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Severe accident testing of electrical penetration assemblies

Description: This report describes the results of tests conducted on three different designs of full-size electrical penetration assemblies (EPAs) that are used in the containment buildings of nuclear power plants. The objective of the tests was to evaluate the behavior of the EPAs under simulated severe accident conditions using steam at elevated temperature and pressure. Leakage, temperature, and cable insulation resistance were monitored throughout the tests. Nuclear-qualified EPAs were produced from D. … more
Date: November 1, 1989
Creator: Clauss, D.B. (Sandia National Labs., Albuquerque, NM (USA))
Partner: UNT Libraries Government Documents Department
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Simmer analysis of prompt burst energetics experiments

Description: The Prompt Burst Energetics experiments are designed to measure the pressure behavior of fuel and coolant as working fluids during a hypothetical prompt burst disassembly in an LMFBR. The work presented in this report consists of a parametric study of PBE-5S, a fresh oxide fuel experiment, using SIMMER-II. The various pressure sources in the experiment are examined, and the dominant source identified as incondensable contaminant gasses in the fuel. The important modeling uncertainties and limit… more
Date: March 1, 1982
Creator: Hitchcock, J.T.
Partner: UNT Libraries Government Documents Department
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D9 experiment: heat removal from stratified UO/sub 2/ debris

Description: The D9 experiment investigated the coolability of a shallow (77 mm), stratified urania bed in sodium. The bed was fission heated in the Annular Core Research Reactor (ACRR) at Sandia National Laboratories to simulate the effects of radioactive decay heating. It was the first stratified debris bed experiment to use an extended UO/sub 2/ particle size distribution (0.038 to 4.0 mm). Dryout occurred at powers ranging from 0.10 to 0.58 W/g, which was close to the incipient boiling power and before … more
Date: April 1, 1985
Creator: Ottinger, C A; Mitchell, G W; Lipinski, R J & Kelly, J E
Partner: UNT Libraries Government Documents Department
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Analysis of fission-product effects in a Fast Mixed-Spectrum Reactor concept

Description: The Fast Mixed-Spectrum Reactor (FMSR) concept has been proposed by BNL as a means of alleviating certain nonproliferation concerns relating to civilian nuclear power. This breeder reactor concept has been tailored to operate on natural uranium feed (after initial startup), thus eliminating the need for fuel reprocessing. The fissile material required for criticality is produced, in situ, from the fertile feed material. This process requires that large burnup and fluence levels be achievable, w… more
Date: February 1, 1980
Creator: White, J.R. & Burns, T.J.
Partner: UNT Libraries Government Documents Department
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Annular Core Pulse Reactor Upgrade. Quarterly report, April--June 1977

Description: The object of the ACPR upgrade is to arrive at a reactor modification which will provide an increased pulsed neutron fluence in the irradiation cavity without an excessive degradation of the pulse duration. The upgraded reactor will also have an increased steady-state neutron flux. The initial approach to the upgrade modification involved a two-region core concept. Progress is reported for the following tasks: (1) safety, documentation, and compliance; (2) core nuclear design; (3) console devel… more
Date: September 1, 1977
Partner: UNT Libraries Government Documents Department
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Annular core pulse reactor upgrade quarterly report, July--September 1976

Description: The object of the ACPR Upgrade is to arrive at a reactor modification which will provide an increased pulsed neutron fluence in the irradiation cavity without an increased degradation of the pulse duration. The upgraded reactor will also have an increased steady-state neutron flux. The approach to the upgrade modification involves a two-region core concept. The inner region, surrounding the irradiation cavity, consists of a high-heat-capacity fuel which will sustain a large fission energy depos… more
Date: January 1, 1977
Partner: UNT Libraries Government Documents Department
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Annular Core Pulse Reactor upgrade quarterly report, January--March 1977

Description: Information is presented concerning safety, compliance, and documentation; core nuclear design; ACPR upgrade and console development; mechanical design; fuel element design; fuel element fabrication; secondary fuel materials studies; driver core fuel element; and diagnostic system.
Date: June 1, 1977
Creator: Walker, J. V.
Partner: UNT Libraries Government Documents Department
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Fuel cycle analysis of once-through nuclear systems.

Description: Once-through fuel cycle systems are commercially used for the generation of nuclear power, with little exception. The bulk of these once-through systems have been water-cooled reactors (light-water and heavy water reactors, LWRs and HWRs). Some gas-cooled reactors are used in the United Kingdom. The commercial power systems that are exceptions use limited recycle (currently one recycle) of transuranic elements, primarily plutonium, as done in Europe and nearing deployment in Japan. For most of … more
Date: August 10, 2010
Creator: Kim, T. K.; Taiwo, T. A. & Division, Nuclear Engineering
Partner: UNT Libraries Government Documents Department
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Power generation costs for alternate reactor fuel cycles

Description: The total electric generating costs at the power plant busbar are estimated for various nuclear reactor fuel cycles which may be considered for power generation in the future. The reactor systems include pressurized water reactors (PWR), heavy-water reactors (HWR), high-temperature gas cooled reactors (HTGR), liquid-metal fast breeder reactors (LMFBR), light-water pre-breeder and breeder reactors (LWPR, LWBR), and a fast mixed spectrum reactor (FMSR). Fuel cycles include once-through, uranium-o… more
Date: September 1, 1980
Creator: Smolen, G.R. & Delene, J.G.
Partner: UNT Libraries Government Documents Department
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Measurement of neutron spectra in varied environments by the foil-activation method with arbitrary trials

Description: Neutron spectra have been measured by the foil-activation method in 13 different environments in and around the Sandia Pulsed Reactor, the White Sands Missile Range Fast Burst Reactor, and the Sandia Annular Core Research Reactor. The spectra were obtained by using the SANDII code in a manner that was not dependent on the initial trial. This altered technique is better suited for the determination of spectra in environments that are difficult to predict by calculation, and it tends to reveal fe… more
Date: December 1, 1987
Creator: Kelly, John G. & Vehar, David W.
Partner: UNT Libraries Government Documents Department
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Prompt burst energetics experiments: fresh oxide/sodium series

Description: A series of in-pile experiments has been performed to provide information on thermal energy to work conversion under prompt burst excursion (PBE) conditions. These consisted of single pin tests using fresh uranium oxide or uranium carbide fuel in a capsule geometry, with either stagnant sodium or helium in the coolant channel. The experiments were irradiated with single or double pulses in the Annular Core Pulse Reactor (ACPR) to provide energy depositions up to 2900 J/g. This report covers the… more
Date: August 1, 1978
Creator: Reil, K.O. & Young, M.F.
Partner: UNT Libraries Government Documents Department
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Fast-Mixed Spectrum Reactor progress report. Results of the FMSR Benchmark calculations and an assessment of current fission product libraries

Description: As part of the Initial Feasibility Study of the Fast Mixed Spectrum Reactor, a series of benchmark calculations were made to determine the sensitivity of the physics analysis to differences in methods and data. Argonne National Laboratory (ANL), the Massachusetts Institute of Technology (MIT), and Oak Ridge National Laboratory (ORNL) were invited to participate with Brookhaven National Laboratory in the analysis of a FMSR model prescribed by BNL. Detailed comparisons are made including a compre… more
Date: June 1, 1980
Creator: Ludewig, H.; Durston, C.; Atefi, B. & Cerbone, R.J.
Partner: UNT Libraries Government Documents Department
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Electrical equipment performance under severe accident conditions (BWR/Mark 1 plant analysis): Summary report

Description: The purpose of the Performance Evaluation of Electrical Equipment during Severe Accident States Program is to determine the performance of electrical equipment, important to safety, under severe accident conditions. In FY85, a method was devised to identify important electrical equipment and the severe accident environments in which the equipment was likely to fail. This method was used to evaluate the equipment and severe accident environments for Browns Ferry Unit 1, a BWR/Mark I. Following t… more
Date: September 1, 1986
Creator: Bennett, P.R.; Kolaczkowski, A.M. & Medford, G.T.
Partner: UNT Libraries Government Documents Department
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Fast Reactor Safety Research Program. Quarterly report, January--March 1977. [LMFBR excursions, meltdown debris bed, sodium containment, and fuel motion detection]

Description: Progress is summarized in the following study areas: accident energetics; core debris behavior; sodium containment and structural integrity; research for elevated temperature design criteria; fuel motion detection; and ACPR fuel motion detection system.
Date: August 1, 1977
Partner: UNT Libraries Government Documents Department
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Fast-mixed spectrum reactor. Progress report for 1980

Description: Reactor physics, fuel cycle, thermal-hydraulics and fuel cycle cost studies have been performed for this concept and are reported. The most serious drawback of previous FMSR designs, namely the level of irradiation damage to the stainless steel of the cladding and duct materials, has been greatly reduced by the new design. The peak fuel burnup level is also reduced. Work continued on earlier FMSR designs, and in particular, the centrally-moderated FMSR. Emphasis was placed on defining the first… more
Date: October 1, 1980
Creator: Fischer, G. J.; Galperin, A.; Shenoy, S. & Atefi, B.
Partner: UNT Libraries Government Documents Department
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Fast-Mixed Spectrum Reactor. Progress report for 1979

Description: This report summarizes the progress of the Fast Mixed Spectrum Reactor (FMSR) since the publication of the Interim Report in January 1979. The FMSR program was initiated to determine the feasibility of a breeder reactor concept which operated on a once-through-and-store fuel cycle and for which the only feed would be natural uranium. A first or startup core enriched to a maximum of about eleven percent in uranium-235 would be required. The concept has excellent antiproliferation advantages. In … more
Date: May 1, 1980
Creator: Fischer, G. J. & Cerbone, R. J.
Partner: UNT Libraries Government Documents Department
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Formulation and experimental evaluation of closed-form control laws for the rapid maneuvering of reactor neutronic power

Description: This report describes both the theoretical development and the experimental evaluation of a novel, robust methodology for the time-optimal adjustment of a reactor's neutronic power under conditions of closed-loop digital control. Central to the approach are the MIT-SNL Period-Generated Minimum Time Control Laws' which determine the rate at which reactivity should be changed in order to cause a reactor's neutronic power to conform to a specified trajectory. Using these laws, reactor power can be… more
Date: September 1, 1989
Creator: Bernard, John A.
Partner: UNT Libraries Government Documents Department
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Browns Ferry waste heat greenhouse environmental control system design

Description: Oak Ridge National Laboratory, Tennessee Valley Authority and the Environmental Research Laboratory at the University of Arizona cooperated on the design of an experimental greenhouse located at TVA's Browns Ferry Nuclear Generating Station. Two greenhouse zones are heated by waste heat from the plant's condenser effluent. For comparison, a third greenhouse zone is heated conventionally (fossil-fueled burners) as a control. Design specifics for each of the three zones and a qualitative operatin… more
Date: March 1, 1980
Creator: Olszewski, M.; Stovall, T. K.; Hicks, N. G.; Pile, R. S.; Burns, E. R. & Waddell, E. L., Jr.
Partner: UNT Libraries Government Documents Department
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