45 Matching Results

Search Results

Advanced search parameters have been applied.
in subjects: "Thermal Power Plants"  
Results: 1 - 24 next
open access

Distributed and hierarchical control techniques for large-scale power plant systems

Description: In large-scale systems, integrated and coordinated control functions are required to maximize plant availability, to allow maneuverability through various power levels, and to meet externally imposed regulatory limitations. Nuclear power plants are large-scale systems. Prime subsystems are those that contribute directly to the behavior of the plant's ultimate output. The prime subsystems in a nuclear power plant include reactor, primary and intermediate heat transport, steam generator, turbine … more
Date: August 1, 1985
Creator: Raju, G. V. S. & Kisner, R. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Nuclear power plant simulation facility evaluation methodology

Description: A methodology for evaluation of nuclear power plant simulation facilities with regard to their acceptability for use in the US Nuclear Regulatory Commission (NRC) operator licensing exam is described. The evaluation is based primarily on simulator fidelity, but incorporates some aspects of direct operator/trainee performance measurement. The panel presentation and paper discuss data requirements, data collection, data analysis and criteria for conclusions regarding the fidelity evaluation, and … more
Date: January 1, 1985
Creator: Haas, P.M.; Carter, R.J. & Laughery, K.R. Jr.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Analytical modeling techniques for efficient heat transfer simulation in nuclear power plant transients

Description: New integral methods are formulated which are suitable for efficient computer simulation of thermal conduction and convective heat transfer in large engineering systems such as nuclear power plants. The methods described here have been shown to produce, in a special-purpose minicomputer for complex system simulations, extremely high simulation speed and accuracy which is commensurate with that of instrumentation. 11 refs., 3 figs.
Date: January 1, 1985
Creator: Wulff, W.; Cheng, H.S. & Mallen, A.N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Nuclear power plant training simulator fidelity assessment

Description: The fidelity assessment portion of a methodology for evaluating nuclear power plant simulation facilities in regard to their appropriateness for conducting the Nuclear Regulatory Commission's operating test was described. The need for fidelity assessment, data sources, and fidelity data to be collected are addressed. Fidelity data recording, collection, and analysis are discussed. The processes for drawing conclusions from the fidelity assessment and evaluating the adequacy of the simulator con… more
Date: January 1, 1985
Creator: Carter, R.J. & Laughery, K.R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Use of logic flowgraph models in a computer aided process analysis and management system

Description: The development of a multi-function computer-aided process analysis and management (CAPAM) system, to be implemented in nuclear power plant control rooms, is proposed and discussed. The design goals identified for such a system are early disturbance detection and diagnosis, accompanied by identification of the best possible recovery actions or alternative success paths. The CAPAM structure is articulated in three functional levels with dedicated CRT displays. Increasing amount of diagnostic or … more
Date: July 1, 1985
Creator: Guarro, S. B. & Okrent, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Characterization of nuclear reactor containment penetrations. Final report

Description: This report concludes a preliminary report prepared by ANL for Sandia, published as NUREG/CR-3855, in June 1984. The preliminary report, NUREG/CR-3855, presented the results of a survey of nuclear reactor containment penetrations, covering the number of plants surveyed at that time (22 total). Since that time, an additional 26 plants have been included in the survey. This final report serves two purposes: (1) to add the summary data sheets and penetration details for the additional plants now i… more
Date: February 1, 1985
Creator: Shackelford, M. H.; Bump, T. R. & Seidensticker, R. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Report of the US Nuclear Regulatory Commission Piping Review Committee. Volume 2. Evaluation of seismic designs: a review of seismic design requirements for Nuclear Power Plant Piping

Description: This document reports the position and recommendations of the NRC Piping Review Committee, Task Group on Seismic Design. The Task Group considered overlapping conservation in the various steps of seismic design, the effects of using two levels of earthquake as a design criterion, and current industry practices. Issues such as damping values, spectra modification, multiple response spectra methods, nozzle and support design, design margins, inelastic piping response, and the use of snubbers are … more
Date: April 1, 1985
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Artificial intelligence and nuclear power. Report by the Technology Transfer Artificial Intelligence Task Team

Description: The Artificial Intelligence Task Team was organized to review the status of Artificial Intelligence (AI) technology, identify guidelines for AI work, and to identify work required to allow the nuclear industry to realize maximum benefit from this technology. The state of the nuclear industry was analyzed to determine where the application of AI technology could be of greatest benefit. Guidelines and criteria were established to focus on those particular problem areas where AI could provide the … more
Date: June 1, 1985
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Recommendations for NRC policy on shift scheduling and overtime at nuclear power plants

Description: This report contains the Pacific Northwest Laboratory's (PNL's) recommendations to the US Nuclear Regulatory Commission (NRC) for an NRC policy on shift scheduling and hours of work (including overtime) for control room operators and other safety-related personnel in nuclear power plants. First, it is recommended that NRC make three additions to its present policy on overtime: (1) limit personnel to 112 hours of work in a 14-day period, 192 hours in 28 days, and 2260 hours in one year… more
Date: July 1, 1985
Creator: Lewis, P.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Legionnaires' disease bacteria in power plant cooling systems: Phase 2

Description: Legionnaires' Disease Bacteria (Legionella) are a normal component of the aquatic community. The study investigated various environmental factors that affect Legionella profiles in power plant cooling waters. The results indicate that each of the four factors investigated (incubation temperature, water quality, the presence and type of associated biota, and the nature of the indigenous Legionella population) is important in determining the Legionella profile of these waters. Simple predictive r… more
Date: April 1, 1985
Creator: Tyndall, R.L.; Christensen, S.W. & Solomon, J.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Method to generate generic floor response spectra for operating nuclear power plant

Description: The general approach in the development of the response spectra was to study the effects on the dynamic characteristics of each of the elements in the chain of events that goes between the loads and the responses. This includes the loads, the soils and the structures. A free-field earthquake response spectra was used to generate horizontal earthquake time histories. The excitation was applied through the soil and into the various structures to produce responses in equipment. An entire range of … more
Date: January 1, 1985
Creator: Curreri, J.; Costantino, C.; Subudhi, M. & Reich, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Procedure for determining the SSE response from the OBE response. [Safe Shutdown Earthquake (SSE) and Operating Basis Earthquake (OBE)]

Description: Regulatory Guide 1.61 specifies the damping that should be used for all modes that are considered in an elastic spectral or time history dynamic seismic analysis of Seismic Category I components. Table 1 of R.G 1.61 specifies damping values for dynamic analysis for two different earthquakes, the Safe Shutdown Earthquake and the Operating Basis Earthquake. The guide specifies that ''...if the maximum stresses due to static, seismic and other dynamic loading are significantly lower than the yield… more
Date: January 1, 1985
Creator: Curreri, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Silica problem in the design of geothermal power plants

Description: The purpose of this study is to examine the silica problem from the perspective of the power plant designer and to develop a procedure to enable a quick estimate to be made of the potential seriousness of the silica deposition problem for a wide variety of resources and for selected types of power plant. The method employs correlations for the equilibrium solubilities of quartz and amorphous silica and for the saturated liquid enthalpy and the latent heat of water substance. Single- and double-… more
Date: February 1, 1985
Creator: DiPippo, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Testing of nuclear grade lubricants and their effects on A540 B24 and A193 B7 bolting materials

Description: An investigation was performed on eleven commonly used lubricants by the nuclear power industry. The investigation included EDS analysis of the lubricants, notched-tensile constant extension rate testing of bolting materials with the lubricants, frictional testing of the lubricants and weight loss testing of a bonded solid film lubricant. The report generally concludes that there is a significant amount of variance in the mechanical properties of common bolting materials; that MoS/sub 2/ can hy… more
Date: January 1, 1985
Creator: Czajkowski, C.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Assessment of potential wood supply for intermediate scale thermoconversion facilities, Tasks I, II, III

Description: The Department of Energy's Biomass Thermochemical Conversion Program has been concerned with the potential of wood biomass to contribute to the Nation's energy supply. One of the factors inhibiting the selection of wood biomass for energy by non-forest industries, especially by those requiring large quantities (500 to 2000 green tons per day), is concern with adequate fuel supply in terms of both a supply system and an adequate resource base. With respect to the latter, this report looks at the… more
Date: November 1, 1985
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electric energy supply systems: description of available technologies

Description: When comparing coal transportation with electric transmission as a means of delivering electric power, it is desirable to compare entire energy systems rather than just the transportation/transmission components because the requirements of each option may affect the requirements of other energy system components. PNL's assessment consists of two parts. The first part, which is the subject of this document, is a detailed description of the technical, cost, resource and environmental characterist… more
Date: February 1, 1985
Creator: Eisenhauer, J. L.; Rogers, E. A.; King, J. C.; Stegen, G. E. & Dowis, W. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Training of nuclear facility personnel: proceedings of the sixth symposium

Description: Separate abstracts are included for each of the papers presented concerning excellence in operator training; achieving excellence through the accreditation process; managing and organizing the training function; operations training methods and processes; the role of simulators in achieving excellence; maintenance and technical training methods and processes; staffing and qualifying the training organization; and measuring training effectiveness.
Date: April 1, 1985
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Preliminary assessment of the Velocity Pump Reaction Turbine as a geothermal total-flow expander

Description: A preliminary evaluation was made of the Velocity Pump Reaction Turbine (VPRT) as a total flow expander in a geothermal-electric conversion cycle. Values of geofluid effectiveness of VPRT systems were estimated for conditions consisting of: a 360/sup 0/F geothermal resource, 60/sup 0/F wet-bulb ambient temperature, zero and 0.003 mass concentrations of dissolved noncondensible gas in the geofluid, 100 and 120/sup 0/F condensing temperature, and engine efficiencies ranging from 0.4 to 1.0. Achie… more
Date: January 1, 1985
Creator: Demuth, O.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Assessment of value-impact associated with the elimination of postulated pipe ruptures from the design basis for nuclear power plants

Description: The US Nuclear Regulatory Commission is proposing to amend the regulations that currently require that the design basis for nuclear power plants include the postulation of dynamic effects from loss of coolant accidents up to and including the double-ended rupture of the largest pipe in the reactor coolant system. Proposed modifications would allow analyses to serve as a sufficient basis for excluding dynamic effects, including but not necessarily limited to pipe whip and jet impingement, associ… more
Date: March 29, 1985
Creator: Holman, G.S. & Chou, C.K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Dynamic characteristics of heat exchanger tubes vibrating in a tube support plate inactive mode

Description: Tubes in shell-and-tube heat exchangers, including nuclear plant steam generators, derive their support from longitudinally positioned tube support plates (TSPs). Typically there is a clearance between the tube and TSP hole. Depending on design and fabrication tolerances, the tube may or may not contact all of the TSPs. Noncontact results in an inactive TSP which can lead to detrimental flow induced tube vibrations under certain conditions dependent on the resulting tube-TSP interaction dynamic… more
Date: January 1, 1985
Creator: Jendrzejczyk, J.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Assay of long-lived radionuclides in low-level wastes from power reactors

Description: The 10 CFR Part 61 waste classification system includes several nuclides which are difficult to assay without expensive radiochemical methods. In order for waste generators to classify wastes practically, NRC Staff has recommended the use of correlation factors to scale the difficult-to-measure nuclides with nuclides which can be measured more easily (i.e., gamma emitters such as /sup 60/Co or /sup 137/Cs). In this study, Science Applications International Corporation (SAIC) performed complete … more
Date: April 1, 1985
Creator: Cline, J.E.; Noyce, J.R.; Coe, L.J. & Wright, K.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

BWR plant analyzer development at BNL

Description: Advanced technology for high-speed interactive nuclear power plant simulations is of great value for timely resolution of safety issues, for plant monitoring, and for computer-aided emergency responses to an accident. Presented is the methodology employed at BNL to develop a BWR plant analyzer capable of simulating severe plant transients at much faster than real-time process speeds. Five modeling principles are established and a criterion is given for selecting numerical procedures and efficie… more
Date: January 1, 1985
Creator: Cheng, H.S.; Wulff, W.; Mallen, A.N.; Lekach, S.V.; Stritar, A. & Cerbone, R.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Use of data and judgment in determining seismic hazard and fragilities

Description: Data and judgment have been combined to provide a description of the seismic hazard at nuclear power plant sites and to develop fragility descriptions of equipment. In both cases, available data was insufficient to adequately describe the situation and had to be supplemented by expert opinion. This paper describes how this was done. Both methods involved the use of questionaires and peer review panels but in different ways. The results have been used both in NRC's Systematic Evaluation Program … more
Date: January 1, 1985
Creator: Cummings, G.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
Back to Top of Screen