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Experimental Studies Of Thermal And Chemical Interactions Between Molten Aluminum And Nuclear Dispersion Fuels With Water
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Book Synopsis Experimental Studies of Thermal and Chemical Interactions Between Molten Aluminum and Nuclear Dispersion Fuels with Water by : Ali Farahani
Download or read book Experimental Studies of Thermal and Chemical Interactions Between Molten Aluminum and Nuclear Dispersion Fuels with Water written by Ali Farahani and published by . This book was released on 1997 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental Studies of Thermal and Chemical Interactions Between Molten Aluminum and Nuclear Dispersion Fuels with Water by :
Download or read book Experimental Studies of Thermal and Chemical Interactions Between Molten Aluminum and Nuclear Dispersion Fuels with Water written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Because of the possibility of rapid physical and chemical molten fuel-water interactions during a core melt accident in noncommercial or experimental reactors, it is important to understand the interactions that might occur if these materials were to contact water. An existing vertical 1-D shock tube facility was improved and a gas sampling device to measure the gaseous hydrogen in the upper chamber of the shock tube was designed and built to study the impact of a water column driven downward by a pressurized gas onto both molten aluminum (6061 alloy) and oxide and silicide depleted nuclear dispersion fuels in aluminum matrices. The experiments were carried out with melt temperatures initially at 750 to 1,000 C and water at room temperature and driving pressures of 0.5 and 1 MPa. Very high transient pressures, in many cases even larger than the thermodynamic critical pressure of the water ([approximately] 20 MPa), were generated due to the interactions between the water and the crucible and its contents. The molten aluminum always reacted chemically with the water but the reaction did not increase consistently with increasing melt temperature. An aluminum ignition occurred when water at room temperature impacted 28.48 grams of molten aluminum at 980.3 C causing transient pressures greater than 69 MPa. No signs of aluminum ignition were observed in any of the experiments with the depleted nuclear dispersion fuels, U[sub 3]O[sub 8]-Al and U[sub 3]Si[sub 2]-Al. The greater was the molten aluminum-water chemical reaction, the finer was the debris recovered for a given set of initial conditions. Larger coolant velocities (larger driving pressures) resulted in more melt fragmentation but did not result in more molten aluminum-water chemical reaction. Decreasing the water temperature also resulted in more melt fragmentation and did not suppress the molten aluminum-water chemical reaction.
Book Synopsis Experimental Studies of Thermal and Chemical Interactions Between Oxide and Silicide Nuclear Fuels with Water by :
Download or read book Experimental Studies of Thermal and Chemical Interactions Between Oxide and Silicide Nuclear Fuels with Water written by and published by . This book was released on 1995 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: Given some transient power/cooling mismatch is a nuclear reactor and its inability to establish the necessary core cooling, energetic fuel-coolant interactions (FCI`s commonly called `vapor explosions`) could occur as a result of the core melting and coolant contact. Although a large number of studies have been done on energetic FCI`s, very few experiments have been performed with the actual fuel materials postulated to be produced in severe accidents. Because of the scarcity of well-characterized FCI data for uranium allows in noncommercial reactors (cermet and silicide fuels), we have conducted a series of experiments to provide a data base for the foregoing materials. An existing 1-D shock-tube facility was modified to handle depleted radioactive materials (U3O-Al, and U3Si2-Al). Our objectives have been to determine the effects of the initial fuel composition and temperature and the driving pressure (triggering) on the explosion work output, dynamic pressures, transient temperatures, and the hydrogen production. Experimental results indicate limited energetics, mainly thermal interactions, for these fuel materials as compared to aluminum where more chemical reactions occur between the molten aluminum and water.
Book Synopsis Metal-water Reactions by : W. F. Zelezny
Download or read book Metal-water Reactions written by W. F. Zelezny and published by . This book was released on 1960 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analytical and Experimental Investigation of the Dispersion Process During Rapid Transients for the Aluminum-based Nuclear Fuel Plates by :
Download or read book Analytical and Experimental Investigation of the Dispersion Process During Rapid Transients for the Aluminum-based Nuclear Fuel Plates written by and published by . This book was released on 1995 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: A thermally induced fuel-plate dispersion model was developed to analyze for dispersive potential and determine the onset of fuel plate dispersion for aluminum-based research and test reactor fuels. The effect of rapid energy deposition in a fuel plate was simulated. Several data types for aluminum-based fuels tested in the Nuclear Safety Research Reactor (NSRR) facility in Japan and in the Transient Reactor Test (TREAT) facility in Idaho, US, were reviewed. Analyses of experiments show that the onset of fuel dispersion is clearly linked to a sharp rise in the predicted strain rate, which further coincides with the onset of aluminum vaporization. Analysis also shows that aluminum oxidation and exothermal chemical reaction between the fuel and aluminum can significantly affect: the energy deposition characteristics and, therefore dispersion onset connected with aluminum vaporization, and the onset of aluminum vaporization.
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1997 with total page 830 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aluminum-water Reflood Experiments by : Billy W. Marshall
Download or read book Aluminum-water Reflood Experiments written by Billy W. Marshall and published by . This book was released on 1994 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Metal-water Reactions by : Sydney C. Furman
Download or read book Metal-water Reactions written by Sydney C. Furman and published by . This book was released on 1959 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1994-08 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1973 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Comprehensive Nuclear Materials by : Todd R Allen
Download or read book Comprehensive Nuclear Materials written by Todd R Allen and published by Elsevier. This book was released on 2011-05-12 with total page 3552 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive Nuclear Materials, Five Volume Set discusses the major classes of materials suitable for usage in nuclear fission, fusion reactors and high power accelerators, and for diverse functions in fuels, cladding, moderator and control materials, structural, functional, and waste materials. The work addresses the full panorama of contemporary international research in nuclear materials, from Actinides to Zirconium alloys, from the worlds' leading scientists and engineers. Critically reviews the major classes and functions of materials, supporting the selection, assessment, validation and engineering of materials in extreme nuclear environment Fully integrated with F-elements.net, a proprietary database containing useful cross-referenced property data on the lanthanides and actinides Details contemporary developments in numerical simulation, modelling, experimentation, and computational analysis, for effective implementation in labs and plants
Book Synopsis Experimental Investigation of Energetic Interactions Between Aluminum and Water by : Dennis Kin-Chung Ko
Download or read book Experimental Investigation of Energetic Interactions Between Aluminum and Water written by Dennis Kin-Chung Ko and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The interaction between aluminum and water is studied experimentally. A capacitor discharge system is used to heat a 17 mm long aluminum sample submerged in water in a test chamber. Two types of aluminum samples are used, wire and ribbon. The ribbon geometry provides a 40.1% increase in surface area over the cylindrical wire. Results show that the critical energy threshold for the ribbon, above which a sustained combustion is observed, is about 500 J/g less than that of the wire sample. The increased surface area serves to enhance the degree of chemical reaction between aluminum and water. Experiments are also performed using wire samples in hot water to investigate the effects of coolant subcooling. The critical threshold is not affected significantly when compared to results from experiments in cold water. However, there is an increase in the interaction strength when the energy delivered to the sample is above the threshold of 2250 J/g.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992 with total page 1572 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fundamental Nuclear Energy Research by : U.S. Atomic Energy Commission. Division of Plans and Reports
Download or read book Fundamental Nuclear Energy Research written by U.S. Atomic Energy Commission. Division of Plans and Reports and published by . This book was released on 1965 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Publications, Reports, and Papers for 1965 from Oak Ridge National Laboratory by : K.O. Johnsson
Download or read book Publications, Reports, and Papers for 1965 from Oak Ridge National Laboratory written by K.O. Johnsson and published by . This book was released on 1966 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fundamental Experimentation and Theoretical Modeling for Prevention of Molten Aluminum-water Steam Explosions in Casting Pits by :
Download or read book Fundamental Experimentation and Theoretical Modeling for Prevention of Molten Aluminum-water Steam Explosions in Casting Pits written by and published by . This book was released on 1997 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explosive interactions between molten aluminum and water are being studied with a focus on fundamentals to determine what causes robust-enough triggers for explosion onset, to determine the extent of protection provided from various coatings and to develop a novel methodology for prevention. The workscope includes experimentation and mathematical modeling of the interactions between molten metals and water at various different coated and uncoated surfaces. Phenomenological issues related to surface wettability, gas generation from coatings, charring of coatings, inertial constraint, melt temperature, water temperature, external shocks are being investigated systematically to gage their relative impact on triggerability of surface-assisted steam explosion. The steam explosion triggering studies (SETS) facility was designed and constructed as a rapid-turnaround, cost-effective, and safe means to address these phenomenological issues and to derive quantitative, practically-fundamental data for situations covering melt masses relocating over submerged surfaces ranging from a few grams to (approximately) 1,000 kg. Initial testing has provided insightful results which are very consistent with empirical field observations taken over the past 40 years. This paper provides the scientific basis of the technical approach for design and operation of the SETS facility, along with key results and insights from tests conducted so far.
Download or read book World Aluminum Abstracts written by and published by . This book was released on 1970 with total page 986 pages. Available in PDF, EPUB and Kindle. Book excerpt:
