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Data acquisition and control system for the K/sub 1C/-HSST experiments at the ORR

Description: Major components and primary functions of the process control system for the K/sub 1C/-HSST irradiation experiments at the Oak Ridge Research (ORR) are described. Information relative to methodology for integrating unique features of the Digital Equipment Corporation's RSX-11M Operating System with analog-to-digital and digital-to-analog hardware is presented. In particular, data flow among various real-time applications programs relative to system hardware is presented. General features of the temperature control algorithm are presented, and results that illustrate the spatial temperature distribution in the capsule achieved by the control system are included.
Date: January 1, 1984
Creator: Miller, L.F. & Hobbs, R.W.
Partner: UNT Libraries Government Documents Department

Advanced gas cooled nuclear reactor materials evaluation and development program. Progress report, January 1, 1979-March 31, 1979

Description: This report presents the results of work performed from January 1, 1979 through March 31, 1979 on the Advanced Gas Cooled Nuclear Reactor Materials Evaluation and Development Program. The objectives of this program are to evaluate candidate alloys for Very High Temperature Reactor (VHTR) Nuclear Process Heat (NPH) and Direct Cycle Helium Turbine (DCHT) applications, in terms of the effect of simulated reactor primary coolant (helium containing small amounts of various other gases), high temperatures, and long time exposures, on the mechanical properties and structural and surface stability of selected candidate alloys. Work covered in this report includes the activities associated with the creep-rupture testing of the test materials for the purpose of verifying the stresses selected for the screening creep test program, and the status of the simulated reactor helium supply system, testing equipment, and gas chemistry analysis instrumentation and equipment.
Date: July 19, 1979
Partner: UNT Libraries Government Documents Department

Oak Ridge Research Reactor quarterly report, July, August, and September of 1977

Description: The ORR operated at an average power level of 29.5 MW for 23.4% of the time during July, August, and September of 1977. Three fuel elements were declared spent (60.7% burnup) during the quarter, while five new elements were placed in service. The reactor was shut down on seven occasions, none of which were unscheduled. Reactor downtime needed for refueling, maintenance and checks was quite low, with the reactor remaining available for operation 86.5% of the time. Maintenance activities, both mechanical and instrument were essentially routine in nature. In-service inspections completed during the quarter included inspection of the ORR primary heat exchanger No. 2.
Date: January 1, 1978
Creator: Hurt, S.S. III & Lance, E.D.
Partner: UNT Libraries Government Documents Department

Los Alamos Omega West Reactor

Description: A description is given of the Omega West Reactor and associated experimental facilities, followed by a brief discussion of recent usage, new experiments, and future prospects.
Date: January 1, 1983
Creator: Lyle, A.R.; Williams, H.T. & Bunker, M.E.
Partner: UNT Libraries Government Documents Department

Oak Ridge research reactor. Quarterly report, April-June 1979

Description: The ORR operated at an average power level of 29.9 MW for 77.9% of the time during April, May, and June of 1979. The reactor was shut down on seven occasions, two of which were unscheduled. Reactor downtime needed for refueling, maintenance and checks was normal, with the reactor remaining available for operation 86.5% of the time. Maintenance activities, both mechanical and instrument, were essentially routine in nature.
Date: December 1, 1979
Creator: Hurt, S.S. III & Lance, E.D.
Partner: UNT Libraries Government Documents Department

Oak Ridge Research Reactor quarterly report October, November and December of 1978

Description: The ORR operated at an average power level of 29.0 MW for 80.9% of the time during October, November, and December of 1978. The reactor was shut down on fourteen occasions, four of which were unscheduled. Reactor downtime needed for refueling, maintenance and checks was normal, with the reactor remaining available for operation 92.2% of the time. Maintenance activities, both mechanical and instrument, were essentially routine in nature.
Date: May 1, 1979
Creator: Hurt, S.S. III & Lance, E.D.
Partner: UNT Libraries Government Documents Department

Oak Ridge Research Reactor quarterly report, January-March, 1979

Description: The ORR operated at an average power level of 28.9 MW for 84.2% of the time during January, February and March of 1979. The reactor was shut down on seventeen occasions, three of which were unscheduled. Reactor downtime needed for refueling, maintenance and checks was normal, with the reactor remaining available for operation 93.6% of the time. Maintenance activities, both mechanical and instrument, were essentially routine in nature with the exception of one mechanical design change. Special tests or measurements completed during the quarter included: (1) preliminary measurements for the LWR Pressure Vessel Irradiation Program; (2) flux mapping for Core No. 148-A; and (3) calibration of all six shim rods.
Date: October 1, 1979
Creator: Hurt, S.S. III & Lance, E.D.
Partner: UNT Libraries Government Documents Department

Oak Ridge Research Reactor quarterly report, April, May, and June 1981

Description: The ORR operated at an average power level of 29.8 MW for 90.7% of the time during April, May, and June 1981. The reactor was shut down on eight occasions, one of which was unscheduled. Reactor downtime needed for refueling, maintenance, and checks was normal, with the reactor remaining available for operation 91.6% of the time. Maintenance activities, both mechanical and instrument, were essentially routine in nature. In-service inspection completed during the quarter is described.
Date: January 1, 1982
Creator: Hurt, S.S. III & Lance, E.D.
Partner: UNT Libraries Government Documents Department

Oak Ridge research reactor. Quarterly report, January, February, and March 1981

Description: The ORR operated at an average power level of 27.9 MW for 88.9% of the time during January, February, and March of 1981. The reactor was shut down on seventeen occasions, seven of which were unscheduled. Reactor downtime needed for refueling, maintenance, and checks was normal, with the reactor remaining available for use 92.6% of the time. Maintenance activities, both mechanical and instrument, were essentially routine in nature with the exception of one Reactor Instrumentation and Controls Design Change Memo and one Mechanical Design Change Memo. Special tests or measurements completed during this quarter are reported in a summary entitled, ORR Reactivity and Flux Comparisons between a 280 g, 45 Weight Percent Enriched Texas Instrument Fuel Element and a 265 g Standard 93 Weight Percent Enriched Texas Instrument Fuel Element.
Date: January 1, 1982
Creator: Hurt, III, S. S. & Lance, E. D.
Partner: UNT Libraries Government Documents Department

Oconee 1, cycle 5 design report

Description: The Oconee 1, cycle 5 fuel cycle was designed to irradiate five fuel assemblies to a burnup of approximately 40,000 MWd/mtU. The fuel cycle design was performed using standard Babcock and Wilcox calculational techniques for nuclear fuel cycles. All applicable design criteria were satisfied. Valuable experimental data on the performance characteristics of high-burnup fuel assemblies will be obtained from these assemblies in subsequent post-irradiation examinations.
Date: May 1, 1979
Creator: Coleman, T.A. (ed.)
Partner: UNT Libraries Government Documents Department

Army Gas-Cooled Reactor Systems program: alternator final design report

Description: The development and testing of a demonstration brushless alternator for the ML-1 mobile nuclear power plant is described. The brushless concept was selected after it became apparent that a conventional power generator could not satisfy the ML-1 weight and size requirements. The demonstration alternator fabricated and tested under this program did not meet all performance specifications; the efficiency was low and the unit could not be operated for significant periods of time without overheating. However, a large body of useful data was accumulated during the extensive development program. Of special interest are data on the rotor and stator design, the cooling requirements and on the distribution of eddy current losses. Analysis of the data indicates that a brushless alternator, only slightly larger and heavier than was specified for the ML-1, could be developed with a modest additional effort.
Date: June 1, 1964
Partner: UNT Libraries Government Documents Department

Oak Ridge Research Reactor quarterly report, January, February, and March of 1978

Description: The ORR operated at an average power level of 28.7 MW for 73.4 percent of the time during January, February, and March of 1978. Eight new fuel elements were placed in service. The reactor was shut down on sixteen occasions, one of which was unscheduled. Reactor downtime needed for refueling, maintenance and checks was quite low, with the reactor remaining available for operation 88.9 percent of the time. Maintenance activities, both mechanical and instrument were essentially routine in nature. Special tests or measurements completed during the quarter included: (1) reactivity measurement of the Metals and Ceramics Division's (ORR-MFE-1) experiment in CP-C7; (2) flux mapping for core No. 143-B; and (3) calibration of all six shim rods on February 12, 1978 (Appendix A), and calibration of shim rods Nos. 2 through 6 on February 16, 1978.
Date: July 1, 1978
Creator: Hurt, S.S. III & Lance, E.D.
Partner: UNT Libraries Government Documents Department

Oak Ridge research reactor quarterly report, January, February, and March of 1980

Description: The ORR operated at an average power level of 29.9 MW for 91.3% of the time during January, February, and March of 1980. The reactor was shut down on twelve occasions, six of which were unscheduled. Reactor downtime needed for refueling, maintenance and checks was normal, with the reactor remaining available for use 93.7% of the time. Maintenance activities, both mechanical and instrument, were essentially routine in nature with the exception of one Reactor Instrument and Controls Design Change Memo.
Date: October 1, 1980
Creator: Hurt, S.S. III & Lance, E.D.
Partner: UNT Libraries Government Documents Department

Oak Ridge Research Reactor quarterly report, April, May, and June of 1978

Description: The ORR operated at an average power level of 27.8 MW for 72.6% of the time during April, May, and June of 1978. The reactor was shut down on fifteen occasions, two of which were unscheduled. Reactor downtime needed for refueling, maintenance and checks was higher than normal due to beam-hole-plug maintenance, with the reactor remaining available for operation 82.4% of the time. Maintenance activities, both mechanical and instrument, were essentially routine in nature. Special tests or measurements completed during the quarter included gamma flux (heating) measurements made in core positions E-7, E-5, E-3, and C-7 using lattice configurations as indicated in figure Nos. 5, 6, 7, 8, 9, and 10.
Date: December 1, 1978
Creator: Hurt, III, S. S. & Lance, E. D.
Partner: UNT Libraries Government Documents Department

Oak Ridge Research Reactor quarterly report, July--September 1975

Description: The ORR operated at an average power level of 29.8 Mw for 87.2 percent of the time during July, August, and September of 1975. Twenty-eight fuel elements were declared spent (51.5 percent average burnup) during the quarter, while forty-two new elements were placed in service. Two shim-rod elements were retired from service at an average burnup of 65.5 percent. The reactor was shut down on eight occasions, one of which was unscheduled. One end-of-cycle shutdown accounted for 49.6 percent of the total downtime. A special shutdown to repair a water leak accounted for 40.6 percent of the total downtime. The remaining downtime was used principally for refueling, experiment work, and maintenance. Maintenance activities, both mechanical and instrument, were essentially routine in nature. All six shim rods were calibrated on August 18, 1975.
Date: April 1, 1976
Creator: Hurt, S. S. III & Lance, E. D.
Partner: UNT Libraries Government Documents Department

Oak Ridge Research Reactor quarterly report April, May, and June of 1976

Description: The ORR reactor operated at an average power level of 29.7 MW for 90 percent of the time during April, May, and June of 1976. Twenty-five fuel elements were declared spent (52.3 percent average burnup) during the quarter, while twenty-five new elements were placed in service. Two shim-rod elements were retired from service at an average burnup of 62.5 percent. The reactor was shut down on thirteen occasions, four of which were unscheduled. One end-of-cycle shutdown accounted for 61.1 percent of the total downtime. The remaining downtime was used principally for refueling and experiment work. Maintenance activities, both mechanical and instrument, were essentially routine in nature. A special test completed during the quarter was the visual inspection of the poolside facility. Operating data are presented.
Date: November 1, 1976
Creator: Hurt, S. S. III & Lance, E. D.
Partner: UNT Libraries Government Documents Department

Oak Ridge research reactor quarterly report, January, February, and March of 1976

Description: The ORR operated at an average power level of 29.9 Mw for 82.8 percent of the time during January, February, and March of 1976. Two fuel elements were declared spent (58.8 percent average burnup) during the quarter, while twenty-eight new elements were placed in service. Four shim-rod elements were retired from service at an average burnup of 64.4 percent. The reactor was shutdown on nine occasions, one of which was unscheduled. Two end-of-cycle shutdowns accounted for 92.1 percent of the total downtime. The remaining downtime was used principally for refueling and experiment work. Maintenance activities, both mechanical and instrument, were essentially routine in nature. Special tests or measurements completed during the quarter were three calorimeter gamma heating runs made in CP-E5 during the end of Cycle 129 shutdown.
Date: October 1, 1976
Creator: Hurt, S. S. III & Lance, E. D.
Partner: UNT Libraries Government Documents Department

Oak Ridge research reactor quarterly report, October, November, and December of 1975

Description: The ORR operated at an average power level of 29.9 Mw for 84.9 percent of the time during October, November, and December of 1975. Eleven fuel elements were declared spent (52.5 percent average burnup) during the quarter, while twenty-nine new elements were placed in service. Four shim-rod elements were retired from service at an average burnup of 63 percent. The reactor was shut down on eight occasions, all of which were scheduled. Two end-of-cycle shutdowns accounted for 80.7 percent of the total downtime. The remaining downtime was used principally for refueling and experiment work. Maintenance activities, both mechanical and instrument, were essentially routine in nature. Special tests or measurements during the quarter included: (1) Flux mapping for core No. 129A; (2) Determination of minimum fuel content in ORR fuel elements prior to declaring the element spent; (3) Reactor vessel, ultrasonic test, and (4) Visual inspection of ORR primary pump.
Date: July 1, 1976
Creator: Hurt, S. S. III & Lance, E. D.
Partner: UNT Libraries Government Documents Department

Oak Ridge Research Reactor quarterly report, October, November, and December of 1976

Description: The ORR operated at an average power level of 29.3 Mw for 20.1% of the time during October, November, and December of 1976. The operating time is low due to the reduction of operating time to a level compatible with funding. Six fuel elements were declared spent (57.6% burnup) during the quarter, while no new elements were placed in service. The reactor was shut down on seven occasions, one of which was unscheduled. Reactor downtime needed for refueling, maintenance and checks was quite low, with the reactor remaining available for operation 92.0% of the time. Maintenance activities, both mechanical and instrument, were essentially routine in nature.
Date: June 1, 1977
Creator: Hurt, III, S. S. & Lance, E. D.
Partner: UNT Libraries Government Documents Department

Oak Ridge Research Reactor quarterly report, July, August, and September of 1976

Description: The ORR operated at an average power level of 29.8 Mw for 50.9 percent of the time during July, August, and September of 1976. One fuel element was declared spent (62.4 percent burnup) during the quarter, while five new elements were placed in service. Two shim-rod elements were retired from service at an average burnup of 69.0 percent. The reactor was shut down on twelve occasions, all of which were scheduled. Reactor downtime needed for refueling, maintenance and checks was quite low, with the reactor remaining available for operation 95.5 percent of the time. Maintenance activities, both mechanical and instrument were essentially routine in nature. In-service inspections completed during the quarter included: (1) inspection of the decay tank strainer on 9-21-76, and (2) inspection of the reactor primary heat exchanger No. 3, secondary side, on 9-24-76.
Date: March 1, 1977
Creator: Hurt, III, S. S. & Lance, E. D.
Partner: UNT Libraries Government Documents Department

Oak Ridge Research Reactor quarterly report, January--March 1977

Description: The ORR operated at an average power level of 29.2 Mw for 23.6% of the time during January, February, and March of 1977. Six fuel elements were declared spent (56.3% burnup) during the quarter, while five new elements were placed in service. The reactor was shut down on seven occasions, none of which were unscheduled. Reactor downtime needed for refueling, maintenance and checks was quite low, with the reactor remaining available for operation 87.0% of the time. Maintenance activities, both mechanical and instrument, were essentially routine in nature.
Date: August 1, 1977
Creator: Hurt, III, S. S. & Lance, E. D.
Partner: UNT Libraries Government Documents Department

Technical evaluation of the proposed technical specification change for the Arkansas Nuclear Power Station, Unit 2

Description: This report documents the technical evaluation of the request for changes in the Technical Specifications for the Arkansas Nuclear Power Station, Unit 2. These changes were proposed by the licensee in a letter dated November 27, 1979. The basis for review included a report entitled Determination of Plant System Trip Setpoints Valves. The requested changes to the Technical Specifications were found to be acceptable based on information submitted by the licensee.
Date: August 1, 1980
Creator: Victor, Richard A.
Partner: UNT Libraries Government Documents Department

Extended burnup core management for once-through uranium fuel cycles in LWRS. First annual report for the period 1 July 1979-30 June 1980

Description: Detailed core management arrangements are developed requiring four operating cycles for the transition from present three-batch loading to an extended burnup four-batch plan for Zion-1. The ARMP code EPRI-NODE-P was used for core modeling. Although this work is preliminary, uranium and economic savings during the transition cycles appear of the order of 6 percent.
Date: August 1, 1980
Creator: Sesonske, A.
Partner: UNT Libraries Government Documents Department

Fuel-performance-improvement program. Semiannual progress report, October 1980-March 1981. [Sphere-pac and annular-coated-pressurized]

Description: Progress on the Fuel Performance Improvement Program's fuel test and demonstration irradiations is reported for the period of October 1980-March 1981. The purpose of the program is to test and demonstrate improved light water reactor fuel concepts that are more resistant to failure from pellet-cladding interaction during power increases than standard pellet fuel. This would also offer extended burnup potential and, hence, improved uranium utilization.
Date: April 1, 1981
Creator: Crouthamel, C E & Freshley, M D
Partner: UNT Libraries Government Documents Department