High-temperature oxygen dissolution in liquid zirconium

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[唯一标识符]:CDSITC.AEROSPACE.A96-33383
[文献来源]:美国航空航天数据库(aerospace)
[资源原始索取号]:A1996-33383; Reference AN: A96-33383
[标题]:High-temperature oxygen dissolution in liquid zirconium
[作者]:Molodetsky I E; Dreizin E L
[书名]:IN: Decomposition, combustion, and detonation chemistry of energetic materials; Proceedings of the Symposium, Boston, MA, Nov. 27-30, 1995 (A96-33363 08-28), Pittsburgh, PA, Materials Research Society (MRS Symposium Proceedings. Vol. 418), 1996, p. 195-20
[文摘]:The enthalpy of oxygen dissolution in liquid zirconium occurring during the combustion of Zr particles is estimated. The analysis presented uses direct experimental measurements of the temperature, size, and composition histories of burning Zr particles. The dissolution enthalpy is limited by the range of 700-830 kJ/mol and is somewhat less than that of Zr oxidation. This enthalpy determines the rate of the heat release during Zr combustion until stoichiometric ZrO2 forms out of the supersaturated Zr/O solution. Stoichiometric ZrO2 is formed near the end of combustion and the additional energy released at that time causes a rapid temperature increase which can trigger a particle explosion. (Author)
[关键词]:ZIRCONIUM ; LIQUID METALS; HIGH TEMPERATURE; OXYGEN ; ZIRCONIUM OXIDES; METAL COMBUSTION; GAS TEMPERATURE; COMBUSTION TEMPERATURE
[出版年份]:1996
[专业领域]:INORGANIC AND PHYSICAL CHEMISTRY
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[唯一标识符]:CDSTIC.DOE.911198
[文献来源]:美国能源部报告数据库
[文献类型]:科技报告
[资源原始索取号]:OSTI ID: 911198
[标题]:Developing Human Performance Measures (PSAM8)
[作者]:Jeffrey C. Joe
[机构]:Idaho National Laboratory (INL)
[文摘]:Through the reactor oversight process (ROP), the U.S. Nuclear Regulatory Commission (NRC) monitors the performance of utilities licensed to operate nuclear power plants. The process is designed to assure public health and safety by providing reasonable assurance that licensees are meeting the cornerstones of safety and designated crosscutting elements. The reactor inspection program, together with performance indicators (PIs), and enforcement activities form the basis for the NRC??s risk-informed, performance based regulatory framework. While human performance is a key component in the safe operation of nuclear power plants and is a designated cross-cutting element of the ROP, there is currently no direct inspection or performance indicator for assessing human performance. Rather, when human performance is identified as a substantive cross cutting element in any 1 of 3 categories (resources, organizational or personnel), it is then evaluated for common themes to determine if follow-up actions are warranted. However, variability in human performance occurs from day to day, across activities that vary in complexity, and workgroups, contributing to the uncertainty in the outcomes of performance. While some variability in human performance may be random, much of the variability may be attributed to factors that are not currently assessed. There is a need to identify and assess aspects of human performance that relate to plant safety and to develop measures that can be used to successfully assure licensee performance and indicate when additional investigation may be required. This paper presents research that establishes a technical basis for developing human performance measures. In particular, we discuss: 1) how historical data already gives some indication of connection between human performance and overall plant performance, 2) how industry led efforts to measure and model human performance and organizational factors could serve as a data source and basis for a framework, 3) how our use of modeling and simulation techniques could be used to develop and validate measures of human performance, and 4) what the possible outcomes are from this research as the modeling and simulation efforts generate results.
[关键词]:99 - GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
[出版时间]:2006 Dec 01
[出版年份]:2006
[报告号]:INL/CON-06-11248
[合同号]:DE-AC07-99ID-13727
[主办机构]:USDOE
[来源]:Conference
[来源关系]:Conference: INTERNATIONAL CONFERENCE ON PROBABILISTIC SAFETY ASSESSMENT AND MANAGEMENT,New Orleans, LA,05/14/2006,05/09/2006
[国别]:United States
[总页数]:10


[文献类型]:科技报告
[标题]:Inverse Airfoil Design Procedure Using a Multigrid Navier-Stokes Method.
[作者]:malone, j. b. swanson, r. c.
[机构]:National Aeronautics and Space Administration,Hampton,VA. Langley Research Center.
[关键词]:airfoils,design analysis,airfoil profiles,multigrid methods,navier-stokes equation,pressure distribution,algorithms,camber,iteration,shapes,
[出版年份]:1992
[报告时间]:1991,
[页码]:12p
[馆藏索取号]:N92-13932
[总页数]:12