, and regional groundwaters. Snowmelt infiltration is inferred to he the dominant source of groundwater recharge in this region. Bulk snow cores collected throughout central Nevada near the time of maximum accumulation have {delta}D and {delta}{sup 18}O pairs that plot subparallel to t… more
Date: May 4, 1999
Creator: Criss, R E; Davisson, M L; Rose, T & Smith, D K
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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