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Uncertainty in the power distribution for a fast reactor burnup cycle

Description: Demonstration that advanced reactor designs satisfy safety and performance goals requires the analysis of uncertainties in calculated reactor characteristics. Two of the important performance characteristics of advanced liquid metal reactors (LMR) are the burnup reactivity swing and the local power peaking factor. Previous work reported a study of the uncertainty in the burnup reactivity swing attributable to nuclear data uncertainties for a typical advanced LMR design. The results are reported… more
Date: January 1, 1989
Creator: Downar, D.J.; Khalil, H. (Purdue Univ., Lafayette, IN (USA) & Argonne National Lab., IL (USA))
Partner: UNT Libraries Government Documents Department
open access

Potential minimum cost of electricity of superconducting coil tokamak power reactors

Description: The potential minimum cost of electricity (COE) for superconducting tokamak power reactors is estimated by increasing the physics (confinement, beta limit, bootstrap current fraction) and technology (neutral beam energy, toroidal field (TF) coil allowable stresses, divertor heat flux, superconducting coil critical field, critical temperature, and quench temperature rise) constraints far beyond those assumed for ITER until the point of diminishing returns is reached. A version of the TETRA syste… more
Date: January 1, 1989
Creator: Reid, R.L. & Peng, Y-K. M.
Partner: UNT Libraries Government Documents Department
open access

Dynamics analyses of space power systems using the salt code

Description: The dynamic behavior of large space power systems has been identified as a significant technical issue. To date several analyses of reactor kinetics have been reported in the literature, but there have been few (if any) studies of the dynamic response of the entire space power system. The problem is complex and required analytical methods are not generally available. Furthermore, given the conceptual state of current MMW space power systems designs, dynamic models of components are not generall… more
Date: January 1, 1989
Creator: Geyer, H.K.; Bhattacharyya, S.K.; Hanan, N.A.; Livingston, J.M. (Argonne National Lab., IL (USA) & Westinghouse Electric Corp., Pittsburgh, PA (USA))
Partner: UNT Libraries Government Documents Department
open access

Tritium and neutron measurements of a solid state cell

Description: A solid state cold fusion'' cell was constructed to test for non-equilibrium fusion in a solid. The stimulus for the design was the hypothesis that the electrochemical surface layer in the Pons- Fleischmann cell could be replaced with a metal-insulator- semiconductor (MIS) barrier. Cells were constructed of alternating layers of palladium and silicon powders pressed into a ceramic form and exposed to deuterium gas at 110 psia resulting in a D/Pd ratio of 0.7. Pulses of current were passed throu… more
Date: January 1, 1989
Creator: Claytor, T. N.; Seeger, P. A.; Rohwer, R. K.; Tuggle, D. G. & Doty, W. R.
Partner: UNT Libraries Government Documents Department
open access

Some considerations on resource evaluation of The Geysers

Description: Although large amounts of data have been collected at The Geysers, some reservoir parameters, such as initial liquid saturation, matrix permeability and the fracture network characteristics, are still poorly known. These parameters greatly affect results of resource evaluation and predictions of reservoir behavior. Several two-dimensional fractured porous medium models have been developed for The Geysers; these models differ in assumptions regarding the initial liquid saturation and matrix perm… more
Date: August 1, 1989
Creator: Bodvarsson, G.S.; Gaulke, S. & Ripperda, M.
Partner: UNT Libraries Government Documents Department
open access

The Geopressured-Geothermal Program: Energy conversion status and future possibilities

Description: The Geopressured-Geothermal Program, sponsored by the Department of Energy (DOE) began in 1976 with the Wells of Opportunity. This early research concentrated on resource characterization at several locations in Texas and Louisiana. More recently, the program has included well operations and supporting university research in geoscience and engineering. Long term flow testing, reinjection of brine, and scale prevention were accomplished at the Gladys McCall Well. The Pleasant Bayou Well provided… more
Date: January 1, 1989
Creator: Negus-de Wys, J.; Lawford, T.W. & Faulder, D.D. (EG and G Idaho, Inc., Idaho Falls, ID (USA))
Partner: UNT Libraries Government Documents Department
open access

Conversion feasibility studies for the Grenoble high flux reactor

Description: Feasibility studies for conversion of the High Flux Reactor (RHF) at Grenoble France have been performed at the Argonne National Laboratory in cooperation with the Institut Laue-Langevin (ILL). The uranium densities required for conversion of the RHF to reduced enrichment fuels were computed to be 7.9 g/cm{sup 3} with 20% enrichment, 4.8 g/cm{sup 3} with 29% enrichment, and 2.8 g/cm{sup 3} with 45% enrichment. Thermal flux reductions at the peak in the heavy water reflector were computed to be … more
Date: January 1, 1989
Creator: Mo, S. C. & Matos, J. E.
Partner: UNT Libraries Government Documents Department
open access

Proceedings of the Predator-Prey Modeling Workshop : Workshop Proceedings May 16-19, 1989, University of Washington Friday Harbor Laboratory in Friday Harbor, Washington.

Description: This report summarizes the results of a workshop held to receive expert advice and review existing Columbia River models that include juvenile salmonid predation components and, if warranted, recommend alternate modeling approaches. The workshop was limited to models or modeling approaches that may have practical application to the specific problems of increasing survival of juvenile salmonids in the Columbia and Snake rivers by reducing predation losses. The US Fish and Wildlife Service (FWS) … more
Date: September 1, 1989
Creator: Fickeisen, Duane H.; Dauble, Dennis D. & Neitzel, D. A.
Partner: UNT Libraries Government Documents Department
open access

An evaluation of LMR design options for reduction of sodium void worth

Description: In this study, we analyze the relationship between the sodium void worth ({rho}{sub NA}) and other important performance characteristics for various design options which reduce {rho}{sub NA}. Our objective was to identify a preferred design option for reducing {rho}{sub NA} based on an overall consideration of performance tradeoffs. The focus of this study is on core designs of recent interest in the US LMR program, i.e. designs in the 450 to 1200 MWt size range that make use of metal alloy fue… more
Date: January 1, 1989
Creator: Hill, R N & Khalil, H
Partner: UNT Libraries Government Documents Department
open access

Summary - Hot Dry Rock R&D Strategies and Applications

Description: In geothermal energy technology, the hydrothermal systems rely on volcanic hot rocks being fortuitously co-located with an adequate supply of natural ground water, usually at some considerable depth within the earth. This represents essentially two accidents in the same place, and the occurrence is relatively rare. Yellowstone Park and the desert valley of southern California are the most noteworthy US. examples. Since the heat is the energy needed, if we could just get the water down to it and… more
Date: March 21, 1989
Creator: Tennyson, George P.
Partner: UNT Libraries Government Documents Department
open access

A New Method for Power Generation and Distribution in Outer Space

Description: The power system is a major component of a space system's size, mass, technical complexity, and hence, cost. To date, space systems include the energy source as an integral part of the mission satellite. Potentially significant benefit could be realized by separating the energy source from the end-use system and transmitting the power via an energy beam (power beaming) (Coomes et al., 1989). This concept parallels the terrestrial central generating station and transmission grid. In this summary… more
Date: September 1, 1989
Creator: Bamberger, J. A.
Partner: UNT Libraries Government Documents Department
open access

A new approach to controlling the water level of U-tube steam generators

Description: Automatic water level control in steam generators is currently achieved via a three-element controller. This algorithm is based on the measurements of level, steam flow, and feedwater flow. Unfortunately, at low power the feedwater flow signal is highly unreliable, forcing the transfer to manual control. A large number of reactor trips occur under these conditions, and the nuclear industry has shown a concern for this problem. This paper proposes and validates an alternative automatic control a… more
Date: January 1, 1989
Creator: March-Leuba, C.; March-Leuba, J. & Wilson, T. L.
Partner: UNT Libraries Government Documents Department
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