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Intercomparison of Active and Passive Instruments for Radon and Radon Progeny in North America

Description: An intercomparison exercise for radon and radon progeny instruments and methods was held at the Environmental Measurements Laboratory (EML) from April 22--May 2, 1994. The exercise was conducted in the new EML radon test and calibration facility in which conditions of exposure are very well controlled. The detection systems of the intercompared instruments consisted of. (1) pulse ionization chambers, (2) electret ionization chambers, (3) scintillation detectors, (4) alpha particle spectrometers… more
Date: February 1, 1995
Creator: George, A. C.; Tu, Keng-Wu & Knutson, E. O.
Partner: UNT Libraries Government Documents Department
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Hydrology/Radionuclide Migration Program and related research activities; FY 1986 progress report, October 1, 1985--September 30, 1986

Description: This report presents the results of technical studies conducted under the Hydrology/Radionuclide Migration Program (HRMP) at the Nevada Test Site (NTS) for the period of October 1, 1985 through September 30, 1986. The HRMP was initiated in 1973 as the Radionuclide Migration Program to study and better understand the hydrologic systems of the NTS and potential movement and rates of movement of radionuclides and other contaminants injected into these systems by underground nuclear testing.
Date: February 1, 1992
Creator: Jones, M.A.
Partner: UNT Libraries Government Documents Department
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Groundwater flow code verification ``benchmarking`` activity (COVE-2A): Analysis of participants` work

Description: The Nuclear Waste Repository Technology Department at Sandia National Laboratories (SNL) is investigating the suitability of Yucca Mountain as a potential site for underground burial of nuclear wastes. One element of the investigations is to assess the potential long-term effects of groundwater flow on the integrity of a potential repository. A number of computer codes are being used to model groundwater flow through geologic media in which the potential repository would be located. These codes… more
Date: February 1, 1992
Creator: Dykhuizen, R. C. & Barnard, R. W.
Partner: UNT Libraries Government Documents Department
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Title list of documents made publicly available, December 1--31, 1993, Volume 15, No. 12

Description: The Title List of Documents Made Publicly Available is a monthly publication. It contains descriptions of the information received and generated by the U.S. Nuclear Regulatory Commission (NRC). This information includes (1) docketed material associated with civilian nuclear power plants and other uses of radioactive materials and (2) nondocketed material received and generated by NRC pertinent to its role as a regulatory agency. As used here, docketed does not refer to Court dockets; it refers … more
Date: February 1, 1994
Partner: UNT Libraries Government Documents Department
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Thermal calculations pertaining to a proposed Yucca Mountain nuclear waste repository

Description: In support to the Yucca Mountain Project waste package and repository design efforts, LLNL conducted heat-transfer modeling of the volcanic tuff in the repository. The analyses quantify: the thermal response of a finite size, uniformly loaded repository where each panel of emplacement drifts contains the same type of heat source the response given a realistic waste stream inventory to show the effect of inter-panel variations; and the intra-panel response for various realistic distributions of … more
Date: February 1, 1990
Creator: Johnson, G. L. & Montan, D. N.
Partner: UNT Libraries Government Documents Department
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Computational mechanics

Description: No Description Available.
Date: February 1, 1997
Creator: Goudreau, G. L., LLNL
Partner: UNT Libraries Government Documents Department
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Clean Slate 2 Revegetation and Monitoring Plan

Description: This document is a reclamation plan for short-term and long-term stabilization of land disturbed by activities associated with interim clean-up of radionuclide-contaminated surface soil at Clean Slate 2 located northwest of the Nevada Test Site on the Nellis Air Force Range. Surface soils at Clean Slate 2 were contaminated as a result of the detonation of a device containing plutonium and depleted uranium using chemical explosives. Excavation of contaminated soils at Clean Slate 2 will follow p… more
Date: February 1, 1998
Creator: Anderson, David
Partner: UNT Libraries Government Documents Department
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Suspended plutonium aerosols near a soil cleanup site on Johnston Atoll in 1992

Description: Plutonium aerosol monitoring was conducted for one month near the 1992 operation of a stationary sorting system used to {open_quotes}mine{close_quotes} contaminated soil on Johnston Atoll. Pairs of high volume cascade impactors and a high volume air sampler were located at each of three locations of the process stream: the {open_quotes}spoils pile{close_quote} that was the feedstock, the {open_quotes}plant area{close_quotes} near the-hot soil gate of the sorter, and the {open_quotes}clean pile{… more
Date: February 1994
Creator: Shinn, J. H.; Fry, C. F. & Johnson, J. S.
Partner: UNT Libraries Government Documents Department
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The Next Linear Collider Test Accelerator's RF Pulse Compression and Transmission Systems

Description: The overmoded rf transmission and pulsed power compression system for SLAC's Next Linear Collider (NLC) program requires a high degree of transmission efficiency and mode purity to be economically feasible. To this end, a number of new, high power components and systems have been developed at X-band, which transmit rf power in the low loss, circular TE01 mode with negligible mode conversion. In addition, a highly efficient SLED-II* pulse compressor has been developed and successfully tested at … more
Date: February 24, 1999
Creator: Tantawi, Sami
Partner: UNT Libraries Government Documents Department
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Advanced Mixed Waste Treatment Project melter system preliminary design technical review meeting

Description: The Idaho National Engineering Laboratory Advanced Mixed Waste Treatment Project sponsored a plasma are melter technical design review meeting to evaluate high-temperature melter system configurations for processing heterogeneous alpha-contaminated low-level radioactive waste (ALLW). Thermal processing experts representing Department of Energy contractors, the Environmental Protection Agency, and private sector companies participated in the review. The participants discussed issues and evaluate… more
Date: February 1, 1995
Creator: Eddy, T.L.; Raivo, B.D.; Soelberg, N.R. & Wiersholm, O.
Partner: UNT Libraries Government Documents Department
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Investigation of microscale electromechanical technologies for continuous monitoring. Final report

Description: Efforts are under way worldwide to integrate electronic and mechanical components on solid state devices to perform the functions of traditional sensors at the micro-scale. For example, chemical sensors have been envisioned that involve pumping air or liquid samples at small volumetric flow rates over long periods of time for continuous monitoring of environments. The mechanical components on these devices are fabricated into monolithic silicon or other solid state media. These types of devices… more
Date: February 10, 1995
Creator: Finucane, R.; Ruggiero, A. & Sheem, S.
Partner: UNT Libraries Government Documents Department
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Measurement of Small Electron Beam Spots

Description: Measurements of transverse beam size are tremendously important to the performance of e{sup +}e{sup {minus}} linear colliders. In this paper we review the traditional technologies used to make such measurements, such as profile monitors and wire scanners, and the limitations on same. We then introduce a new tool for electron beam size measurement: Compton-scattered laser light, which may be used as an unbreakable ''wire'' or in the form of an interferometer beam size monitor. We describe the us… more
Date: February 3, 1999
Creator: Tenenbaum, Peter G
Partner: UNT Libraries Government Documents Department
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New observations of infiltration through fractured alluvium in Yucca Flat, Nevada Test Site: A preliminary field investigation

Description: Regional tectonics coupled with the subsurface detonation of nuclear explosives has caused widespread fracturing of the alluvium of Yucca Flat. Fractures deeper than 30 meters have been observed in boreholes. Some of these fractures are large enough to capture significant amounts of runoff during storm events. Evidence of stream capture by fractures and observations of runoff flowing into open fractures give qualitative evidence of infiltration to depths greater than several meters and possibly… more
Date: February 1, 1994
Creator: Kao, C. S.; Smith, D. K. & McKinnis, W. B.
Partner: UNT Libraries Government Documents Department
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Influence of physiography and vegetation on small mammals at the Naval Petroleum Reserves, California

Description: Influence of physiography and vegetation on small mammal abundance and species Composition was investigated at Naval Petroleum Reserve No. 1 in California to assess prey abundance for Federally endangered San Joaquin kit foxes (Vulpes macrotis mutica) and to assess the distribution of two Federal candidate species, San Joaquin antelope squirrels (Ammospermophilus nelsoni) and short-nosed kangaroo rats (Dinodomys nitratoides brevinasus). The specific objectives of this investigation were to dete… more
Date: February 13, 1995
Creator: Cypher, B.L.
Partner: UNT Libraries Government Documents Department
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Gamma-ray identification of nuclear weapon materials

Description: There has been an accelerating national interest in countering nuclear smuggling. This has caused a corresponding expansion of interest in the use of gamma-ray spectrometers for checkpoint monitoring, nuclear search, and within networks of nuclear and collateral sensors. All of these are fieldable instruments--ranging from large, fixed portal monitors to hand-held and remote monitoring equipment. For operational reasons, detectors with widely varying energy resolution and detection efficiency w… more
Date: February 3, 1997
Creator: Gosnell, T. B., LLNL; Hall, J. M.; Jam, C. L.; Knapp, D. A.; Koenig, Z. M.; Luke, S. J. et al.
Partner: UNT Libraries Government Documents Department
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General safety basis development guidance for environmental restoration decontamination and decommissioning

Description: Safety analyses have the objective of contributing to two essential ingredients of a successful operation. The first is promoting the safety of the operation through worker involvement in information development (safety basis). The second is obtaining approval to conduct the operation (authorization). Typically these ingredients are assembled under separate programs covered by separate DOE requirements. DOE authorization relies on successful development of a document containing up to 21 topics … more
Date: February 1, 1994
Creator: Ellingson, D.R.; Kerr, N.; Bohlander, K.; Hansen, J. & Crowley, W.
Partner: UNT Libraries Government Documents Department
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Task 6.7.3 - Interfacial Mass Transport Effects in Composite Materials

Description: Advanced metal-matrix composites (MMCS) consisting of titanium-based alloys possess some unique mechanical, physical, and chemical characteristics that make them highly desirable for aircraft and gas turbine engines. Tailoring MMC properties is essential for advanced product design in materials processing. The main factors that affect materials processing and, further, the nature of a metal-ceramic interface, its structure, and morphological stability is liquid surface mass transport related to… more
Date: February 1, 1998
Creator: Nowok, Jan W.
Partner: UNT Libraries Government Documents Department
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Studies of Nonlinear QED in Collisions of 46.6 Electrons with Intense LaserPulses

Description: We report on measurements of quantum electrodynamic processes in an intense electromagnetic wave, where nonlinear effects (both multiphoton and vacuum polarization) are prominent. Nonlinear Compton scattering and electron-positron pair production have been observed in collisions of 46.6 GeV and 49.1 GeV electrons of the Final Focus Test Beam at SLAC with terawatt pulses of 1053 nm and 527 nm wavelengths from a Nd:glass laser. Peak laser intensities of approximately 0.5 x 10{sup 18} W/cm{sup 2} … more
Date: February 16, 1999
Creator: McDonald, Kirk T.
Partner: UNT Libraries Government Documents Department
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Endangered Species Program, Naval Petroleum Reserves in California. Annual report FY93

Description: The Naval Petroleum Reserves in California (NPRC) are operated by the US Department of Energy (DOE) and Chevron USA. Production Company (CPDN). Four federally-listed endangered animal species and one federally-threatened plant species are known to occur on NPRC: San Joaquin kit fox, blunt-nosed leopard lizard, giant kangaroo rat, Tipton kangaroo rat, and Hoover`s wooly-star. All five are protected under the Endangered Species Act of 1973, which declares that it is ``...the policy of Congress th… more
Date: February 1, 1995
Partner: UNT Libraries Government Documents Department
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Continued study of the effects of heat treatment and microstructure on electrocatalyst performance. Final report, July 29, 1991--December 20, 1991

Description: Platinum and platinum-chromium bulk electrodes were analyzed in 100 wt.% H{sub 3}PO{sub 4} at 200{degrees} C to evaluate the kinetics for the oxygen reduction reaction (ORR) in the phosphoric acid fuel cell (PAFC) operating environment. Dispersed platinum and platinum-chromium catalyst electrodes were operated potentiostatically under simulated PAFC operating conditions (0.7 V vs. RHE in 100 wt.% H{sub 3}PO{sub 4} at 200{degrees} C) using the submerged mode to evaluate the degradation mechanism… more
Date: February 1, 1992
Creator: Stoner, G.E.
Partner: UNT Libraries Government Documents Department
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Test of CPT Invariance in B Factories

Description: Feasibility of setting limits on CPT violating parameters for the case of both CP conjugate and semileptonic decays of neutral Bd mesons were examined. For the case of semileptonic final states of neutral Bd meson decays, bounds on CPT violating parameters at the level of few percent can be easily obtained. This sensitivity is better than the similar analysis using the CP conjugate final states of neutral Bd meson decays mainly due to the substantial increase on the statistics.
Date: February 2, 1999
Creator: Yang, Songhoon
Partner: UNT Libraries Government Documents Department
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Direct coal liquefaction baseline design and system analysis. Quarterly report, October 1992--December 1992

Description: The primary objective of the study is to develop a computer model for a base line direct coal liquefaction design based on two stage direct coupled catalytic reactors. This primary objective is to be accomplished by completing the following: (1) A base line design based on previous DOE/PETC results from Wilsonville pilot plant and other engineering evaluations; (2) A cost estimate and economic analysis; (3) A computer model incorporating the above two steps over a wide range of capacities and s… more
Date: February 1, 1993
Partner: UNT Libraries Government Documents Department
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Preprocessing of backprojection images in the McClellan Nuclear Radiation Center tomography system

Description: Neutron tomography is being investigated as a nondestructive technique for quantitative assessment of low atomic mass impurity concentration in metals. Neutrons maximize the sensitivity given their higher cross sections for low Z isotopes while tomography provides the three dimensional density information. The specific application is the detection of Hydrogen down to 200 ppm weight in aircraft engine compressor blades. A number of preprocessing corrections have been implemented for the backproj… more
Date: February 19, 1998
Creator: Gibbons, M. R., LLNL
Partner: UNT Libraries Government Documents Department
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Assessment of Smolt Condition for Travel Time Analysis, 1993-1994 Annual Report.

Description: The assessment of smolt condition for travel time analysis (ASCTTA) project provided information on the level of smoltification in Columbia River hatchery and wild salmonid stocks to the Fish Passage Center (FPC), for the primary purpose of in-river management of flows.
Date: February 1, 1999
Creator: Schrock, Robin M; Beeman, John W & VanderKooi, Scott P
Partner: UNT Libraries Government Documents Department
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