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Safety evaluation of a conceptual fuel recycle complex

Description: A conceptual design integration study for an integrated Fuel Recycle Complex (FRC) has been completed. A safety evaluation of the radiation shielding, fire precautions, handling of nonradioactive hazardous materials, criticality hazards, operating errors, and the influence of natural phenomena on the FRC shows that all federal regulations are met or exceeded.
Date: January 1, 1980
Creator: Hodges, M E
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Partner: UNT Libraries Government Documents Department
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Seismic isolation of an electron microscope

Description: A unique two-stage dynamic-isolation problem is presented by the conflicting design requirements for the foundations of an electron microscope in a seismic region. Under normal operational conditions the microscope must be isolated from ambient ground noise; this creates a system extremely vulnerable to seismic ground motions. Under earthquake loading the internal equipment forces must be limited to prevent damage or collapse. An analysis of the proposed design solution is presented. This study… more
Date: January 1, 1980
Creator: Godden, W.G.; Aslam, M. & Scalise, D.T.
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Partner: UNT Libraries Government Documents Department
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Effects of relay chatter in seismic probabilistic safety analysis

Description: In the Zion and Indian Point Probabilistic Safety Studies, relay chatter was dismissed as a credible event and hence was not formally included in the analyses. Although little discussion is given in the Zion and Indian Point PSA documentation concerning the basis for this decision, it has been expressed informally that it was assumed that the operators will be able to reset all relays in a timely manner. Currently, it is the opinion of many professionals that this may be an oversimplification. … more
Date: January 1, 1985
Creator: Reed, J. W. & Shiu, K. K.
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Partner: UNT Libraries Government Documents Department
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Mechanical tests for validation of seismic isolation elastomer constitutive models

Description: High damping laminated elastomeric bearings are becoming the preferred device for seismic isolation of large buildings and structures, such as nuclear power plants. The key component of these bearings is a filled natural rubber elastomer. This material exhibits nonlinear behavior within the normal design range. The material damping cannot be classified as either viscous or hysteritic, but it seems to fall somewhere in between. This paper describes a series of tests that can be used to character… more
Date: January 1, 1992
Creator: Kulak, R.F. & Hughes, T.H.
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Partner: UNT Libraries Government Documents Department
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Hot dry rock fracture propagation and reservoir characterization

Description: North America's largest hydraulic fracturing opeations have been conducted at Fenton hill, New mexico to creae hot dry rock geothermal reservoirs. Microearthquakes induced by these fracturing operations were measured with geophones. The large volume of rock over which the microearthquakes were distributed indicates a mechanism of hydraulic stimulation which is at odds with conventional fracturing theory, which predicts failure along a plane which is perpendicular to the least compressive earth … more
Date: January 1, 1988
Creator: Murphy, H.; Fehler, M.; Robinson, B.; Tester, J.; Potter, R. & Birdsell, S.
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Partner: UNT Libraries Government Documents Department
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Seismic performance of underground facilities

Description: A workshop was held in Augusta, GA, February 11-13, 1981 to review and assess the state-of-the-art for determining and predicting earthquake damage to underground facilities. The papers presented related to data collection and analysis, modeling, and repository design. Discussion groups addressed seismology, rock mechanics and hydrology, modeling, design, and licensing, siting, and tectonics. Most scientists in attendance believed that enough was known to proceed with site selection, design, an… more
Date: January 1, 1982
Creator: Marine, I W
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Review of seismic probabilistic risk assessment and the use of sensitivity analysis

Description: This paper presents results of sensitivity reviews performed to address a range of questions which arise in the context of seismic probabilistic risk assessment (PRA). These questions are the subject of this paper. A seismic PRA involves evalution of seismic hazard, component fragilities, and system responses. They are combined in an integrated analysis to obtain various risk measures, such as frequency of plant damage states. Calculation of these measures depends on combination of non-linear f… more
Date: January 1, 1985
Creator: Shiu, K. K.; Reed, J. W. & McCann, M. W., Jr.
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Partner: UNT Libraries Government Documents Department
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Rock failure during massive hydraulic stimulation of the Baca location geothermal reservoir

Description: The analyses of microearthquake signals occurring during hydraulic stimulation provide an estimate of the size and location of the fractures thus produced. Studies of microearthquakes occurring during two large (> 10/sup 3/m/sup 3/) hydraulic stimulations of the hydrothermal reservoir at the Baca Location in the Jemez Mountains of northeastern New Mexico are reported. Both stimulations consisted of water, viscosity enhancer, and proppant. The microearthquake event rate was low but variable thro… more
Date: January 1, 1982
Creator: Pearson, C.; Keppler, H.; Albright, J. & Potter, R.
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Partner: UNT Libraries Government Documents Department
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Studies of the subsurface effects of earthquakes

Description: As part of the National Terminal Waste Storage Program, the Savannah River Laboratory is conducting a series of studies on the subsurface effects of earthquakes. This report summarizes three subcontracted studies. (1) Earthquake damage to underground facilities: the purpose of this study was to document damage and nondamage caused by earthquakes to tunnels and shallow underground openings; to mines and other deep openings; and to wells, shafts, and other vertical facilities. (2) Earthquake rela… more
Date: January 1, 1980
Creator: Marine, I W
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Review of seismic probabilistic risk assessment and the use of sensitivity analysis

Description: This paper presents results of sensitivity reviews performed to address a range of questions which arise in the context of seismic probabilistic risk assessment (PRA). These questions are the subject of this paper. A seismic PRA involves evaluation of seismic hazard, component fragilities, and system responses. They are combined in an integrated analysis to obtain various risk measures, such as frequency of plant damage states. Calculation of these measures depends on combination of non-linear … more
Date: January 1, 1985
Creator: Shiu, K. K.; Reed, J. W. & McCann, M. W., Jr.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Probability problems in seismic risk analysis and load combinations for nuclear power plants

Description: This paper describes seismic risk, load combination, and probabilistic risk problems in power plant reliability, and it suggests applications of extreme value theory. Seismic risk analysis computes the probability of power plant failure in an earthquake and the resulting risk. Components fail if their peak responses to an earthquake exceed their strengths. Dependent stochastic processes represent responses, and peak responses are maxima. A Boolean function of component failures and survivals re… more
Date: January 1, 1983
Creator: George, L.L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Liquid storage tanks under vertical excitation

Description: Until recently, the hydrodynamic effects on liquid storage tanks induced by an earthquake excitation were basically treated for the horizontal component of the earthquake. Recent studies, however, showed that the hydrodynamic effects due to the vertical component of an earthquake may be significant. In these studies the tank is assumed to be fixed at the bottom. This paper is concerned with the hydrodynamic behavior of liquid storage tanks induced by vertical earthquake input excitation. First,… more
Date: January 1, 1985
Creator: Philippacopoulos, A.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Risk evaluations of transuranic waste at the Idaho National Engineering Laboratory

Description: Approximately 75% of the defense low-level transuranic (TRU) waste stored in the United States and 25% of the buried TRU waste is located at the Idaho National Engineering Laboratory (INEL). Studies have been performed to identify and evaluate technical alternatives for the long-term management of this waste. (The alternatives range from leaving the waste in place as is to reviewing, processing, and shipping it to an offsite geological repository.) Among the evalations that have been performed … more
Date: January 1, 1980
Creator: Smith, T.H. & Keneshea, F.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Probability based load combinations for design of category I structures

Description: This paper discusses a reliability analysis method and a procedure for developing the load combination design criteria for category I structures. For safety evaluation of category I concrete structures under various static and dynamic loads, a probability-based reliability analysis method has been developed. This reliability analysis method is also used as a tool for determining the load factors for design of category I structures. In this paper, the load combinations for design of concrete con… more
Date: January 1, 1985
Creator: Reich, M. & Hwang, H.
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Partner: UNT Libraries Government Documents Department
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Reliability evaluation of prestressed concrete containment structures

Description: The probabilistic safety evaluation of a realistic unbonded prestressed concrete containment building subjected to combinations of static and dynamic loads is presented. Loads considered include dead load, prestressing, accidental internal pressure, tornado and earthquake loads. Pertinent load parameters are the occurrence rate, duration and intensity. These parameters are treated as random variables for most of the loads. Limit state probabilities conditional on a specific load combination are… more
Date: January 1, 1985
Creator: Pires, J.; Hwang, H. & Reich, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Evaluation of a hanging core support concept for LMR application

Description: The paper describes an innovative design concept for a liquid metal reactor (LMR) core support structure (CSS). A hanging core support structure is described and analyzed. The design offers inherent safety features, constructability advantages, and potential cost reductions. Some safety considerations are examined which include the in-service inspection (ISI), the backup support system and the structural behavior in a hypothetical case of a broken beam in the core support structure.
Date: January 1, 1985
Creator: Burelbach, J. P.; Cha, B. K.; Huebotter, P. R.; Kann, W. J.; Pan, Y. C.; Saiveau, J. G. et al.
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Partner: UNT Libraries Government Documents Department
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Characterizing hydraulically fractured reservoirs using induced microearthquakes

Description: Hydraulic fracturing is a common method employed to increase the production of oil and gas fields. Recently, there has been increased interest in monitoring the microearthquakes induced by hydraulic fracturing as a means of obtaining data to characterize reservoir changeS induced by the injection. Two types of microearthquakes have been observed during hydraulic fracturing. Tensile events have been observed and modeled as the parting of the surfaces of a fracture. A majority of the events obser… more
Date: January 1, 1991
Creator: Fehler, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Analytical simulation of nonlinear response to seismic test excitations of HDR-VKL piping system

Description: Dynamic tests with simulated earthquake excitation (SHAM) were performed during April--May 1988 on the Versuchskreislauf (VKL) piping system at the Heissdampfreaktor (HDR) Test Facility in Kahl/Main, Federal Republic of Germany. The major objectives of these tests were to study the behavior of a full-scale in-plant piping system subjected to a range of seismic excitation levels (from design levels to those that might induce either failure of pipe supports or plasticity in the pipe runs) and to … more
Date: January 1, 1991
Creator: Srinivasan, M.G.; Kot, C.A. (Argonne National Lab., IL (United States)) & Mojtahed, M. (Purdue Univ., Hammond, IN (United States))
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Partner: UNT Libraries Government Documents Department
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Seismically-induced soil amplification at the DOE Paducah Gaseous Diffusion Plant site

Description: A site-specific earthquake site response (soil amplification) study is being conducted for the Department of Energy (DOE), Paducah Gaseous Diffusion Plant (PGDP). This study is pursuant to an upgraded Final Safety Analysis Report in accordance with requirements specified by DOE. The seismic hazard at PGDP is dominated by the New Madrid Seismic Zone. Site-specific synthetic earthquake records developed by others were applied independently to four soil columns with heights above baserock of about… more
Date: January 1, 1991
Creator: Sykora, D.W.; Haynes, M.E. (Army Engineer Waterways Experiment Station, Vicksburg, MS (United States). Geotechnical Lab.); Brock, W.R.; Hunt, R.J. & Shaffer, K.E. (Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States))
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Partner: UNT Libraries Government Documents Department
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Location of hydraulic fractures using microseismic techniques

Description: Microearthquakes with magnitudes ranging between -6 and -2 have been observed in three successive massive injections of water at the Hot Dry Rock Geothermal Energy demonstration site at Fenton Hill, New Mexico. The injection was part of a program to increase the heat transfer area of hydraulic fractures and to decrease the flow-through impedance between wells. The microearthquakes were used in mapping the location of the extended hydraulic fractures. A downhole triaxial system positioned approx… more
Date: January 1, 1980
Creator: Albright, J.A. & Pearson, C.F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Comparison of seismic response of ordinary and base-isolated structures

Description: Seismic isolation is growing rapidly worldwide as a cost-effective and reliable design strategy for a wide range of critical and important facilities (e.g., hospitals, computer centers, etc.) Shimizu Corporation of Japan has a test facility at Tohoku University in Sendai, Japan. The test facility was constructed in 1986 and has two buildings: one is base isolated and the other is conventionally founded. The buildings are full-size, three-story reinforced concrete structures. The dimensions and … more
Date: January 1, 1992
Creator: Kuroda, T.; Kobatake, M. (Shimizu Corp., Tokyo (Japan)); Seidensticker, R.W. & Chang, Y.W. (Argonne National Lab., IL (United States))
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Partner: UNT Libraries Government Documents Department
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Guidelines for Earthquake Ground Motion Definition for the Eastern United States

Description: Guidelines for the determination of earthquake ground-motion definition for the eastern United States are established in this paper. Both far-field and near-field guidelines are given. The guidelines were based on an extensive review of the current procedures for specifying ground motion in the United States. Both empirical and theoretical procedures were used in establishing the guidelines because of the low seismicity in the eastern United States. Only a few large to great (M > 7.5) sized ear… more
Date: January 1, 1985
Creator: Gwaltney, R. C.; Aramayo, G. A. & Williams, R. T.
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Partner: UNT Libraries Government Documents Department
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Environmental baseline monitoring in the area of general crude oil-Department of Energy Pleasant Bayou Number 2: a geopressured geothermal test well, 1980. Annual report

Description: A description of baseline air and water quality of the test well site, a summary of microseismic activity before and during 1980, and a description of the monitoring of a liquid tiltmeter at the test well site are included.
Date: January 1, 1982
Creator: Gustavson, T. C.; Howard, R. C. & McGookey, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of Site-Specific Synthetic Accelerations for Safety Assessment of DOE Facilities at Oak Ridge, Tennessee

Description: Seismic analysis of US Department of Energy (DOE) facilities at Oak Ridge, TN, requires seismic accelerograms that have response spectra that are compatible with the site-specific design response spectra. The development of these accelerograms is accomplished by the application of the Fourier transform to compute the response spectrum of a beginning accelerogram and map it into the frequency domain. The Fourier spectrum is modified according to the difference between the computed spectra and th… more
Date: January 1, 1991
Creator: Aramayo, G. A.; Carley, T. G. & Jones, W. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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