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Estimates of DWPF canister production

Description: Specification 1.2 of the repository program's Waste Acceptance Preliminary Specifications requires that the DWPF estimate the radionuclide inventory, and provide the error of the estimate, for each waste type (assumed to be each sludge batch). The inventory of any radionuclide is directly proportional to the number of canisters produced from that sludge batch. Thus, estimating the number of canisters to be produced from each sludge batch is an important part of complying with this specification… more
Date: December 6, 1991
Creator: Plodinec, M. J.
open access

Microseismic monitoring of the Chaveroo oil field, New Mexico

Description: Microseismicity was monitored in the Chaveroo oil field in southeastern New Mexico during, and for 5 weeks following, a pressurized stimulation of a well being prepared as an injector for a water flood operation. Three-thousand barrels of water were injected into the reservoir over a 5.5-hour period. Little seismicity was detected during the stimulation. Intermittent monitoring over a 5-week period following the injection indicated detectable seismicity occurring with activity levels varying in… more
Date: February 6, 1990
Creator: Rutledge, J. T. & Albright, J. N.
open access

Biological Conversion of Synthesis Gas. [Chlorobium Thiosulfatophilum, Chlorobium Phaeobacteroides, and Rhodospirillum Rubrum]

Description: The anaerobic bacterium Rhodospirillum rubrum has been chosen for catalysis of the biological water gas shift reaction. Two bacteria, Chlorobium thiosulfatophilum and Chlorobium phaeobacteroides, are being evaluated as candidates for H{sub 2}S conversion to elemental sulfur. Since these latter two organisms both grow and convert H{sub 2}S in batch culture using standard basal medium, the choice of a suitable bacterium must be made in consideration of specific growth and uptake rates. Produced e… more
Date: January 6, 1992
open access

Full-Scale Demonstration Low-NO sub x Cell trademark Burner retrofit

Description: The Low-NO{sub x} Cell{trademark} Burner operates on the principle of staged combustion. The lower burner of each two-nozzle cell is modified to accommodate all the fuel input previously handled by two nozzles. Secondary air, less than theoretically required for complete combustion, is introduced to the lower burner. The remainder of secondary air is directed to the upper port'' of each cell to complete the combustion process. B W/EPRI have thoroughly tested the LNCB{trademark} at two pilot sca… more
Date: April 6, 1992
open access

Cryostabilization of high-temperature superconducting magnets with subcooled flow in microchannels

Description: Subcooled flow of liquid nitrogen in microchannels is proposed as a means to enhance the stability of a superconducting magnet. Analysis shows high current density or a low stabilizer fraction is obtainable in a cryostable magnet. Increase in stability (using the Stekley criterion) is directly related to coolant velocity and coolant channel aspect ratio, however, there is a corresponding increase in pressure drop of the system. Another constraint is the coolant temperature rise, which is found … more
Date: July 6, 1992
Creator: Cha, Y. S.; Hull, J. R. & Choi, U. S.
open access

Measured leak rates of the temporary seals in DWPF canistered waste forms after three years of on site storage

Description: In the summer of 1990 a study was carried out to determine the-internal pressure, relative humidity, and chemical composition of the gas within the free volume of four canistered waste forms produced at TNX in May of 1988. Three of these canistered waste forms were sealed only by temporary seals and subsequently stored in the TNX boneyard' with no protection. The fourth canister was sealed by upset resistance welding. All three canisters with temporary seals were decontaminated by aqueous frit … more
Date: April 6, 1992
Creator: Harbour, J. R. & Miller, T. J.
open access

Steam gasification of carbon: Catalyst properties, March 15, 1992--June 14, 1992

Description: This research uses several techniques to measure the concentration of catalyst sites and determine their stoichiometry for the catalyzed gasification of carbon. Both alkali and alkaline earth oxides are effective catalysts for accelerating the gasification rate of coal chars, but only a fraction of the catalyst appears to be in a form that is effective for gasification, and the composition of that catalyst is not established. Transient techniques, with {sup 13}C labeling, are being used to stud… more
Date: July 6, 1992
Creator: Falconer, J. L.
open access

Fusion, magnetic confinement

Description: An overview is presented of the principles of magnetic confinement of plasmas for the purpose of achieving controlled fusion conditions. Sec. 1 discusses the different nuclear fusion reactions which can be exploited in prospective fusion reactors and explains why special technologies need to be developed for the supply of tritium or {sup 3}He, the probable fuels. In Sec. 2 the Lawson condition, a criterion that is a measure of the quality of confinement relative to achieving fusion conditions, … more
Date: August 6, 1992
Creator: Berk, H. L.
open access

Toxicity testing results on increased supernate treatment rate of 3700 gallons/batch

Description: In July, 1991, Reactor Materials increased the supernate treatment concentration in the M-Area Dilute Effluent Treatment Facility from 2700 gallons of supernate per 36000 gallon dilute wastewater batch to 3700 gallons/batch. This report summarizes the toxicity testing on the effluents of the increased treatment rate.(JL)
Date: July 6, 1992
Creator: Pickett, J. B.; Martin, H. L. & Diener, G. A.
open access

High-resolution spectroscopic diagnostics of very high-temperature plasmas in the hard x-ray regime

Description: Motivated by the need for establishing a reliable database useful for the application of x-ray spectroscopic tools for the diagnostic of very high temperature plasmas, high-resolution crystal spectrometer measurements have been performed investigating the characteristic K-shell radiation of highly charged krypton and xenon. The measurements, which have been performed at the Electron-Beam-Ion-Trap (EBIT) facility of the Lawrence Livermore National Laboratory, include the investigation of the n =… more
Date: December 6, 1999
Creator: Widmann, K
open access

Criticality assessment of LLRWDF closure

Description: During the operation of the Low Level Radioactive Waste Disposal Facility (LLRWDF), large amounts (greater than 100 kg) of enriched uranium (EU) were buried. This EU came primarily from the closing and decontamination of the Naval Fuels Facility in the time period from 1987--1989. Waste Management Operations (WMO) procedures were used to keep the EU boxes separated to prevent possible criticality during normal operation. Closure of the LLRWDF is currently being planned, and waste stabilization … more
Date: October 6, 1992
Creator: Sarrack, A. G.; Weber, J. H. & Woody, N. D.
open access

Toxicity testing results on increased supernate treatment rate of 3700 gallons/batch. Revision 1

Description: In July, 1991, Reactor Materials increased the supernate treatment concentration in the M-Area Dilute Effluent Treatment Facility from 2700 gallons of supernate per 36000 gallon dilute wastewater batch to 3700 gallons/batch. This report summarizes the toxicity testing on the effluents of the increased treatment rate.(JL)
Date: July 6, 1992
Creator: Pickett, J. B.; Martin, H. L. & Diener, G. A.
open access

Acceptance test report for 241-AW process air system

Description: The acceptance test procedure (ATP) for the compressed air system at building 241-AW-273 was completed on March 11, 1993. The system was upgraded to provide a reliable source of compressed air to the tank farm. The upgrade included the demolition of the existing air compressor and associated piping, as well as the installation of a new air compressor with a closed loop cooling system. A compressed air cross-tie was added to allow the process air compressor to function as a back-up to the existi… more
Date: October 6, 1994
Creator: Kostelnik, A. J.
open access

Tank characterization report for double-shell Tank 241-AP-107

Description: The purpose of this tank characterization report is to describe and characterize the waste in Double-Shell Tank 241-AP-107 based on information gathered from various sources. This report summarizes the available information regarding the waste in Tank 241-AP-107, and arranges it in a useful format for making management and technical decisions concerning this particular waste tank. In addition, conclusion and recommendations based on safety and further characterization needs are given. Specific … more
Date: September 6, 1994
Creator: DeLorenzo, D. S. & Simpson, B. C.
open access

Tokamak Physics Experiment poloidal field design

Description: The Tokamak Physics Experiment (TPX) will have a poloidal field system capable of full inductive operation poloidal for approximately a 20-s flattop and, with superconducting toroidal and poloidal field coils and non-inductive current drive, it will be capable of true steady-state operation. The poloidal field design is based on the ideal MHD equilibrium model as implemented in the TEQ code developed at LLNL. The PF coils are arranged in an up-down symmetric configuration, external to the TF co… more
Date: October 6, 1993
Creator: Bulmer, R. H.
open access

Models for close-in atmospheric dispersion, explosive releases, and particle deposition

Description: Relatively simple models are presented to simulate close-in atmospheric dispersion, explosive releases, and particle deposition. Close-in generally refers to distances less than 50 m downwind from the source. These models assume simple gas dispersion (no chemical reactions, neutral buoyancy) and that particles behave as a gas expect they can be removed from the plume by a simple, deposition-velocity mechanism. These models have been combined into a QuickBASIC program (INEXPLC.BAS) and its PC ex… more
Date: October 6, 1993
Creator: Bloom, S. G.
open access

Factors fragmenting the Russian Federation

Description: This paper examines the factors that threaten the future of the Russian Federation (RF). The observations are based on a study that focused on eight republics: Mordova, Udmurtia, Tatarstan, Mari El, Bashkortostan, Kabardino-Balkaria, Buryatia, and Altay Republic. These republics were selected for their geographic and economic significance to the RF. Tatarstan, Bashkortostan, Udmurtia, and Mari El are located on important supply routes, such as the Volga River and the trans-Siberian railroad. So… more
Date: October 6, 1993
Creator: Brown, E.
open access

[Multifractal Cloud Properties Data Assessment]

Description: Our group has been very active over the last year, analyzing a number of data sets to characterize multifractal cloud properties and assess the effects of clouds on surface radiation properties (spectral and broadband). The data sets analyzed include: AVHRR observations of clouds over the ocean, SPOT observations of clouds over the ocean, SSM/I observations of clouds over the ocean, pyranometer data with all-sky photographs, pyrgeometer data all-sky photographs, and spectral surface irradiance … more
Date: May 6, 1992
Creator: Gautier, C.; Ricchiazzi, P.; Peterson, P.; Lavallee, D.; Frouin, R.; Lubin, D. et al.
open access

Precision surface machining

Description: Precision finishing apparatus utilizing line contact polishing to produce optical quality parts. A rotatable cylinder is horizontally disposed above a workpiece which is mounted on a rotatable, and horizontally and vertically adjustable chuck. Predetermined surfaces can be cut into the surface of the cylinder to produce figures of revolution, such as aspheres,, when the workpiece is being rotated.
Date: March 6, 1991
Creator: Lazazzera, Vito J. & Schmell, Rodney A.
open access

Tank 241-C-103 tank characterization plan

Description: The data quality objective (DQO) process was chosen as a tool to be used to identify the sampling analytical needs for the resolution of safety issues. A Tank Characterization Plant (TCP) will be developed for each double shell tank (DST) and single-shell tank (SST) using the DQO process. There are four Watch list tank classifications (ferrocyanide, organic salts, hydrogen/flammable gas, and high heat load). These classifications cover the six safety issues related to public and worker health t… more
Date: October 6, 1994
Creator: Schreiber, R. D.
open access

Maximal CP Violation via Higgs-Boson Exchange

Description: The unitarity of the mixing matrix of the charged Higgs bosons, and the orthogonality of the mixing matrix of the neutral Higgs bosons, are used to derive upper bounds on the values of general CP-violating expressions. The bounds are independent of the total number of Higgs fields in any specific model. They allow is to relax the usual assumption of only one Higgs boson being light. It is natural that the CP violation in the exchange of neutral Higgs bosons between bottom quarks be particularly… more
Date: March 6, 1992
Creator: Lavoura, L.
open access

Hanford Site waste tank farm facilities design reconstitution program plan

Description: Throughout the commercial nuclear industry the lack of design reconstitution programs prior to the mid 1980`s has resulted in inadequate documentation to support operating facilities configuration changes or safety evaluations. As a result, many utilities have completed or have ongoing design reconstitution programs and have discovered that without sufficient pre-planning their program can be potentially very expensive and may result in end-products inconsistent with the facility needs or expec… more
Date: September 6, 1994
Creator: Vollert, F. R.
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