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Low enrichment fuel conversion for Iowa State University

Description: Work during the reported period was centered primarily in preparation for receiving the LEU fuel and the shipping of the HEU fuel. The LEU fuel has not been received. The HEU fuel assemblies for the UTR-10 reactor will not fit into any current research reactor shipping containers; therefore, the fuel assemblies must be disassembled and the fuel shipped as fuel plates. Procedures and practices have been developed so that the fuel assemblies will be disassembled in a shielded environment.
Date: August 1, 1990
Creator: Rohach, A.F. & Hendrickson, R.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Improving the resolution of chopper spectrometers at pulsed neutron sources

Description: We examine the relationships between intensity and resolution in pulsed-source chopper spectrometers, including the effects of Soller collimation, narrower rotor slits and higher rotor speeds. The basis is a simplified description of a spectrometer, approximately optimizing the rotor pulse and lighthouse effects. the analysis includes a new treatment of the angular distribution transmitted through a system consisting of a coarse collimator and a Soller collimator. The results encourage the pros… more
Date: January 1, 1990
Creator: Carpenter, J.M. (Argonne National Lab., IL (USA)) & Mildner, D.F.R. (National Bureau of Standards, Washington, DC (USA). Center for Analytical Chemistry)
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Partner: UNT Libraries Government Documents Department
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High threshold HR (highly reflective) coatings at 1064 nm

Description: We have conducted as extensive series of laser damage measurements on highly reflective (HR) dielectric coatings which have yielded 1064-nm thresholds as high as 40 J/cm{sup 2} for 8- to 10-ns pulses at pulse-repetition frequencies (PRF) of 10 Hz. Moreover, by laser conditioning these coatings with subthreshold pulses, the thresholds of some coatings were raised to levels exceeding 70 J/cm{sup 2}. These are the highest threshold dielectric HR coatings that we have tested in this regime. The coa… more
Date: December 17, 1990
Creator: Rainer, F.; DeMarco, F. P.; Hunt, J. T.; Morgan, A. J.; Mott, L. P.; Marcelja, F. et al.
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Partner: UNT Libraries Government Documents Department
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RELAP5 modeling of a Savannah River Site reactor

Description: Thermal-hydraulic system analysis in support of Savannah River Site reactor restart is being performed with a modified version of RELAP5/MOD2.5. This paper gives an overview of the Savannah River Site reactor system, the RELAP5 input models developed for the analysis, and the specific phenomena with which the code is having difficulty. The need for code development to address plenum phenomena, air/water behavior, fuel assembly behavior, and degraded pump performance is motivated in terms of the… more
Date: January 1, 1990
Creator: Dimenna, R.A. (Westinghouse Savannah River Co., Aiken, SC (USA)) & Caraher, D.L. (EG and G Idaho, Inc., Idaho Falls, ID (USA))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Janus Upgrade using brewster angle disk amplifier technology. [Janus laser system]

Description: The Nuclear Test and Experimental Science Program (NTES) has requested that the Laser Program design and price an upgrade to the Janus laser system (JANUS UPGRADE) capable of reliably delivering in excess of 200 joules per beamline in a range of pulse forms to three experiment areas. The facility is to have the following characteristics: three experiment areas, two high energy beams, each with 200--400 joule/1 ns at a wavelength of 1.053 or 1.064 microns, and 125--250 J/1 ns when frequency doub… more
Date: October 24, 1990
Creator: Hunt, J.; Boben, R.; Blocker, R.; Clark, J.; Henesian, M.; Victoria, J. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Adaptation of the IBM ECR (electric cantilever robot) robot to plutonium processing applications

Description: The changing regulatory climate in the US is adding increasing incentive to reduce operator dose and TRU waste for DOE plutonium processing operations. To help achieve that goal the authors have begun adapting a small commercial overhead gantry robot, the IBM electric cantilever robot (ECR), to plutonium processing applications. Steps are being taken to harden this robot to withstand the dry, often abrasive, environment within a plutonium glove box and to protect the electronic components again… more
Date: December 1, 1990
Creator: Armantrout, G. A.; Pedrotti, L. R. (Lawrence Livermore National Lab., CA (USA)); Halter, E. A. & Crossfield, M. (International Business Machines Corp., Armonk, NY (USA))
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Partner: UNT Libraries Government Documents Department
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Simplified containment event tree analysis for the Sequoyah Ice Condenser containment

Description: An evaluation of a Pressurized Water Reactor (PWR) ice condenser containment was performed. In this evaluation, simplified containment event trees (SCETs) were developed that utilized the vast storehouse of information generated by the NRC's Draft NUREG-1150 effort. Specifically, the computer programs and data files produced by the NUREG-1150 analysis of Sequoyah were used to electronically generate SCETs, as opposed to the NUREG-1150 accident progression event trees (APETs). This simplificatio… more
Date: December 1, 1990
Creator: Galyean, W. J.; Schroeder, J. A. & Pafford, D. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Graded Al sub x Ga sub 1-x as photoconductive devices for high efficiency picosecond optoelectronic switching

Description: Picosecond photoconductivity has been achieved for a variety of semiconductor materials by techniques which have now become almost standard. Enhanced scattering by the excessive amount of deep level defects which provide for picosecond recombination lifetimes significantly reduce the mobility, degrading the responsivity of the photoconductor. This paper will present a concept where improved responsivity is achievable by utilizing a graded bandgap Al{sub x}Ga{sub 1-x}As active detecting layer gr… more
Date: October 1, 1990
Creator: Morse, J.D.; Mariella, R.P. (Lawrence Livermore National Lab., CA (USA)) & Dutton, R.W. (Stanford Univ., CA (USA). Center for Integrated Systems)
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Partner: UNT Libraries Government Documents Department
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Recent laser experiments on the Aurora KrF/ICF laser system

Description: The Aurora KrF/ICF Laser Facility at Los Alamos is operational at the kilojoule-level for both laser and target experiments. We report on recent laser experiments on the system and resulting system improvements. 3 refs., 4 figs.
Date: January 1, 1990
Creator: Turner, T. P.; Jones, J. E.; Czuchlewski, S. J.; Watt, R. G.; Thomas, S. J.; Kang, M. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Iridium alloy clad vent set manufacturing qualification studies

Description: In 1987 the Department of Energy-Office of Special Applications (DOE-OSA) decided to transfer the iridium alloy Clad Vent Set (CVS) manufacturing for the General Purpose Heat Source (GPHS) program from EG G Mound Applied Technologies, Inc. (EG G-MAT) to the Oak Ridge Y-12 Plant operated by Martin Marietta Energy Systems, Inc. (Energy Systems). The reason for this transfer was to consolidate the GPHS program iridium hardware manufacturing. The CVS starting stock of iridium powder, foil, and blan… more
Date: June 15, 1990
Creator: Ulrich, G.B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Bearing staking process investigation using a designed experiment

Description: A designed experiment was performed on the staking operation of a miniature precision bearing. Three variables were controlled during the experiment: staking force, tool diameter, and bearing-to-wheel fit. The study showed that the current staking tool diameter is highly sensitive to staking force and to bearing-to-wheel fit, whereas a smaller diameter tool is not. The study also shows that, with the current process, bearing movement under a 100-Newton (N) force can be estimated at 0.009 in. to… more
Date: December 21, 1990
Creator: Armstrong, K.P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Collaborative research on fluidization employing computer-aided particle tracking

Description: This report covers the sixth quarter of the subject contract. The primary objective of this quarter was modifying the software and testing the hardware of the transportable computer-aided particle tracking apparatus to be used at the Morgantown Energy Technology Center. While the data acquisition programs have been described in the last report, the program names were changed and the method for input to these programs was modified for convenient use. The hardware settings and arrangement were ch… more
Date: January 1, 1990
Creator: Chen, M.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Design-development and operation of the Experimental Boiling-Water Reactor (EBWR) facility, 1955--1967

Description: The Experimental Boiling-Water Reactor (EBWR) was designed, built, and operated to provide experience and engineering data that would demonstrate the feasibility of the direct-cycle, boiling-water reactor and be applicable to improved, larger nuclear power stations; and was based on information obtained in the first test boiling-water reactors, the BORAX series. EBWR initially produced 20 MW(t), 5 MW(e); later modified and upgraded, as described and illustrated, it was operated at up to 100 MW(… more
Date: November 1, 1990
Creator: Boing, L.E.; Wimunc, E.A. & Whittington, G.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Information dynamics of self-programmable matter

Description: Using the simple observation that programs are identical to data, programs alter data, and thus programs alter programs, the authors have constructed a self-programming system based on a parallel von Neumann architecture. This system has the same fundamental property as living systems have: the ability to evolve new properties. They demonstrate how this constructive dynamical system is able to develop complex cooperative structures with adaptive responses to external perturbations. The experime… more
Date: January 1, 1990
Creator: Knudsen, C.; Feldberg, R. & Rasmussen, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Life extension of gas turbines used for power generation

Description: Gas turbines have traditionally been used by electric utilities to supplement generating capacity during peak demand periods. As they age, the utility is faced with the decision of either replacing the units to maintain a reliable source of generating capacity, or extending the life of the units through the use of improved maintenance and monitoring techniques. This paper discusses some of the considerations for extended life operation of gas turbines. To perform this study, actual operating an… more
Date: January 1, 1990
Creator: Lofaro, R. & Villaran, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Scrap Tire Utilization via Surface Modification

Description: Air Products and Chemicals, Inc. is developing a novel approach to reusing scrap tire rubber, which will be described in this presentation. In addition to consuming scrap tires, this technology represents a new approach to material engineering. Furthermore, this method of rubber recycle is most efficient in terms of energy recovery. 4 figs.
Date: January 1, 1990
Creator: Bauman, B. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Solar reforming of methane in a direct absorption catalytic reactor on a parabolic dish

Description: The concept of solar driven chemical reactions in a commercial-scale volumetric receiver/reactor on a parabolic concentrator was successfully demonstrated in the CAtalytically Enhanced Solar Absorption Receiver (CAESAR) test. Solar reforming of methane (CH{sub 4}) with carbon dioxide (CO{sub 2}) was achieved in a 64-cm diameter direct absorption reactor on a parabolic dish capable of 150 kW solar power. The reactor was a catalytic volumetric absorber consisting of a multi-layered, porous alumin… more
Date: January 1, 1990
Creator: Muir, J.F.; Hogan, R.E. Jr.; Skocypec, R.D. (Sandia National Labs., Albuquerque, NM (USA)) & Buck, R. (Deutsche Forschungsanstalt fuer Luft- und Raumfahrt e.V. (DLR), Stuttgart (Germany, F.R.). Inst. fuer Technische Thermodynamik)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Solar Total Energy Project final test report

Description: The Solar Total Energy Project (STEP), a cooperative effort between the United States Department of Energy (DOE) and Georgia Power Company (GPC) located at Shenandoah, Georgia, has undergone several design modifications based on experience from previous operations and test programs. The experiences encountered were discussed in detail in the Solar Total Energy Project Summary Report'' completed in 1987 for DOE. Most of the proposed changes discussed in this report were installed and tested in 1… more
Date: September 1, 1990
Creator: Nelson, R. F.; Abney, L. O. & Towner, M. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Impact evaluation methods for the energy savings plan

Description: The Energy $avings Plan (E$P) is Bonneville Power Administration's (Bonneville) retrofit program for the industrial sector. The program pays incentives for energy conservation measures involving electrical energy efficiency improvements in manufacturing, processing, and refining industries. E$P is an outgrowth of the Industrial Test Program and the Sponsor-Designed Program, two programs offered by Bonneville that involved installing energy conservation measures in industrial firms. This paper w… more
Date: September 1, 1990
Creator: Spanner, G.E. (Pacific Northwest Lab., Richland, WA (USA)) & Riewer, S. (USDOE Bonneville Power Administration, Portland, OR (USA))
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Partner: UNT Libraries Government Documents Department
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Enhanced carbon influx into TFTR supershots

Description: Under some conditions, a very large influx of carbon into TFTR occurs during beam injection into low recycling plasmas (the Supershot regime). These carbon blooms'' result in serious degradation of plasma parameters. The sources of this carbon have been identified as hot spots on the TFTR bumper limiter at or near the last closed flux surface. Two separate temperature thresholds have been identified. One, at about 1650{degree}C, is consistent with radiation enhanced sublimation. The other, at a… more
Date: December 1, 1990
Creator: Ramsey, A.T.; Bush, C.E.; Dylla, H.F.; Owens, D.K.; Pitcher, C.S. & Ulrickson, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Ion source and injector improvements at the superHILAC

Description: Major improvements have been made on the Adam injector at the SuperHILAC heavy ion accelerator. Adam is a pressurized Cockcroft-Walton injector, typically run at voltages in excess of 2 MeV. The PIG ion source was redesigned to increase the length of the discharge column and the extraction slit, while remaining within the magnet poles of the source magnet. To maintain cooling, part of the thinner soft-iron end cap was replaced with a copper section, modifying the magnetic circuit. These modific… more
Date: September 1, 1990
Creator: Feinberg, B.; Behrsing, G.; Gavin, B.; Ryce, S.; Sihler, K. & Syversrud, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Experimental and theoretical studies of dense fluid mixtures

Description: During the first fifteen months of this grant, we carried out measurements of the speed of sound in R-134a, an environmentally safe refrigerant that is a leading candidate to replace R-12, which is widely used in refrigerators and air conditioners but causes depletion of the stratospheric ozone layer when it is released into the atmosphere. We also modified and improved our equipment for measuring interfacial tension in pure fluids and mixtures and prepared for a new set of measurements of inte… more
Date: November 1, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Artificial life: The coming evolution

Description: Within fifty to a hundred years a new class of organisms is likely to emerge. These organisms will be artificial in the sense that they will originally be designed by humans. However, they will reproduce, and will evolve into something other than their initial form; they will be alive'' under any reasonable definition of the word. These organisms will evolve in a fundamentally different manner than contemporary biological organisms, since their reproduction will be under at least partial consci… more
Date: January 1, 1990
Creator: Farmer, J.D. (Los Alamos National Lab., NM (USA) Santa Fe Inst., NM (USA)) & Belin, A.d'A. (Shute, Mihaly, and Weinberger, Santa Fe, NM (USA))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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