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Report on the remedial investigation of Bear Creek Valley at the Oak Ridge Y-12 Plant, Oak Ridge, Tennessee. Volume 5: Appendix F -- Baseline human health risk assessment report

Description: This Remedial Investigation (RI) Report characterizes the nature and extent of contamination, evaluates the fate and transport of contaminants, and assesses risk to human health and the environment resulting from waste disposal and other US Department of Energy (DOE) operations in Bear Creek Valley (BCV). BCV, which is located within the DOE Oak Ridge Reservation (ORR) encompasses multiple waste units containing hazardous and radioactive wastes arising from operations at the adjacent Oak Ridge … more
Date: September 1, 1996
Item Type: Refine your search to only Report
open access

Support services for ceramic fiber-ceramic matrix composites. Annual technical progress report

Description: Ceramic and advanced alloy corrosion in fossil energy systems is being investigated. During 1995-6, ash was collected for testing corrosion resistance of materials in air-blown fluidized-bed gasification systems. Descriptions of the activities are presented in this report, which is an extension of a technical paper on testing corrosion rates of ceramics in coal gasification systems. A section of this report covers factors affecting the composition of ash deposits.
Date: December 27, 1996
Creator: Hurley, J. P. & Nowok, J. W.
Item Type: Refine your search to only Report
open access

Strongly Correlated F-Electron Systems: A PES Study

Description: The term heavy fermions refers to materials (thus far only compounds with elements having an unfilled 4f or 5f shells) whose large specific heat {gamma}-values suggest that the conduction electrons at low temperatures have a very heavy effective mass. Magnetic susceptibility measurements, {chi}, generally yield a Curie-Weiss behavior at high temperatures with a well developed moment, which would be consistent with localized behavior of the f-electrons. Thus, the f-electrons appear to behave as … more
Date: December 31, 1998
Creator: Arko, A. J.; Joyce, J. J.; Sarrao, J.; Thompson, J. D.; Morales, L.; Fisk, Z. et al.
Item Type: Refine your search to only Article
open access

A collision avoidance system for workpiece protection

Description: This paper describes an application of Sandia`s non-contact capacitive sensing technology for collision avoidance during the manufacturing of rocket engine thrust chambers. The collision avoidance system consists of an octagon shaped collar with a capacitive proximity sensor mounted on each face. The sensors produced electric fields which extend several inches from the face of the collar and detect potential collisions between the robot and the workpiece. A signal conditioning system processes … more
Date: April 1, 1995
Creator: Schmitt, D.J.; Weber, T.M.; Novak, J.L. & Maslakowski, J.E.
Item Type: Refine your search to only Article
open access

Commissioning results of the next generation photoinjector

Description: The Next Generation Photoinjector (NGP) developed by the BNL SLAC / UCLA collaboration was installed at the Brookhaven National Laboratories Accelerator Test Facility (ATF). The commissioning results and performance of the photocathode injector are present. The Next Generation Photoinjector consists of the symmetrized BNL/SLAC/UCLA 1.6 cell S-band Photocathode RF gun and a single solenoidal magnet for transverse emittance compensation. The highest acceleration field achieved on the cathode is 1… more
Date: December 1, 1996
Creator: Palmer, D. T.; Miller, R. H.; Pellegrini, C.; Winick, H.; Wang, X. J.; Babzien, M. et al.
Item Type: Refine your search to only Article
open access

Offsite environmental monitoring report: Radiation monitoring around United States nuclear test areas, calendar year 1993

Description: This report describes the Offsite Radiation Safety Program conducted during 1993 by the Environmental Protection Agency`s (EPA`s) Environmental Monitoring Systems Laboratory - Las Vegas (EMSL-LV). This laboratory operates an environmental radiation monitoring program in the region surrounding the Nevada Test Site (NTS) and at former test sites in Alaska, Colorado, Mississippi, Nevada, and New Mexico. The surveillance program is designed to measure levels and trends of radioactivity, if present,… more
Date: June 1, 1996
Creator: Chaloud, D. J; Daigler, D. M. & Davis, M.G.
Item Type: Refine your search to only Report
open access

Advanced zinc phosphate conversion coatings. Final report, June 1996--December 1996

Description: A SERDP-sponsored program aims at developing environmentally benign zinc phosphate conversion coatings and their process technologies for the electrogalvanized steel (EGS). We succeeded in formulating an environmentally acceptable phosphate solution without Co- and Ni-related additives, and also in replacing a hexavalent Cr acid sealant applied over the zinc phosphate (Zh-Ph) layers with a water-based polysiloxane sealers. The specific advantages of the newly developed Zn-Ph coatings were as fo… more
Date: April 1997
Creator: Handsy, C. I. & Sugama, T.
Item Type: Refine your search to only Report
open access

Chemical detection using the airborne thermal infrared imaging spectrometer (TIRIS)

Description: A methodology is described for an airborne, downlooking, longwave infrared imaging spectrometer based technique for the detection and tracking of plumes of toxic gases. Plumes can be observed in emission or absorption, depending on the thermal contrast between the vapor and the background terrain. While the sensor is currently undergoing laboratory calibration and characterization, a radiative exchange phenomenology model has been developed to predict sensor response and to facilitate the senso… more
Date: April 1, 1997
Creator: Gat, N.; Subramanian, S.; Sheffield, M.; Erives, H. & Barhen, J.
Item Type: Refine your search to only Article
open access

DNFSB recommendation 94-1 Hanford site integrated stabilization management plan

Description: In May 1994, the Defense Nuclear Facilities Safety Board (DNFSB) issued DNFSB Recommendation 94-1 (Conway 1994), which identified concerns related to US Department of Energy (DOE) management of legacy fissile materials remaining from past defense production activities. The DNFSB expressed concern about the existing storage conditions for these materials and the slow pace at which the conditions were being remediated. The DNFSB also expressed its belief that additional delays in stabilizing thes… more
Date: May 7, 1997
Creator: McCormack, R. L.
Item Type: Refine your search to only Report
open access

Developing public awareness for climate change: Support from international research programs

Description: Developing regional and local public awareness and interest in global climate change has been mandated as an important step for increasing the ability for setting policy and managing the response to climate change. Research programs frequently have resources that could help reach regional or national goals for increasing the capacity for responding to climate change. To obtain these resources and target recipients appropriately, research investigators need clear statements of national and regio… more
Date: December 31, 1998
Creator: Barnes, F.J. & Clements, W.E.
Item Type: Refine your search to only Article
open access

Drill string gas data

Description: Data and supporting documentation were compiled and analyzed for 26 cases of gas grab samples taken during waste-tank core sampling activities between September 1, 1995 and December 31, 1997. These cases were tested against specific criteria to reduce uncertainties associated with in-tank sampling location and conditions. Of the 26 possible cases, 16 qualified as drill-string grab samples most likely to represent recently released waste gases. The data from these 16 ``confirmed`` cases were adj… more
Date: May 12, 1998
Creator: Siciliano, E. R.
Item Type: Refine your search to only Report
open access

Model documentation report: Transportation sector model of the National Energy Modeling System

Description: Over the past year, several modifications have been made to the NEMS Transportation Model, incorporating greater levels of detail and analysis in modules previously represented in the aggregate or under a profusion of simplifying assumptions. This document is intended to amend those sections of the Model Documentation Report (MDR) which describe these superseded modules. Significant changes have been implemented in the LDV Fuel Economy Model, the Alternative Fuel Vehicle Model, the LDV Fleet Mo… more
Date: February 1, 1997
Item Type: Refine your search to only Report
open access

Shale Oil Value Enhancement Research. Quarterly Report, March 1 - May 31, 1994

Description: Activities during this quarter focused on integrating the various tasks and elements. During Phase-1, substantial effort was placed on designing and automating the identification of molecular types present in shale oil. The ability to know the molecular composition and to track a given ``target`` species through the initial concentration steps was deemed critically important to the ultimate success of the three-phase project. It has been this molecular tracking ability that clearly distinguishe… more
Date: December 31, 1994
Item Type: Refine your search to only Report
open access

Scaling of structural failure

Description: This article attempts to review the progress achieved in the understanding of scaling and size effect in the failure of structures. Particular emphasis is placed on quasibrittle materials for which the size effect is complicated. Attention is focused on three main types of size effects, namely the statistical size effect due to randomness of strength, the energy release size effect, and the possible size effect due to fractality of fracture or microcracks. Definitive conclusions on the applicab… more
Date: January 1, 1997
Creator: Bazant, Zdenek P. & Chen, Er-Ping
Item Type: Refine your search to only Report
open access

Strontium-85 and plutonium-239 sorption in rock samples from the Semipalatinsk Test Site, Kazakhstan

Description: The adsorption and desorption of strontium and plutonium were studied as a function of rock type and simulated ground waters from the Semipalatinsk Test Site (STS). Seven different rock types were obtained from the Balapan Region of the STS and were subjected to x-ray diffraction analyses. Two different ground waters were simulated using data supplied by the National Nuclear Center. The results indicate the sorption of strontium is strongly dependent on the minerals present in the rock species … more
Date: March 1, 1999
Creator: Mason, C.F.V.; Lu, N.; Marusak, N.L.; Scheber, B.; Chipera, S.; Daukeyev, D. et al.
Item Type: Refine your search to only Report
open access

Federal Emergency Management Information System (FEMIS) Bill of Materials (BOM) for FEMIS Version 1.3

Description: This document describes the Bill of Materials (BOM) for the Federal Emergency Management Information System (FEMIS) for version 1.3. FEMIS runs on a client/server platform consisting of a UNIX system, employed as a data server, and personal computers (PCs) using the Windows NT operating system. Servers and PCs require the operating system, utility software, communications and other internal cards that are also listed in the following sections. FEMIS will support the use of Commercial Off-The-Sh… more
Date: February 7, 1997
Creator: Burford, M. J.; Gerhardstein, L. H.; Johnson, R. L.; Loveall, R. M.; Martin, T. J.; Millard, W. D. et al.
Item Type: Refine your search to only Report
open access

A hazard and probabilistic safety analysis of a high-level waste transfer process

Description: This paper describes a safety analysis of a transfer process for high-level radioactive and toxic waste. The analysis began with a hazard assessment that used elements of What If, Checklist, Failure Modes and Effects Analysis, and Hazards and Operability Study (HAZOP) techniques to identify and rough-in accident sequences. Based on this preliminary analysis, the most significant accident sequences were developed further using event trees. Quantitative frequency estimates for the accident sequen… more
Date: September 1, 1996
Creator: Bott, T. F. & Sasser, M. K.
Item Type: Refine your search to only Article
open access

Assessment of hot gas contaminant control

Description: The objective of this work is to gather data and information to assist DOE in responding to the NRC recommendation on hot gas cleanup by performing a comprehensive assessment of hot gas cleanup systems for advanced coal-based Integrated Gasification Combined Cycle (IGCC) and Pressurized Fluidized Bed Combustion (PFBC) including the status of development of the components of the hot gas cleanup systems, and the probable cost and performance impacts. The scope and time frame of information gather… more
Date: December 31, 1996
Creator: Rutkowski, M. D.; Klett, M. G. & Zaharchuk, R.
Item Type: Refine your search to only Article
open access

Use of multiple CT scans to accommodate large objects and stretch dynamic range of detectability

Description: Rotate-only X-ray CT scanners are preferred for their speed and dose utilization, but suffer from the restriction that the scanned object must fit within the radiation beam. In addition, the ratio of signals unattenuated by air paths to those penetrating thick, dense objects often exceeds the dynamic range of conventional X-ray detectors. Both of these disadvantages can be removed for objects larger than the X-ray beam by taking multiple scans, each of which exposes only part of the object. The… more
Date: September 1, 1994
Creator: Sivers, E.A.
Item Type: Refine your search to only Report
open access

Electron-phonon scattering in Si doped GaN

Description: Phonon-plasmon scattering in non-resonant Raman spectroscopy is used to determine the free electron concentration in Si doped GaN films. For various doping concentration and variable temperature the correlation with magneto-transport data is established. The freeze-out of the carrier concentration at low temperature is thus observed in a purely optical detection scheme. We observe a very long transient time of several hours for the carrier concentration as a reaction to temperature variation. T… more
Date: December 1, 1996
Creator: Wetzel, C.; Walukiewicz, W. & Ager, Joel
Item Type: Refine your search to only Article
open access

Tracer Modeling in an Urban Environment

Description: The accurate simulation of the transport of a tracer released into an urban area requires sufficiently high model resolution to resolve buildings and urban street canyons. Within the authors' group a modeling effort has been underway to develop a model -- termed HIGRAD -- capable of simulating flow at the high spatial resolution required within the urban environment. HIGRAD uses state-of-the-art numerical techniques to accurately simulate the regions of strong shear found near edges of building… more
Date: December 31, 1998
Creator: Reisner, Jon M.; Smith, William S.; Bossert, James E. & Winterkamp, Judy L.
Item Type: Refine your search to only Report
open access

Development of a telemetric heat stress monitor. Final report

Description: Hazardous-materials workers and firefighters wear clothing that protects them from external hazards, but the sealed environment of a protective suit makes its wearer susceptible to heat stress. A prototype of the Telemetric Heat Stress Monitor (THSM) was developed at LANL to warn workers, and personnel monitoring the workers, of incipient heat stress by detecting the workers` elevated temperatures and heart rates. The purpose of this CRADA was to transfer the information and technology from LAN… more
Date: October 21, 1996
Item Type: Refine your search to only Report
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