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Safety rod latch inspection

Description: During an attempt to raise control rods from the 100 K reactor in December, one rod could not be withdrawn. Subsequent investigation revealed that a small button'' in the latch mechanism had broken off of the lock plunger'' and was wedged in a position that prevented rod withdrawal. Concern that this failure may have resulted from corrosion or some other metallurgical problem resulted in a request that SRL examine six typical latch mechanisms from the 100 L reactor by use of radiography and met… more
Date: February 1, 1992
Creator: Leader, D.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Metals and Ceramics Division. Annual progress report, ending June 30, 1980

Description: Research is reported concerning: (1) engineering materials, including materials compatibility, mechanical properties, nondestructive testing, pressure vessel technology, and welding and brazing; (2) fuels and processes consisting of ceramic technology, fuel cycle technology, fuels evaluation, fuel fabrication and metals processing; and (3) materials science which includes, ceramic studies, physical metallurgy properties, radiation effects and microstructural analysis, metastable and superconduc… more
Date: September 1, 1980
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Failure of sheathed thermocouples due to thermal cycling

Description: Open circuit failures (up to 100%) in small-diameter thermocouples used in electrically heated nuclear fuel rod simulator prototypes during thermal cycling tests were investigated to determine the cause(s) of the failures. The experiments conducted to determine the relative effects of differential thermal expansion, wire size, grain size, and manufacturing technology are described. It was concluded that the large grain size and embrittlement which result from certain common manufacturing anneal… more
Date: March 1, 1982
Creator: Anderson, R.L. & Ludwig, R.L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Some recent observations on the radiation behavior of uranium silicide dispersion fuel

Description: Addition of B{sub 4}C burnable poison results in higher plate swelling in both U{sub 3}Si{sub 2} and U{sub 3}Si-Al dispersion fuel plates and also decreases the blister threshold temperature of these plates. Prolonged annealing of U{sub 3}Si{sub 2}-Al fuel plates produced no blister after 696 hours at 400{degrees}C. Blister formation started between 257 hours and 327 hours at 425{degrees}C and between 115 hours and 210 hours at 450{degrees}C. Operation with breached cladding resulted in pillowi… more
Date: January 1, 1988
Creator: Hofman, G.L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Chemical Engineering Division Fuel Cycle Programs. Quarterly progress report, January-March 1979

Description: In the program on pyrochemical and dry processing methods (PDPM) for nuclear fuel, corrosion testing of refractory metals and alloys, graphite, and SiC in PDPM environments was done. A tungsten-metallized Al/sub 2/O/sub 3/-3% Y/sub 2/O/sub 3/ crucible was successfully fabricated. Tungsten microstructure of a plasma-sprayed tungsten crucible was stabilized by nickel infiltration and heat treatment. Solubility measurements of Th in Cd and Cd-Mg alloys were continued, as were experiments to study … more
Date: January 1, 1980
Creator: Steindler, M J; Ader, M & Barletta, R E
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Ceramic and cermet targets

Description: Use of isotopic materials as targets in high temperature environments, e.g., reactor cores, require that chemically stable forms of the isotopes be employed. Usually oxides are compatible with temperatures > 1600/sup 0/K, although some light element oxides exhibit some volatility at temperatures > 1300/sup 0/K. Especially in the case of heavy elements, the relatively low melting points of the metals, poor compatibility of the metals with encapsulation materials, and high chemical reactivity at … more
Date: January 1, 1979
Creator: Kobisk, E. H.; Quinby, T. C. & Aaron, W. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The EDM surface: Topography, chemistry, and metallurgy

Description: The surface created by the electric discharge machining (EDM) process is of special interest because it has been shown to have a negative effect on the fatigue properties of many alloys. An understanding of the surface metallurgy and chemistry is important in predicting those alloys which are most susceptible to failure. Remedial actions, including thickness minimization, alteration, or removal of the surface layer are addressed.
Date: January 1, 1991
Creator: Fuller, J.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Investigation of the sintering kinetics of lead powders. Final technical report

Description: An analysis of the parameters involved in the sintering of lead powders under vacuum has been made. Sintering was accomplished at temperatures between 250/sup 0/ and 280/sup 0/C. Evaluation of surface area reduction data results in values of the mechanism exponent N between 5.3 and 6.7. Lack of shrinkage and the low vapor pressure of lead at the experimental temperatures lead to the conclusion that surface diffusion is the rate-controlling sintering mechanism. However, comparison of the experim… more
Date: August 1, 1977
Creator: Higgins, P. K. & Munir, Z. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Plutonium research program, fiscal year 1970

Description: This report contains a compilation of unclassified plutonium programs underway in FY 1970 in the field of materials science. It includes work in ceramics, metallurgy, solid state physics and physical chemistry. Information on each of the programs is given in five sub-headings: scope of the work; technical effort in manyears; primary class of materials studied; person(s) to contact for further information; and reports and publications. All the work listed is restricted to either research or long… more
Date: March 1, 1970
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Energy savings by means of fuel cell electrodes in electro-chemical industries. Progress report, November 1, 1979-January 31, 1980

Description: Zinc electrowinning data, obtained with hydrogen depolarized anodes operating in a plant feed electrolyte at 55/sup 0/C, are presented in this quarterly report for investigations involving the following: performance of an anode containing a low platinum loading, i.e. 0.09 mg/cm/sup 2/ instead of the typical 0.33 mg/cm/sup 2/, and an anode catalyzed with palladium instead of platinum; establishment of a feed and bleed system to maintain a constant electrolyte composition; exploratory experiments… more
Date: April 18, 1980
Creator: Bar-Ilan, A.; Juda, W.; Allen, R.J. & Lindstrom, R.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Program summaries for 1979: energy sciences programs

Description: This report describes the objectives of the various research programs being conducted by the Chemical Sciences, Metallurgy and Materials Science, and Process Science divisions of the BNL Dept. of Energy and Environment. Some of the more significant accomplishments during 1979 are also reported along with plans for 1980. Some of the topics under study include porphyrins, combustion, coal utilization, superconductors, semiconductors, coal, conversion, fluidized-bed combustion, polymers, etc. (DLC) more
Date: December 1, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Fatigue-crack propagation in aluminum-lithium alloys processed by power and ingot metallurgy

Description: Fatigue-crack propagation behavior in powder-metallurgy (P/M) aluminum-lithium alloys, namely, mechanically-alloyed (MA) Al-4.0Mg-1.5Li-1.1C-0.80{sub 2} (Inco 905-XL) and rapid-solidification-processed (RSP) Al-2.6Li-1.0Cu-0.5Mg-0.5Zr (Allied 644-B) extrusions, has been studied, and results compared with data on an equivalent ingot-metallurgy (I/M) Al-Li alloy, 2090-T81 plate. Fatigue-crack growth resistance of the RSP Al-Li alloy is found to be comparable to the I/M Al-Li alloy; in contrast, c… more
Date: April 1, 1990
Creator: Venkateswara Rao, K.T.; Ritchie, R.O. (Lawrence Berkeley Lab., CA (United States)); Kim, N.J. (Pohang Inst. of Science and Technology (Korea, Republic of)) & Pizzo, P.P. (San Jose State Univ., CA (United States))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Review of some past and present powder metallurgy programs at the Los Alamos Scientific Laboratory

Description: Powder metallurgy programs at LASL are reviewed. Topics covered include: KlWl reactor fuel elements; Phoebus reactor fuel elements, criticality control and poison plate material, structural composites for fuel element supports, and heat shields for fuel element supports; thermionic emitter reactor uranium carbide--zirconium carbide fuel pins, and molybdenum--uranium oxide fuel pins; laser and electron beam fusion targets; and current work in MHD components. (GHT)
Date: January 1, 1977
Creator: Sheinberg, H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Power reactor embrittlement data base

Description: Regulatory and research evaluations of embrittlement prediction models and of vessel integrity under load can be greatly expedited by the use of a well-designed, computerized embrittlement data base. The Power Reactor Embrittlement Data Base (PR-EDB) is a comprehensive collection of data from surveillance reports and other published reports of commercial nuclear reactors. The uses of the data base require that as many different data as available are collected from as many sources as possible wi… more
Date: January 1, 1989
Creator: Kam, F.B.K.; Stallmann, F.W. & Wang, J.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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MSTD 2007 Publications and Patents

Description: The Materials Science and Technology Division (MSTD) supports the central scientific and technological missions of the Laboratory, and at the same time, executes world-class, fundamental research and novel technological development over a wide range of disciplines. Our organization is driven by the institutional needs in nuclear weapons stockpile science, high-energy-density science, nuclear reactor science, and energy and environment science and technology. We maintain expertise and capabiliti… more
Date: April 1, 2008
Creator: King, W. E.
Item Type: Refine your search to only Book
Partner: UNT Libraries Government Documents Department
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Third millenium ideal gas and condensed phase thermochemical database for combustion (with update from active thermochemical tables).

Description: The thermochemical database of species involved in combustion processes is and has been available for free use for over 25 years. It was first published in print in 1984, approximately 8 years after it was first assembled, and contained 215 species at the time. This is the 7th printed edition and most likely will be the last one in print in the present format, which involves substantial manual labor. The database currently contains more than 1300 species, specifically organic molecules and radi… more
Date: July 29, 2005
Creator: Burcat, A.; Ruscic, B.; Chemistry & Tech., Technion - Israel Inst. of
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Basic and applied research program. Semiannual report, July-December 1978

Description: The status of research projects in the Basic and Applied Research Program at SERI is presented for the semiannual period ending December 31, 1978. The five tasks in this program are grouped into Materials Research and Development, Materials Processing and Development, Photoconversion Research, Exploratory Research, and Energy Resource and Assessment and have been carried out by personnel in the Materials, Bio/Chemical Conversion, and Energy Resource and Assessment Branches. Subtask elements in … more
Date: December 1, 1979
Creator: Butler, B.L. (ed.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Analysis of cracked core spray piping from the Quad Cities Unit 2 boiling water reactor

Description: The results of a metallurgical analysis of leaking cracks detected in the core spray injection piping of Commonwealth Edison Company's Quad Cities Unit 2 Boiling Water Reactor are described. The cracks were present in a welded 105/sup 0/ elbow assembly in the line, and were found to be caused by intergranular stress corrosion cracking associated with the probable presence of dissolved oxygen in the reactor cooling water and the presence of grain boundary sensitization and local residual stresse… more
Date: September 1, 1982
Creator: Diercks, D. R. & Gaitonde, S. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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High-temperature electrically conductive ceramic composite and method for making same

Description: The present invention relates to a metal-oxide ceramic composition useful in induction heating applications for treating uranium and uranium alloys. The ceramic composition is electrically conductive at room temperature and is nonreactive with molten uranium. The composition is prepared from a particulate admixture of 20 to 50 vol. % niobium and zirconium oxide which may be stabilized with an addition of a further oxide such as magnesium oxide, calcium oxide, or yttria. The composition is prepa… more
Date: June 9, 1981
Creator: Beck, D.E.; Gooch, J.G.; Holcombe, C.E. Jr. & Masters, D.R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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Analysis of the October 5, 1979 lithium spill and fire in the Lithium Processing Test Loop

Description: On October 5, 1979, the Lithium Processing Test Loop (LPTL) developed a lithium leak in the electromagnetic (EM) pump channel, which damaged the pump, its surrounding support structure, and the underlying floor pan. A thorough analysis of the causes and consequences of the pump failure was conducted by personnel from CEN and several other ANL divisions. Metallurgical analyses of the elliptical pump channel and adjacent piping revealed that there was a significant buildup of iron-rich crystallit… more
Date: December 1, 1981
Creator: Maroni, V. A.; Beatty, R. A.; Brown, H. L.; Coleman, L. F.; Foose, R. M.; McPheeters, C. C. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Preirradiation microstructural characterization of FFTF mixed oxide fuel

Description: Charts, drawings, graphs, and photographs are presented concerning the research program to evaluate potential for fuel to undergo densification during irradiation, to assure PuO/sub 2/ homogeneity in mixed oxide fuel, to provide data base for pre-/post-irradiation comparisons, and to evaluate effect of fuel fabrication conditions.
Date: January 1, 1981
Creator: Rasmussen, D. E. & Schaus, P.S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Status of high-density fuel plates fabrication

Description: Progress has continued on the fabrication of fuel plates with fuel zone loadings approaching 9gU/cm{sup 3}. Using Hot Isostatic Pressing (HIPping) successful diffusion bonds have been made with 110 Al and 6061 Al alloys. These bonds demonstrated the most critical processing step for proof-of-concept hardware. Two types of prototype highly-loaded fuel plates have been fabricated. First, a fuel plate in which 0.030 in. (0.76 mm) uranium compound wires are bonded within an aluminum cladding and se… more
Date: September 1, 1989
Creator: Wiencek, T.C.; Domagala, R.F. & Thresh, H.R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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