Search Results

open access

The comparison of element partitioning in two types of thermal treatment facilities and the effects on potential radiation dose

Description: The US Department of Energy (DOE) is performing a technical analysis to support the potential development of risk-based, numerical radiological control criteria (RCC) for mixed waste from DOE operations. As part of the technical analysis, potential future radiation doses are being calculated for workers at thermal treatment facilities and members of the public residing near such facilities. This study compared two types of thermal treatment systems: a conventional combustion chamber with excess… more
Date: May 1, 1995
Creator: Aaberg, R. L.; Burger, L. L.; Baker, D. A.; Wallo, A., III; Vazquez, G. A. & Beck, W. L.
Partner: UNT Libraries Government Documents Department
open access

Porosity in millimeter-scale welds of stainless steel : three-dimensional characterization.

Description: A variety of edge joints utilizing a continuous wave Nd:YAG laser have been produced and examined in a 304-L stainless steel to advance fundamental understanding of the linkage between processing and resultant microstructure in high-rate solidification events. Acquisition of three-dimensional reconstructions via micro-computed tomography combined with traditional metallography has allowed for qualitative and quantitative characterization of weld joints in a material system of wide use and broad… more
Date: May 1, 2012
Creator: Aagesen, Larry K. & Madison, Jonathan D.
Partner: UNT Libraries Government Documents Department
open access

Uranium hydrogeochemical and stream sediment reconnaissance in Lincoln and Flathead Counties, northwest Montana

Description: Between mid-May and late June 1976, 3409 water and water-transported sediment samples were collected from 1781 locations spread over an approximate 17000-km/sup 2/ area of northwestern Montana. All of the samples were analyzed for total uranium at the LASL, using standardized procedures and rigorous quality controls, the waters by fluorometry and the sediment (and those waters with greater than 10 ppb uranium) by delayed-neutron counting methods. All of the field collection, treatment, and pack… more
Date: May 1, 1977
Creator: Aamodt, P. L.
Partner: UNT Libraries Government Documents Department
open access

Uranium hydrogeochemical and stream sediment reconnaissance data from the area of the Noatak and portions of the Baird Mountains and Ambler River Quadrangles, Alaska

Description: During August 1976, a total of 876 natural waters and 861 bottom sediments were collected at a nominal density of one location each 23 km/sup 2/ from streams and small lakes throughout the Noatak NTMS quadrangle, the southern two-thirds of the Baird Mountains NTMS quadrangle, and in the southwest corner of the Ambler River NTMS quadrangle. These samples were collected as part of the National Uranium Resource Evaluation program in Alaska being conducted by the Los Alamos Scientific Laboratory (L… more
Date: May 1, 1978
Creator: Aamodt, Paul L.; Hill, Dwight E. & Sharp, Robert R., Jr.
Partner: UNT Libraries Government Documents Department
open access

Stabilization of spent sorbents from coal gasification. Technical report, December 1, 1992--February 28, 1993

Description: The objective of this investigation is to determine the kinetics of reactions involving partially sulfided dolomite and oxygen, which is needed for the design of the reactor system for the stabilization of sulfide-containing solid wastes from gasification of high sulfur coals. To achieve this objective, samples of partially sulfided dolomite are reacted with oxygen at a variety of operating conditions in a fluidized-bed reactor, where external diffusion limitations are avoided by using small qu… more
Date: May 1, 1993
Creator: Abbasian, J.; Hill, A. H.; Wangerow, J. R. & Banerjee, D. D.
Partner: UNT Libraries Government Documents Department
open access

Development of regenerable copper-based sorbents for hot gas cleanup: Final technical report, September 1, 1995--August 31, 1996

Description: The overall objective of this study was to determine the effectiveness of the copper-chromite sorbent (developed in previous ICCI-funded projects) for longer duration application under optimum conditions in the temperature range of 550{degrees}-650{degrees}C to minimize sorbent reduction and degradation during the cyclic process. Three (3) formulations of attrition resistant granules of the copper chromite sorbent (i.e., CuCr-10, CuCr-21, and CuCr-29) as well as one (1) copper chromite sorbent … more
Date: May 1, 1997
Creator: Abbasian, Javad; Slimane, Rachid B. & Wangerow, James R.
Partner: UNT Libraries Government Documents Department
open access

External-Fuel Thermionic Reactors

Description: The concept of the external-fuel thermionic converter, in which the fuel surrounds an inner emitter annulus, is introduced and the major advantages of its use in a thermionic reactor are discussed. In-core reactors, ranging from 15-ekW to megawatts, can be designed based on external-fuel converter modules of fixed emitter and collector dimensions. Sizes and weights of typical reactors in this power range are shown.
Date: May 1, 1968
Creator: Abbate, M. J.; Eisen, C. L.; Raab, B. & Schock, Alfred
Partner: UNT Libraries Government Documents Department
open access

QIKMIX: a quick-turnaround computer program for computing opacities of mixtures

Description: QIKMIX is a quick-turnaround computer code developed to compute the radiative Rosseland mean opacity of specified mixtures at specified temperature and density points. The QIKLIB data base, which QIKMIX uses, has been derived from the OPLIB library. For most mixtures, QIKMIX can compute opacities over a temperature range of 50 to 25,000 eV in less than 1 min of CDC 7600 computer time. The purpose of this report is to discuss the QIKLIB data base and the operation of the QIKMIX code.
Date: May 1, 1979
Creator: Abdallah, J. Jr. & Huebner, W.F.
Partner: UNT Libraries Government Documents Department
open access

Plated-through hole testing. Final repot

Description: An improved microresistance testing method to measure the thickness of copper plating in plated-through holes of double-sided printed wiring boards is presented. A new probe design, combined with a microprocessor controller, makes it possible for a direct reading tester to provide variables data. Tester design and software programs for the system are included. Results of correlation studies, comparing the improved resistance method to cross-sectional measurements are presented. Limitations on t… more
Date: May 1, 1980
Creator: Abel, W.B.
Partner: UNT Libraries Government Documents Department
open access

Laves intermetallics in stainless steel-zirconium alloys

Description: Laves intermetallics have a significant effect on properties of metal waste forms being developed at Argonne National Laboratory. These waste forms are stainless steel-zirconium alloys that will contain radioactive metal isotopes isolated from spent nuclear fuel by electrometallurgical treatment. The baseline waste form composition for stainless steel-clad fuels is stainless steel-15 wt.% zirconium (SS-15Zr). This article presents results of neutron diffraction measurements, heat-treatment stud… more
Date: May 1, 1997
Creator: Abraham, D. P.; McDeavitt, S. M. & Richardson, J. W. Jr.
Partner: UNT Libraries Government Documents Department
open access

Metal waste forms from the electrometallurgical treatment of spent nuclear fuel

Description: Stainless steel-zirconium alloys are being developed for the disposal of radioactive metal isotopes isolated using an electrometallurgical treatment technique to treat spent nuclear fuel. The nominal waste forms are stainless steel-15 wt% zirconium alloy and zirconium-8 wt% stainless steel alloy. These alloys are generated in yttria crucibles by melting the starting materials at 1,600 C under an argon atmosphere. This paper discusses the microstructures, corrosion and mechanical test results, a… more
Date: May 1, 1996
Creator: Abraham, D.P.; McDeavitt, S.M. & Park, J.
Partner: UNT Libraries Government Documents Department
open access

Health effects models for nuclear power plant accident consequence analysis: Low LET radiation: Part 2, Scientific bases for health effects models

Description: This report provides dose-response models intended to be used in estimating the radiological health effects of nuclear power plant accidents. Models of early and continuing effects, cancers and thyroid nodules, and genetic effects are provided. Two-parameter Weibull hazard functions are recommended for estimating the risks of early and continuing health effects. Three potentially lethal early effects -- the hematopoietic, pulmonary and gastrointestinal syndromes -- are considered. Linear and li… more
Date: May 1, 1989
Creator: Abrahamson, S.; Bender, M.; Book, S.; Buncher, C.; Denniston, C.; Gilbert, E. et al.
Partner: UNT Libraries Government Documents Department
open access

Initial objectives of on-site empirical modelling of thermal plumes: A preliminary evaluation of a river-site and a lake-site thermal plume

Description: This report recommends developing a statistical model to characterize the three-dimensionall pattern of thermal plumes, It indicates the danger of drawing detailed conclusions on the basis of a small number of observations, and emphasizes the need for proper interpretation of empirical measurements, Two reports, on the discharges (1) from the Dresden Power Station into the Illinois River and (2) from Waukegan Station into-Lake Michigan are analyzed. In conclusion, a plan for interpretation of t… more
Date: May 1, 1970
Creator: Abu-Shumays, I. K.
Partner: UNT Libraries Government Documents Department
open access

Waukegan Station plume

Description: In a previous report on effects of thermal discharges from power plants into the Great Lakes, we stressed the need for a statistical analysis of the spatial and temporal pattern of the thermal plume. The plume pattern is recognized as stochastic in nature and requires statistical analysis. A single realization of the Waukegan Station plume is studied with emphasis on its information content. Areas between isotherms at various depths are computed together with volumes of water in given temperatu… more
Date: May 1, 1971
Creator: Abu-Shumays, I. K.
Partner: UNT Libraries Government Documents Department
open access

Initial objectives of on-site empirical modelling of thermal plumes: A preliminary evaluation of a river-site and a lake-site thermal plume

Description: This report recommends developing a statistical model to characterize the three-dimensionall pattern of thermal plumes, It indicates the danger of drawing detailed conclusions on the basis of a small number of observations, and emphasizes the need for proper interpretation of empirical measurements, Two reports, on the discharges (1) from the Dresden Power Station into the Illinois River and (2) from Waukegan Station into-Lake Michigan are analyzed. In conclusion, a plan for interpretation of t… more
Date: May 1, 1970
Creator: Abu-Shumays, I.K.
Partner: UNT Libraries Government Documents Department
open access

Waukegan Station plume

Description: In a previous report on effects of thermal discharges from power plants into the Great Lakes, we stressed the need for a statistical analysis of the spatial and temporal pattern of the thermal plume. The plume pattern is recognized as stochastic in nature and requires statistical analysis. A single realization of the Waukegan Station plume is studied with emphasis on its information content. Areas between isotherms at various depths are computed together with volumes of water in given temperatu… more
Date: May 1, 1971
Creator: Abu-Shumays, I.K.
Partner: UNT Libraries Government Documents Department
open access

Thermodynamics of higher dimensional black holes

Description: We discuss the thermodynamics of higher dimensional black holes with particular emphasis on a new class of spinning black holes which, due to the increased number of Casimir invariants, have additional spin degrees of freedom. In suitable limits, analytic solutions in arbitrary dimensions are presented for their temperature, entropy, and specific heat. In 5 + 1 and 9 + 1 dimensions, more general forms for these quantities are given. It is shown that the specific heat for a higher dimensional bl… more
Date: May 1, 1986
Creator: Accetta, F.S. & Gleiser, M.
Partner: UNT Libraries Government Documents Department
open access

Tritium distribution in the MHTGR

Description: The {sup 3}H production, transport and environmental release from the 350 MW(t) Modular High Temperature Gas Cooled Reactor was analyzed. The analysis was performed using a modified TRITGO computer code, plant data base from the Preliminary Safety Information Document and materials property data from the Fuel Design Data Manual, Issue F. The analysis indicates that most of the {sup 3}H produced in the reactor is retained by the fuel particles and the structural graphite elements. The single lar… more
Date: May 1, 1988
Creator: Acharya, R.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen