Occupational dose reduction at Department of Energy contractor facilities: Bibliography of selected readings in radiation protection and ALARA (open access)

Occupational dose reduction at Department of Energy contractor facilities: Bibliography of selected readings in radiation protection and ALARA

This bibliography contains abstracts relating to various aspects of ALARA program implementation and dose reduction activities, with a focus on DOE facilities. Abstracts included in this bibliography were selected from proceedings of technical meetings, journals, research reports, searches of the DOE Energy, Science and Technology Database (in general, the citation and abstract information is presented as obtained from this database), and reprints of published articles provided by the authors. Facility types and activities covered in the scope of this report include: radioactive waste, uranium enrichment, fuel fabrication, spent fuel storage and reprocessing, facility decommissioning, hot laboratories, tritium production, research, test and production reactors, weapons fabrication and testing, fusion, uranium and plutonium processing, radiography, and aocelerators. Information on improved shielding design, decontamination, containments, robotics, source prevention and control, job planning, improved operational and design techniques, as well as on other topics, has been included. In addition, DOE/EH reports not included in previous volumes of the bibliography are in this volume (abstracts 611 to 684). This volume (Volume 5 of the series) contains 217 abstracts. An author index and a subject index are provided to facilitate use. Both indices contain the abstract numbers from previous volumes, as well as the current volume. …
Date: December 1, 1993
Creator: Dionne, B. J.; Sullivan, S. G. & Baum, J. W.
Object Type: Report
System: The UNT Digital Library
Localized or Systemic {italic In Vivo} Heat-Inactivation of Human Immunodeficiency Virus (HIV): A Mathematical Analysis (open access)

Localized or Systemic {italic In Vivo} Heat-Inactivation of Human Immunodeficiency Virus (HIV): A Mathematical Analysis

Temperatures as low as 42 C, maintained for a little as 25 minutes, inactivate {approx}25% of HIV. Furthermore, human immunodeficiency virus (HIV)-infected T-cells are more sensitive to heat than healthy lymphocytes and susceptibility increases when the cells are pre-sensitized by exposure to tumor necrosis factor. Thus, induction of a whole-body hyperthermia, or hyperthermia specifically limited to tissues having a high viral load, are potential antiviral therapies for acquired immunodeficiency disease (AIDS). Accordingly, we incorporated therapeutic hyperthermia into an existing mathematical model which evaluates the interaction between HIV and CD4{sup +} T cells. Given the assumptions and limitations of this model, the results indicate that a daily therapy, reducing the population of actively infected cells by 40% or infectious virus by 50%, would effectively reverse the depletion of T cells. In contrast, a daily reduction of 20% of either actively infected cells or infectious virus would have a marginal effect. However, reduction by 20% of both actively infected cells and infectious virus could restore T cell numbers, assuming that permanent damage had not been inflicted on the thymus. Whole-body hyperthermia seems unlikely to be clinically useful, unless it can be induced non-invasively without general anesthesia. In contrast, heating directed specifically to …
Date: December 15, 1993
Creator: Pennypacker, Carl R.; Perelson, A.S.; Nys, N.; Nelson, G. & Sessler, D.I.
Object Type: Article
System: The UNT Digital Library
Kootenai River White Sturgeon Studies, Annual Report FY 1993. (open access)

Kootenai River White Sturgeon Studies, Annual Report FY 1993.

This report evaluates natural spawning of white sturgeon in the Kootenai River before, during and after the 1993 augmented discharge period. To determine how altering the operation of Libby Dam may improve conditions for natural spawning of white sturgeon in the Kootenai River, discharge from Libby Dam (with no power peaking or load following) was increased to produce 20 kcfs ([plus minus] 2 kcfs) discharge at Bonners Ferry, Idaho, for a 14 day period June 2--16. Objectives of this research were to determine if white sturgeon spawned in the Kootenai River during 1993; and collect baseline biological data including timing, location, and habitat requirements of white sturgeon spawning in the Kootenai River in order to formulate and implement future flow regimes as effective recovery measures for white sturgeon. While sampling is not expected to collect a majority of white sturgeon eggs or larvae produced in a river, the fact that over 41,000 hours of sampling (combined gear) collected only 3 white sturgeon eggs and no larvae suggests that spawning conditions during 1993 were inadequate to benefit this population.
Date: December 1, 1993
Creator: Anders, Paul J. & Siple, John T.
Object Type: Report
System: The UNT Digital Library
Strongly coupled ionic mixtures and the H/He EOS (open access)

Strongly coupled ionic mixtures and the H/He EOS

This paper summarizes recent work on the strongly coupled OCP and Binary Ionic Mixture equation of state and other thermodynamic quantities in white dwarf interior conditions for both fluid and solid phases with the assumption of a uniform background. Conditions for phase separation of different elements in fluid or solid phases is strongly dependent on deviations from the linear mixing rule which gives the equation of state as an additive function of the OCP equation of state. These deviations turn out to be small (a few parts in 10{sup 5}) and always positive including the case where the fraction of the higher Z component approaches 0. Also the equation of state of strongly coupled light elements (H and He particularly) obtained from simulations with a linear response description of the electrons is given for conditions appropriate to brown dwarf star interiors. Recent Livermore work on a band structure calculation of the enthalpy of H and He mixtures under jovian conditions is discussed. This work leads to a prediction of a high temperature (15,000 K) for miscibility of He in ionized H at 10 Mb.
Date: December 2, 1993
Creator: DeWitt, H. E.
Object Type: Article
System: The UNT Digital Library
Neutron scattering and absorption properties (open access)

Neutron scattering and absorption properties

The Table in this report presents an evaluated set of values for the experimental quantities, which characterize the properties for scattering and absorption of neutrons. The neutron cross section is given for room temperature neutrons, 20.43{degree}C, corresponds to a thermal neutron energy of 0.0253 electron volts (eV) or a neutron velocity of 2200 meters/second. The neutron resonance integral is defined over the energy range from 0.5 eV to 0.1 {times} 10{sup 6} eV, or 0.1 MeV. A list of the major references used is given below. The literature cutoff data is October 1993. Uncertainties are given in parentheses. Parentheses with two or more numbers indicate values to the excited states(s) and to the ground state of the product nucleus.
Date: December 1, 1993
Creator: Holden, N. E.
Object Type: Report
System: The UNT Digital Library
Rf modeling and design of a folded waveguide launcher for the Alcator C-Mod tokamak (open access)

Rf modeling and design of a folded waveguide launcher for the Alcator C-Mod tokamak

The folded waveguide (FWG) launcher is being investigated as an improved antenna configuration for plasma heating in the ion cyclotron range of frequencies (ICRF). A development FWG launcher was successfully tested at Oak Ridge National Laboratory (ORNL) with a low-density plasma load and found to have significantly greater power density capability than current strap-type antennas operating in similar plasmas. To further test the concept on a high density tokamak plasma, a collaboration has been set up between ORNL and Massachusetts Institute of Technology (MIT) to develop and test an 80-MHz, 2-MW FWG on the Alcator C-Mod tokamak at MIT. The radio frequency (rf) electromagnetic modeling techniques and laboratory measurements used in the design of this antenna are described in this paper. A companion paper describes the mechanical design of the FWG.
Date: December 1, 1993
Creator: Bigelow, T. S.; Fogelman, C. F.; Baity, F. W.; Carter, M. D.; Hoffman, D. J.; Ryan, P. M. et al.
Object Type: Article
System: The UNT Digital Library
Phase-sensitive flow cytometry: New technology for analyzing biochemical, functional, and structural features in fluorochrome- labeled cells/particles (open access)

Phase-sensitive flow cytometry: New technology for analyzing biochemical, functional, and structural features in fluorochrome- labeled cells/particles

Flow cytometry (FCM) instruments rapidly measure biochemical, functional, and cytological properties of individual cells and macromolecular components, e.g., chromosomes, for clinical diagnostic medicine and biomedical and envirorunental research applications. These measurements are based on labeling cells with multiple fluorochromes for correlated analysis of macromolecules, such as DNA RNA, protein, and cell-surface receptors. This report describes the development of a phase-sensitive flow cytometer that provides unique capabilities for making laser-excited, phase-resolved measurements on fluorochrome-labelled cells and particles.
Date: December 1, 1993
Creator: Steinkamp, J. A.
Object Type: Article
System: The UNT Digital Library
An April 1991 outburst from 4U0115+63 observed by BATSE (open access)

An April 1991 outburst from 4U0115+63 observed by BATSE

4U0115+63 is a recurrent transient X-ray pulsar in a moderately eccentric orbit with a Be star companion, V635 Cas. Many outbursts from this system have been reported over the past twenty years; yet despite the apparent relation between optical outbursts from the companion star and subsequent X-ray transient events, the physical mechanism for the mass transfer in the system remains unclear. In this paper, the authors present the preliminary results of analysis of observations made using BATSE during the 1991 April outburst from this system. This outburst does not fit the pattern of three year recurrence intervals previously suggested by Whitlock, Roussel-Dupre and Priedhorsky (1989). The orbital elements of the system have been updated and do not support the claim of Tamura et al., (1992) that apsidal motion was detected in this system based on the 1990 Ginga outburst.
Date: December 1, 1993
Creator: Cominsky, L.; Roberts, M. & Finger, M. H.
Object Type: Report
System: The UNT Digital Library
TFTR Experimental Data Analysis Collaboration. Annual progress report, November 15, 1992--November 14, 1993 (open access)

TFTR Experimental Data Analysis Collaboration. Annual progress report, November 15, 1992--November 14, 1993

The research performed under the second year of this three-year grant has concentrated on a few key TFTR experimental data analysis issues: MHD mode identification and effects on supershots; identification of new MHD modes; MHD mode theory-experiment comparisons; local electron heat transport inferred from impurity-induced cool pulses; and some other topics. Progress in these areas and activities undertaken in conjunction with this grant are summarized briefly in this report.
Date: December 1, 1993
Creator: Callen, J. D.
Object Type: Report
System: The UNT Digital Library
Heat Source Technology Programs. Quarterly Progress Report, April--June 1993 (open access)

Heat Source Technology Programs. Quarterly Progress Report, April--June 1993

This quarterly report describes activities performed in support of Cassini fueled-clad production and studies related to the use of {sup 238}PuO{sub 2} in radioisotope power systems carried out for the Office of Special Applications of the US Department of Energy (DOE) by Los Alamos National Laboratory (LANL). Most of the activities described are ongoing; the results and conclusions described may change as the work progresses.
Date: December 1, 1993
Creator: George, T. G.
Object Type: Report
System: The UNT Digital Library
Logistics for the implementation of lead-free solders on electronic assemblies (open access)

Logistics for the implementation of lead-free solders on electronic assemblies

The prospects of legislative and regulatory action aimed at taxing, restricting or banning lead-bearing materials from manufactured products has prompted the electronics community to examine the implementation of lead-free solders to replace currently used lead-containing alloys in the manufacture of electronic devices and assemblies. The logistics for changing the well established ``tin-lead solder technology`` require not only the selection of new compositions but also the qualification of different surface finishes and manufacturing processes. The meniscometer/wetting balance technique was used to evaluate the wettability of several candidate lead-free solders as well as to establish windows on processing parameters so as to facilitate prototype manufacturing. Electroplated and electroless 100Sn coatings, as well as organic preservatives, were also examined as potential alternative finishes for device leads and terminations as well as circuit board conductor surfaces to replace traditional tin-lead layers. Sandia National Laboratories and AT&T have implemented a program to qualify the manufacturing feasibility of surface mount prototype circuit boards using several commercial lead-free solders by infrared reflow technology.
Date: December 31, 1993
Creator: Vianco, P. T. & Artaki, I.
Object Type: Article
System: The UNT Digital Library
Laboratory Directed Research & Development Program. Annual report to the Department of Energy, Revised December 1993 (open access)

Laboratory Directed Research & Development Program. Annual report to the Department of Energy, Revised December 1993

At Brookhaven National Laboratory the Laboratory Directed Research and Development (LDRD) Program is a discretionary research and development tool critical in maintaining the scientific excellence and vitality of the laboratory. It is also a means to stimulate the scientific community, fostering new science and technology ideas, which is the major factor in achieving and maintaining staff excellence, and a means to address national needs, within the overall mission of the Department of Energy and Brookhaven National Laboratory. This report summarizes research which was funded by this program during fiscal year 1993. The research fell in a number of broad technical and scientific categories: new directions for energy technologies; global change; radiation therapies and imaging; genetic studies; new directions for the development and utilization of BNL facilities; miscellaneous projects. Two million dollars in funding supported 28 projects which were spread throughout all BNL scientific departments.
Date: December 1, 1993
Creator: Ogeka, G. J. & Romano, A. J.
Object Type: Report
System: The UNT Digital Library
Performance of CVR coatings for PBR fuels (open access)

Performance of CVR coatings for PBR fuels

As part of the component development process for the particle bed reactor (PBR), it is necessary to develop coatings for fuel particles which will be time and temperature stable. These coatings must not only protect the particle from attack by the hydrogen coolant, but must also help to maintain the bed in a coolable geometry and mitigate against fission product release. In order to develop these advanced coatings, a process to produce chemical vapor reaction (CVR) coatings on fuel for PBRs has been developed. The initial screening tests for these coatings consisted of testing in flowing hot hydrogen at one atmosphere. Surrogate fuel particles consisting of pyrolytic graphite coated graphite particles have been heated in flowing hydrogen at constant temperature. The carbon loss from these particles was measured as a function of time. Exposure temperatures ranging from 2,500 to 3,000 K were used and samples were exposed for up to 14 minutes in a cyclical fashion, cooling to room temperature between exposures. The rate of weight loss measured as a function of time is compared to that from other tests of coated materials under similar conditions. Microscopic examination of the coatings before and after exposure was also conducted and these …
Date: December 31, 1993
Creator: Adams, J. W.; Barletta, R. E.; Svandrlik, J. & Vanier, P. E.
Object Type: Report
System: The UNT Digital Library
Crystalline-silicon solar cell development sponsored by the US Department of Energy (open access)

Crystalline-silicon solar cell development sponsored by the US Department of Energy

None
Date: December 1, 1993
Creator: Basore, P. A.
Object Type: Report
System: The UNT Digital Library
Measurement of the W mass in the D0 detector (open access)

Measurement of the W mass in the D0 detector

We report the results of a preliminary analysis of the W {r_arrow} e{nu} decays observed in 14 pb{sup {minus}1} of data taken during the Fermilab Tevatron Run l(a). After normalizing the mass scale to the Z mass measured at LEP, we find a value for the W mass of 79.86 {plus_minus} 0.16(stat) {plus_minus} 0.20(syst) {plus_minus} 0.31(scale) GeV. The method for extracting the W mass and the details of the error analysis are presented and discusses.
Date: December 1, 1993
Creator: Zhu, Qiang
Object Type: Article
System: The UNT Digital Library
Nuclear disarmament verification (open access)

Nuclear disarmament verification

Arms control treaties, unilateral actions, and cooperative activities -- reflecting the defusing of East-West tensions -- are causing nuclear weapons to be disarmed and dismantled worldwide. In order to provide for future reductions and to build confidence in the permanency of this disarmament, verification procedures and technologies would play an important role. This paper outlines arms-control objectives, treaty organization, and actions that could be undertaken. For the purposes of this Workshop on Verification, nuclear disarmament has been divided into five topical subareas: Converting nuclear-weapons production complexes, Eliminating and monitoring nuclear-weapons delivery systems, Disabling and destroying nuclear warheads, Demilitarizing or non-military utilization of special nuclear materials, and Inhibiting nuclear arms in non-nuclear-weapons states. This paper concludes with an overview of potential methods for verification.
Date: December 31, 1993
Creator: DeVolpi, A.
Object Type: Article
System: The UNT Digital Library
Thermal treatment of high explosives at Mason & Hanger/Pantex Plant (open access)

Thermal treatment of high explosives at Mason & Hanger/Pantex Plant

The Pantex plant presently processes about 45,000 kg (100,000 lb) of high explosives annually by outdoor burning. About half of the explosives are weapon components weighing over 5 kg (10 lb) which come directly out of nuclear weapons being removed from the stockpile. The other half is generated from various support processes, special tests, etc. Burning serves the three-fold purpose of demilitarizing, removing all classified characteristics, and eliminating the severe hazard posed by the explosives themselves. Transporting such large quantities of classified high explosives for such processing at another site would be prohibitive. Computerized atmospheric modelling of the burning process was conducted during the past year. The results were somewhat surprising in that oxides of nitrogen and carbon monoxide, two ``criteria pollutants,`` were not of great concern even though it is known that high explosives contain significant amounts of nitrogen and they generate measureable amounts of carbon monoxide when they are burned. Rather, it was determined that hydrogen fluoride gas is of much greater concern, and stringent controls on the burning operation have been implemented to address this concern. Although the amount of fluorine-containing explosive must be restricted, other kinds of air emissions are not a great concern. This favorable …
Date: December 31, 1993
Creator: Patterson, W. E. & Phelan, P. F.
Object Type: Article
System: The UNT Digital Library
WAG 2 remedial investigation and site investigation site-specific work plan/health and safety checklist for the soil and sediment task. Environmental Restoration Program (open access)

WAG 2 remedial investigation and site investigation site-specific work plan/health and safety checklist for the soil and sediment task. Environmental Restoration Program

This document is a site-specific work plan/health and safety checklist (WP/HSC) for a task of the Waste Area Grouping 2 Remedial Investigation and Site Investigation (WAG 2 RI&SI). Title 29 CFR Part 1910.120 requires that a health and safety program plan that includes site- and task-specific information be completed to ensure conformance with health- and safety-related requirements. To meet this requirement, the health and safety program plan for each WAG 2 RI&SI field task must include (1) the general health and safety program plan for all WAG 2 RI&SI field activities and (2) a WP/HSC for that particular field task. These two components, along with all applicable referenced procedures, must be kept together at the work site and distributed to field personnel as required. The general health and safety program plan is the Health and Safety Plan for the Remedial Investigation and Site Investigation of Waste Area Grouping 2 at the Oak Ridge National Laboratory, Oak Ridge, Tennessee (ORNL/ER-169). The WP/HSCs are being issued as supplements to ORNL/ER-169.
Date: December 1, 1993
Creator: Holt, V. L. & Burgoa, B. B.
Object Type: Report
System: The UNT Digital Library
A comparison of the evolution of cold and hot deformation microstructures and textures in fcc metals (open access)

A comparison of the evolution of cold and hot deformation microstructures and textures in fcc metals

Microstructures and textures which develop during cold deformation are compared to those which develop during hot deformation. This comparison is made using the evolutionary framework of grain subdivision and the formation of low energy dislocation structures. During deformation grains are subdivided into differently deforming regions separated by geometrically necessary dislocation boundaries. These boundaries include dense dislocation walls, microbands, lamellar boundaries and subgrains. Grain subdivision occurs as a result of the requirement for strain accommodation balanced by energy considerations. This grain subdivision weakens the texture and increases the texture scatter. The tendency for grain subdivision decreases with increasing temperature of deformation with implications for the microstructural evolution and the texture formation.
Date: December 31, 1993
Creator: Hughes, D. A. & Hansen, N.
Object Type: Article
System: The UNT Digital Library
Solar neutrino experiments: An update (open access)

Solar neutrino experiments: An update

The situation in solar neutrino physics has changed drastically in the past few years, so that now there are four neutrino experiments in operation, using different methods to look at different regions of the solar neutrino energy spectrum. These experiments are the radiochemical {sup 37}Cl Homestake detector, the realtime Kamiokande detector, and the different forms of radiochemical {sup 71}Ga detectors used in the GALLEX and SAGE projects. It is noteworthy that all of these experiments report a deficit of observed neutrinos relative to the predictions of standard solar models (although in the case of the gallium detectors, the statistical errors are still relatively large). This paper reviews the basic principles of operation of these neutrino detectors, reports their latest results and discusses some theoretical interpretations. The progress of three realtime neutrino detectors that are currently under construction, SuperKamiok, SNO and Borexino, is also discussed.
Date: December 31, 1993
Creator: Hahn, R. L.
Object Type: Article
System: The UNT Digital Library
A 12-channel VMEbus-based pulse-height analysis module (open access)

A 12-channel VMEbus-based pulse-height analysis module

The author describes a 12-channel VMEbus-based pulse-height analysis board that was designed for use in a high-rate, multidetector, gamma-ray imaging system. This module was designed to minimize dead-time losses and to allow all key parameters to be software controlled. Gamma-ray detectors are connected directly to this module, eliminating the need for additional electronics.
Date: December 1, 1993
Creator: Arnone, G. J.
Object Type: Article
System: The UNT Digital Library
Studies in physico-chemical hydrodynamics of extended systems. Annual progress report, November 1, 1993--October 31, 1994 (open access)

Studies in physico-chemical hydrodynamics of extended systems. Annual progress report, November 1, 1993--October 31, 1994

The object of the proposed research program is a unified theoretical approach to the description of a variety of physico-chemical hydrodynamic systems characterized by a significant disparity between the spatial scales involved. By appropriately performed averaging over short scales, one may considerably simplify the original problem, sometimes even lowering its effective dimensionality, and thereby making the latter quite tractable either analytically or numerically. Specifically, the author plans to study: (1) the hydrodynamic aspects of flameholding and flammability in premixed gas flames, (2) large-scale structures in Rayleigh-Benard-Marangoni convection in nonreactive and reactive liquid layers, (3) nonlinear dynamics of interfacial instabilities dominated by viscosity effects, and (4) negative viscosity effects and formation of large-scale structures in liquid layers driven at small scales.
Date: December 31, 1993
Creator: Sivashinsky, G. I.
Object Type: Report
System: The UNT Digital Library
Case studies of corrosion of mixed waste and transuranic waste drums (open access)

Case studies of corrosion of mixed waste and transuranic waste drums

This paper presents three case studies of corrosion of waste drums at the Los Alamos National Laboratory (LANL). Corrosion was not anticipated by the waste generators, but occurred because of subtle chemical or physical mechanisms. In one case, drums of a cemented transuranic (TRU) sludge experienced general and pitting corrosion. In the second instance, a chemical from a commercial paint stripper migrated from its primary containment drums to chemically attack overpack drums made of mild carbon steel. In the third case, drums of mixed low level waste (MLLW) soil corroded drum packaging even though the waste appeared to be dry when it was placed in the drums. These case studies are jointly discussed as ``lessons learned`` to enhance awareness of subtle mechanisms that can contribute to the corrosion of radioactive waste drums during interim storage.
Date: December 1, 1993
Creator: Kosiewicz, S. T.
Object Type: Article
System: The UNT Digital Library
Consolidated incineration facility technical support (open access)

Consolidated incineration facility technical support

In 1996, the Savannah River Site plans to begin operation of the Consolidated Incineration Facility (CIF) to treat solid and liquid RCRA hazardous and mixed wastes. The Savannah River Technology Center (SRTC) leads an extensive technical support program designed to obtain incinerator and air pollution control equipment performance data to support facility start-up and operation. Key components of this technical support program include recently completed waste burn tests at both EPA`s Incineration Research Facility and at Energy and Environmental Research Corporation`s Solid Waste Incineration Test Facility. The main objectives for these tests were determining the fate of heavy metals, measuring organics destruction and removal efficiencies, and quantifying incinerator offgas particulate loading and size distribution as a function of waste feed characteristics and incineration conditions. In addition to these waste burning tests, the SRTC has recently completed installations of the Offgas Components Test Facility (OCTF), a 1/10 scale CIF offgas system pilot plant. This pilot facility will be used to demonstrate system operability and maintainability, evaluate and optimize equipment and instrument performance, and provide direct CIF start-up support. Technical support programs of this type are needed to resolve technical issues related with treatment and disposal of combustible hazardous, mixed, and low-level …
Date: December 31, 1993
Creator: Burns, D. & Looper, M. G.
Object Type: Article
System: The UNT Digital Library