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Transient-Overpower Test E8 on FFTF-Type Low-Power-Irradiated Fuel

Description: Test E8 simulated a hypothetical $3/s transient overpower accident in an LMFBR using seven (plutonium, uranium) oxide fuel elements of the FTR type. The test elements were pre-irradiated in the PNL-10 assembly in EBR-II to 5 at.% burnup at 30 kW/m. The pre-irradiation in EBR-II caused a fuel-restructuring range characteristic of a low-to-moderate power microstructure for FTR. Failure predictions indicated that fuel with this microstructural characteristic would fail at a lower energy deposition… more
Date: 1977?
Creator: Simms, R.; Murphy, W. F.; Stanford, G. S. & Rothman, Alan B.
Item Type: Refine your search to only Report
open access

Transportation Energy Conservation: Tools to Meet the National Objective. Summary of Meeting Held at Argonne National Laboratory, Illinois, February 12, 1976

Description: From the discussions it was concluded that: (1) energy conservation can be achieved in transportation systems through the implementation of system operation and technological strategies; (2) the Federal government should play a vital role in achieving energy conservation by strengthening its position as a central information source, a clearinghouse for state and local governments, industry, and private citizens; (3) the potential for energy savings in transportation system operation and managem… more
Date: 1976
Creator: LaBelle, Sarah J.
Item Type: Refine your search to only Report
open access

Tritium and Hydrogen Transport in LMFBR Systems: EBR-II, CRBR, and FFTF

Description: A tritium and hydrogen transport model has been employed to simulate concentration profiles, tritium losses to auxiliary containment systems, and cold trap burdens for EBR-II, CRBR, and FFTF. Experimental data from EBR-II were found to correlate well with calculated tritium and hydrogen profiles. A major change relative to previous transport models, namely, the inhibiting effect of oxide coatings on tritium permeation through reactor structural surfaces, has been incorporated into the current m… more
Date: September 1978
Creator: Renner, T. A. & McPheeters, C. C.
Item Type: Refine your search to only Report
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Tritium Processing and Containment Technology for Fusion Reactors, Annual Report: July 1975-June 1976

Description: The hydrogen permeabilities of selected metals, alloys, and multiplex preparations that are of interest to fusion reactor technology are being characterized. A high-vacuum hydrogen-permeation apparatus has been constructed for this purpose. A program of studies has been initiated to develop design details for the tritium-handling systems of near-term fusion reactors. This program has resulted in a better definition of reactor-fuel-cycle and enrichment requirements and has helped to identify maj… more
Date: 1976?
Creator: Maroni, V. A.; Calaway, W. F.; Misra, B.; Van Deventer, E. H.; Wegton, J. R.; Yonco, R. M. et al.
Item Type: Refine your search to only Report
open access

TSOAK-M1 : a Computer Code to Determine Tritium Reaction/Adsorption/Release Parameters from Experimental Results of Air-Detritiation Tests

Description: A computer code has been developed which permits the determination of tritium reaction (T2 to HTO)/adsorption/release and instrument correction parameters from enclosure (building) - detritiation test data. The code is based on a simplified model which treats each parameter as a normalized time-independent constant throughout the data-unfolding steps. Because of the complicated four-dimensional mathematical surface generated by the resulting differential equation system, occasional local-minima… more
Date: 1979?
Creator: Land, Robert H.; Land, Robert H.; Maroni, V. A. & Minkoff, Michael
Item Type: Refine your search to only Report
open access

U-Pu-Zr Metal Alloy: a Potential Fuel for LMFBR's

Description: This report critically reviews the available information pertinent to the potential use of uranium-plutonium-zirconium alloy fuels clad with stainless steel in LMFBR's. The areas considered include breeding potential, burnup potential, thermal performance, fuel fabricability, fuel reprocessing, and safety considerations. Because information on uranium-plutonium-zirconium alloys is limited, wide use is made of experience with EBR-II metallic driver fuel to infer advantages and limitations of ura… more
Date: November 1975
Creator: Walter, C. M.; Golden, G. H. & Olson, N. J.
Item Type: Refine your search to only Report
open access

An Ultrasonic Scanner for Stainless Steel Weld Inspections

Description: The large grain size and anisotropic nature of stainless steel weld metal make conventional ultrasonic testing very difficult. This paper evaluates a technique for minimizing the coherent noise in stainless steel weld metal. The method involves digitizing conventional A-scan traces and averaging them with a minicomputer. Results are presented for an ultrasonic scanner which interrogates a small volume of the weld metal while averaging the coherent ultrasonic noise.
Date: September 1978
Creator: Kupperman, D. S. & Reimann, K. J.
Item Type: Refine your search to only Report
open access

Ultrasonic Wave-Propagation Characteristics and Polarization in Stainless Steel Weld Metal

Description: Ultrasonic inspections of austenitic stainless steel weld metal are particularly difficult because of the dendritic structure and anisotropy of the material. The acoustic properties of stainless steel weld metal are discussed. Data on frequency spectra and variations in longitudinal and shear velocities with wave-propagation direction are presented. The difference in detectability of artificial reflectors using shear waves of varying polarization is presented, and it is demonstrated that, in so… more
Date: March 1978
Creator: Kupperman, D. S. & Reimann, K. J.
Item Type: Refine your search to only Report
open access

Unavailability Modeling and Analysis of Redundant Safety Systems

Description: Analytical expressions have been developed to estimate the average unavailability of an m-out-of-n (m/n, 1 less than or equal to m less than or equal to n less than or equal to 4) standby safety system of a nuclear power plant. The expressions take into account contributions made by testing, repair, equipment failure, human error, and different testing schemes. A computer code, ICARUS, has been written to incorporate these analytical equations. The code is capable of calculating the average una… more
Date: October 1979
Creator: Argonne National Laboratory. Reactor Analysis and Safety Division.
Item Type: Refine your search to only Report
open access

Uniaxial Tensile Properties of Zircaloy Containing Oxygen : Summary Report

Description: The uniaxial stress-strain behavior of Zircaloy-2 and -4, Zircaloy-oxygen alloys with a uniform oxygen distribution, and composite specimens with a ZrO2/alpha/beta layer structure was investigated over the range of experimental conditions: temperature 25-1400 degrees C; strain rate ; oxygen content 0.11 - 4.4 wt %; grain size 5-50 micrometers; texture longitudinal, transverse, and diagonal orientations; and microstructural state, which consists of the equiaxed alpha phase and various transforme… more
Date: June 1977
Creator: Garde, A. M.; Chung, H. M. & Kassner, T. F.
Item Type: Refine your search to only Report
open access

A Unified and Mechanistic Approach to Creep-Fatigue Damage

Description: A new creep-fatigue equation is proposed that takes into account both plastic strain and strain rate. The coefficients and exponents in the damage-rate equation are interpreted by means of the various damage mechanisms of the material. The damage-rate equation has been integrated to analyze various phenomena such as the effects of plastic strain rate on monotonic tensile or creep rupture time, rising mean strain on the low-cycle fatigue behavior at elevated temperature, tensile and compressive … more
Date: January 1976
Creator: Majumdar, S. & Maiya, P. S.
Item Type: Refine your search to only Report
open access

Updating the Symmetric Indefinite Factorization with Applications in a Modified Newton's Method

Description: In recent years the use of quasi-Newton methods in optimization algorithms has inspired much of the research in an area of numerical linear algebra called updating matrix factorizations. Previous research in this area has been concerned with updating the factorization of a symmetric positive definite matrix. Here, a numerical algorithm is presented for updating the Symmetric Indefinite Factorization of Bunch and Parlett. The algorithm requires only O(n/sup 2/) arithmetic operations to update th… more
Date: June 1977
Creator: Sorensen, Danny C.
Item Type: Refine your search to only Report
open access

Updating the Symmetric Indefinite Factorization with Applications in a Modified Newton's Method: A Dissertation submitted in partial satisfaction of the requirements for the degree Doctor of Philosphy in Mathematics

Description: In recent years the use of quasi-Newton methods in optimization algorithms has inspired much of the research in an area of numerical linear algebra called updating matrix factorizations. Previous research in this area has been concerned with updating the factorization of a symmetric positive definite matrix. Here, a numerical algorithm is presented for updating the Symmetric Indefinite Factorization of Bunch and Parlett. The algorithm requires only O(n²) arithmetic operations to update the fact… more
Date: 1977
Creator: Sorensen, Danny C.
Item Type: Refine your search to only Report
open access

Urban Design and Public Exposure to Carbon Monoxide

Description: In protecting the public from the risk of exposure to damaging levels of carbon monoxide, two approaches are possible; the pollutant's concentration may be lowered by traffic management measures or the public's rate of exposure may be reduced through urban design features. The present emphasis on traffic management stresses improving the flow and reducing the level of traffic, goals that are extremely costly to achieve in downtown areas. This paper examines ways to reduce risk of exposure by th… more
Date: 1976
Creator: Santini, Danilo J.
Item Type: Refine your search to only Report
open access

Use of Krypton-85 for the Detection of Pinhole Failures in GCFR Cladding

Description: Radioactive krypton-85 is used as a tracer to detect pinhole failures in GCFR cladding. High-purity helium (99.99% pure) that contains 0.3 ppm krypton-85 is used to pressurize the tubular test specimens, and a Geiger-Mueller counter is used to detect the krypton-85 in the helium environmental gas as it leaves the test chamber. Under the least favorable conditions of temperature and specimen pressure, it is estimated that the smallest pinhole failure that could be detected within 60 sec would ha… more
Date: May 1976
Creator: Yaggee, F. L.; Purohit, A. & Poeppel, R. B.
Item Type: Refine your search to only Report
open access

Uses of Advanced Pulsed Neutron Sources. Report of a Workshop Held at Argonne National Laboratory, October 21-24, 1975

Description: This report contains the conclusions that were drawn by nine panels of scientists in the fields of Biology; Chemical Spectroscopy; Chemical Structures of Crystalline Solids; Chemical Structures of Disordered Solids and Inhomogeneous Systems; Dynamics of Solids, Liquids, Glasses, and Gases; Magnetism; Neutron Sources; and Radiation Effects. The nine panel reports describe the applications found in these scientific areas, accompanying them with conceptual instruments designed for the measurements… more
Date: 1976?
Creator: Carpenter, J. M. & Werner, S. A.
Item Type: Refine your search to only Report
open access

Vapor-Explosion Experiments with Subcooled Freon

Description: Vapor-explosion experiments were conducted in a well-wetted Freon-22 and mineral-oil system in which the initial temperature of both the Freon and the mineral oil were varied over a wide range. These experiments were specifically conducted to investigate the importance of interface temperature in determining the explosive behavior of a given system. The results clearly demonstrate that the interface temperature developed upon intimate liquid-liquid contact is a valid characterization of the exp… more
Date: June 1977
Creator: Henry, Robert E. & McUmber, Louis M.
Item Type: Refine your search to only Report
open access

Viscosity of Molten Alumina

Description: In the analysis of LMFBR core-containment and heat-removal problems associated with hypothetical core-disruptive accidents, viscosity data on molten ceramics are needed to help analyze the convective heat transfer and flow patterns within liquid pools. An oscillating cup viscometer has been used to measure the viscosity of molten alumina in the temperature range from 2400 to 2750/sup 0/K. The data are represented by the equation: log eta = 11448/T - 8.2734 where the viscosity, eta, is given in … more
Date: 1978?
Creator: Blomquist, R. A.; Fink, J. K. & Leibowitz, L.
Item Type: Refine your search to only Report
open access

Waste Production and Management at EBR-II

Description: This report surveys waste production rates and disposal practices at EBR-II, a small-scale liquid-metal fast breeder reactor, for the past decade. Normal airborne wastes have been reduced by switching to low-sulfur fuel oil in auxiliary boilers and converting to use of reactor steam for part of the plant space heating. Atmospheric releases of gaseous radioactive wastes initially increased during the implementation of program for testing reactor fuels to and beyond cladding breach; but the efflu… more
Date: April 1979
Creator: Witbeck, L. C. & Fryer, R. M.
Item Type: Refine your search to only Report
open access

The Wetting Behavior of Molten-Chloride Electrolytes: Capillarity Effects in Lithium-Aluminum/Metal Sulfide Batteries

Description: A lithium-aluminum/iron sulfide battery which uses a molten LiCl-KCl electrolyte is presently under development at Argonne National Laboratory. The performance and lifetime of this electrochemical system depend, in part, on the ability of the electrolyte to wet the materials used as electrodes, separators, and particle retainers. For this reason contact-angle measurements were made on smooth, 100%-dense surfaces of the cell materials. In addition, electrolyte penetrability determinations were m… more
Date: August 1979
Creator: Eberhart, James G.
Item Type: Refine your search to only Report
open access

Xenon-Tagging in Production of EBR-II Mark II Driven-Fuel Elements

Description: About 1200 Mark II driver-fuel elements were xenon-tagged to facilitate qualification for irradiation of Mark II fuel manufactured at ANL-West. Tagging equipment was designed and developed. In this equipment, the plenum in a fuel-element jacket was evacuated then filled with xenon to a predetermined pressure. The equipment design allows tagging and element fabrication to proceed normal rates for production of fuel elements. A Kr-85 tracer in the xenon-tag gas verified by gamma counting the adeq… more
Date: March 1976
Creator: Wilkes, C. W.; Ryan, M. J.; Laug, M. T. & Fryer, R. M.
Item Type: Refine your search to only Report
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