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PHYSICO-CHEMICAL STUDIES OF CLAD UO$sub 2$ IN POTENTIAL MELTDOWN ENVIRONMENTS.

Description: Behavior of zirconium alloy clad UO{sub 2} fuel elements in steam and air at 100 deg C to the melting point of UO{sub 2} was studied. Heating tests of Zircaloy-4 tubes with internal pressure show that steam oxidation of the metal results in lower deformation rates, less deformation, and higher failure temperature. Air oxidation of Zircaloy-4 is erratic and occurs at a greater rate than in steam due to the reaction with N in the air. Rate-controlling mechanism for UO{sub 2} oxidation by steam is… more
Date: October 31, 1969
Creator: White, J.F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Experimental development of nuclear pumped laser candidate inertial confinement fusion driver

Description: This progress report is submitted at the end of the first year of a 3-year project grant studying development of a nuclear pumped atomic iodine laser. The first section of the report will provide background on the study and briefly describe the original plans for the 3-year project. The second section will detail the work done to date. Included will be a description of the preparations made for experimentation, as well as some preliminary results recently obtained. Plans for the upcoming budget… more
Date: May 31, 1989
Creator: Miley, George H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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DEVELOPMENT OF PLUTONIUM-BEARING FUEL MATERIALS. Progress Report, October 1-December 31, 1961

Description: Continued effort is reported on preparation and characterization of PuO/ sub 2/ and UO/sub 2/-- PuO/sub 2/ mixtures. Sintering and characterization of pellets for irradiation tests was emphasized, and efforts were also devoted to plasma torch production of spherical PuO /sub 2/ and coating of oxide materials. PuO/sub 2/ produced by the oxalate process from low concentration feed contains agglomerates which are not readily broken down, while that produced from normal feed contains larger agglome… more
Date: October 31, 1962
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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METALLURGY DIVISION ANNUAL REPORT FOR 1961

Description: 8 < 8 7 8 7 < 5 8 6 ; : 9: 2 8 9 9 ; ; < 9 : 9 : 8 8 I of transformation and fusion, of U and U- fissium alloys were completed during the year. Data are also included on cladding penetration by molten U-fissium alloys and molten Pu fuel. Irradiation studies of U-fissium and Ufissium-Zr alloys were conducted. Progress is reported on the development of methods and equipment for remote refabrication of EBR-II fuel. Development and Fabrication of EBR-I Core IV Fuel Elements. A program to investigat… more
Date: October 31, 1962
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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DESIGN AND OPERATION OF 1800 F PUMPED BOILING RUBIDIUM LOOP SYSTEM AND DETERMINATION OF DENSITY AND VAPOR PRESSURE RUBIDIUM BETWEEN 174 AND 1800 F. Space Power Systems Technology Studies: Rubidium, Corrosion and Physical Properties Evaluation Program. Final Report (Report No. 16), February 1, 1960 through May 31, 1961

Description: A pumped boiling rubidium loop was designed, operated, and analyzed. The loop simulated some of the characteristics of a boiling rubidium space power conversion system. Such a system would involve either a reactor or heat exchanger as the power source, and a turbine and radiator as the power conversion and vapor condensing equipment. This loop was used to study instrumentation and control problems and effects of rubidium corrosion on containment materials, and to gain some rough physical proper… more
Date: October 31, 1962
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Helium generation in fusion reactor materials. Technical progress report, April--September 1977

Description: The near-term objectives of this program are to measure the spectrum-integrated helium generation rates and cross sections of a number of pure elements and alloys in several high-intensity neutron sources, and to develop and demonstrate neutron dosimetry procedures using some of these materials. To this end, four neutron irradiation experiments have now been run: one using accelerator-produced d-Be neutrons, two using the accelerator-produced d-T reaction, and one in the neutron field of a mixe… more
Date: January 31, 1978
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Engineering assessment of inactive uranium mill tailings, Shiprock site, Shiprock, New Mexico. Phase II, Title I

Description: Ford, Bacon and Davis Utah Inc. has performed an engineering assessment of the problems resulting from the existence of radioactive uranium mill tailings at Shiprock, New Mexico. The Phase II, Title I services include the preparation of topographic maps, the performance of core drillings and radiometric measurements sufficient to determine areas and volumes of tailings and other radium-contaminated materials, the evaluation of resulting radiation exposures of individuals and nearby populations,… more
Date: March 31, 1977
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Assessment of underground coal gasification in bituminous coals: potential UCG products and markets. Final report, Phase I

Description: The following conclusions were drawn from the study: (1) The US will continue to require new sources of energy fuels and substitutes for petrochemical feedstocks into the foreseeable future. Most of this requirement will be met using coal. However, the cost of mining, transporting, cleaning, and preparing coal, disposing of ash or slag and scrubbing stack gases continues to rise; particularly, in the Eastern US where the need is greatest. UCG avoids these pitfalls and, as such, should be consid… more
Date: January 31, 1982
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Engineering assessment of inactive uranium mill tailings, Monument Valley site, Monument Valley, Arizona. A summary of the Phase II, Title I

Description: Ford, Bacon and Davis Utah Inc. has performed an engineering assessment of the problems resulting from the existence of radioactive uranium mill tailings at the Monument Valley millsite in Arizona. The Phase II, Title I services include the preparation of topographic maps, the performance of core drillings and radiometric measurements sufficient to determine areas and volumes of tailings and other radium-contaminated materials, the evaluation of resulting radiation exposures of individuals resi… more
Date: March 31, 1977
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

NASA-AEC LIQUID METALS CORROSION MEETING HELD DECEMBER 14-15, 1961, BROKHAVEN NATIONAL LABORATORY, UPTON, LONG ISLAND, NEW YORK

Description: Twenty-two papers are included. Separate abstracts were prepared for fifteen of these. The presentations not abstracted concern liquid metal research, evaluation of materials in gaseous and liquid Hg, liquid metal corrosion, of loop materials, effects of K vapor on refrsctory alloys, research program on Na components, Na loop studies, and determination of O in Na. (J.R.D.)
Date: October 31, 1962
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Phase II, Title I engineering assessment of inactive uranium mill tailings, Monument Valley site, Monument Valley, Arizona. [Environmental effects, health hazards, and options for stabilization of tailings or fencing of site]

Description: An engineering assessment was made of the problems resulting from the existence of radioactive uranium mill tailings at the Monument Valley millsite in Arizona. The Phase II, Title I services include the preparation of topographic maps, the performance of core drillings and radiometric measurements sufficient to determine areas and volumes of tailings and other radium-contaminated materials, the evaluation of resulting radiation exposures of individuals residing nearby, the investigation of sit… more
Date: March 31, 1977
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Experimental and theoretical studies of particle generation afterlaser ablation of copper with background gas at atmosphericpressure

Description: Laser ablation has proven to be an effective method for generating nanoparticles; particles are produced in the laser induced vapor plume during the cooling stage. To understand the in-situ condensation process, a series of time resolved light scattering images were recorded and analyzed. Significant changes in the condensation rate and the shape of the condensed aerosol plume were observed in two background gases, helium and argon. The primary particle shape and size distribution were measured… more
Date: May 31, 2007
Creator: Wen, Sy-Bor; Mao, Xianglei; Greif, Ralph & Russo, Richard E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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A METHOD FOR ESTIMATING GAS PRESSURE IN 3013 CONTAINERS USING AN ISP DATABASE QUERY

Description: The U.S. Department of Energy's Integrated Surveillance Program (ISP) is responsible for the storage and surveillance of plutonium-bearing material. During storage, plutonium-bearing material has the potential to generate hydrogen gas from the radiolysis of adsorbed water. The generation of hydrogen gas is a safety concern, especially when a container is breached within a glove box during destructive evaluation. To address this issue, the DOE established a standard (DOE, 2004) that sets the cri… more
Date: July 31, 2008
Creator: Friday, G; L. G. Peppers, L & D. K. Veirs, D
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Leakage of CO2 from geologic storage: Role of secondary accumulation at shallow depth

Description: Geologic storage of CO2 can be a viable technology forreducing atmospheric emissions of greenhouse gases only if it can bedemonstrated that leakage from proposed storage reservoirs and associatedhazards are small or can be mitigated. Risk assessment must evaluatepotential leakage scenarios and develop a rational, mechanisticunderstanding of CO2 behavior during leakage. Flow of CO2 may be subjectto positive feedbacks that could amplify leakage risks and hazards,placing a premium on identifying a… more
Date: May 31, 2007
Creator: Pruess, K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The Flammability Analysis and Time to Reach Lower Flammability Limit Calculations on the Waste Evaporation at 242-a Evaporator

Description: This document describes the analysis of the waste evaporation process on the flammability behavior. The evaluation calculates the gas generation rate, time to reach 25% and 100% of the lower flammability limit (LFL), and minimum ventilation rates for the 242-A Evaporator facility during the normal evaporation process and when vacuum is lost. This analysis performs flammability calculations on the waste currently within all 28 double-shell tanks (DST) under various evaporation process conditions… more
Date: October 31, 2007
Creator: Hu, T. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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